643 results about "Soil material" patented technology

Organic compositions, used neat or in concentrate, are effective in removing complex organic soils from wood, metal and other hard surfaces. The compositions comprise nonionic surfactants, silicone surfactants, anionic surfactants, hydrotropes and other optional functional materials including sequestrants. Substrates such as laundry and heavily soiled hard surfaces containing a substantial proportion of organic / inorganic soils such as greases, oils and other hard to remove soil materials are readily cleaned by the cleaner compositions of the invention.

The invention relates to an ecological protection method for a high steep side slope. The method mainly comprises the steps of slope surface treatment, concrete shotcrete and rock bolt support, vegetating hole arrangement, net spreading, spray material preparation, granule spray sowing, maintenance, management, and the like. In the method, guest soil materials such as humus loam rich in organic matters and clay are utilized to undergo a granule reaction after mixed with a granule agent at the moment of spray sowing so as to form a greening template which has the same high order granule structure as natural soil and strong erosion resistance and can suppress water and soil loss. After a diversified mature plant community which is in harmony with surrounding vegetation environment is formed, the slope surface can be protected, which can effectively resist diseases and insect pests and maintain the ecological balance. Post maintenance management and expenses can be saved. All used materials can be naturally degraded, have no pollution to the environment and can purify air and beautify the environment. Equipment of the method does not need to be hung on the slope surface for construction, and spray sowing operations are carried out only below the slope surface, thus the method has high construction speed and safety. The method is suitable for slope surfaces which are difficult to green, and the like, such as various high steep and unstable slope surfaces, bare slope surfaces having high greening expected values, and the like.

Organic compositions, used neat or in concentrate, are effective in removing complex organic soils from wood, metal and other hard surfaces. The compositions comprise nonionic surfactants, silicone surfactants, hydrotropes and other optional functional materials including sequestrants. Substrates such as laundry and heavily soiled hard surfaces containing a substantial proportion of organic / inorganic soils such as greases, oils and other hard to remove soil materials are readily cleaned by the cleaner compositions of the invention.

The invention discloses a preparation method for an artificially synthesized transparent soil material. The transparent soil material comprises baked silica sand particles and colorless pore fluids which have the same refractive index, wherein the pore fluids are mixed fluids of 12, alkane and 15# white oil; during preparation, a glass bar is used to stir constantly so as to ensure intensive mixing; a vacuum chamber is adopted for vacuumizing so as to remove residual air in a mixture until the mixture is transparent; finally, a consolidometer is adopted for consolidation. According to the invention, the preparation method is simple and convenient to operate and easy to implement; compared with other preparation methods, the preparation method is wide in material sources, low in cost, pollution-free and non-hazardous and can achieve a better transparent effect; the prepared transparent soil can be effectively used for model tests, and metabolic un-embedding visual observation in soil bodies can be realized.

The invention discloses an ultrasonic remediating method for heavy metal polluted soil / slurry, which comprises the following steps of: performing ultrasonic cavatition on the slurry so as to scatter soil aggregates and resolve heavy metals combined with soil particles into pore water; after ultrasonic effect is stopped, adsorbing nearly all the heavy metals on the fine particles according to the characteristic that the competitive adsorption capacity of the fine particles is stronger than that of coarse particles; and separating the coarse and fine particles with a vibration sieve so as to obtain clean coarse particles and heavy metal-enriched fine particles, wherein the coarse particles after being simply dehydrated can be used as soil materials; and the fine particles after being subjected to slurry-water separation treatment and then solidification / stabilization treatment can be safely used and sanitarily landfilled. The method is high in treatment efficiency, can treat the soil / slurry by adopting a continuous operation way, and is low in treatment cost. The obtained coarse particle material has good engineering properties; and the obtained a few of fine particle materials containing a large amount of heavy metals can be effectively treated and controlled in pollution by adopting a solidification method.

