158 results about "Bank" patented technology

The invention discloses an interpretation and evaluation method for a reservoir area engineering geological survey and particularly relates to a hierarchy interpretation method and a comprehensive evaluation method for reservoir area engineering geological survey and evaluation. According to the interpretation and evaluation method, the interpretation of bad geologic bodies of landslide, collapse, debris flow and the like can be achieved, the precision can meet a requirement of feasibility, and the comprehensive evaluation of engineering geological problems of reservoir leakage, reservoir bank stability, reservoir bank collapse, reservoir immersion, the debris flow and the like can be achieved. The steps of the interpretation and evaluation method includes firstly, establishing a geographic information system (GIS) data bank of a reservoir area engineering geology and a three-dimensional true color remote-sensing image visualization system; secondly, establishing remote-sensing interpretation marks of the bad geologic bodies of the landslide, the collapse, the debris flow and the like; thirdly, performing preliminary interpretation with geography interpretation as a priority; fourthly, performing outdoor verification by matching of image interpretation; fifthly, performing detailed comprehensive interpretation with three-dimensional interpretation as a priority; sixthly performing reservoir leakage comprehensive interpretation based on a GIS; seventhly, performing reservoir bank stability comprehensive interpretation based on the GIS; eighthly, performing reservoir bank collapse and reservoir immersion comprehensive interpretation based on the GIS; and ninthly, performing reservoir debris flow comprehensive interpretation based on the GIS.

The invention provides a construction method for integral installation of a river-crossing sinking pipe. The construction method includes the following steps that steel plate piles are driven into river bank pipe ditch positions of river banks on the two side to form a cofferdam; a back shovel is used for digging out river bank pipe ditches in the cofferdam; a dredger with a long arm back shovel is used for digging out a river channel pipe ditch; two cranes are used for lifting a sinking pipe pipeline, an excavator is used in cooperation for moving the sinking pipe pipeline into the river bank pipe ditches, and pipe pressing and backfilling are conducted after the sinking pipe pipeline is sunk and positioned; and integral installation of the river-crossing sinking pipe is achieved through the above steps. Due to the scheme that the cofferdam is arranged on the edges of the river banks through the steel plate piles, the back shovel is used for digging, and the scheme that the dredger with the long arm back shovel is used for digging the river channel pipe ditch located in the middle of a river channel is used in cooperation, compared with the prior art, the sinking pipe pipeline can be integrally constructed at a time, cofferdam connecting pipes do not need to be additionally arranged on the two banks of a river after the sinking pipe pipeline is installed, and the construction difficulty is lowered.

The invention discloses a method for improvement and protection of a spur dike channel of a mountain river. The method comprises the steps that (1) the channel improvement water level and the channel improvement line width are determined according to the direction of the channel, the planned line form, the hydrological characteristics of the river, the riverbed components and the erosion and deposition evolution characteristic, and (2) the position and the length of a spur dike are determined according to the shipping hindering characteristic of a dangerous shoal and the improvement line width. The method for improvement and protection of the spur dike channel of the mountain river is characterized by further comprising the steps that (3) a dike body structure is laid, wherein a layer of block shaped like the twisted Chinese character 'Wang' is laid on the downstream slope of a dike body; (4) the bottom of the head of the dike is protected; (5) the bottom of the root of the dike is protected; (6) a bank protection structure is arranged. The method is particularly suitable for improvement and protection of the spur dike channel of the mountain river, the strength of the root of the dike and the strength of the head of the dike can be improved, stronger current impact force can be resisted, the overall service life is prolonged, and the method has the advantages of being capable of preventing sediment accumulation, stabilizing a riverbed, protecting the ecological environment and achieving safe flood discharging.

