18 results about "Plaggen soil" patented technology

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 application discloses a kind of mucky soil area pit-in-pit construction methods, the method comprises: one, construction pit bottom reinforcing construction structure;Two, construction steel sheet pile;Three, excavate top layer earthwork;Four, excavate and support inside earthwork excavation area;Five, excavate first layer annular soil pit and third layer inside soil pit;Six, excavate second layer annular soil pit and fourth layer inside soil pit;Seven, pour pit-in-pit pile cap and remove steel sheet pile.The application is excavated before whole earthwork, and steel sheet pile is struck, and pit-in-pit and steel sheet pile outside earthwork excavation are formed under the premise of guaranteeing construction safety, and the construction period of whole raft is greatly shortened, and large foundation pit whole supporting system is formed faster, and the exposure time of deep foundation pit is reduced, and the construction operation risk of mucky soil deep foundation pit is reduced;Through the process of pre-striking steel sheet pile, steel sheet pile whole pile is completed once, and the strength of steel sheet pile body and water-resisting effect are guaranteed.

The invention relates to a self-water-absorption fracturing device for mucky soil and a grouting method for the mucky soil, the self-water-absorption fracturing device comprises a water-absorption fracturing assembly, the water-absorption fracturing assembly comprises a water-absorption resin body, a water-permeable forming layer and a water-permeable supporting layer, a containing space is formed in the inner side of the water-permeable forming layer, the water-absorption resin body is located in the containing space, and the water-permeable supporting layer is located in the containing space. The accommodating space is used for accommodating a plurality of water-absorbent resin particles so as to form a water-absorbent resin body on the inner side of the water-permeable forming layer; the periphery of the water-permeable forming layer is coated with the water-permeable supporting layer, and the water-permeable supporting layer is used for supporting the formed water-absorbent resin body; and the water absorption fracturing assembly is inserted into a grouting hole pre-formed in the mucky soil, so that water in the mucky soil is absorbed through the water absorption resin body, and the mucky soil cracks through water absorption expansion of the water absorption resin. The technical problems that slurry for reinforcing mucky soil diffuses unevenly, and the reinforcing effect is poor are solved.

The present invention discloses a silt soil carbonized brick, the components and their weight percentages including: 40-50 parts of enzymatically hydrolyzed silt soil, 30-50 parts of aggregate, 15-25 parts of carbonized raw materials, and 0.1-1 parts of fermentation liquid. The present invention uses silt soil with a high organic matter content as the main raw material, pre-treating it, hydrolyzing it with glucose enzyme, and enzymolyzing it with glucose oxidase to produce the enzymatically hydrolyzed silt soil. The carbonized raw materials and the fermentation liquid are then combined to create an oxygen-rich environment in the green brick, combined with yeast fermentation to generate carbon dioxide, effectively promoting uniform carbonization within the brick. The resulting carbonized brick has a compressive strength that meets the MU15 grade and excellent water-soaking performance, providing a new approach for the high-value-added resource utilization of silt soil. The preparation method involved is relatively simple, environmentally friendly, and suitable for promotion and application.

The invention discloses sludge-soil-based flow-state solidified soil and a preparation method thereof.The method comprises the steps that 1, potassium ferrate, sodium hydroxide, sodium tripolyphosphate and water are added into sludge soil and stirred and mixed, and sludge soil slurry is obtained; the mass of the potassium ferrate is 0.2%-0.7% of the mass of the mucky soil; 2, a curing agent and water are added into the mucky soil slurry, stirring and mixing are conducted, and flow-state solidified soil is obtained; the curing agent comprises sulphoaluminate cement, Portland cement, steel slag powder, fly ash, a plasticizer, sodium thiocyanate, calcium formate and sodium silicate. By adopting the preparation method disclosed by the invention, the shrinkage of the cured mucky soil can be reduced, the stable improvement of the curing strength of the early-stage, middle-stage, later-stage and long-term fluid-state cured soil is ensured, and the flowability of the fluid-state cured soil is improved.

