1097results about "Foundation repair" patented technology

The invention discloses a scouring pile foundation reinforcement method based on an MICP curing technology, which comprises the following steps: acquiring initial environment information such as scouring pit parameters, water flow parameters, tide period and seawater salinity of a delimited area around a pile, and determining grouting parameters such as a grouting window period and a safe flow velocity threshold value and a matching numerical value of a bacterial liquid concentration, a urea concentration and a calcium ion concentration; a grouting assembly composed of a first grouting pipe and a second grouting pipe which are spliced up and down is arranged, and grouting holes are formed in the side wall of the second grouting pipe which is pre-buried in a soil layer; after MICP slurry is prepared according to blending parameters, the slurry is injected into a soil layer in combination with grouting parameters, and meanwhile, the grouting process is dynamically adjusted by monitoring the resistivity of a soil body in real time; and after grouting is completed, the assembly is dismantled, and supplementary grouting is conducted on the local area according to the detection result. According to the method, the accuracy and reliability of pile foundation reinforcement are achieved through environmental parameter adaptation, grout dynamic regulation and control and layered detection and reinjection.

The invention relates to a pile foundation reinforcement method and system based on a karst area, and belongs to the technical field of foundation treatment and reinforcement. The pile foundation reinforcement method comprises the steps that a karst area pile foundation monitoring network is established, and karst cavity distribution characteristic parameters and underground water dynamic change parameters are obtained; constructing an adaptive evaluation model, and setting an initial real-time feedback correction parameter vector; based on a spatio-temporal evolution rule, generating a karst development comprehensive complexity index of dynamic evolution; a grading response mechanism is established, and pile foundation reinforcement early warning and response measures of corresponding grades are triggered; and constructing an intelligent decision-making system, and continuously optimizing an evaluation model and a reinforcement strategy through a feedback mechanism. According to the method, the karst development comprehensive complexity index is generated by introducing the underground water dynamic change parameters and combining the karst cavity distribution characteristic parameters, the evaluation of the geological environment is expanded from a static time point to a dynamic evolution process, and the comprehensiveness and accuracy of the evaluation are improved.

The invention discloses a low-shrinkage high-toughness sprayed concrete material as well as a preparation method and application thereof, and the low-shrinkage high-toughness sprayed concrete material is prepared from the following materials in parts by mass: 400 to 440 parts of cement, 50 to 70 parts of coal ash, 20 to 40 parts of silica fume, 170 to 190 parts of water, 850 to 880 parts of fine aggregate, 770 to 810 parts of coarse aggregate, 30 to 50 parts of accelerator and 3.2 to 6.0 parts of water reducing agent. Hybrid fibers: 30 to 50 parts of steel fibers and 0.9 to 2.7 parts of organic fibers. The low-shrinkage high-toughness sprayed concrete material provided by the invention can ensure high compressive strength and toughness, also has good durability and stability, effectively improves the construction quality of tunnel engineering, and has very excellent market prospects.

Disclosed herein are systems and methods for repairing and / or replacing a pile. In a specific embodiment, a system for repairing a pile includes: an elevating sleeve, where the elevating sleeve includes a top, a bottom, and a contiguous side wall spanning between the top and bottom, where the top is substantially closed, and the bottom is open, where the elevating sleeve is configured to fit over a top of a pile to be repaired, and where the elevating sleeve includes an input port and output port; one or more seals, where at least one seal includes an outer diameter shaped to fit within the elevating sleeve at or near the bottom of the elevating sleeve and an inner diameter to fit over the top of the pile to be repaired; one or more plugs; and a pump.

The invention relates to the field of pole tower pile foundation protection, and discloses a replaceable pole tower concrete pile foundation protection device which comprises a pole tower pile foundation embedded in underwater sludge; the foundation pit is arranged on the underwater sludge, the depth of the foundation pit reaches the middle position of the tower pile foundation base, and the foundation pit is filled with broken stones to form a broken stone hardcore; the mounting plates are arranged on the pole tower pile foundation; the protection plate is arranged on the mounting plate and is rotatably arranged on the mounting plate; and the protection plates can automatically rotate according to the strength and direction of water flow, and are matched with the anchoring effect of the inserting rods, so that the gravel hardcore is effectively stabilized, the gravel layer is prevented from being lost, and the stability and anti-scouring capacity of the pile foundation are further enhanced. Through the design of the clearing rod, sediments on the outer wall of the tower pile foundation can be regularly cleared away, unsmooth water flow or uneven scouring caused by sediment accumulation is avoided, and the situation that the service life of the pile foundation is shortened due to biological corrosion is prevented. And through the effective sliding and scraping effects of the removing rod, the corrosion influence of attachments on the pile foundation can be reduced, and smooth water flow is ensured.