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 provides a large filling bag ecological embankment and revetment building method for a river lake channel. The method comprises the steps that (1), on the basis of cleaning and leveling, an embankment structure is filled with cleaned river lake bottom mud layer by layer through the large filling bag technology until the embankment structure reaches up to a designed elevation of the embankment top and the height of 0.5-1 m beyond the designed elevation is reserved through filling construction; (2), the cleaned river lake bottom mud is filled through a land pump, or special complete equipment and corresponding construction technologies are adopted to directly conduct mechanical paving and filling, and then the filled cleaned river lake bottom mud is sewn into bags; and (3), filling soil materials of the large geotextile filling bag embankment structure are taken from local resources, the bottom mud obtained through river lake regulation and channel excavation and cleaning is used as the filling soil materials, the initial water content of the filling soil materials is controlled within the range from 50%-80%, and the large filling bag embankment structure which is layered appropriately is adopted according to the practical situation. According to the method, the design is reasonable, the process is simple, construction is easy, operation is convenient, cost is low, popularization is easy, the ecological functions are good, and the method is applicable to ecological management and ecological channel construction of river lakes in soft soil areas.

The invention discloses a polymer emulsion coated slow release fertilizer taking a nanomaterial as a carrier. A preparation method of the fertilizer comprises the following steps of: uniformly mixing a treated nano soil material, approximately fermented fungi residues and a nutritional raw material; and adding an organosilicone modified acrylic ester emulsion which is mixed with a crosslinking agent into the mixture and mixing uniformly to prepare the polymer emulsion coated slow release fertilizer which is provided with a water repellent film on the surface and takes a nanomaterial as a carrier. The fertilizer has the advantages that: adsorption of water and the fertilizer among carriers is realized, a basis is laid for long-acting slow release of the fertilizer, the fertilizer effect and slow release performance of the slow release fertilizer are enhanced, and the quality of an agricultural product is improved.

The invention discloses a soil pad compacting device for a construction site. The right end of the driving shaft is fixedly connected with a semi-conical gear, and the upper and lower ends of the semi-conical gear respectively mesh with a first bevel gear. The first bevel gear is fixedly connected with a driven shaft, and the end of the driven shaft bears The main body of the connecting device is rotated; the lower end of the driven shaft is fixedly connected to the screw rod, the screw rod is threadedly connected to the threaded sleeve, the lower end of the threaded sleeve is sleeved with the movable sleeve, and a buffer spring is arranged between the threaded sleeve and the movable sleeve. The device drives the driven shaft to reciprocate positive and negative rotation through the semi-conical bevel gear, and then drives the screw to rotate to realize the up and down movement of the pressure head while compacting the ground while driving the horizontal plate to move left and right intermittently to discharge soil, and the driving shaft drives the stirring through the gear set while compacting. The shaft rotates to stir the earth material to avoid solidification and no falling. The structural design of the device is reasonable and applicable, which greatly improves the efficiency of soil tamping on the building ground, and has a high degree of automation, and the integration of soil drainage and tamping.

The invention discloses an underground cavity analysis method considering nonlinear softening and dilation characteristics of surrounding rock. According to the method, a hyperbolic softening model based on the characteristics of the Hoek-Brown criterion is established according to the characteristic that the strength parameter of the surrounding rock of a tunnel is weakened with the increasing of the strain of a plastic zone, the model is based on the characteristics of a resultant stress-strain curve of the surrounding rock, and reflects the nonlinear characteristics of the surrounding rock through example verification, the model is applied to analysis for the surrounding rock subjected to strain softening in underground construction, and a new method for an underground cavity analysis is established by considering the nonlinear softening and non-associated flow characteristics as well as a nonlinear failure criterion of a rock mass; the solutions of the stress of the underground cavity, the deformation of the cavity and the radius of the plastic zone are obtained; according to the method disclosed by the invention, the dilation characteristics of the surrounding rock are considered according to a non-associated flow criterion, and with regard to the deformations of the surrounding rock under different plastic models, application example results indicate that the strain dilation of a rock-soil material with dilation and strain softening is considered to be safe.