The invention relates to an underwater slope backing method of bulky sand filled geotechnical pillow bags. The method comprises the following operation steps of: 1, measurement of an underwater bank slope; 2, soil characteristic investigation of the underwater bank slope; 3, technical parameter determination and preparation of the geotechnical pillow bags; and 4, sand filling and sinking of the bulky sand filled geotechnical pillow bags. By the method, slope cutting is avoided, the bank shoal of certain width is reserved, and stability and safety of a river dike can be effectively improved; land acquisition is reduced, and the project investment can be greatly reduced; and the bulky sand filled geotechnical pillow bags have good extension and deformation capacities in the longitudinal and transverse directions, are combined tightly with the underwater irregular bank slope after being laid in place, have large volume, heavy dead weight, good stability and good slope backing treatment effect, and create conditions for wide application of a new composite geotextile software row bank protection technology in river bank collapse treatment projects.

The invention discloses an ecological revetment and ecological embankment combined system and a construction method. The combined system adopts ecological building blocks with vegetation holes for carrying out slope protection on riverways, lakes and other near-shore slopes, ecological bags are stacked at the junction of land and water, channels for exchange of near-shore slope soil and water environment substances and a water body natural purification function are guaranteed, aquatic plants can be planted in the ranges of the ecological building blocks and the ecological bags, meanwhile, theecological building blocks and the ecological bags are suitable for survival of aquatic animals, the biological diversity is guaranteed, the water quality is improved, a good ecological and landscapeeffect is achieved, due to the arrangement of a hydrophilic footpath, the requirements of people for being close to a water bank and returning to nature can be met, meanwhile, a bottom beam, a top beam, geotechnical cloth, a banket retaining wall, a footpath retaining wall and other structures are arranged, therefore, an ecological revetment and an ecological embankment form an integral structure,the stability of the near-shore slope and the flood prevention and drainage functions can be effectively guaranteed, and water and soil loss is avoided.

The invention relates to a composite ecological bank protecting structure and a construction method thereof. The composite ecological bank protecting structure comprises a low-water-level area bank protecting unit, a normal-water-level area bank protecting unit, a flood-stage area bank protecting unit and a landscape accessory structure arranged on the flood-stage area bank protecting unit in a section mode and used for viewing, the low-water-level area bank protecting unit comprises a rubble slope base and a hollow concrete block, and the normal-water-level area bank protecting unit comprisesa Reynolds protecting cushion layer, an ecological buffering tank, a clean water wetland and a water collecting dark canal; and the bottom of the water collecting dark canal communicates with the bottom of the ecological buffering tank through a communicating pipe, and the flood-stage area bank protecting unit comprises ecological grassland, a drainage ditch and a seepage dam. According to the different characteristics of a river bank in each area, the flood control, ecology and landscape function of the river bank are organically combined, the problems of poor ecological and landscape effectof a traditional bank are solved, and the ecosystem and bank protecting stability of a river bank belt are improved.

The comprehensive control and treatment method of underground water resource intruded by sea water includes the following steps: surveying the topography and its surface features of control area in overall; finding out the main stream position and direction of alluvial fan of the quaternary system, further finding out the monadnock within nearest distance of left and right banks of main stream position of quaternary system alluvial fan; using connecting line between two monadnocks as central line of grout curtain wall, curtain grouting is started from bedrock and grouting to sea level elevation; setting diversion dam on entrance of river in the control area; setting several sunk well with large gushing water on the main stream position of quaternary system allavial fan at up-stream side of curtain wall.

The invention pertains to the technical field of characteristic tests of hydraulics and rock and soil mechanics and particularly relates to an omnibearing observation apparatus of bank scouring and slumping conditions, which consists of a slide-type groove tank, a straight sink, a panel box and a push device. A bank model is made in the slide-type groove tank and then pushed to an experiment position preset in the straight sink. Then water current is served for scouring the bank and when in scouring, the slide-type groove tank is continuously pushed forwards and the omnibearing observation is carried out to the conditions of bank scouring and slumping till the bank is slumped. The omnibearing observation can be carried out to the process of bank scouring and slumping and then sediment concentration at the side of a riverway bank can be obtained by monitoring the change of the shape sizes of sections; the route of bank slumping can be directly observed and video recording can be carried out to record the extending process of the land sliding line of bank slumping.