The invention relates to a water-rich silt layer deep foundation pit waterproof curtain leakage rapid plugging system and a construction method, through a foundation pit filler isolation water diversion pressure relief plugging technology, plugging is carried out through fillers such as cotton fibers, then water diversion pressure relief flow guiding is carried out through a flow guiding device, the flow guiding device is convenient to manufacture, construction steps are simple, and the construction cost is low. Quick plugging of leakage points is realized, and the construction efficiency is improved; by means of the section steel support flexible cable net water injection bag rapid back pressure technology, when water seepage occurs around the foundation pit, water is injected into the flexible cable net water injection bag through a water injection device, the bag expands to generate reverse pressure, the wall of the foundation pit is pressed, a leakage channel is rapidly blocked, water seepage is prevented, and construction safety is guaranteed. Meanwhile, the water injection rate and pressure are flexibly controlled through the water injection system, and the requirements of different foundation pit environments can be met; through the back pressure technology after the built-in gravel perforated drainage pipe blind ditch, the underground water level in the foundation pit is effectively controlled, and the foundation pit leakage phenomenon is reduced.

The invention discloses a saturated soil foundation reinforcement method and system based on multi-field coupling, particularly relates to the technical field of geotechnical engineering reinforcement, and is used for solving the problems of parameter mismatch, material waste and secondary deformation caused by lack of dynamic coupling analysis in an existing grouting process. The seepage pressure, the soil deformation rate and the slurry diffusion rate are obtained in real time; generating a multi-field collaboration parameter and correcting the multi-field collaboration parameter; identifying an abnormal region of seepage and deformation direction deviation; extracting a seepage gradient and a diffusion main direction to generate correction parameters; performing staged gradient grouting; dynamically optimizing the parameter gradient and interval; outputting a stable state control parameter; and through multi-field data collaborative analysis and closed-loop feedback control, dynamic matching of grouting parameters and stratum response is achieved, and the reinforcement precision and the engineering reliability are remarkably improved.

The invention discloses a cast-in-place pile directional sliding device and a sliding method thereof, and relates to the technical field of civil engineering construction. The connecting assembly comprises a first connecting piece and a second connecting piece, and the first connecting piece and the second connecting piece are fixed to the side wall of the cast-in-place pile and distributed on the upper side and the lower side of the center of the cast-in-place pile; the sliding assembly comprises first horizontal sliding rails erected on the two sides of the protection wall. The pushing telescopic piece is located below the second connecting piece, and the pushing telescopic piece is used for driving the cast-in-place pile to ascend and descend; the first connecting piece can be upwards separated from the first horizontal sliding rail or downwards placed on the first horizontal sliding rail through lifting of the cast-in-place pile; the first side pushing telescopic piece is fixed to the first horizontal sliding rail and used for driving the cast-in-place pile to slide in the length direction of the first horizontal sliding rail. By the adoption of the scheme, the engineering piles exceeding the standard allowable deviation can be moved to the designated position, and the problems of pile refilling and the like are avoided; and the problem pile processing time is shortened, and the construction efficiency is improved.

