110results about "Land reclamation" patented technology

The present invention relates to an automatic speed regulation and grouting regulation system for construction of a deep mixing pile in a reclamation area, the main steps comprising: first, configuring and installing a multi-modal sensing system (S101) to monitor key parameters, torque, energy consumption, grouting pressure and stratum permeability of a construction site in real time; constructing a data acquisition and fusion module (S102), integrating multi-sensor data, and forming real-time mapping of stratum-construction parameters; establishing a relation model of formation input and formation response through an extended Kalman filter (EKF) and predictive control (MPC) algorithm (S103), and intelligently evaluating formation compactness and grouting quality; on the basis of a feedback closed-loop regulation and control system (S104), the stirring speed, the grouting amount and the construction pressure are adaptively adjusted in real time, and precise control is achieved; through construction data storage and self-learning optimization (S105), the system records all construction data, and through a deep reinforcement learning optimization control algorithm, the long-term construction precision is improved.

A leaching and desalinating system for sandy soil in estuarine land reclaimed by sand blowing before planting greenery is provided. The leaching and desalinating system comprises a water pump and pipe assembly, a freshwater storage tank and a main diverting and draining channel. The water pump and pipe assembly lifts freshwater from a river to the freshwater storage tank through a water delivery pipe, multiple infiltration parts in which greenery is planted are provided on the waterside slope, the infiltration parts are connected to each other via multiple drainage infiltration channels. The present disclosure can quickly desalinate the sandy soil in land reclaimed by sand blowing at a low cost, improve the physicochemical properties of the soil, and provide a basic guarantee for the subsequent greenery planting on the sandy soil in land reclaimed by sand blowing.

The invention discloses a drag suction dredger rainbow blowing adjustable nozzle assembly and a bow spraying device and method, and belongs to the technical field of bow spraying. A rainbow blowing adjustable nozzle assembly of a trailing suction dredger comprises a nozzle part and a ball joint part used for connecting the nozzle part and a bow spraying pipeline on the dredger, and the ball joint part comprises a lower supporting frame, a lower supporting frame, a lower supporting frame, an upper supporting frame and a lower supporting frame, and one end of the lower supporting frame is connected with the bow spraying pipeline through a first flange; the upper supporting frame is fixedly connected to one side of the lower supporting frame, and a spherical groove is defined by the upper supporting frame and the lower supporting frame; the movable ball pipe comprises a reducer pipe and a ball body which are fixedly connected, the ball body is movably connected into the spherical groove, and the end, away from the ball body, of the reducer pipe is connected with the nozzle part through a second flange; by dynamically adjusting the spraying range of the nozzles, the slurry drop point can be flexibly changed, the effective operation range is remarkably expanded, drop point distribution is accurately controlled, the unevenness of the surface of a hydraulic reclamation area is effectively avoided, the flatness quality requirement is met, frequent ship displacement needed by drop point adjustment is reduced, and the construction efficiency is greatly improved.

The invention discloses a construction method for repeatedly utilizing dredged soil waste. The construction method sequentially comprises the steps that a harbor basin is dredged in a striping and layering mode through a grab dredger, and dredged soil is conveyed to a self-propelled mud barge and conveyed to a cofferdam construction area; dredged soil is used for carrying out hydraulic reclamation on the bagged sand cofferdam, and a temporary cofferdam structure is formed; dredged soil is blown and filled into the cofferdam to form an island building construction platform; wharf pile foundation and trestle construction is conducted on the island building platform; foundation treatment and backfill construction of land roads and storage yards are synchronously implemented; dismantling the temporary cofferdam, and recovering bagged sand and dredger fill of the cofferdam; the recycled material is mixed with a curing agent to produce solidified soil for land area backfilling. The method solves the problems that earthwork generated by a dredging mode in the prior art is prone to causing waste of a large amount of resources, and the disposal cost is gradually increased along with site shortage, and has the advantage that dredging engineering and water area island building construction engineering can be combined, so that resource recycling is achieved.