The invention relates to a bank slope instability monitoring and calculating method based on MQ RBFCM. Establishing an ideal homogeneous reservoir bank slope calculation model. The method comprises the steps of adopting an MQ RBFCM discrete saturation-unsaturated seepage control equation and first and second types of boundary conditions; establishing an algebraic equation set simultaneous equationset of the saturated-unsaturated seepage problem, calculating a seepage line in the slope when the reservoir water level change and the rainfall effect do not occur, and then performing steady-stateanalysis to obtain a steady-state seepage field in the slope when the reservoir water level change and the rainfall effect do not occur; taking the steady-state seepage field as an initial state of transient analysis, adding reservoir water level change and rainfall action into boundary conditions, and carrying out transient analysis; and importing the seepage field into an STAB program, arrangingthe safety coefficients at all moments, and carrying out superposition analysis on bank slope pore water pressure distribution and a slope stability calculation result. The method can be used for preventing unburned riverbank stabilization hidden dangers at proper time, has a remarkable effect of maintaining riverbank stabilization, and has a guiding effect on flood control and emergency rescue work of riverways.

The invention relates to an ecological geotube submerged breakwater which comprises ecological geotubes, filled woven bags and protection blankets. The protection blankets are laid on a riverbed parallel with a dike dam of a river bank, the ecological geotubes and the filled woven bags are filled with sand and soil, each protection blanket is provided with three ecological geotubes shaped like a Chinese character 'pin', the ecological geotubes axially adjacent in an end-to-end mode are stacked in an end-to-end staggered connection mode, and the filled woven bags are stacked in seams among the three ecological geotubes of each protection blanket. The ecological geotube submerged breakwater can resist repeated impact of water currents, wind and waves for a long time, the ecological ecotubes are filled with sand and soil and are stacked, the submerged breakwater which is high in strength, quality and density and not prone to collapsing can be formed, relatively stable ecological environment of plants in a water body of the river bank can be maintained, influences of the wind and waves on the plants in the water body of the river bank are reduced, and underwater conditions are stabilized. Meanwhile, due to the stacking method, needed materials are simple, the stacking efficiency is high, and the stacked submerged breakwater can resist erosion of wind, waves and water currents and is not prone to deforming and collapsing and high in operability.

A geotextile tube and a method for filling a filler into a geotextile tube are disclosed, which are generally used for a bank of a river or sea and an underwater bank or a soft and weak soil support. In the geotextile tube, a filler work time and cost can be decreased and a construction capability is enhanced by fast filling a filler into a container in such a manner that water and air inputted into the interior of a container along with a filler are smoothly discharged to the outside, and a filling state of a filler is good in the container, so that a good quality soft and weak soil support layer or bank structure is obtained, and the diameter and length of the geotextile tube are not limited, and it is possible to manufacture a durable and stable geotextile tube.

The invention provides a riparian zone ecological restoration system and a construction method thereof. The riparian zone ecological restoration system comprises a riverway slope protection structureand a riverway structure which are adjacently connected. The river slope protection structure comprises an original soil tamping layer, a first coarse sand cushion layer, an anti-seepage blanket layer, a second coarse sand cushion layer, a geotechnical cloth layer, an ecological gabion layer, a planting soil layer and an anti-scouring blanket layer which are sequentially arranged from bottom to top in the height direction of the slope surface of a side slope; a planting groove is formed in the junction of the slope surface of a river slope and a river, and submerged plants are planted in the planting groove; and the first coarse sand cushion layer, the anti-seepage blanket layer, the second coarse sand cushion layer, the geotechnical cloth layer, the ecological gabion layer and the anti-scouring blanket layer extend into a river channel from the slope surface of the side slope through the planting groove. According to the system, through the combination of ecological gabions, anti-seepage blankets and anti-scouring blankets, the stability of a river bank is guaranteed on the premise of meeting the requirements of flood discharge and flood drainage, and water and soil loss can be favorably prevented; and the submerged plants are planted in the planting groove, so that the restoration of the ecological environment of a water body is facilitated.