The device comprises a permeable steel casing, a drilling machine and a counter-force frame, the permeable steel casing is provided with a permeable steel casing window and a permeable hole, a base is arranged at the bottom of the drilling machine, the drilling machine can be installed in the permeable steel casing through the base, and the counter-force frame is connected with the permeable steel casing window. And a turntable is arranged on the base. The high-pressure jet flow soil sampling rod on the drilling machine can rotate by 360 degrees, spouted high-pressure water makes raised soil below a bottom plate into slurry, the slurry is discharged into the permeable steel casing and pumped out of the ground through a slurry pump, a raised area of the bottom plate is emptied and then pressurized through a jack to restore to the original position, the slurry is replaced with the cement slurry, and a new bottom plate bearing layer is formed after reinforcement. The permeable steel casing for soil sampling is transformed into the dewatering well, the underground water level is controlled below the bottom surface of the basement bottom plate all the time through linkage of the automatic water level gauge and the water pump, and the problem that the underground water level of the basement bottom plate swells in extreme weather to cause damage and failure of an anti-floating structure again is solved.

The invention discloses a method and system for predicting the grouting effect of foaming type grout based on PSO-BP, and belongs to the field of grouting repair engineering.The method comprises the following steps that bedrock fracture characteristics are collected to obtain fracture opening, fracture roughness and hydrodynamic pressure, meanwhile, grouting influence factor data are obtained, the grouting influence factor data comprise the grouting amount, the grout component proportion and the grouting pressure, and the grouting influence factor data comprise the grouting amount, the grout component proportion and the grouting pressure; the method comprises the following steps: dividing fracture opening, fracture roughness, hydrodynamic pressure and grouting influence factor data into a training set and a test set by using a PSO-BP neural network model, generating a grouting diffusion distance prediction model and a grouting water plugging rate prediction model, predicting the test set through the generated models, obtaining predicted values of the grouting diffusion distance and the grouting water plugging rate, and predicting the grouting diffusion distance and the grouting water plugging rate according to the predicted values of the grouting diffusion distance and the grouting water plugging rate. And according to the two groups of predicted values and measured values, calculating to obtain a mean square error, a mean absolute error and a decision coefficient corresponding to each group to evaluate the prediction effect of the slurry grouting effect. According to the method, accurate prediction of the grouting repair effect of the foaming slurry is realized through the PSO-BP neural network.

The invention discloses a roadbed disease repairing method considering grouting pressure, grouting materials, soil texture types and disease types. The roadbed disease repairing method comprises the steps that it is judged that the roadbed soil texture type is clay sand or low-liquid-limit clay; judging whether the disease repair type is pure void repair or loose repair; and the grouting material and the grouting pressure are selected according to the influence rule of the grouting material and the grouting pressure on different disease repair effects of different roadbed soil properties. According to the method, the repairing effect is improved, meanwhile, the cost is reduced, and the defects caused by purely pursuing the optimal performance of a grouting material and the maximum grouting pressure in the prior art are overcome.

The invention relates to a glass fiber sleeve-underwater epoxy grouting material reinforced pile foundation construction method, pile foundation defect cleaning and glass fiber sleeve installation adopt a pull-up and support-down type liftable operation platform, can adapt to different height operation requirements, effectively improves the construction efficiency and safety, ensures the construction quality, and reduces the influence on the surrounding environment; a hoop pile foundation symmetrical underwater epoxy grouting material pouring device is adopted for pile foundation reinforcement, the bearing capacity and stability of a pile foundation are effectively improved, it is ensured that the pile foundation is kept stable under disturbance of water flow and waves through symmetrical underwater epoxy grouting material pouring, meanwhile, the cast-in-place workload is reduced, and the construction efficiency is improved; the hoop pile foundation hanging movable construction platform synchronous grouting pile side soil reinforcement technology is adopted, grouting is conducted through pile side guide hole pressure, the soil body bonding force and strength are effectively enhanced, the displacement difference is reduced, loads are more balanced and stable, and the pile foundation bearing capacity and stability are effectively improved.

The invention relates to the technical field of existing building reconstruction and reinforcement, and provides an existing building supporting structure reinforcement construction method aiming at the problem that an existing bearing platform is easily damaged when an existing column body is subjected to reinforcement treatment, the existing building supporting structure reinforcement construction method comprises the following steps that S1, a peripheral soil body of the existing bearing platform is excavated to the position below the bottom face of the existing bearing platform, so that a foundation pit is formed; s2, steel bar planting holes are drilled in the periphery of the existing bearing platform, and bearing platform connecting steel bars are planted in the steel bar planting holes; s3, a bearing platform reinforcing steel bar structure is bound on the periphery of the existing bearing platform, and the bearing platform reinforcing steel bar structure is connected with the bearing platform connecting ribs; s4, steel bar embedding holes are drilled in the periphery of the existing column body, and column body connecting steel bars are embedded into the steel bar embedding holes; s5, binding a column body reinforcing steel bar structure on the periphery of the existing column body, and connecting the column body reinforcing steel bar structure with the column body connecting ribs; and S6, concrete is poured on the periphery of the existing bearing platform and the periphery of the existing column body, and a post-poured bearing platform and a post-poured column body are formed. The method has the effect that when the existing column body is used for reinforcing the construction position, the existing bearing platform is prone to being damaged.

