193 results about "Geologic hazards" patented technology

The invention discloses a system for predicting geologic hazard based on rainfall intensity, moisture content of slope soil and deformation. The system comprises an automatic rainfall gauge, a soil moisture sensor, an omnibearing tilt sensor, an omnibearing vision sensor, an embedded system and a monitoring center computer, wherein the automatic rainfall gauge is used for monitoring rainfall and rainfall intensity of a geologic hazard point; the soil moisture sensor is used for monitoring moisture in soil at the geologic hazard point; the omnibearing tilt sensor is used for detecting earth surface deformation and internal deformation of the geologic hazard point; the omnibearing vision sensor is used for evaluating geologic hazard scale; the embedded system is used for wirelessly transmitting video and monitoring data; and the monitoring center computer is used for predicting and forecasting the geologic hazard and comprises a communication module, a data receiving module, a rainfall and rainfall intensity-based geologic hazard prediction module, a slope displacement-time curve-based geologic hazard prediction module, a soil moisture, rainfall and rainfall intensity-based geologichazard prediction module and a soil moisture content and slope deformation-based geologic hazard prediction module. The system has the advantages of complete monitoring means, accurate prediction andforecast, high intelligence and on-line real time.

The invention discloses an intelligent geologic hazard comprehensive monitoring system and a multi-level forecast analyzing method. The system is a monitoring device which can be assembled and disassembled according to the requirement, and is applicable to outdoor assembly. The system is a shaft after assembly, measures in fixed time and wirelessly transmits information of slope underground depth deformation to a system information analysis control unit form the ground, acquires an image in a monitoring area by continuously scanning in fixed time by a laser scanner, and is provided with a multipoint fixed point ranging laser to carry out accurate range measurement on a selected object. The system and the method take the geologic hazard underground depth deformation and ground surface direct deformation displacement as main monitoring forecast foundation, and divide hazard forecast into four levels, namely a preparing level, a pre-warning level, an early forecast level and a hazard forecast level by combining with assistant parameters and induction factors of physical and chemical field variations, thereby integrally completing the functions of monitoring, analyzing and forecasting on site.

The invention discloses a high-sublevel subdivision mining method of a moderately thick heavy-pitch waste-rock-containing interlayer phosphate orebody along a strike. The high-sublevel subdivision mining method comprises four steps of exploiting, mining preparation, cutting and recovery, wherein a footwall intermediate-section main roadway is respectively arranged on a high sublevel along a top plate and a bottom plate of the orebody, and the intermediate-section main roadways of the top plate and the bottom plate are connected through a communication channel at intervals of 100m, therefore reduced roadway cutting construction, small development rate and simple process are achieved; after overall blasting of a stope is finished, a large amount of concentrated ore drawing is carried out, and the production efficiency is high; tail sand is adhered and filled after space pillars are mined first, then rooms are evacuated, and the rooms are filled with waste rocks or tail sand in a non-adhering way, thus recovery rate is high; and the high-sublevel subdivision mining method has little damage to the environment and capabilities of changing oredressing tail sand and waste rocks generated in open-air production into valuables and reducing geological disaster from happening. Due to the adoption of the high-sublevel subdivision mining method disclosed by the invention, ore recovery rate can be increased, ore dilution rate and emission of mine wastes are reduced, capacity of slag disposal pit is relatively increased, expropriation of land is decreased, and mineral land harmony is promoted.

The invention discloses a geological prediction system for constructing a tunnel passing through coal measure strata. The condition of the tunnel passing through the coal measure strata is specifically analyzed in a way of geological record, geophysical prospecting analysis or advance borehole according to specific condition based on macroscopic analysis which is adopted in sequence; the obtained information is classified so as to predict the geological condition of a main job and the geologic hazard of the coal measure strata; and the correlative information and data are used for completing the construction of the geological prediction system for constructing tunnel passing through coal measure strata. The invention provides a system for perfectly and exactly predicting the geology for constructing the tunnel passing through coal measure strata.