The invention provides a crushing and sorting disposal system for construction waste and belongs to the technical field of construction waste disposal. The crushing and sorting disposal system for theconstruction waste specifically comprises a construction waste dumping site, a vibration feeder, a primary crushing and screening unit, a light substance flotation selecting unit and a secondary crushing and screening unit which are arranged in sequence. The primary crushing and screening unit crushes bulk construction waste and carries out primary screening on the bulk construction waste. The light substance flotation selecting unit carries out flotation selecting on raw materials obtained after crushing, screening and impurity removing, light substances and heavy materials are obtained, andthe heavy materials enter the secondary crushing and screening unit to be crushed into needed particle size and screened into recycled aggregate with different particle sizes. According to the crushing and sorting disposal system for the construction waste, the construction waste is divided into soil materials, waste wood, waste metal and steel and recycled aggregate with different particle sizes, finer and higher efficiency sorting and screening of the construction waste are achieved, and full recycling and resource utilization of all parts of the construction waste are achieved.

The invention discloses a polycarboxylic acid type high efficiency ceramic water reducing agent, a preparation method and application thereof. The preparation method provided by the invention comprises the steps of: mixing a macromonomer, acrylic acid, a neutralizing agent and a chain transfer agent under stirring, conducting heating to 70-110DEG C to obtain a mixed solution I; adding an initiator solution dropwise into the mixed solution I, and performing heating to obtain a mixed solution II; adding a chain terminator into the mixed solution II, stopping heating, and performing cooling to room temperature under stirring, thus obtaining the polycarboxylic acid type high efficiency ceramic water reducing agent. Compared with inorganic salt ceramic water reducing agent and other polycarboxylic acid water reducing agents, under the circumstance of the same adding amount and other conditions, the ceramic water reducing agent provided by the invention has better ceramic slurry fluidity. The water reducing agent has certain grinding aid effect on ceramic soil materials, and has an obvious reinforcing effect on ceramic biscuits. Adding of the water reducing agent can reduce the use of a grinding aid and a reinforcing agent use. The method provided by the invention has the advantages of easily available synthetic raw materials, mild reaction conditions, simple synthetic process, and easy industrial production.

The invention relates to a simulation experiment apparatus used for testing drawing force of an anchor pole and an application method thereof. The experiment apparatus comprises a testing box and a tester. The testing box comprises a box body (13); rock and soil materials (14) placed in the box body, wherein the rock and soil materials are used for testing; the testing anchor pole (18) which is inserted in the center of the rock and soil materials (14); and a contacting slice (15) arranged on the anchor pole (18). The tester comprises a pedestal (11), and a casing (13) arranged on the pedestal (11). One side of the pedestal (11) is provided with a vertical tube (9); a vertical stick is arranged on the vertical tube (9); a first cross bar (2) is arranged on the vertical stick (3), wherein one end of the cross bar (2) in inserted into the top of the vertical stick (3), and the other end is welded with a fixed pulley (23); a cross pipe (7) is arranged at the middle of the vertical stick (3); a second cross bar (16) is inserted in the cross pipe(7); and a dial gauge (19) is arranged on one end of the second cross bar (16). The apparatus possesses following beneficial effects comparing with existing technologies: the apparatus is capable of realizing a complete and realistic simulation of the drawing force mechanism of the anchor pole, providing more accurate and full experiment data for the design of actual anchor pole parameters, and ensuring the safety in practical applications.

A soil detection and planting apparatus. The apparatus includes a vehicle and a controller coupled to the vehicle. The apparatus further includes a planting device coupled to the vehicle, the planting device configured to plant seeds or plants into a soil material. The apparatus includes a ground penetrating radar sensor coupled to the vehicle. The ground penetrating radar soil sensor is configured to scan the soil material up to a designated depth beneath a surface of the soil material, wherein the ground penetrating radar soil sensor is further configured to provide a sensor feedback signal to the controller with respect to an intrinsic characteristic of the soil material. The controller is configured to instruct placement of a seed or a plant into the soil material based on the feedback signal.

Photovoltaic array performance monitoring is disclosed herein. A photovoltaic array performance monitoring system may include a data acquisition unit coupled with reference and ambient photovoltaic panels. The reference photovoltaic panel is equipped with a soiling removal unit which periodically removes deposited soiling materials from an active photovoltaic collection area of the reference photovoltaic panel. The ambient photovoltaic panel accumulates light obscuring soiling materials at a rate approximately equal to those of a proximate photovoltaic array. The data acquisition unit periodically sends electrical energy measurements of the reference and ambient photovoltaic panels to a computing system. Over time, the electrical energy output differential between the reference and ambient photovoltaic panels exceeds a predetermined threshold. The computing system evaluates the electrical energy measurements and determines when it would be cost-effective to clean the photovoltaic array. The result is output in a human cognizable format and / or a machine readable format.

