1116 results about "Silt" patented technology

The invention discloses a high-pressure jet grouting pile construction optimization control method and system, and belongs to the technical field of pile foundation construction. According to the method, the pile body strength is predicted based on the XGBoost regression model, the HSIO hybrid swarm intelligent optimization algorithm is combined with the artificial bee colony algorithm and the seathead optimization algorithm, the construction parameter combination is dynamically adjusted, and optimal matching of the target strength and the real-time construction state is achieved. The method solves the problems of parameter setting deviation and non-uniform pile forming quality caused by the fact that traditional construction depends on artificial experience, is particularly suitable for high-precision construction requirements under complex geological conditions (such as karst areas and deep and thick sludge layers), remarkably improves the pile body strength stability, construction efficiency and quality controllability, and reduces the construction cost. And meanwhile, material waste and personal error risks are reduced.

The invention provides a sludge amount measurement method and system based on a reservoir model, and relates to the technical field of hydrographic survey, and the method comprises the steps: obtaining the operation data, basin hydrological data and reservoir topographic data of a target reservoir; based on the operation data, the watershed hydrological data and the reservoir topographic data, establishing a water balance equation and a sediment balance equation; establishing a reservoir model through a water balance equation and a sediment balance equation, and calculating a first predicted distribution quantity of sediment deposition in combination with a dispatching record and a sediment transportation quantity of a target reservoir; calculating a second predicted distribution quantity of the target reservoir at the prediction moment based on the historical sludge distribution quantity of the target reservoir; and if it is determined that the first predicted distribution quantity and the second predicted distribution quantity are within the preset range, determining that the sludge quantity of the target reservoir at the prediction moment is the first predicted distribution quantity. By introducing a coupling mechanism among multiple factors related to reservoir sludge amount prediction, the accuracy of reservoir sludge amount prediction is improved.

The utility model discloses a sand cleaning assembly, which relates to the technical field of sand cleaning equipment and comprises a sand discharging pipe and an adjusting device. The sand discharging pipe comprises an outer pipe and an inner pipe penetrating through the outer pipe, a sand discharging channel is formed between the inner side of the outer pipe and the outer side of the inner pipe, and one end of the inner pipe is externally connected with high-pressure water flow; the adjusting device is used for extending the sand discharging pipe into the tank body or pulling the sand discharging pipe out of the tank body; when the sand removal tank is used, sediments in the tank body are pumped out through the sand removal channel between the outer pipe and the inner pipe, and in order to improve the sand removal efficiency of the tank body, high-pressure water flow is sprayed into the tank body through the inner pipe, so that sand and sludge deposited in the tank body are impacted, the sediments adhered or accumulated in the tank body are dispersed, and the sediments can be conveniently discharged through the sand removal pipe; and the adjusting device can adjust the position of the end part of the sand discharging pipe in the tank body, so that the sand cleaning area is enlarged, and the sand cleaning efficiency and the sand cleaning effect are improved.

The invention discloses a ten-thousand-square-meter muddy deep foundation pit supporting structure deformation prediction method which comprises the following steps: establishing a soil-supporting interaction rheological model, simulating stress relaxation and creep effects of muddy soil in combination with a Burgers rheological model, and realizing dynamic evolution prediction of a supporting structure deformation field and an internal force field. According to the method, the particle filter algorithm is adopted to carry out denoising processing on real-time monitoring data, model parameters are updated through the Bayesian method, and the prediction precision is improved. Meanwhile, nonlinear mapping of the deformation rate and the internal force increment is established by using a random forest algorithm, and instability risk probability distribution is generated. According to the method, multi-stage collapse early warning thresholds are set, monitoring data and prediction results are fused by adopting a weighted average method, and abnormal points of a high-risk area are identified. For a high-risk area, a genetic algorithm is applied to optimize the rigidity and prestress distribution of a supporting system, effective control over deformation and internal force of a supporting structure is achieved by dynamically adjusting construction parameters, and construction safety of the deep foundation pit is ensured.