The utility model provides a passable pipe bag hydraulic reclamation cofferdam structure, which belongs to the technical field of cofferdam construction and comprises a geogrid layer fixedly arranged at the bottom of a river, a through bag layer laid on the geogrid layer, a lower cofferdam layer and an upper cofferdam layer. The cofferdam lower layer comprises a first left side pipe bag and a first right side pipe bag which are laid on the through bag layer, an inverted-T-shaped center area is formed between the first left side pipe bag and the first right side pipe bag, and the inverted-T-shaped center area is filled with a first layer of sand soil structure in a blowing mode. The problem that existing cofferdam construction is insufficient in stability and traffic capacity is solved, and the method has the advantages of being simple, easy to implement, high in operability, efficient and reliable and can be widely applied to cofferdam field construction.

The invention discloses a sludge solidification and hydraulic reclamation method based on an MICP technology. The method comprises the steps that the water content of bottom mud, the density of the bottom mud, the age of the bottom mud and the environment type are obtained; differentiated MICP serous fluid is prepared based on environment types, a seawater type cementing fluid is composed of seawater, urea and CaCl2, and a fresh water type cementing fluid is composed of deionized water, urea and CaCl2; after bottom mud is dug and stirred and diluted, a to-be-dredger-filled area is pretreated according to the environment type, a dispersing agent is added into the seawater environment, and a flocculating agent is added into the fresh water environment; respectively conveying a bacterial liquid and a cementing liquid into the diluted bottom mud through two channels, and mixing the bacterial liquid and the cementing liquid; and after mixing, the solidified sludge is immediately blown and filled to the area to be blown and filled. According to the invention, targeted curing treatment of seawater and fresh water scenes is realized through an environment-adaptive cementing liquid formula, differential pretreatment and dual-channel conveying control.

The invention relates to an automatic dredging control method based on target parameters of a trailing suction dredger, which comprises the following steps of: setting target parameters of dredging and loading operation to be controlled under a dredging and loading working condition, and constructing a dredger according to a construction path planned by a system; the system jointly controls dredging operation equipment such as a steering engine, a propeller, a rake arm winch, an active rake head, a wave compensator, a high-pressure flushing pump and an underwater / cabin mud pump to achieve dredging and driving integrated dredging and cabin loading operation, and in the dredging and cabin loading process, the controlled equipment is always kept to stably operate at a set target parameter value. Therefore, efficient automatic dredging operation of the trailing suction hopper dredger is achieved. According to the method, the target parameters of the dredging and loading operation are set, the controlled equipment is always kept to stably operate at the set target parameter values in the dredging and loading process, and efficient automatic dredging operation of the trailing suction hopper dredger is achieved.

The invention relates to an automatic dredging control method for economic yield of a trailing suction dredger, which comprises the following steps of: under a dredging loading working condition, acquiring the ratio of concentration and flow velocity to oil consumption of a loading pipeline according to historical data of concentration and flow velocity and oil consumption of the loading pipeline in construction; the concentration and flow rate target values of the loading pipeline with the most economic benefits under the working condition are determined in a mode of taking the maximum ratio, and the ship navigational speed, the rake head angle, the rake head cutting depth, the wave compensator pressure, the high-pressure flushing pressure and the dredge pump rotating speed are automatically controlled according to the target values; and meanwhile, the steering engine and the propeller are jointly controlled to realize automatic dredging and loading operation of the dredger according to a planned path, so that the dredging yield is stabilized near the economic yield, and the efficient automatic dredging and loading operation of the trailing suction dredger with the best economic benefit is realized. According to the method, it can be guaranteed that the optimal ratio of economic output to cost input can be obtained in automatic dredging and loading operation conducted under the economic output, and therefore economic benefits are greatly improved.