The invention discloses a river bank protection structure and a construction method thereof. The river bank protection structure comprises a retaining wall structure and a slope protection structure,wherein the retaining wall structure comprises a cylinder, a horizontal pre-buried rod and a vertical pre-buried rod, at least two trapezoidal blocks are arranged on the outer circumferential side face of the cylinder, pre-buried blocks are arranged on the end faces of the trapezoidal blocks, and the vertical pre-buried rod is arranged between the upper pre-buried block and the lower pre-buried block, the trapezoidal blocks, the pre-buried blocks, the horizontal pre-buried rod and the vertical pre-buried rod are embedded into a soil body of a river bank, and the slope protection structure is connected with the retaining wall structure. The construction method of the river bank protection structure comprises the steps of river bank cleaning, retaining wall structure construction, slope protection structure construction and protection structure maintenance. According to the river bank protection structure and the construction method thereof, through the design of the retaining wall structure and the slope protection structure, the stability and reliability of river bank protection can be greatly improved, water and soil loss is reduced, meanwhile, the service life of the river bank protection structure is prolonged, the construction steps of the river bank protection structure are simple and convenient, the stability and reliability of the retaining wall structure and the slope protection structure are effectively improved, moreover, the river bank stability can be maintained, and water and soil loss can be reduced.

The invention discloses a bank protection structure capable of preventing water and soil loss, and relates to the technical field of water conservancy projects, water and soil loss caused by river water scouring is reduced, the bank protection structure comprises a plurality of bank protection retaining walls arranged in the length direction of a river channel, and each bank protection retaining wall comprises a slope body and a platform which are sequentially arranged in the direction close to the river channel; bosses are vertically arranged at the two ends of the slope body in the river water flow direction. The plurality of plant groups are arranged at equal intervals in the extension direction of the slope body, and each plant group comprises a plurality of plants which are located at the same height of the slope body and are collinearly arranged; the device further comprises a soil protection mechanism used for blocking river water scouring, the soil protection mechanism comprises a plurality of water baffles, the water baffles located at the same height position of the slope body are collinearly arranged, and the water baffles can rotate towards the direction close to the river channel to be in the initial state of abutting against the slope body and can rotate towards the direction away from the river channel to be in the soil protection state used for blocking river water. Scouring of river water to the slope body can be reduced, and therefore water and soil loss of the bank protection structure is prevented.

The invention provides a riverway dredging method and a riverway bank slope ecological protection structure under a poor geological condition. The structure comprises an upstream cofferdam and a downstream cofferdam of a river segment planned to be dredged, support piles on a left bank and a right bank, backfill rock blocks on the left bank and the right bank, backfill grading stone on voiding portions below retaining walls of the left bank and the right bank, an ecological plant planting bed located on the surface layers of the backfill rock blocks on the left bank and the right bank, ecological plants, and an isolation layer backfilled after riverway dredging. The bank slope stability can be ensured, the riverway local water ecology is improved, the river water self-cleaning capacity isimproved, the sewage treating period is prolonged, and the sewage treatment cost is reduced.

The invention discloses a contaminated site investigation migration trend evaluation method. The evaluation method considers the interaction between a surface water body and underground water, considers the bank slope structure of the surface water body and evaluates the migration trend of pollutants through analog computation so as to provide guidance for an investigation stationing scheme of a contaminated site. The evaluation method has the advantages that the establishment of the evaluation method can accurately evaluate the pollutant migration trend of the polluted site with the surface water body inside or nearby, can provide accurate and reliable pollutant spatial distribution information for the investigation of the polluted site, and is convenient for point distribution and implementation.