The invention provides an immersed tube tunnel underwater slope protection silting prevention system and a construction method thereof.The immersed tube tunnel underwater slope protection silting prevention system comprises a foundation trench, a side slope is arranged in the foundation trench, the immersed tube tunnel underwater slope protection silting prevention system comprises a plurality of blocking units, each blocking unit comprises a silting prevention plate and a plurality of limiting pipes, and the limiting pipes are arranged on the side slope. The silt prevention plate is laid on the side slope, a plurality of accumulation channels penetrating in the vertical direction are formed in the silt prevention plate, and the accumulation channels are used for collecting silt; the multiple limiting pipes are inserted into the side slope in the vertical direction and connected with the silt prevention plate. According to the immersed tube tunnel underwater slope protection siltation prevention system, silt in water flow is intercepted through the accumulation channel on the siltation prevention plate, when the silt falls onto the siltation prevention plate, the silt can be deposited in the accumulation channel, the deposited silt and a soil body embedded in the accumulation channel are fused into a whole, the siltation prevention plate can be reversely fixed, the stability of a side slope is protected, and the service life of the side slope is prolonged. The sludge utilization rate is improved.

The invention relates to an integrated experimental system and method for simulating sand production-sand prevention of an argillaceous silt hydrate reservoir, and the system comprises a reservoir sand production / mechanical property evaluation simulation device which comprises a heat exchange chamber and a high-pressure reaction kettle arranged in the heat exchange chamber, and the high-pressure reaction kettle is internally provided with a core holder; the gas displacement and control device is connected with the reservoir sand production / mechanical property evaluation simulation device; the confining pressure loading device is connected with the high-permeability confining pressure layer in the reservoir sand production / mechanical property evaluation simulation device and is used for simulating the confining pressure environment outside the reservoir core sample; the liquid displacement and control device is connected with the high-pressure reaction kettle and is used for providing liquid displacement conditions for the reservoir core sample; the gas-liquid-solid separation device is connected with the high-pressure reaction kettle and is used for separating a gas-liquid-solid mixture; the visual sand prevention simulation device for the screen pipe unit comprises a visual acrylic pipe, and the data acquisition device is used for acquiring and processing data of the sand prevention experiment of the visual acrylic pipe.

The invention provides a composite tension sand blocking and silt reducing facility and method.The facility is composed of one or more units, each unit comprises a floating body, a composite tension curtain and an anchor point located at the bottom of a water body, one end of the composite tension curtain is connected to the floating body, and the other end of the composite tension curtain is connected to the anchor point; the composite tension curtain forms a sand blocking surface in the water between the bottom of the water body and the floating body by virtue of the buoyancy of the floating body, and the floating body is positioned on the water surface or suspended in the water; the composite tension curtain is formed by sewing two layers of geotechnical cloth together, a plurality of steel cables are inserted between the two layers of geotechnical cloth, a composite tension structure is formed to serve as a sand blocking and silt reducing curtain face, and main water flow force and wave force are borne by the steel cables. The flexible sand blocking curtain structure facility is economical, convenient to construct, suitable for large flow velocity and wave conditions and capable of blocking sand and reducing silt.

The invention discloses a comprehensive detection processing and analysis method and system for a deep foundation trench of an immersed tunnel, and relates to the technical field of data processing, and the method comprises the steps: firstly carrying out the acoustic calibration of a multi-beam array in a foundation trench region, and compensating a beam incident angle and echo delay, so as to eliminate systematic sounding errors; then macroscopically scanning the foundation trench based on the corrected sounding equipment to generate a high-resolution three-dimensional point cloud, identifying abnormal elevation change in real time and dynamically adjusting the dredging depth; then multi-frequency acoustic detection is carried out on the silt sediment, a float sludge thickness cloud picture is drawn to evaluate a loose structure, and targeted compensation is carried out; finally, the topographic form and the sediment structure change are jointly used for construction early warning, a closed-loop system from precision calibration to anomaly detection to physical property diagnosis and risk early warning is formed, the precision and integrity of foundation trench depth measurement and sludge monitoring are remarkably improved, potential risks can be found and corrected in time in construction, and the construction efficiency is improved. And the construction safety and efficiency of the immersed tunnel deep foundation trench are guaranteed.