The invention provides a mucky soil in-situ solidification stirring device which comprises a center drill rod, a vertical stirrer is fixedly installed at the bottom of the center drill rod, a conical piercing device is fixed to the bottom of the vertical stirrer, and a plurality of transverse rotary stirrers are installed on the outer surface of the circumference of the center drill rod. The top end of the central drill rod is fixedly connected with the bottom end of a power transmission rod through a flange, and the top end of the power transmission rod is connected with a rotary power system. Compared with the prior art, the stirring device has the following beneficial effects that the stirring device can be connected with a movable arm of the excavator, the stirring angle of the stirring device can be controlled through an extending arm oil cylinder of the excavator, meanwhile, the transverse rotary stirrer, the vertical stirrer and the conical piercing device can be driven to rotate by 360 degrees through the power system, and then the mixing and stirring effect is achieved; the slurry can be uniformly sprayed out by the transverse rotary stirrer, and the sprayed solidified slurry is stirred and mixed with the sludge soil layer.

The present invention discloses the technical field of drainage well plugging, specifically a drainage well plugging method for ultra-deep foundation pits under water-rich soft foundation conditions. After the water pump inside the drainage well is taken out, the present invention uses a hook made of discarded steel on site to quickly crimp and seal the tray and the sealing material, then injects glue between the drainage well and the steel casing, and after the glue injection, the sealing body is completely pressed to death on the inner wall of the drainage well, thereby achieving the drainage well plugging. Finally, the top of the steel casing is filled with micro-expansion concrete, fully welded and rust-proofed, and finally the drainage well is completely plugged, which can eliminate the construction of pressurized water-rich foundation with a large amount of backwater. For the plugging process of the drainage well in the structural bottom plate of pressurized water-rich silty soil, the new drainage well plugging technology can be easily installed and easily plugged after the drainage is completed, which can completely solve the stubborn problem of water seepage in the reserved hole of the drainage well and has good durability.

The utility model relates to the technical field of desilting equipment, in particular to hydraulic desilting equipment which comprises a water pump used for conveying a desilting water source, and further comprises a water supply part used for providing a scouring water source for desilting, a water conveying pipe installed at the water outlet end of the water pump in a communicating mode and a plurality of branch pipes arranged on the water conveying pipe in a communicating mode. A second silt washing nozzle and a first silt washing nozzle are respectively arranged on the water conveying pipe and the branch pipe in a communicating manner; the fixing assembly comprises a support used for installing the water conveying pipe, and the support is fixed to the base through an anchor plate; the water conveying pipe can be rapidly disassembled and assembled through the arranged fixing assembly, the arranged first silt flushing nozzle and the arranged second silt flushing nozzle can apply flushing water flow for flushing mucky soil, the hydraulic flushing principle can be utilized, the defects of a traditional desilting mode can be overcome, rapid and efficient cleaning of the mucky soil at the bottom of the gate is achieved, and the service life of the gate is prolonged. Normal operation of water conservancy facilities can be guaranteed; the device is simple and reliable in structure and has practicability.

The utility model discloses a double-layer foundation shallow layer solidification structure, and relates to the technical field of foundation treatment. Comprising a foundation pit, the foundation pit further comprises a lower curing layer and an upper curing layer, a bonding interface layer is arranged between the lower curing layer and the upper curing layer, a soft soil layer is arranged at the bottom of the foundation pit, a plurality of piles are embedded in the foundation pit, and the piles are vertically and horizontally arranged and embedded in the soft soil layer. The lower curing layer is located above the soft soil layer, and the upper curing layer is located above the lower curing layer; a synergistic stress system is formed through the double-layer foundation with the high-strength impermeability of the upper curing layer and the flexible bearing of the lower curing layer, the bearing capacity and stability of the foundation are effectively improved, sedimentation is reduced, the utilization rate of waste residues is increased, the material cost is effectively reduced, the structure is more environmentally friendly and saves energy, and the structure is particularly suitable for treatment of soft foundations and has good application prospects. Such unfavorable geological conditions as sludge and mucky soil.

The application discloses a kind of sampling head automatic conversion type ground matrix sampling device, with sampling ballast, threaded drill bit, combined shovel body, the bottom of sampling ballast is equipped with shaft driving part, and there is provided on shaft driving part upper and lower lifting assembly, lower lifting cylinder, shaft driving part drives upper and lower lifting assembly, lower lifting cylinder to lift, threaded drill bit top is connected with driving shaft part, and driving shaft part drives threaded drill bit to rotate, combined shovel body is composed of inner shovel body and outer shovel body, and inner shovel body top end is connected with transmission shaft part, and transmission shaft part adjusts the relative position of threaded drill bit and inner shovel body.In the application, different sampling heads are converted according to soil hardness, and rotary auger bit under natural state can be used for drilling-type sampling of high-hardness rock and gravelly soil, and for argillaceous soil area, it can be converted to outer shovel body or inner shovel body, and sampling personnel can use outer shovel body or inner shovel body to shovel soil for sampling, and the conversion of sampling head for different ground matrix realizes multifunctional sampling.