The embodiment of the invention discloses a mine geological disaster dynamic identification and monitoring method based on multi-source remote sensing data. An optical remote sensing technology, an unmanned aerial vehicle airborne laser radar technology, an artificial corner reflector technology and a satellite-borne synthetic aperture radar technology are fused; an airborne laser radar can effectively remove ground vegetation; an accurate deformation profile and a ground fracture steep ridge distribution condition are obtained; archived high-precision optical image data are utilized to comprehensively analyze and describe a deformation development history, high-resolution remote sensing image change detection and feature recognition are utilized to search disaster signs, the airborne laser radar is introduced to acquire high-precision dem data, and topographic effect influence in InSAR data processing is effectively removed; an artificial corner reflector array is arranged, the numberof coherent points in a key area is increased, the coherent point distribution is optimized, and the interference phase unwrapping effect is improved; a traditional time sequence InSAR data processing technology is optimized, and a high-precision time sequence deformation curve is obtained by using CR-InSAR.

The invention discloses a karst tunnel water outburst and mud outburst overall process gradual dynamic risk assessment method. The method includes the steps that 1, in the tunnel investigation stage, the tunnel address and the hydrogeological information of the surrounding rock near the tunnel are obtained, that is, the hidden danger environment for water outburst of the tunnel is obtained, and the risk states of the geological conditions of all segments of the tunnel are known; 2, the risk rating value is worked out according to an expert evaluation vector and a factor weight vector, and consistency check is conducted; 3, danger factors are introduced to influence factors of risk evaluation, the hidden danger environment and the danger factors are considered comprehensively, water outburst risk evaluation is conducted, and the segment distribution feature with the tunnel water outburst risk is divided; 4. The values of all indexes are corrected in real time in combination with actual field construction so as to achieve dynamic evaluation of the water outburst and mud outburst risks. The purposes of optimizing construction organization design and avoiding medium and large water outburst geological disasters are achieved through dynamic construction risk evaluation and control, and important data are provided for later-period tunnel operation risks, and the method has very wide application prospects.

The invention relates to an earthquake warning system based on communication optical cables. The system can perform real-time monitoring on geological conditions in the area where optical cables are laid, and judge whether an earthquake occurs according to the vibration information from the optical cable, and uses the difference between the seismic wave transmission speed and the light transmission speed to realize early warning function; and the earthquake warning system can transmit threatening strong earthquake information to various towns which can be threatened a few seconds or even more in advance so as to reduce the loss caused by a strong earthquake as possible. The system can also be used for monitoring vicious incidents such as local geologic hazards like landslides and mudflows, and man-made destruction, and has the advantages of wide monitoring range, high sensitivity, good reliability, low cost and high utilization rate.

The invention relates to a computational simulation method of a flow slide catastrophe of a rock and soil material, belonging to the technical fields of computational rock and soil mechanics, geologic hazard prevention and control and geologic environment protection. Aiming at the limitation that the conventional grid-based computing method is only suitable for small-deformation analysis, the invention discloses a computational simulation method of an entire flow slide catastrophe process of the rock and soil material based on smoothed particle hydrodynamics (SPH). According to the method, a Navier-strokes equation is used as a control equation, solid phase and liquid phase of the rock and soil material are described by using a sub-load face Cambridge model and an incompressible fluid constitutive model respectively, porous medium theory and darcy law are introduced to calculate solid-liquid coupling acting force, and a computation model, which considers the full coupling of water and soil, of the flow slide catastrophe of the rock and soil material, is established. According to the computational simulation method, the entire process of large-deformation flow damage of the rock and soil material can be effectively represented, and the fluidization characteristic of the rock and soil material is captured, so that powerful scientific basis is provided for engineering design, engineering construction, disaster prevention and reduction and the like of high-risk areas of the flow slide disaster, and meanwhile, application of the computational rock and soil mechanics in the technical fields of actual engineering construction, geologic hazard prevention and control and the like is forcefully promoted.