The invention discloses a construction method and structure of a landscape type anti-wave wall. In the invention, reversible water retaining walls are arranged on the edges of dams along both banks of the river. When the flood comes, the water retaining wall is erected to block the flood; The retaining wall is turned down as the road surface on the embankment; the reversible retaining wall not only meets the flood control requirements, but also meets the landscape requirements on both sides of the river. The device formed according to the aforementioned method comprises a dike 1; the top of the dike is provided with a base 2, and the base is hinged to the bottom of the water retaining wall 3 back water surface near the river surface; the base is provided with a support device 4, and the support device is connected to the top of the water retaining wall back water surface hinged. The present invention adopts the overturning water retaining wall to replace the existing method of permanently raising the embankment, which not only does not affect the landscape of the river course, but also improves the surrounding environment of the embankment. When the flood comes, there is no need to invest a lot of manpower and materials to temporarily raise the embankment. Can be done in a very short time. It is easy to restore and hide after the flood, and it is very convenient to maintain and overhaul.

The invention provides a river non-contact side-scan flow velocity measurement fixed velocity measurement vertical line positioning correction method, which comprises the following steps of: selectinga position with a stable bank slope and a good sighting condition near a river bank hydrological survey section to mount and fix a non-contact side-scan flow velocity measurement instrument, and testing the installation elevation H of the measurement instrument. According to the method, by providing the river non-contact side-scan flow velocity measurement fixed velocity measurement vertical linepositioning correction method, the positioning error of the fixed velocity measurement vertical line caused by the change of the water level is eliminated, the observation precision of river flow canbe improved to the maximum extent, and the requirements of river flood prevention, water resources and ecological environment are met; the method fills the blank of a river non-contact side-scan flowvelocity measurement fixed velocity measurement vertical line positioning correction method, and is suitable for popularization and application.

The invention discloses an experimental device for simulating the stability of a wharf ecological bank slope under a sea wave erosion condition and a method thereof. The experimental device comprises a wharf bank slope simulation system, a wave making system, a water level control system, a seabed simulation system and an overall control system. The wharf bank slope simulation system achieves the purpose of simulating a real pier type wharf ecological bank slope through the combination of artificial vegetation, a protective face block model, an approach bridge model and a pier model, the wave making system makes water waves through translation of a push plate, the water level control system controls the water level in the device through a valve., the seabed simulation system restores the seabed condition of a research area through geological deposition information, the overall control system adjusts the bank slope angle and the wave condition, and all the systems work cooperatively to simulate the erosion condition of the wharf ecological bank slope under the action of sea waves.

The invention provides an ecological retaining wall structure and a construction method thereof, and relates to the field of hydraulic engineering. The ecological retaining wall structure comprises a retaining wall foundation, a retaining wall support body and an ecological block, wherein the retaining wall foundation is arranged in a soil body of a river channel; the retaining wall support body comprises a retaining wall body and a retaining wall bottom block, and the retaining wall bottom block is arranged at the lower end of the retaining wall body and extends to one side of the retaining wall support body; the ecological block comprises backfill soil of a retaining wall part and a plurality of block bodies arranged on the backfill soil of the retaining wall part; a plurality of soil-water connection channels are arranged on the retaining wall support body, and the backfill soil of the retaining wall part extends to backfill soil of a bank wall part through the soil-water connection channels. According to the ecological retaining wall structure and the construction method thereof, the retaining wall foundation is constructed on the bank of the river channel, the upper portion of the retaining wall foundation is provided with the retaining wall support body, and the ecological retaining wall structure is formed by combining the retaining wall foundation and the retaining wall support body; horizontal force and other loads exerted on the ecological retaining wall structure are borne by the retaining wall foundation and the retaining wall support body together, so that the ecological retaining wall structure has the advantages of being safe, stable and reliable, and can meet the requirements for relatively narrow construction space, an ecological and environmental-protection effect, landscaping and the like.