The invention discloses a construction method for curing sludge while blowing sludge, which comprises the following steps of: filling sludge with two layers of film bags to form a fence for blocking sludge on the outer surface layer, and pumping floating water on the upper layer by using a sludge pump; sludge solidification is directly carried out on the reinforced area in an in-situ solidification mode, the hydraulic reclamation area is propelled from one side of the levee, and the next construction working face is fished out; curing in the cured area for 7 days, and moving the sludge curing equipment to the cured area after the strength is reached; a film bag is arranged at the solidification boundary to flush and fill the flow-state solidified soil, and sludge solidification equipment is adopted for assisting sinking to the bottom elevation + 0.22 m; carrying out in-situ solidification on the dredger-filled sludge soil in the rest area; after the in-situ curing area reaches the strength, sludge ex-situ curing construction is conducted in a layered mode, and the curing thickness of each layer is 0.8 m; and the flow-state solidified soil is constructed layer by layer in sequence to + 6.20 m. The construction process of in-situ curing and heterotopic curing is adopted, an effective construction channel and an effective construction platform are formed, and a guarantee is provided for the on-site production progress.

The invention discloses a hydraulic reclamation rapid land formation construction method, and belongs to the technical field of hydraulic reclamation. A hydraulic reclamation rapid land formation construction method comprises the following steps that S1, the pipeline connecting frequency is reduced, and pipeline connection is optimized; s2, upheaval pipe heads control the hydraulic reclamation elevation; s3, a proper sandy soil material is selected to dynamically blow-fill the blow-filling pug so as to accelerate consolidation; s4, a smooth drainage channel is constructed, and mud-water separation is accelerated; s5, the top of the hydraulic reclamation pug is dynamically leveled; under the condition that the elevation of the cofferdam is insufficient, the land which is nearly one meter higher than the elevation of the cofferdam can be dredger-filled, the dredger-filling construction progress can be improved conveniently, and the dredger-filling construction efficiency is guaranteed.

The application discloses a kind of mobile underwater layered hydraulic fill construction indoor simulation test method, comprising: step (1) by input module design key test parameters;Step (2) by input module setting water depth, speed and wave conditions;Step (3) by management module mixes uniform mud;Step (4) by management module starts first layer mobile hydraulic fill;Step (5) by management module completes first layer mobile hydraulic fill;Step (6) by management module repeats step (4)-(5);Step (7) by measuring system measures hydraulic fill test characteristic parameter;Step (8) clears up water tank test area silt. Various key construction parameters are adjusted, and multi-layer repeated mobile construction simulation technology is realized, which provides an effective means for in-depth study of high-precision layered hydraulic fill technology, improvement of construction efficiency and management quality.

The invention discloses a water pumping and sand discharging pipeline system for a sand hopper and a construction technology of the water pumping and sand discharging pipeline system and belongs to the technical field of pipeline systems. A water pumping and sand discharging pipeline system for a sand hopper comprises a sand hopper body fixedly arranged on a ship deck through a fixing rod, and further comprises a pumping and sand discharging part, the pumping and sand discharging part comprises a first deck pump and a second deck pump which are arranged on the ship deck, the first deck pump is connected with a first discharging pipe, and the second deck pump is connected with a second discharging pipe; the pumping water pumping part comprises an underwater pump and a submersible pump which are arranged in the ship bridge frame; and a pumping and draining pipeline assembly. By refitting an existing cutter suction dredger and integrating the pumping and draining pipeline assembly and the cross-shaped connecting pipeline, flexible switching of the first deck pump, the second deck pump and the underwater pump among three modes of double-pump parallel connection, double-pump series connection and three-pump series connection is achieved, the operation production efficiency is improved, the production cost is reduced, and the service life of the cutter suction dredger is prolonged. And the device is suitable for an environment-friendly construction scene of short-row-pitch large-yield or long-row-pitch accurate conveying.

We propose a ground material using crushed clay tiles that can reduce turbidity when used underwater, and a method for reclamating seabeds using this ground material. [Solution] This is a ground material made by mixing crushed clay tiles and sand. The fine-grained content of the crushed clay tiles, including silt and clay, is 20% or less, the maximum particle size is 30 mm or less, and the 50% particle size is 10 mm or less. The maximum particle size of the sand is 2.0 mm, and the mixing ratio of sand to dry weight is in the range of 20% to 60%. When filling the bottom of a body of water with this ground material, it is moistened by soaking it in water before being placed in the water.