The invention belongs to the field of geologic hazard and prevention and control, and in particular relates to a self-advancing slide rail pendulous ground fissure deformation monitoring device. The device comprises self-advancing soil anchors, a bracket, an angle scale, a measuring line, a pulley, a pulley fixing rod, a slide rail type pendulum, a graduated slide rail box and a fixing clamp, wherein the bracket is fixed in stratums on the two sides of the ground fissure with the self-advancing soil anchors; a vertical relative movement angle of the ground fissure is measured through the angle scale; horizontal and vertical composite displacement can be measured through the slide rail type pendulum and the measuring line; and the measuring line can be replaced according to the requirements of different measuring ranges. By utilizing the self-advancing soil anchors, quick self-advancing installation and recovery of the monitoring device can be realized, and the slide rail pendulum is utilized to tension the measuring line and reduce the influence of environment on a tension device. The measuring line can meet the requirements of different measuring ranges and the length can be adjusted conveniently according to the requirements. The horizontal displacement and the vertical displacement of the ground fissure are measured by using a system consisting of the measuring line, the angle scale and the graduated slide rail box. The device has the advantages of simple structure and convenient assembling and disassembling.

The invention discloses a geologic hazard emergency monitoring forecast system and a method for analyzing the forecast of the system. Disposable radar responders move together with landslide or debris flow, flood and the like on ground surface by irregularly launching the disposal radar responders in a geologic hazard region which is formed or is forecasted to be formed. Through technology of radar scanning, running tracks of the radar responders can be monitored and compared intuitively and quickly; the place and the time formed by the hazard can be further analyzed and determined combining with status of topography and landform; and basic causes and important information, such as a territorial scope which is about to be affected by the hazard, forecasted imminent time slice and safe escape route, and the like, can be acquired assorted with rainfall, earthquake and other information. The system and the method have a standard product structure and low cost, and have incomparable advantages on the forecast of geologic hazard which has clear cause, certain predictability, large scale and short-terming burst under quick response.

The invention belongs to the technical field of a gelling agent for geologic hazard control as well as filling control of goaf and waste laneway or collapse craters after exploitation of other mines, and provides a formula and a method of a novel polymer composite gelling agent for grouting. The gelling agent comprises the following components in percentage by weight: 10-25% of bentonite, 5-20% of cellulose, 5-20% of vegetable gum, 10-15% of calcium hydroxide, 10-25% of inorganic hygroscopic agent, 0.5-1.5% of inorganic dispersant, 0.5-2% of inorganic flocculent, 6-18% of organic flocculent, and 5-15% of alkali metal carbonate. The gelling agent is used for processing and crushing, mixing with water, and injecting to slurry for gelling. According to the invention, the characteristics of high-hydroscopicity mineral matters and hydroscopic synthetic resin are sufficiently absorbed and utilized, and various ion groups are introduced and adjusted to obtain specific performance, so that the gelling agent has strong water solubility, can form hydrophile and water-insoluble gel in the slurry, and has excellent adhesion force to solids and dissolved matters in the slurry, good gelling property, strong water control function, high and adjustable jelling speed, low cost and no pollution.

The invention relates to a geotechnical engineering cataclysm dynamic real-time intelligent early warning method based on displacement monitoring. The method is characterized by comprising the following steps of: getting real-time displacement monitored data of an object by geotechnical engineering field displacement monitoring; constructing a displacement rate-time sample database; establishing an ANFIS (adaptive network-based fuzzy inference system) by an MATLA (matrix laboratory); training the ANFIS by a displacement rate-time sample to get a displacement rate intelligent prediction model; setting a judging basis of a cataclysm displacement rate threshold by combining expert experience with the specific geotechnical engineering object; giving out a displacement rate predicated value of the next time period by the ANFIS; comparing the predicted value with the cataclysm threshold, if the predicted value is more than the cataclysm threshold, performing early warning; otherwise, updating sample data with the actually measured displacement data of the next time period, and re-training the model; and predicting the displacement of the next time period till the predicted value is more than the cataclysm threshold. The method disclosed by the invention has the significant effects that the method is generally suitable for side slopes, tunnels, ground foundations, geologic hazards and other various geotechnical projects; and the reliability in cataclysm dynamic early warning is high, and the operation is simple.