The utility model discloses a desilting device for maintenance and cleaning of wetland ecological environment, which comprises a support, a baffle arranged above the support and a processing assembly arranged outside the baffle, when sludge needs to be cleaned, a conveying belt is placed at a cleaning position, a motor is started, a rotating rod fixedly mounted at the output end of the motor starts to rotate, and the conveying belt and the processing assembly are driven to rotate. Under the support of a baffle, a rotating rod enables a conveying belt arranged on the outer wall of the rotating rod in a sleeving mode to start to rotate, a conveying plate fixedly installed on the outer wall of the conveying belt rotates along with the conveying belt, the rotating conveying plate conveys sludge to achieve the dredging effect, and when the conveying plate is used for dredging, the sludge is prone to being attached to the outer wall of the conveying plate and needs to be cleaned; when a scraper sleeving the outer wall of the conveying plate moves towards the inclined plate, a sliding column fixedly mounted on the outer wall of the scraper makes contact with and extrudes the outer wall of the inclined plate, the sliding column drives the scraper to slide on the outer wall of the conveying plate, a second magnetic block fixedly mounted on the inner wall of the scraper slides in a sliding groove formed in the outer wall of the conveying plate, and the scraper cleans sludge attached to the outer wall of the conveying plate.

The invention discloses transparent soil with high transparency and high similarity with natural soil and a preparation method of the transparent soil. The transparent soil comprises transparent particles, transparent pore liquid and an additive. The refractive indexes of the transparent particles and the transparent pore liquid are consistent, and the contact infiltration characteristic of the particle surfaces and the liquid is improved through the surfactant, so that the transparent soil with higher transparency, such as sandy soil, clay and floury soil, is obtained. Hydrophilic fumed silica is matched with polar pore liquid or hydrophobic fumed silica is matched with non-polar pore liquid to prepare high-strength transparent clay or silt with mechanical properties highly similar to those of natural clay or silt. According to the invention, the clay or silt consolidation time can be greatly shortened. The transparent soil with high transparency and high similarity with natural soil can improve the geometric dimension of a transparent soil model, reduce the dimension difference between a model test and a real engineering problem, and provide a more excellent method for researching various geotechnical geological engineering problems.

The invention relates to the technical field of sediment sampling, and discloses a riverway water environment treatment lifting device which comprises a fixing frame, sliding rails are arranged in the top end and the bottom end of the fixing frame, sampling assemblies used for collecting sediment are arranged in the sliding rails, each sampling assembly comprises a bottom supporting column, the bottom supporting columns are slidably connected with the sliding rails, and the bottom supporting columns are connected with the sliding rails. The river channel water environment treatment lifting device comprises a bottom supporting column, a supporting rod is fixed to the top of the bottom supporting column, a sampling barrel is fixed to the top of the supporting rod, and connecting blocks are fixed to the surfaces of the two sides of the sampling barrel. Water flow is limited through the appearance of the conical pipe, so that the water body shunted by the filter screen is converged again, and a certain flow speed is maintained to carry silt into the sampling barrel, so that the silt sampling accuracy is improved, and the water environment treatment efficiency is effectively improved.

The invention relates to the technical field of pipeline detection, and discloses a full-process intelligent detection method for composite material pipeline forming and application, and the method comprises the following steps: S1, early-stage preparation: collecting a pipeline drawing, a historical detection report, geological data and operation data, then debugging equipment, evaluating environmental risks, and carrying out early-stage preparation; obtaining operation approval and deploying safety protection measures; s2, pipeline dredging is conducted, specifically, sludge and sundries in the pipeline are removed through environment-friendly dredging equipment, and the sludge is temporarily stored; and S3, robot deployment: calibrating a robot sensor, planning an advancing path, setting a communication and positioning system, and putting the dredging detection robot into the pipeline through the access hole. The desilting detection robot is deployed, and various sensors carried by the desilting detection robot are used for collecting data in real time, so that the problems of high safety risk and low efficiency caused by the fact that manual well descending observation is needed in most traditional pipeline detection, the internal condition of a pipeline is complicated, and the detection speed of workers is limited are solved.