The invention provides an automatic electrostatic fine particle screening machine which is mainly applied to geotechnical tests, can efficiently screen out soil particles with the particle size being 0.075 mm or below, and greatly improves the efficiency of preparing mucky soil samples. The automatic screening machine mainly comprises a feeding port, a discharging port, a screen, a coarse particle outlet, a dust raising device, an air blower, a corona electrode and a dust collecting electrode. Firstly, a soil sample enters the equipment through the feeding port, fine particles in the soil sample are suspended through the dust raising device, and then the suspended fine particles are conveyed to the filter screen through the air blower. And then, the soil particles passing through the filter screen can obtain negative charges, and the soil particles with the negative charges can be gathered together under the action of the corona electrode. And finally, under the action of the dust collecting electrodes, the soil particles with negative charges can be attracted and deposited, and therefore efficient screening of the soil particles is achieved.

The application discloses a deep foundation pit construction method for in-situ mucky soil, which comprises the following steps: dividing a to-be-processed area into a plurality of square blocks and a plurality of layer step regions; performing the following operations on each step region in the to-be-processed area in sequence from top to bottom: adding a solidifying agent, stirring and standing, digging out the mucky soil after solidification, and setting a protective layer; adding the solidifying agent into the mucky soil at the bottom of the lowermost layer step region, stirring uniformly and standing, and constructing after the mucky soil meets the design requirement of solidification strength. The mucky soil of the foundation pit is solidified by using a soil solidifying agent, and a single process is used for construction, so that the difficulty of excavation is reduced. The deep foundation pit construction method for in-situ mucky soil solidifies the bottom and the slope of the foundation pit, has simple construction technology and convenient on-site construction. The anti-seepage performance of the soil after solidification treatment is obviously improved, and the seepage of the foundation pit can be effectively reduced. The solidified soil has a relatively short setting time, saves the engineering construction period, and has good economic benefits.

The disclosed ten-thousand-square-meter muddy deep foundation pit supporting structure deformation prediction method comprises the following steps: establishing a soil-supporting interaction rheological model, combining a Burgers rheological model to simulate the stress relaxation and creep effect of the muddy soil body, and realizing dynamic evolution prediction of the supporting structure deformation field and internal force field. The particle filtering algorithm is used to carry out denoising processing on the real-time monitoring data, the model parameters are updated through the Bayesian method, and the prediction accuracy is improved. At the same time, the random forest algorithm is used to establish a nonlinear mapping of the deformation rate and the internal force increment, and a failure risk probability distribution is generated. The present application sets multiple collapse early warning thresholds, uses a weighted average method to fuse the monitoring data and the prediction results, and identifies abnormal points in the high-risk area. For the high-risk area, the genetic algorithm is used to optimize the support system stiffness and prestress distribution, the construction parameters are dynamically adjusted, the deformation and internal force of the supporting structure are effectively controlled, and the safety of the deep foundation pit construction is ensured.

This utility model relates to the field of stabilization mechanism technology, and in particular to a stabilization mechanism for silty soil. Its technical solution includes at least two sets of bases, with a set of guide rods fixedly disposed between the bases. A first cylinder is fixedly disposed on the upper surface of the base, and a sliding sleeve is fixedly disposed at the output end of the first cylinder, the sliding sleeve being movably sleeved with the guide rods. A first fixed seat is fixedly disposed on the upper surface of the sliding sleeve, and a connecting plate is rotatably disposed on the first fixed seat. A second fixed seat is fixedly disposed on the upper surface of the base, and a mounting plate is rotatably disposed on the second fixed seat. One end of the mounting plate is rotatably connected to the connecting plate, and a mixing component for stirring the silt is disposed on one side of the mounting plate. This utility model can flexibly adjust the stirring angle according to complex geological conditions, thus being applicable to different silty geological treatments, accurately treating silty soil at different depths and angles, ensuring thorough mixing of the solidifying agent and silt, and fully realizing the solidification effect.