The invention relates to a mechanical property test device, in particular to a test device for observing the mechanical property of an interface between underwater soil and a structure, which is especially suitable for researching the mechanical property of the interface between the underwater soil and the structure in a hydraulic building (structure). The test device comprises a fixing mechanism, a horizontal movement mechanism, a soil box and a loading system, and an electro-hydraulic servo movable and static universal testing machine is used as a main machine frame. A designed soil material is loaded in the soil box fixed on the horizontal movement mechanism. A structure test block is arranged on an upper chuck of the electro-hydraulic servo movable and static universal testing machine, a normal stress is applied through the vertical loading system, and the shear mechanical behavior of the interface between the underwater soil and the structure under normal stress and complex stress paths can be represented through the horizontal loading system. The normal force and the shear force in the interfere shear test are measured through a load sensor, a vertical displacement meter arranged on the top surface of the structure test sample is used for measuring the normal displacement of the interface in the test, and horizontal displacement meters arranged on two sides of the soil box are used for measuring the shear displacement in the test.

The invention relates to a mushroom cover material prepared by using vinasse biogas residues as materials and a preparation method. Thanks to an organic combination of the biogas residues and common soil material, the common soil particle generates more millipores, the permeability, the hydroscopic property, the moisture retention, the organic matter and other nutrient substance are greatly improved, the mushroom culture yield is steadily increased, and synchronously the reuse of the biogas residues is realized and the original turfy soil resources are protected; the preparation method for the mushroom cover material is especially suitable for preparing mushroom cover material with the biogas residues which is the production of a distillery, an alcohol distillery and a large-scale biogas project using vinasse as materials.

The invention discloses a soil improvement and preparation all-in-one machine for salvia miltiorrhiza cultivation, comprising a rack, a power input shaft, soil turning-up parts, a soil mixing part, and an auxiliary material adding part, wherein the rack is of a welded-type structure and used for installing other components; the soil turning-up parts are a plurality of plough blades fixed at soil inlets at the front side of a soil material-mixing cavity, and used for turning up the soil; the soil mixing part is used for mixing the soil with auxiliary materials; the auxiliary material adding part is used for adding the auxiliary materials; and the power input shaft is installed on the rack and used for transferring power. According to the invention, the soil improvement and preparation all-in-one machine is dragged by virtue of a tractor, and the soil on the earth surface is lifted into the machine by the plough blades on the front side of the machine at first, and then an opening of an auxiliary material storage box for organic fertilizers and straw is opened, and straw and organic fertilizers are continuously added, mixed and added in the soil. The soil is unloaded from the machine, soil covering wheels are standardized, and a mulching film soil covering wheels are used for mulching films, thus finishing soil improvement.

The invention discloses a construction method of a bamboo wood reinforcement bidirectional enhanced part-cut and part-fill weak roadbed, comprising the following steps of: (1) machining a bamboo wood; processing a bamboo sheet; and manufacturing a bamboo rib cage, a bamboo rib grid and a bamboo rib U-shaped anchor nail; (2) flattening a field and setting out a pile position; (3) utilizing a vibration shock method of a vibration immersed tube method to construct to form a bamboo rib cage crushed stone pile and paving a crushed stone cushion layer on a pile top; and (4) digging a step; paving, connecting and anchoring the bamboo rib grid; and backfilling a soil material and rolling and leveling. The construction method is characterized in that the bamboo rib cage can effectively improve the bearing capability and the stability of the crushed stone pile; the bamboo rib grid can reinforce the connection between a filling region and a digging region, the differential deposition is reduced, and sliding and instability of sliding along a filling and digging connecting face is prevented; and the construction method has the beneficial effects that a bamboo rib is used as a reinforcement material so that a construction industry is developed towards a low-carbon, energy-saving, environment-friendly and sustainable development direction, and saves the investment under the condition of meeting the requirements of roadbed bearing capability and deformation stability.