The invention belongs to the technical field of vertical jacking of underwater shield tunnels, and particularly relates to a submarine hard rock shield tunnel nuclear power cold source drainage head construction method which comprises the following steps: reinforcing a sludge layer between seawater and a rock stratum; a pile casing is installed in the reinforcement treatment area of the sludge layer; bed rock in the pile casing is removed; the pile casing is backfilled with a sealing material; performing protection treatment on the outer side area of the pile casing; and shield tunneling construction is conducted in the rock stratum, a tunnel is formed, and vertical jacking construction is conducted on the sealing material in the pile casing through the tunnel to form a drainage head. According to the method, the key technology related to subsea tunnel shield internal drainage head construction under the hard rock condition can be achieved; the problems of hard rock treatment and backfilling compaction at the vertical jacking part are solved, the treatment area is reduced to the maximum extent, the cost is saved, the construction progress is accelerated, the construction safety is guaranteed, normal tunneling of slurry balance shield tunneling is guaranteed, and meanwhile the requirement of vertical jacking for the stratum is met.

The invention relates to a spiral conveying type river channel desilting device and a self-adaptive sludge collecting method, and relates to the technical field of river channel desilting, and the spiral conveying type river channel desilting device comprises a spiral conveyor assembly, a collecting opening assembly, a filter screen assembly and a discharging assembly. The device has the effect of avoiding blockage during dredging, the spiral conveyor assembly comprises a spiral shaft, a first driving motor and other assemblies, the first driving motor can drive the spiral shaft to rotate to move and transport sludge, the collecting opening assembly comprises a collecting opening body, a spring adjusting mechanism and other assemblies, and the spring adjusting mechanism is connected to the inner bottom end of the collecting opening body. The spring adjusting mechanism can automatically adjust the opening angle of the collecting opening body according to the thickness of river bottom sludge, and the riverbed is prevented from being damaged due to excessive digging; the filter screen assembly can filter the sludge and isolate solid impurities in the sludge, and the rear end of the collecting opening body is connected with the discharging assembly, so that the solid impurities can be discharged in time, and the sludge is prevented from being blocked and the dredging effect is prevented from being influenced.

The invention provides an irrigation area sediment deposition prediction method and system, computer equipment and a storage medium, and belongs to the field of water conservancy project intellectualization, and the method comprises the steps: collecting historical hydrological data, real-time monitoring data and remote sensing observation data of a to-be-predicted irrigation area; the method comprises the following steps: resampling historical hydrological data and real-time monitoring data, carrying out forward filling completion on missing data, filling remote sensing observation data into a unified time axis, and filling missing spatial features based on spatial feature values of an adjacent time reference to obtain multi-source data with time-space alignment; extracting features of the multi-source data to obtain four features; and combining the four features and calculating correlation weights among the features so as to determine the sediment flow, the sediment concentration and the sediment flow velocity of the to-be-predicted irrigation area. According to the method, aiming at the defect of non-uniform spatial and temporal distribution among multi-source data sources, spatial and temporal alignment is realized through time re-adoption and spatial feature completion, the input information can accurately reflect the sediment transportation process of an irrigation area, and the prediction accuracy is improved.

The invention relates to the technical field of water environment detection, in particular to a sampling device based on arid region water environment detection, which comprises a sampler, a protection unit is mounted on the lower side of the sampler, and a side suction unit is mounted on the protection unit. A plurality of elastic bottom-touching-preventing rods are adopted to support the sampling barrel, the water inlet pipe is prevented from being too close to a river bottom sediment layer, meanwhile, the water inlet pipe arranged laterally is adopted to extract a water sample in a side suction mode, disturbance of water flow to river bottom sediment is reduced, and the lower portion of the water inlet pipe is protected through an impurity blocking set; by means of the multi-stage device for preventing silt from being synchronously extracted, the normal sampling flow speed is maintained, meanwhile, it is avoided that too many impurities such as alkaline substances exist in a sampled water sample, and detection of the water body is affected, and the water body sampling detection accuracy is effectively improved. The inner cavity of the sampling barrel is divided into the two independent sampling cavities through the isolation plate, and the two piston extracting pieces are matched for extracting in sequence, so that independent collection of two water bodies with different depths can be completed through single-time lowering.