The invention discloses a protective structure for preventing and controlling a riverway concave bank from being eroded. The protective structure comprises an overflow weir formed through double-layerinlaying, a protective arm and dam abutments formed by inlaying large dimension stones. The relatively higher protective arm is arranged on the concave bank side prone to erosion of a riverway, and the relatively low overflow weir is arranged at the center of the riverway, so that river water is centralized in the overflow weir and a protection-free convex bank to flow through a river bend, flowing of the river water close to the concave bank is retarded, the shear stress at the concave bank is reduced, silt at the concave bank is prevented from being eroded by the river water, meanwhile water level rise before the overflow weir is quick, a scour pit is formed behind the weir, pressure gradient is formed on a river bed due to water level difference, and surface water and underground waterexchange is promoted. Compared with a traditional method, the protective structure is low in cost and long in service life, can also prevent the concave bank from being eroded, promotes surface waterand underground water exchange, thus improves the self-cleaning capacity of the riverway, relieves riverway pollution and has a wide application prospect in the fields such as channel improvement ofriverway and mountainous area drainage basins.

The invention discloses an automatic division method for an element mathematical model section of a water and sediment habitat of a one-dimensional river network, which comprises the following steps of determining a central point, a river channel left bank boundary point and a river channel right bank boundary point of a river section along a river width direction from upstream to downstream, anddetermining a river section central line, a left bank line and a right bank line; then sequentially calculating cumulative distances lc, i from each central point Pc, i (xc, i, yc, i) to the first central point Pc, 1 (xc, 1, yc, 1) of the entrance position of the river reach along the central line Lc from upstream to downstream; setting the total number Ns of sections needing to be defined in theriver reach, and calculating the distance between every two adjacent sections; determining vertical feet Ps and m coordinates (xs, m, ys, m) of the mth section Sm and the center line; determining a point skew equation of a straight line where the section Sm is located; calculating plane coordinates of left and right bank end points of the section; and finally, performing interpolation calculationon the elevation zs, m, i, ys, m and i of each section point (xs, m, i) on the Sm section, calculating the distance dxi between each section point and the starting point of the left bank, and obtaining an elevation data pair (dxi, zs, m and i). The invention solves the problem of automatically dividing the section of a one-dimensional river network model.

The invention relates to the field of hydraulic engineering, in particular to a bank protection structure capable of preventing water and soil loss. The bank protection structure comprises a bank protection foundation layer and foundation protection layers arranged on the surface of the bank protection foundation layer; the bank protection foundation layer extends to the river bottom from river banks at the two sides; the foundation protection layers comprise protection net cages arranged along slope surfaces at the two sides of the bank protection foundation layer, cushion layers arranged atthe lower parts of the protection net cages and surface soil layers arranged at the upper parts of the cushion layers; the protection net cages upwards extend to the river banks and downwards extend to the river bottom; and the surface soil layers comprise solidified soil layers close to one side of the river bottom and spongy soil layers close to one sides of the river banks, the solidified soillayers make contact with the spongy soil layers, and both the solidified soil layers and the spongy soil layers permeate into the cushion layers. The bank protection structure has the advantages thatthe water-flow-resistant capacity is high, and the water and soil conservation effect is good.

The invention discloses an automatic monitoring system for culvert safety, relates to the technical field of culvert monitoring, and aims to solve the problems of lack of culvert flow and flow velocity monitoring and culvert structure stress monitoring and low monitoring precision in the prior art. The system comprises a data acquisition subsystem, a data management subsystem, a safety monitoring subsystem, a data analysis subsystem and an early warning and forecasting subsystem, the data acquisition subsystem comprises data detection modules and a data receiving module, the data detection module is installed on each monitoring point position of a culvert through a buoy, and the data receiving module is installed on a river bank. The data detection module transmits the collected detection data to the data receiving module. According to the system, by configuring the hardware, the use condition of the culvert, the surrounding environment and the stress condition of the culvert structure can be obtained, real-time safety monitoring, early warning and forecasting can be achieved through the safety monitoring subsystem, the early warning and forecasting subsystem and the like of the system, automatic monitoring of culvert safety is achieved, and the monitoring precision is high.