The present application relates to a kind of ecological island building fill unit, fill unit middle is provided with through hole, fill unit includes shell surface layer, middle structural layer and internal filling layer;Shell surface layer is made of neutral material, to ensure that the sea bottom water quality and related environmental indicators where fill unit is after sinking to bottom are not affected;Structural layer uses high-performance corrosion-resistant material, for bearing the water head pressure after fill unit sinking to bottom, unit stacking transmission pressure and mutual collision force, the whole outside of structural layer is covered by shell surface layer, and internal full-closed cavity is formed;Filling layer uses the full-closed cavity surrounded by structural layer, and fills crushed construction waste.The present application has the advantages of simple structure, large specific weight, easy production and transportation, etc.

This invention relates to the field of engineering foundation construction, specifically disclosing a method for removing fine particles from dredged sandy soil foundations. The method includes a pipeline, an upper rod, a suction pipe, and a cone. The upper rod contains a high-pressure water pipe, a high-pressure air pipe, and a suction pipe, all connected to the pipeline. The suction pipe, from the outside in, consists of an outer shell, a filter screen, and a suction chamber. The outer shell has several suction holes and several high-pressure air jet holes, connected to the high-pressure air pipe, and the suction chamber is connected to the suction pipe. The cone's tip has a high-pressure water jet hole connected to the high-pressure water pipe. Several vibrating rods are fixedly installed within the upper rod and suction pipe. This invention's fine particle removal equipment penetrates deep into the soil layer and removes fine particles through suction and filtration. It has a simple structure, is easy to implement, has low construction costs, and is convenient to operate. It can effectively remove fine particles from dredged sandy soil foundations, greatly reducing the difficulty of dredged sandy soil foundation treatment construction.

The present invention relates to a construction method for a multi-stage prefabricated ecological drainage system in a reclamation area, comprising the following steps: fabricating a base and annular precast blocks, and installing pre-embedded threaded sleeves and lifting rings within the base and annular precast blocks; installing the base and drainage pipes at a lower elevation in the reclamation area, and backfilling and compacting the soil; stacking the annular precast blocks layer by layer on the base and fixing them with connecting bolts, and wrapping the annular precast blocks with geotextile; selecting appropriate-sized primary, secondary, and tertiary filter baskets to assemble a multi-stage filter basket filtration system, and suspending the multi-stage filter baskets on the top annular precast block, and fitting vertical filter cylinders around the annular precast blocks; conveying slurry to the reclamation area to begin reclamation operations; promptly cleaning the silt and sand within the multi-stage filter baskets and adding annular precast blocks during reclamation; after reclamation is completed, lifting the annular precast blocks and base layer by layer from the sedimentary soil layer; and backfilling the pits left by the base and annular precast blocks in the sedimentary soil layer by layer with backfill soil.

Dewatering systems and methods for use in response to emergencies and disasters. The system includes an autonomous vehicle including or transporting a dewatering device. In response to information about a water-related disaster at a specific location, the system will instruct the vehicle to travel to the location, enter a building, and initiate a series of dewatering cycles in the interior space of the building. The vehicle can navigate from room to room and determine whether fluid content levels exceed a specified threshold. In response, the vehicle can direct its dewatering operation to these specific zones.

The present invention discloses a simple and rapid near-natural coastal wetland ecological restoration method, belonging to the technical field of environmental protection, including: Step 1, determining the area of the coastal wetland to be restored; Step 2, viewing the current and historical remote sensing satellite images of the area of the coastal wetland to be restored, and determining the locations of the tidally developed tidal creeks within the area of the coastal wetland to be restored; Step 3, determining the high tide line of neap tide and the low tide line of neap tide in the area of the coastal wetland to be restored; Step 4, reconstructing the tidal creeks at the locations of the tidally developed tidal creeks within the area of the coastal wetland to be restored, and simultaneously constructing a tidal inlet shallow beach at the intersection of the reconstructed tidal creeks between the high tide line of neap tide and the low tide line of neap tide; Step 5, post-maintenance. The near-natural coastal wetland ecological restoration method of the present invention makes the restoration design of coastal wetlands simpler, more convenient, and faster, can greatly reduce the interference degree of coastal wetland restoration on the surrounding ecological environment during the engineering construction stage, and improve the diversification of the coastal wetland restoration effect.