The application discloses a kind of soil solidifying agent and preparation method thereof, belong to building material technical field.The soil solidifying agent includes the following mass parts of raw materials: 80~100 portions HAS soil solidifying agent base material, 1~5 portions nano silicon dioxide, 0.5~3 portions triethanolamine, 0.1~1 portions anionic polyacrylamide and 0.5~2 portions sodium lignosulfonate.The application also discloses the preparation method of the soil solidifying agent, and the obtained product is suitable for the solidification treatment of various soil types such as soft clay, silt soil, tailings, etc.The formula of the application utilizes the high activity filling effect of nano silicon dioxide, the early hydration acceleration effect of triethanolamine, the space network bridging capacity of polyacrylamide and the dispersion and retarding function of sodium lignosulfonate, and each component synergistically acts, improves the solidification efficiency of the solidifying agent on high water content soil, and the early strength, water stability and freeze-thaw resistance are improved.

The application belongs to the technical field of soil solidification, and particularly relates to a composite solidifying agent for reinforcing mucky soil, a preparation method and application; the composite solidifying agent comprises cement, an activator, a hydration reaction accelerator and a soil binder; the hydration reaction accelerator promotes the hydration reaction of the cement solidifying agent; the soil binder clogs and blocks the soil particles in the mucky soft soil, thereby reducing water penetration in the mucky soil; meanwhile, the polyacrylamide, magnesium oxide expanding agent and polycarboxylic acid superplasticizer in the activator can improve the early strength or late strength of the solidified mucky soil, and through compounding, the early strength and late strength of the solidified mucky soil are simultaneously improved, so that the bearing capacity of the mucky soft soil is improved, and the occurrence of subsidence is reduced, thereby solving the technical problems that the soil solidifying agent in the prior art has poor reinforcing effect on mucky soil, and the drilling channel is prone to displacement deviation, deformation of a hole wall and settlement in the horizontal directional drilling construction process.

The application provides a device and method for extracting a sample of a silt soil, which comprises a soil containing cylinder, an outer ring cutter, a soil cutting device, a soil pressing rod and a rubber film; the soil containing cylinder is used for containing the silt soil obtained from outside; the soil containing cylinder has a hollow columnar structure; the outer ring cutter has a hollow columnar structure, one end of the outer ring cutter is sleeved on the soil containing cylinder and is detachably fixedly connected with the soil containing cylinder; the soil cutting device is installed on the inner side of the outer ring cutter and is located below the connection between the soil containing cylinder and the outer ring cutter; the soil pressing rod is inserted into the soil containing cylinder and is slidably connected with the soil containing cylinder; the rubber film is used for loading the undisturbed soil pushed out from the soil containing cylinder; the rubber film is sleeved on the outer side of the soil containing cylinder and the bottom of the rubber film is attached to the connection between the soil containing cylinder and the outer ring cutter. Compared with the related art, the technical scheme of the application has the advantages of simple structure, easy operation, high controllability, good undisturbed soil structure and high sampling efficiency.

The invention provides a compaction degree feedback rammer compactor for mucky soil pipe network construction. The compaction degree feedback rammer compactor comprises a movable rack, a main ramming head, a vibration assembly, a transmission assembly, a pressure sensor and a matched controller. Walking wheels are arranged at the bottom end of the movable rack. A telescopic structure is fixedly arranged at the top of the movable rack, and the telescopic end of the telescopic structure is connected with a tamping column. And the main tamping head is fixedly connected with the bottom end of the tamping column. The vibration assembly is provided with a vibration contact part surrounding the outer side of the main ramming head. The transmission assembly is connected with the tamping column and the vibration assembly and can drive the vibration assembly to move upwards when the tamping column moves downwards, or the transmission assembly drives the vibration assembly to move downwards when the tamping column moves upwards and enables the vibration contact part to make contact with the soil surface. The pressure sensor can monitor the soil body reaction force borne by the main ramming head. According to the mucky soil pipe network construction compactness feedback rammer compactor, through cooperation of the main ramming head and the vibration assembly, drainage consolidation is accelerated, meanwhile, small particles are driven to rapidly fill gaps among large particles, and then the compactness of soil is improved.