The invention relates to a geologic hazard monitoring early-warning system based on image recognition and an early-warning method thereof. The invention firstly provides the early-warning forecast monitoring system based on combination of big data calculation analysis and image recognition. Through selecting critical geologic hazard images in geologic hazard pictures which occur in different areas, a critical key dimension which influences motion of a hazard member is extracted, and furthermore a characteristic data threshold is obtained, thereby forming an image database. The image database is used as a reference for realizing effective hazard early-warning, thereby remarkably improving early-warning forecast accuracy, and overcoming problems such as data error and data loss caused by a traditional monitoring method. The image database formed in the method of the invention contain the critical image data of the hazard members in different areas, and geologic hazard monitoring early-warning can be performed on researching objects with different geologic structures in different areas. The geologic hazard monitoring early-warning system has advantages of wide application range and wide application prospect.

The invention discloses a rolling stone collision protective structure for a bridge pier and aims to effectively enhance the safety of the bridge pier of a bridge. The protective structure comprise a protective steel plate member (20) fixedly arranged outside a pier column, wherein a cushion space is formed between the protective steel plate member (20) and the surface of the pier column; and a three-dimensional reinforcing steel bar grid (40) and a foamed cushion layer (30) are fixedly arranged in the cushion space. The protective structure can effectively reduce the collision effects of geologic hazards, such as rolling stones and debris flow and the like on the bridge pier of the bridge and effectively enhance the safety of the bridge pier of the bridge under the condition that the bridge pier of the bridge is under severe threat of rolling stone collision in areas with frequent rolling stone hazard, and has the advantages of simpleness, convenient installation and replacement, economy and practicability, and high adaptability. The protective structure is suitable for reinforcing a conventional bridge pier or building a new bridge pier and can be used as an anti-ship collision facility for an underwater bridge pier to effectively reduce ship collision effect applied to the bridge pier and lighten damage on a ship.

The present invention provides an incident plane body wave excitation method in either direction in slope seismic response value simulation, belonging to the geologic hazard analysis and control field. The method comprises six steps: slop modelling; time series analysis starting of each node on the slope bottom excitation boundary of the incident plane body wave excitation method in either direction; stress component time-history calculation generated at each node at the slope bottom through different seismic phase body wave excitation; superposition time-history calculation of different body wave seismic phase fluctuating stress component at the slope bottom excitation boundary nodes; slope bottom excitation boundary node body wave excitation input; and dynamic response result extraction of each node in the slope model. The incident plane body wave excitation method in either direction in the slope seismic response value simulation can solve the problem of the incident seismic wave input in either direction in the slope seismic response value simulation, realize the incidence of the seismic plane body wave in either direction including oblique incidence and vertical incidence, reveal the influence of the seismic plane body waves with different incident directions on the slope seismic dynamic response and the diversity of the seismic slope failure, and has great significance.

The invention provides a system for evaluating danger caused by geologic hazard to city underground gas network which relates to the gas network danger evaluating technique field. The system solves problem of unable processing evaluation according with detail geological condition and unable combining city geologic hazard with network risk evaluation existed in underground gas pipeline risk evaluation system. A city history geological data module of the system is used for providing geological data and geologic hazard type; a network figure data module is used for providing a figure data of the city underground gas network; a geological hazard dangerous area subarea module is used for dividing the city underground gas network; a geological hazard evaluating module is used for processing danger degree evaluating to the geological hazard dangerous subarea; a weighing adjustable module is used for processing weighing adjustment to the danger degree evaluating result; an evaluation recording module is used for recording the danger degree evaluation result; an input / output background manage module is used for transmitting data and instruction between the user and the module. The system is suitable for evaluating danger of geologic hazard to the gas network.