The invention belongs to the technical field of water conservancy construction equipment, and particularly discloses a green and environment-friendly hydraulic reclamation intelligent construction relay pump station and a device thereof, the intelligent construction relay pump station comprises a pump body used for conveying slurry, and the pump body is connected with a feeding pipe and a discharging pipe. Rock blocks in slurry are intercepted through the multiple stages of baffle plates, the situation that a pump body pipeline is blocked by the rock blocks and components such as a pump body impeller and a pump shell are abraded is avoided, equipment faults and maintenance cost are reduced, and the continuity of hydraulic reclamation operation is guaranteed; by combining the design of an anti-leakage pipeline, slurry recovery and the like, zero-pollution transfer of the slurry, carbon reduction, efficiency improvement and strict control of secondary pollution are realized; meanwhile, block stone interception and passing modes are adjusted in a self-adaptive mode according to the slurry flow speed, the slurry conveying efficiency is guaranteed while the block stone collecting efficiency is improved, a remote control system is additionally arranged, the system is matched with channel dredging, sea reclamation, lake and reservoir desilting and other scenes, the slurry conveying distance is prolonged, and the dual requirements of environmental protection and intelligent construction are met.

The present invention discloses a silt-promoting and land-reclaiming system for sandy coasts and islands, which includes bell-shaped wave-dissipating fish reefs arranged successively from the near-shore waters of the islands to the sandy beach above the highest high-tide line, releasing spat of white butterfly shells and turban shells, a submarine sand-trapping and silt-promoting dike, an inclined one-way sand barrier, and a triangular sand barrier. The bell-shaped wave-dissipating fish reefs, the submarine sand-trapping and silt-promoting dike, the inclined one-way sand barrier, and the triangular sand barrier are respectively parallel to the coastline and are arranged in multiple rows and in bands, and the distance between each banded area is 10-30 m. The silt-promoting and land-reclaiming system for sandy coasts and islands provided by the present invention is arranged on the seabed and the land surface. Through the combination of multiple measures, it promotes the onshore transport of water and sand and wind-blown sand as a whole, and inhibits the seaward retreat process of sea sand, effectively increasing the surface elevation of the seabed and the sandy beach, and playing the role of sustainable silt-promoting land reclamation and improving the near-shore marine ecological environment.

The present invention provides an anti-seepage cofferdam and a construction method thereof, comprising high-pressure rotary jet grouting pile foundations located on the waterfront and waterfront sides and a steel pipe pile foundation located in between; a crushed stone cushion layer and a core stone are sequentially arranged above the high-pressure rotary jet grouting pile foundations; natural soil is provided between the steel pipe piles of the steel pipe pile foundations; a crushed stone cushion layer and backfilled medium-coarse sand are sequentially arranged above the natural soil; two stone cushion layers and a mortar block stone face protection are sequentially arranged above the core stone on the waterfront side, and a bottom protection block stone is also arranged at the front end of the waterfront side; two stone cushion layers, a mixed filter layer, a geotextile filter layer, and bagged sand are sequentially arranged above the core stone on the waterfront side; and a concrete wave retaining wall is further arranged above the two stone cushion layers above the core stone on the waterfront side and near the steel pipe pile foundation. The present invention can enhance the stability of the offshore anti-seepage cofferdam, prevent seawater backflow and infiltration, and facilitate construction.