The invention discloses a coal mining working face separation layer mud-carrying sand water inrush position forecasting method. The method comprises the following steps that the primary fracture position and the periodic fracture position of a lower water-resisting layer serve as the separation layer water inrush position of a mining working face; calculating the shearing force of the water flow to particles of the material source layer based on the flow velocity of the separation layer water reaching the material source layer, and judging whether the separation layer water inrush position carries silt or not, so as to determine the working face separation layer silt-carrying water inrush position; and calculating a risk index of the working face carrying mud-sand water inrush, and dividing the risk grade of the working face separation layer carrying mud-sand water inrush position based on the risk index of the working face carrying mud-sand water inrush to obtain a risk grade division result. According to the method, accurate forecasting of the separation layer mud-carrying sand water inrush disaster of the coal mining working face is achieved.

The invention discloses a foundation construction method in house building construction, and relates to the technical field of building construction. The method comprises the following steps: step 1, geological investigation and site pretreatment; 2, a shallow soft soil layer is treated; 3, constructing a deep composite pile foundation; 4, laying a composite mattress layer; 5, integrating an intelligent monitoring system; and step 6, quality detection and acceptance. Compared with the prior art, the construction method is more economical and environmentally friendly, the utilization rate of the building residue soil is high, the lime consumption is reduced, carbon emission is reduced, and the material cost is saved; the anti-seismic performance is improved, the anti-seismic intensity of the structure is improved through the elastic concrete layer, and the seismic energy absorption rate is increased; the construction efficiency is improved, and the equipment dismounting time is reduced by the pile casing hole-forming process, so that the construction period is shortened; the adaptability is wider, and the method is suitable for various complex geologies such as collapsible loess, mucky soil and miscellaneous fill.

The invention discloses a method for cooperatively carrying out dredging and ecological protection in a near-shore sensitive area, belongs to the technical field of port and channel engineering desilting, and aims to solve the technical problem that construction efficiency and ecological environment protection are difficult to consider when dredging operation is carried out in the near-shore sensitive area. Comprising an operation system of at least one dredging sub-ship, a path is planned through underwater topographic survey, the sub-ship is fixed through a gauge pile system, a multi-joint hinged arm with a cover type cutter suction head is lowered to be attached to a mud bed, sludge is liquefied through a high-pressure water system, and slurry is conveyed through a sand pump set; the slurry concentration and the turbidity of a surrounding water area are respectively monitored through an inner turbidity sensor and an outer turbidity sensor, and closed-loop feedback control is formed to dynamically adjust the power of a sand pump, the pressure of high-pressure water and the speed of a hinged arm; and meanwhile, in the dredging process, an ecological base material containing a biological agent is sprayed to the bare seabed through an ecological base material spray head, and dredging and ecological restoration are synchronously carried out. The method is mainly used for dredging construction and ecological protection of near-shore sensitive water areas.

The invention discloses a preparation method of solid waste for filling a karst cave, and relates to the technical field of buildings. Comprising the following steps: pretreating solid waste to obtain first pretreated solid waste; sieving the first pretreated solid waste to obtain a second pretreated solid waste; mixing the second pretreated solid waste with a slurry additive to obtain karst cave filling slurry; wherein the solid waste comprises at least one of mud, excavation soil and sludge. The solid wastes such as the slurry, the excavation soil and the sludge have the characteristics of fine particles, easiness in stirring, good dispersity and no pipeline blockage, so that the pollution of materials such as low-grade concrete, neat cement paste and composite paste slurry to water and soil environments can be avoided, and the raw material cost required by pouring and backfilling construction can be saved; and the outward transportation cost of solid wastes such as surface soil and slurry and the cost for treating environmental pollution are saved.