The present invention discloses a coal-mine combined seismic holography prediction method, and relates to the field of the exploration method technology. The method comprises the following steps: employing a ground three-dimensional seismic exploration method to predict whether there are provided large concealed geological structures or not in the position of a minable seam, and determining concrete positions and ranges of the large concealed geological structures if there are provided large concealed geological structures; and employing a downhole slot wave exploration method to determine the concealed geological structures observed through the three-dimensional seismic exploration method in a working surface, determine the concrete positions, ranges and the areas of stress concentration; fusing a P wave and an S wave detected by the slot wave seismic exploration in the coal seam with the P wave of the three-dimensional seismic exploration and perform prediction and inversion of the lithology and the structure of the coal seam. The coal-mine combined seismic holography prediction method greatly expands the three-dimensional seismic low-frequency information, effectively inverts the prediction structure and the lithology information and improves the prediction precision so as to effectively prevent from the occurrence of the mining geology disasters, finally assist in realization of risk-free tunneling and avoid the occurrence of tunneling accidents.

The invention provides an automatic monitoring and early warning method and system for tunnel section deformation. The method comprises the steps of collecting surrounding rock deformation data in tunnel monitoring measurement parameters through a laser scanner; acquiring selective measurement parameters in the tunnel monitoring measurement parameters through a comprehensive tester; analyzing thesurrounding rock deformation data and the selective measurement parameters, and judging whether a measured value in the surrounding rock deformation data at the current moment is greater than a firstthreshold value or not and whether a measured value in the selective measurement parameters at the current moment is greater than a second threshold value or not; and judging whether a judgment resulttriggers an early warning condition or not, and performing early warning after the early warning condition is triggered. All-weather and 24-hour automatic monitoring and early warning are realized, through real-time acquisition, real-time analysis and real-time early warning technologies of tunnel intelligent monitoring data, response time can be won in advance for occurrence of tunnel geologicaldisasters and engineering treatment, disaster accident loss is reduced to the maximum extent, safety of construction tunnels and operation tunnels is guaranteed, and the method has important engineering application value and huge social and economic significance.

The invention discloses a method for characterizing spatio-temporal evolution of ground settlement, and belongs to the field of geological disasters. According to the method for characterizing the spatio-temporal evolution of the ground settlement, radar image data is involved; the spatio-temporal evolution of the ground settlement of a region is quantified, so that the change of the ground settlement rate of each ground pixel can be mastered, and the development trend and direction of historical ground settlement can be showed; and therefore, a basis is provided for urban disaster preventionand urban planning, a specific method for solving a ground settlement disaster is looked for, and the time and the economic cost are saved for urban disaster prevention and control.

The invention discloses a filling mining method of a near-horizontal ore body. The method comprises the following four steps: (1) preparing mining, namely digging a vein-following horizontal roadway in the trend of the ore body; (2) cutting, namely perpendicularly constructing an upward incision to a mining preparing horizontal roadway in every certain distance in the mining preparing horizontal roadway, and also constructing two cutting horizontal roadways in the trend in the upward incision; (3) stopping, namely performing shallow hole drilling and blasting on the two sides of the upward incision; (4) filling mill tailings, namely filling a stopped mining area. According to the method, the situation that the stopping and the filling for all ore pillars must be reserved in a traditional mining method is realized, the recovery rate of ore is improved, besides a guag is completely filled, and a geologic hazard caused by a mining activity is effectively reduced.