The invention discloses a dam hydraulic reclamation construction method. The method comprises the steps that a plurality of monitoring points are arranged in a hydraulic reclamation area; performing hydraulic reclamation construction on the hydraulic reclamation area according to the set hydraulic reclamation speed in the previous monitoring period; elevation values are detected at the starting moment and the ending moment of the previous monitoring period at each monitoring point; calculating the settlement amount of each monitoring point in the previous monitoring period; calculating the settling volume of the hydraulic reclamation area in the previous monitoring period; when the settling volume of the hydraulic reclamation area in the previous monitoring period is larger than or equal to a first settling volume threshold value, the next hydraulic reclamation speed is reduced to 70-80% of the previous hydraulic reclamation speed; when the settling volume of the hydraulic reclamation area in the previous monitoring period is smaller than or equal to a second settling volume threshold value, the next hydraulic reclamation speed is increased by 1.1-1.3 times of the previous hydraulic reclamation speed; and repeating the execution. The hydraulic reclamation speed can be adjusted according to the sedimentation condition of the dam hydraulic reclamation area, the hydraulic reclamation effect is improved, and the dam construction quality is improved.

The invention discloses a bow blowing device and a production process thereof, and relates to the technical field of ship bow blowing devices. According to the bow blowing device and the production process thereof, the bow blowing device comprises a seat frame, the bottom of the seat frame is fixedly connected with an outfitting platform, one side of the seat frame is provided with a ventilation device, the bottom of the seat frame is provided with a spherical joint, the interior of the seat frame is fixedly connected with a bow spraying straight pipe, the interior of the seat frame is fixedly connected with a bow spraying bent pipe, and the surface of the bow spraying bent pipe is fixedly connected with a bow spraying nozzle. A bow blowing straight pipe is fixedly connected into the seat frame, one end of the bow blowing straight pipe is fixedly connected with a bow blowing bent pipe, a connector lifting chain is arranged on the seat frame, idler wheels are arranged on the top of the seat frame, a grease pipeline is arranged in the seat frame, and a hydraulic pipeline is arranged in the seat frame. The key components such as the seat, the fitting-out platform and the spherical joint are all connected through high-strength welding and flanges, the maintenance convenience is optimized through the integrated design of the ventilation device, the grease pipeline and the hydraulic pipeline, and the downtime is shortened.

This invention discloses a double bow spraying device for a trailing suction hopper dredger, belonging to the field of dredging technology. The double bow spraying device for a trailing suction hopper dredger includes a bow, on which an mounting plate is fixedly installed. The mounting plate is equipped with two sets of angle adjustment mechanisms, each connected to a spraying mechanism. Each angle adjustment mechanism includes a horizontal adjustment component for driving the spraying mechanism to rotate horizontally and a vertical adjustment component for driving the spraying mechanism to rotate vertically. The horizontal and vertical adjustment components are connected. An automatic pressurization component is provided on the spraying mechanism. This invention can automatically adjust the bow spraying range of the dredger, increasing the operational spraying range, reducing the workload of the crew, and greatly improving the quality and efficiency of bow spraying and dumping of dredged material by the trailing suction hopper dredger.

The utility model relates to the technical field of water conservancy projects, and discloses a transportation vehicle-trapping-prevention device in the water conservancy project sea filling and road paving process, which comprises a supporting plate, and is paved on two sides of a muddy road section through the supporting plate, and ground gripping teeth on the outer wall of the supporting plate can be used for improving the ground gripping property of a road surface and tires of a transportation vehicle, so that an anti-skid effect is achieved; inserting rods are fixed in inserting holes in the upper portions of the bearing plates through connecting and fixing plates, so that the two bearing plates are fixed, stability after installation is improved, and tires are prevented from slipping and being trapped when a vehicle passes by, first connecting blocks and second connecting blocks are fixedly installed on the outer walls of the bearing plates, the second folding rods are extended through first folding rods and middle shafts, and therefore the stability of the vehicle is improved. When the supporting device is installed on the ground, the supporting performance and stability of the supporting device and the road surface are improved, the contact area of the supporting device and the road surface is increased, the stress area is increased, sinking is avoided, and therefore the two sets of supporting plates can be stored conveniently.