The invention discloses a rock-soil pressure sensor embedding device and an embedding method thereof. The rock-soil pressure sensor embedding device comprises a cylindrical thin-wall vessel, a base, an upper sealing strip, a lower sealing strip, a lining, an outer lining, a band and a pressure sensor. The embedding method includes: arranging the soil pressure sensor embedding device, digging an embedding hole, levelling the basal plane of the sensor, inverting the pressure sensor embedding device, backfilling the original soil material, extracting the cylindrical thin-wall vessel, and backfilling and so on. By means of the rock-soil pressure sensor embedding device and the embedding method thereof, the digged pit slot is small, the size of a protecting layer needed for the sensor is small, the embedding efficiency is improved, the measuring precision is improved, the protecting layer is avoided from loosening in vibration rolling, and the problem of embedding the sensor in coarse granular materials is solved.

The invention relates to the technical field of heat drying, and particularly relates to an energy-saving fruit drying room and a drying method thereof. Farmers adopt a natural airing method to dry fruits, but fruits have oil heads, dry strips, mildew and other phenomena, the fruits are attached by soils, are cracked and rotted worse if the fruits encounter severe weather, such as cloud and dust or cloud and raining, in harvest period. According to the invention, the fruits are dried with electricity or steam, thus the cost is high, the treatment capacity is small, and the efficiency is low. The energy-saving fruit drying room comprises a drying room, a heat supply device and a support, wherein the heat supply device and the support are arranged in the drying room. In the energy-saving fruit drying room, a heating fiery pit is arranged in the drying room, no energy is wasted, and the drying room is safe to use and cannot smoke drying objects; a fan is arranged above the fiery pit, andused for blowing hot air to the whole drying room, so that the dried objects are heated uniformly; a wood-grass-soil material in a damp absorption structure is arranged on a roof to naturally adjust the humidity, so that the quality is ensured, the drying efficiency is high, and the phenomena of oil head, dry strips or mildew in the natural airing process are avoided, the color of the fruits is good, and the processing is not restricted by weather.

The invention discloses a joint shearing whole-process damage constitutive model for determining a yield point based on a stress difference. The method comprises the steps that S1, setting a joint thin-layer microscopic unit body to be loaded and then enters a linear elasticity stage, the joint thin-layer microscopic unit body is an isotropic continuous medium, the microscopic unit body is instantaneously completed when being converted from a lossless state to a lossy state, and the process is irreversible; S2, defining an external load threshold F * based on a Weibull distribution function toobtain a damage probability density function of the mesoscopic unit body; S3, based on a rheological model mechanical element, simulating the load condition of a mesoscopic unit body by adopting thecombination of a spring and a friction plate to obtain a statistical damage constitutive model of the joints under the shearing action; S4, determining an external load threshold F * according to twoparts, namely damage and non-damage, of the rock and soil material after being subjected to load damage, and obtaining a damage evolution model and a joint shear deformation damage constitutive modelof the joint in the shear deformation process; S5, determining parameters m, u0 and us of the joint shear deformation damage constitutive model; and S6, verifying the correctness of the constitutive model.

The invention discloses a composite ceramic diluent with a green body reinforcing effect and an application method thereof. The application method comprises the steps of selecting an inorganic water reducer, a small molecular organic water reducer, a surfactant and a poly(carboxylic acid) polymer; optimizing the addition amounts of the above materials; compositing the above materials according to a certain proportion; and mixing a building ceramic soil material and the composite ceramic diluent uniformly by ball-milling. The prepared composite ceramic diluent is suitable for building ceramic formula soil, can greatly reduce water content in mud slurry, meets fluidity required by ceramic production, saves energy consumption of a spray drying tower and increases output of dry powder. The powder can increase the strength of the green body after being dried and pressed and is an ideal diluting and reinforcing material for the building ceramic mud slurry.

The invention discloses a raw soil building material modification method, belongs to the technical field of building materials, solves the technical problem that traditional raw soil building materials have low strength, high brittleness, poor resistance to water, and the like, first the performance of a raw soil material is improved by a chemical modification agent, a modified raw soil building block is prepared by physical pressure moulding technology, the performance of the raw soil material is improved significantly, especially aiming at vast raw soil resources in urgent need of development and utilization in Northern Shaanxi area, the method can largely use local raw soil materials, is convenient in material taking, economical and practical, strong in integrity, excellent in thermal processing property, simple in operation, easy in implementation and popularization, and to be more important, in line with the requirements of green building, and broad in application prospect.