The invention belongs to the field of water resources and environments and relates to a revetment construction method for an urban inner lake ecologic landscape. The method comprises the following steps: analysis of a current revetment damage mechanism analysis, wherein bank slope damage mechanism analysis is conducted through investigation of damage of current shorelines and revetments along lines of an urban inner lake and in combination with factors such as actual slopes, water depth before slopes, wind directions and water flows; and selection of an ecologic revetment form and construction, wherein according to around-lake geographic situations, water ecologic environments, river channel bank base environments and landscape demands of the urban inner lake, classification and type features of the ecologic revetment are analyzed, how to select the proper revetment form according to different segments and different areas by virtue of original topographical advantages is researched, and functions and landscape natures of a revetment project are satisfied to the hilt. The method provided by the invention has the beneficial effects that through plants or a technical approach which combines the plants and the project, mutual conservation of water masses, soil masses and creatures is realized; a nature-imitated state suitable for creature growth is created; and the ecologic landscape revetment integrates ecologic, landscape and self-cleaning functions.

The invention provides a test method for verifying existence of hydrodynamic pressure in bank slope soil. The method can be improved on the basis of most simple permeation devices and is efficient, economical and high in operability. The test device is improved, a permeability test is carried out by preparing a plurality of groups of soil samples with different permeability coefficients; meanwhile, the water head and the stress in the soil body in the test are obtained in a targeted manner according to the concept of hydrodynamic pressure to ensure the accuracy of the test; and finally, the existence of the hydrodynamic pressure is verified by analyzing the change rules of the water head and the stress in the soil body obtained from the test soil sample under different permeability coefficients, and a scientific basis is provided for accurately mastering the hydrodynamic pressure concept in the field of reservoir bank slope stability analysis and evaluation.

The invention discloses an ecological floating bed for ecological environment protection and a construction method. The ecological floating bed comprises a plurality of modules which can be adjacentlycombined, and anchor rods mounted at river banks. Each module comprises a bottom plate, a square-opening groove is vertically formed in the middle of the bottom plate in a penetrating mode, a movablydetachable box body is installed above the bottom plate, and a planting groove is formed after the middle of the box body is concaved downwards. The product can be assembled on the bank without launching operation, so that the operation is safer and more convenient.

The invention provides a sludge soft soil foundation earth rock cofferdam structure and a construction method thereof. The construction method comprises the following steps that S1, filling construction is conducted on a berm bottom ripped-rock and silt squeezing composite area (1) and a berm on the top of the berm bottom ripped-rock and silt squeezing composite area from the bank-off advancing starting end of one bank or two banks of a riverbed, the berm bottom ripped-rock and silt squeezing composite area (1) is circularly constructed until the riverbed is intercepted, and the filling height of the berm is higher than that of a soft soil foundation surface area (12). The stability problem of a cofferdam on a sludge soft soil foundation in underwater construction can be solved, meanwhile, it is guaranteed that the cofferdam is reasonable in structure and controllable in deformation, and an anti-seepage system is safe and reliable.

The invention discloses an anti-scouring river bank hydro-fluctuation belt ecological management method. The method includes the following steps that s1, construction diversion is conducted; s2, earthand stone excavation is conducted; s3, gabion retaining wall construction is conducted; s4, three-dimensional geocell construction is conducted; s5, geocells are filled with ecological vegetation bags; s6, the ecological vegetation bags are stacked on a gabion box; s7, slope surface watering is conducted; s8, geotextile covering is carried out. According to the anti-scouring method, a method of combining plants and engineering materials is adopted to realize the coordination of a river system with the activities of animals, plants, microorganisms, and humans and to achieve the purpose of ecological restoration of a bank slope; meanwhile, through construction techniques such as plastic alloy steel geocell laying, backfill compaction of an ecological belt, a basalt fiber composite bar anchor rod, plant root fixation, and a lead wire gabion retaining wall, the stability of the bank slope is ensured, and the anti-scouring purpose is achieved; and on the other hand, based on the principlesof shrub and grass combination, species mutualism and merging, and deep root and shallow root system combination, reasonable allocations are performed at different water level areas to achieve the purposes of ecological restoration and landscape creation.