The rapid solidification equipment comprises a main body box and a spiral conveyor, a discharging hopper is fixedly installed at the top of the spiral conveyor and communicates with the interior of the spiral conveyor, and a discharging opening of the discharging hopper is located in the top of the main body box; a communicating pipe is fixedly installed between the bottom of the main body box and the bottom of the spiral conveyor, the two ends of the communicating pipe communicate with the interior of the main body box and the interior of the spiral conveyor correspondingly, a separation net is fixedly installed at the joint of the main body box and the communicating pipe, and a detection assembly is arranged in the discharging hopper and comprises an impeller; the back of the spiral conveyor is provided with a throwing assembly used for throwing a curing agent, and rotation of the impeller is controlled through the discharging state of dredger fill in the discharging hopper so as to control the curing agent throwing mode of the throwing assembly. The equipment can automatically control the feeding mode of the curing agent according to the salt content condition of the dredger fill, so that the curing quality of the dredger fill is improved.

A mobile underwater layered filling construction indoor simulation intelligent test system includes a control system and a measurement system. By integrating multiple specialized subsystems, it can fully simulate underwater mobile filling construction methods in open waters. This mobile underwater layered filling construction indoor simulation intelligent test system can adjust the construction environment's impacts, such as wind, waves, currents, and water depth, as well as key construction parameters such as the filling device's movement speed, distance from the bottom, slurry flow rate, slurry concentration, and sediment type. This system implements multi-layer, repetitive mobile construction simulation technology, providing an effective means for in-depth research on high-precision layered filling technology and improving construction efficiency and management quality.

The present invention discloses a self-repairing high-strength and high-durability geotextile filling bag and a preparation method thereof, comprising a filling bag body, a sewing line and a filling cuff; the filling bag body is made of a self-repairing high-strength and high-durability geotextile sewn by sewing line; the self-repairing high-strength and high-durability geotextile comprises a first geotextile or a second geotextile, the first geotextile is used for filling when the soil body is fine-grained soil and needs to be blown on site, and the second geotextile is used for filling when the soil body is coarse sand and needs to be blown on site or filled with dry sand in the factory; the fine Granular soil refers to soil with a particle size of ≤0.075mm, and coarse sand refers to soil with a particle size of 0.075-2mm. The first geotextile consists of a filtration functional layer and a high-strength wear-resistant layer arranged from bottom to top. After sewing them into a filling bag, the filtration functional layer is located on the inner side of the filling bag. The second geotextile consists of a warp-knitted high-strength geotextile, a spacer yarn layer and a warp-knitted high-strength geotextile arranged from bottom to top. After sewing them into a filling bag, the warp-knitted high-strength geotextile is located on the inner side of the filling bag.

This invention provides a landfill material that can be used even when there is a time lag between mixing and dispensing it into water. [Solution] The method for manufacturing landfill material involves mixing soil, a stabilizer, and a setting retarder to produce landfill material in a non-slurry state. The method includes the step of adding a separation inhibitor to the mixed material obtained by the step of mixing soil, a stabilizer, and a setting retarder, in order to prevent the separation of the stabilizer and the soil, and the amount of setting retarder mixed is controlled based on the water content of the soil.

The invention provides a desilting method for promoting ecological restoration of a subtropical freshwater lake, and the key innovative technology is as follows: dynamically dividing operation units according to the narrowest length of a water area, and determining the operation width by adopting a sectional rule; the desilting depth is determined according to the depth of the polluted bottom mud layer; the method comprises the following steps: collecting unpolluted bottom mud, measuring background values of total nitrogen, total phosphorus, organic carbon, sulfide and heavy metal indexes, analyzing the chemical substance content and dry volume weight of a desilting layer and a normal layer, and calculating an overproof coefficient and a compensation coefficient; the desilting width is deduced through a formula, the widths of a desilting belt and a retaining belt are determined, and then desilting is carried The sediment in the reserved zone is blown and filled to the desilting zone; and finally. By planting submerged plants and putting microbial agents, bottom mud is effectively fixed, and reconstruction of an ecological system is promoted. According to the method, the operation units are scientifically divided, pollution evaluation indexes are quantified, the dredging range is accurately controlled, effective removal of polluted bottom mud and rapid recovery of an ecological system are both considered, and the method is particularly suitable for repairing the subtropical freshwater lake.