The invention discloses a large-scale soil water-heat-force-salt four-field coupling effect test system and a method and relates to the research field of soil engineering soil body indoor freezing andthawing test. The system comprises a loading frame, a loading system, a water replenishing system, a temperature control system, a data acquisition and control system and a forming system, the loading system applies the axial load and the confining pressure to the soil body, the water replenishing system can simulate the supply of the soil body by different salt content and water head, the temperature control system realizes the constant temperature water supply for the freezing and thawing circulation and the water replenishing system of the soil body, the data acquisition and control systemmonitors the temperature and distribution of water and salt, pressure, the pore water pressure, the vertical and the transverse deformation of soil, the gas pressure of the gas pressure chamber in real time, controls data acquisition and imaging processing, and the forming system is used for compacting the designed soil material and shaping the soil body used for the test. The indoor soil body freezing and thawing process test of water-heat-force-salt four-field coupling effect is realized for the study of the freezing and thawing test of the soil.

An erosion control ballast and soil confinement mat for use in water flow conditions is provided. The mat is made of a non-buoyant, relatively heavy and substantially flexible material with a plurality of pores stamped or pre-cast therein that allow for the inflow of water, the establishment of vegetation growth through the mat, and the in-filling of the pores with supplemental ballast materials such as gravel or soil. The bottom side of the mat has protrusions that extend into the underlying surface to prevent horizontal shifting and confine soil materials and / or another erosion control mat such as an erosion control blanket or turf reinforcement mat, while also preventing migration of the mat itself under high shear force water flow. The top surface of the mat may be provided with flaps that cover the pore openings during periods of strong water flow to prevent excessive water flow from entering the pores and eroding the underlying soil.

The invention relates to the fields of building materials and environment-friendly energy-saving new materials, in particular to a method for modifying a raw soil material by utilizing a starch residue. The method comprises the following steps: (1) weighing raw soil and an inorganic cementing material according to a certain proportion, and uniformly mixing the weighed raw soil and inorganic cementing material to obtain a mixture; (2) drying the starch residue, grinding the dried starch residue into powder, weighing the powder according to a certain proportion, and adding water for boiling, so as to obtain a slurry; (3) weighing an admixture according to a certain proportion, and uniformly mixing the weighed admixture with the slurry obtained in step (2) to obtain a mixed liquid; (4) adding the mixed liquid obtained in step (3) into the mixture obtained in step (1) for powerful and uniform stirring, feeding the wet mixed material into a vacuum pug mill for pugging, and carrying out extrusion molding, wherein the mass of water accounts for 22-30% of the total solid mass; (5) naturally drying and curing the raw soil material molded through extrusion in step (4) for 28 days. The method is simple in preparation process; the modified raw soil material belongs to low-cost environment-friendly new building materials; the raw materials utilized in the preparation process are wide in source, so that the costs of the raw materials and transportation are greatly reduced.

The invention relates to a method for constructing a highly plastic clay core wall, belonging to methods for constructing novel dams at areas which are rich in water resources and soil materials and are suitable for constructing the dams by the local materials. The method includes the following steps: (1) clearing filling bedding surfaces; (2) laying highly plastic clay belts on the filling bedding surfaces, and laying gravel and soil core walls among the highly plastic clay belts; and (3) rolling and compacting the highly plastic clay belts and the gravel and soil core walls. The method is suitable for using the highly plastic clay to construct the gravel and soil core walls of anti-seepage bodies of the dams, and the dams which are constructed by the method through filling can meet the requirements of designed functions and the requirement on deformation.

The invention discloses a road paving material prepared by compounding building rubbish and limestone flour and a preparation method of the road paving material. Based on the total weight of the road paving material, the road paving material comprises the following components in percentage by weight: 1-15% of active micropowder, 20-40% of limestone flour, 40-60% of a soil material separated from the building rubbish and 0.02-0.08% of an excitant. The road paving material disclosed by the invention satisfies the index requirements of a road and takes good advantages of building rubbish.