The invention discloses a seabed sludge sampling device for marine geological survey, the seabed sludge sampling device comprises an extension arm, the bottom of the extension arm is provided with a collection member, the collection member comprises: a connection frame installed at the bottom of the extension arm; and the sampling piece is installed on the connecting frame and used for sludge sampling treatment, and the sampling piece comprises a protective shell fixedly connected with the connecting frame. According to the seabed sludge sampling device for the marine geological survey, the extension arm, the connecting frame and the sampling piece are transferred to a sea land sludge accumulation position by an external submersible, the shell, the driving piece, the recovery piece, the multiple groups of extension pipes and the auger are driven by the hydraulic cylinder assembly to move towards the sludge accumulation end, and the multiple groups of extension pipes are inserted into sludge by a proper depth; the motor drives the multiple sets of augers to rotate through the belt wheel assembly, the two sets of driving shafts and the multiple sets of bevel gear assemblies, and the augers are rotated to guide sludge guided into the extension pipe into the recycling box through the extension pipe and the blocking piece.

The utility model discloses a silt deposition prevention pipeline for long-distance horizontal transportation, and relates to the field of long-distance horizontal pipeline transportation. The device comprises a horizontal pipeline, a connector, a stirrer and the like. The horizontal pipeline and the stirrer are connected through connectors, and the connectors are arranged on the left side and the right side of the stirrer to be connected with the horizontal pipeline to form a whole. Water flow flows into the stirrer through the horizontal pipe, the pipe diameter is enlarged, the water flow scours blades on the lower portion of the rotating paddle in the stirrer to drive the rotating paddle to work, other substances in the water flow are stirred, and sediment and the like are prevented from depositing.

This invention provides an in-situ stratified rapid sampling device and method for river and lake sediment pollution, relating to the field of river and lake sediment pollution monitoring technology. The device includes: a main control system, a main sampling system, a mounting frame, a depth sounding module, a working vessel hull, and a crane. The depth sounding module is installed below the stern of the working vessel hull. The main control system and the crane are both mounted on the working vessel hull. The main sampling system is connected to the crane and fixed within the mounting frame. The depth sounding module is used to detect and determine water depth and the thickness of floating mud, flowing mud, and silt. The main control system is used to control the sampling process of the main sampling system and to read the water depth, sediment thickness, and determine whether the main sampling system has completely inserted into the sediment in real time. The main sampling system is used to insert into the sediment to perform stratified sampling of the sediment pore solution. This invention solves the problems of low sampling rate, inability to perform stratified sampling, deviation between stratified sediment samples and actual conditions, low efficiency, and large errors in detection results in existing technologies.

The invention discloses a sediment collection and supply integrated device for offshore wind turbine pile foundation scour prevention, which is arranged around the periphery of an offshore wind turbine single pile foundation, relates to the technical field of offshore wind power engineering, and comprises an annular sand collection unit, a sand storage unit, a sand unloading unit and a sand supply guide unit which are communicated from top to bottom; the annular sand collecting unit guides sediment in ocean current to be deposited and collected, the sand storage unit receives and stores the collected sediment, and the sand unloading unit can seal a bottom outlet of the sand storage unit in an opening and closing mode; the sand supplementing guide unit directionally guides the discharged silt to the scouring pit; the mechanical triggering unit and the elastic resetting unit are used for opening and resetting the sand unloading unit. Sediment carried by ocean current is utilized, through pure mechanical passive operation, integrated self-circulation of collection, storage, triggering, release and supply of the sediment is achieved, external energy is not needed, the self-adaptive adjusting capacity is achieved, and the construction and operation and maintenance cost is remarkably reduced.

The invention discloses a method and device for determining the depth of a silt preparation pit of a canal project and electronic equipment, and relates to the field of river channel desilting engineering.The method comprises the steps that the topographic features and the river trend of a target canal project in each project river reach are obtained, inputting the topographic features and the river trend of each project river reach into a pre-established water-sediment coupling dynamic model, solving water-sediment element information in each time step length by the water-sediment coupling dynamic model, and outputting sediment deposition data of different project river reaches; obtaining river channel parameters of each project river reach, and calculating a river section sand content change condition based on the river channel parameters; and on the basis of the river section sand content change condition and the river section water flow of the project river reach, calculating the on-way section accumulated deposition thickness, and determining the depth of each silt preparation pit on the basis of the on-way section accumulated deposition thickness. The technical problems that in the prior art, a dredger needs to dredge from a channel starting point to a channel ending point, the oil consumption of the dredger is large, and the efficiency is low are solved.