The invention discloses a sound wave monitoring plant for landslide critical-slide, which comprises a pressure field sonic sensor, a monitoring host and a personal computer provided with landslide geologic hazard monitoring software, wherein the pressure field sonic sensor, the monitoring host and the personal computer provided with the landslide geologic hazard monitoring software are orderly connected; the monitoring host further processes a signal acquired by the pressure field sonic sensor; and the personal computer is used for storing, displaying, analyzing and prewarning the signal. The invention monitors the landslide by utilizing the sound wave information generated by rock rupture and friction when the sliding mass is in the impending state, can acquire predictive information before the sliding mass comes into the impending state and previously gives warning according to the software analysis, thereby reducing the loss of life and properties of people near the sliding mass due to the landslide.

The invention discloses a landslide susceptibility evaluation method based on a fractal-machine learning hybrid model. The method comprises the following steps: selecting landslide susceptibility evaluation factors; analyzing a fractal relationship between historical landslide geological disaster points and landslide susceptibility evaluation factors in the experimental area based on a fractal model, and calculating a preliminary landslide susceptibility index on the basis of solving fractal dimensions between the landslide susceptibility evaluation factors and the historical geological disaster points; constructing a multi-scene sample data set: constructing sample data sets of three different scenes by the three non-landslide samples and a unified landslide sample; taking the sample datasets of the three scenes respectively as inputs of the NB model and the SVM model to carry out landslide susceptibility evaluation research. Compared with a negative sample generated from a low-slopearea and a non-landslide area in traditional landslide susceptibility research, the negative sample quantitatively selected based on the fractal model can improve the quality of a landslide susceptibility evaluation sample, and the use of the fractal-machine learning hybrid model can improve the accuracy of landslide susceptibility evaluation.

The positive landform remote sensing image preparation method concerns that according to traditional remote sensing mapping method, obtain current azimuth angle, incident angle of sun by sensing data; correct forming positive landform factor by radiation and shadow; form positive landform remote sensing image fit to people vision habit by data fusion. The characteristic is that the formation of image just lies on original satellite data, needs no DEM, and can realize multiple dimension scales formed image fit to application and research of Quaternary Period landform, land detection, geologic hazard, prospecting in geology, hydraulic engineering research and military affairs, etc.

The invention provides a dangerous rock body slope geological disaster remote early warning system and method based on parameter fusion. Multiple-parameter monitoring is used. Through fusion analysisof pressure, inclination, displacement and dangerous rock body image information, the geological safety of the measured side slope is reasonably judged. The system is wide in coverage range, has a data remote transmission function, is suitable for multi-dangerous rock slope geological disaster remote early warning of multi-dangerous rock early warning in remote areas, enlarges the slope monitoringrange, can realize effective monitoring of slopes in remote areas, and meanwhile, reduces the manpower cost investment.

The invention discloses a continental margin hydrate environment geology dynamic monitoring system and method. The method comprises the steps of monitoring the dissolved methane flux, the dissolved oxygen content, the pH value, the Eh value and other parameters of a leakage source in a water body on the basis of a seabed multi-parameter sensor technology; monitoring the free methane flux leaked ina bubble plume mode by combining an ultrasonic flowmeter; based on a distributed optical fiber technology, monitoring the stress and strain of a potential unstable slope, so that comprehensive monitoring of landslide and environmental changes for the slope with natural gas hydrate existing on a continental margin is achieved; and through the establishment of a small-scale submarine observation network, unified power supply and data acquisition, monitoring the dynamic activity of a hydrate reservoir and the resulting environmental effects, so that the in-situ, long-term and continuous monitoring and early warning capabilities are formed, the mechanism and rules of geological hazards possibly induced by hydrates are mastered, technical support is provided for the hydrate exploitation process, the practical value is high and implementability is high.

The invention discloses a method and a system for rapid risk classification of rainstorm secondary geological hazards in a power network passageway. The method comprises the following steps: dividinga belt-shaped area of an important power network channel by pole and tower coordinates of a transmission line; acquiring topographic data and historical data of geological hazards in important channels of power network; according to the terrain data, dividing an important channel of the belt-shaped power network into a plurality of first-level grids; according to the topographic data of the firstgrid and the historical data of geological hazards, dividing the geological hazard grades of the important routes of the power network and the historical occurrence grades of the geological hazards ofthe important routes of the power network; according to the product of geological hazard terrain grade and geological hazard history grade, dividing the geological hazard risk grade of the importantpassageway of the power network. The invention utilizes topographic data and geological hazard historical data of an important channel of a power network, and can realize rapid division of the secondary geological hazard risk of a rainstorm in the important channel of the power network.