The invention relates to the technical field of quartz sand cleaning, and discloses a device for realizing a scrubbing treatment process of quartz sand for fracturing, which comprises a separation barrel, an inclined bottom plate, a driving motor, a silt storage barrel, a screening frame, a rotating shaft and the like, a feeding port is formed in the top of the separation barrel, an inclined bottom plate is fixedly connected into the separation barrel, a driving motor is installed at the top of the separation barrel, a silt storage barrel is fixedly connected to the bottom of the separation barrel, silt generated in the cleaning process falls downwards into the silt storage barrel, a screening frame is fixedly connected into the separation frame, and quartz mortar liquid is poured into the screening frame to be scrubbed and screened. According to the device, rotation of the rotary screen is matched with impact cleaning of external water flow, impurities falling from the surfaces of quartz sand particles can directly penetrate through the rotary screen along with water flow to flow into a sediment storage barrel at the bottom in the cleaning process, and the situation that the impurities such as sediment are adsorbed on the surfaces of quartz sand again can be effectively avoided; and quartz sand particles are classified by using fine sieve holes and a coarse material discharging frame during cleaning.

The present invention relates to the technical field of sediment or sludge treatment of a water body, and provides a solidification material and a use thereof. The solidification material consists of the following components in percentage by mass: 30% of a sediment flocculant, 20% of a high-strength and high-water-resistant earth consolidator, 30%-40% of calcium bentonite, 5%-15% of a clay mineral, and 5% of an engineering admixture. When the solidification material is used in the sediment or sludge treatment of the water body, pollutants in sediments can be well immobilized, and as tested, no leaching of the pollutants occurs after immersion in the water body. Moreover, the usage amount of the solidification material is significantly reduced compared to that of a conventional solidification material, so that the impact on the storage capacity of the water body can be effectively reduced, and the construction cost is also saved.

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 discloses a sediment prediction method and system for oscillation period strategy snow ablation optimization, and the method comprises the steps: obtaining sediment data characteristics, enabling a drainage basin to comprise a plurality of nodes, and calculating the snow melting runoff of each node according to the sediment data characteristics; according to the snow melting runoff of each node, calculating the initial sand production concentration of each node; and constructing a sediment prediction model, inputting sediment characteristic data and corresponding actual sediment concentration to the sediment prediction model to obtain a trained sediment prediction model, inputting real-time sediment data to the trained sediment prediction model, and outputting predicted sediment concentration by the trained sediment prediction model. According to the method, historical sediment data are acquired, and a graph convolutional neural network is constructed for learning complex nonlinear mapping from snow melting-runoff generation to sediment transportation, so that the problems of weak generalization ability and strong data dependence of an existing snow melting period sediment prediction method are solved.

The present invention discloses an anti-siltation and anti-impact water-dividing structure for the intersection of a karst tunnel and an underground river. The structure utilizes an upstream water-dividing weir, a downstream force-dissipating weir, a porous box culvert-type V-shaped inverted siphon water pipe and an open overflow channel, so that the karst tunnel structure divides the underground river intersecting therewith into upper and lower water-passing sections; the lower water-passing section is a porous box culvert-type V-shaped inverted siphon water pipe, and the upper water-passing section is an open overflow channel. The water-dividing structure of the present invention diverts the underground river through the karst tunnel according to the dry season and the flood season. The buried depth of the V-shaped inverted siphon hole water pipe is shallow, and there is no need to adjust the water flow gradient of the underground river. In addition, the V-shaped inverted siphon hole water pipe solves the problem of siltation on the upstream side of the lining structure of the upstream karst tunnel. At the same time, the water-dividing weir reduces the impact load of the water flow on the lining structure during the flood season, so that the upper and lower diverted water loads achieve a certain degree of balance.