A detecting method for monitoring mountain skidding and geological calamity characterized in that, a number of inspection wells with built-in steel sleeves are arranged in a monitoring region, arranging control device connected with ground control survey instrument and pushing device into the inspection wells, the control device controls the pushing device configure a plurality of magnetosensitive sensing unit onto the internal walls of the steel sleeves, the ground survey instrument then continuously measure the stress variation information on the magnetosensitive sensing device.

The invention discloses a floating sight cable stayed bridge, which comprises a pier, a support frame, a guy cable, a bridge body and an abutment connecting device, and has the structural key points that: the floating sight cable stayed bridge also includes an anchor mooring positioning device, and the pier is a floating pier. The invention has the advantages that: the floating sight cable stayed bridge breaks through the history that a pile foundation work pier can not be applied because of the depth of a channel (water area) and geologic hazard and overcomes the difficulties of transportation island and continent caused by geographical environment condition and high construction cost, thereby bringing convenience to residents and bringing benefits to the society. The invention is also a pioneering work of the construction of Confederation Bridge in China. The invention can be used for a plurality of functions: the floating sight cable stayed bridge can be used for the transportation of island and continent, can be provided with an overwater or underwater star hotel, entertainment and other projects, can be further taken as a beautiful landscape architecture of city, and creates positive technical specifications for building watery city, community, park and the place of swimming, lying fallow and taking a holiday, thereby being a discus basalis or a sample for creating the architectural style of the watery city in the future.

The invention discloses a geological hazard early-warning and monitoring device. The device includes an outer housing. A cavity is arranged in the outer housing. A support column is mounted at a top.A first connecting rod is arranged at one side of the support column. A horizontal rod body of the first connecting rod is fixedly connected to a side wall of the support column, and a vertical rod body is fixedly connected with a rain gauge and faces upward. A second connecting rod is arranged on the other side of the support column, and shows an inverted "L" shape. A horizontal rod body of the second connecting rod is fixedly connected to the side wall of the support column, and a vertical rod body is fixedly connected with a camera and faces downward. Fixing rods buried under the ground arearranged at a lower end of the outer housing. Multiple soil moisture sensors are arranged from tops to bottoms on outside walls of the fixing rods. The soil moisture sensors are spaced at a certain interval. Through arranging the rain gauge, the amount of precipitation of a current place can be measured and recorded, and real-time monitoring and first-level alarming can be carried out; through arranging the soil moisture sensors, second-level alarming can be carried out when an abnormality occurs; and through arranging a pushing device and an alarming device, three-level alarming can be carried out for a landslide.

The invention relates to the technical field of geological disaster prevention and control, and discloses a karst surface collapse analysis method, which comprises the following steps of obtaining a geological structure, a hydrological structure and a construction collapse condition of a target area; dividing the collapse process of the target area into an engineering construction penetration stage and a sudden collapse stage; in the engineering construction penetration stage, judging the penetration mode of the karst cave or the soil cave in the construction process according to the construction collapse condition; and in the sudden-change collapse stage, obtaining the change condition of the geological structure and the change condition of the hydrological structure, and judging the collapse type of the karst cave or the soil cave so as to determine the surface collapse forming mechanism of the target area. According to the method, the penetration effect analysis of engineering construction is introduced, and the surface collapse formation mechanism of the target area is obtained by combining the change conditions of the geological structure and the hydrological structure, so that the karst surface collapse formation mechanism caused by the penetration effect of engineering construction can be accurately determined, and effective basis and guidance are provided for urban related disaster prevention and reduction work.