The invention provides an underground water purification plant pool wall underwater repair isolation device and a water-carrying repair construction method thereof. The device comprises a vacuum suction cup system, an isolation bin, a harmful gas monitor, a water pumping device and a monitoring terminal. The top face of the isolation bin and the side face facing the pool wall of the underground water purification plant are hollowed out, the suction cup part of the vacuum suction cup system is arranged on the outer edge of the hollowed-out side face of the isolation bin, and the negative pressure and filtering part of the vacuum suction cup system is arranged outside a treatment pool of the underground water purification plant. The negative pressure and filtering part of the vacuum chuck system is communicated with the chuck part of the vacuum chuck system; the harmful gas monitor is arranged in the isolation bin and is in wireless communication connection with the monitoring terminal; the water pumping end of the water pumping device is arranged in the isolation bin. According to the device, the life safety of underwater constructors can be guaranteed.

The invention relates to the technical field of underneath pass existing station construction, in particular to an underneath pass existing station underground excavation construction pile foundation jack force application control method and system. Information such as the position of a construction pile in an underneath pass construction area, the load of an existing station, existing station bottom plate stiffness and geological information of a stratum where the construction pile is located is collected; and constructing a finite element analysis model by using the information, and simulating stress change sample data generated when the plurality of construction piles are subjected to stress change by using the finite element analysis model. And then fitting the stress change sample data, and constructing a stress relation model reflecting the stress change relation of different construction piles. When pressure analysis is carried out, if the pressure is unbalanced, the stress relation model can be used for carrying out force application adjustment control on the abnormally stressed construction pile, so that the situation that local stress unbalance is aggravated is avoided.

The invention discloses a foundation structure underpinning construction method for a shield tunnel to penetrate through an upper building pile foundation, and belongs to the technical field of tunnel engineering pile foundation underpinning. The method comprises the following steps that grouting reinforcement is conducted on a foundation below a building foundation in a tunnel underpass area, and a tracking grouting condition is reserved on the edge of an original bearing platform; shallow foundation pit excavation is adopted, and a beam plate type raft foundation is constructed; steel supports are additionally arranged around first-layer columns of the building to serve as temporary supports; shield tunneling construction is carried out; and tracking grouting is conducted according to the monitoring result, and finally the foundation pit is backfilled. The problems that when a traditional shield tunnel penetrates through a building under the ground, the tunnel burial depth is changed or a house is directly dismantled, so that additional cost is increased, and the construction period is delayed are solved; the influence of pile grinding of the shield tunneling machine on a building above can be reduced; and house demolition is not needed, only shallow foundation pit operation is carried out, the safety of a tunnel lining structure and an upper building is protected, and construction continuity is guaranteed.

The utility model relates to the technical field of photovoltaic supports, in particular to a photovoltaic support cast-in-place pile reinforcing device which comprises a cast-in-place pile, one part of the cast-in-place pile is exposed out of the ground, the other part of the cast-in-place pile is deeply buried in the ground, a fixing seat is fixedly installed at one end, deeply buried in the ground, of the cast-in-place pile and is in a circular truncated cone shape, and a plurality of feeding holes are formed in the fixing seat. A pair of buffering plates is arranged on the peripheral wall of the portion, exposed out of the ground, of the cast-in-place pile, the pair of buffering plates are in a semi-arc shape and can be attached to the peripheral wall of the cast-in-place pile, a plurality of springs are fixedly installed at the other ends of the pair of buffering plates, and the other ends of the springs are jointly connected with a semi-cylinder. According to the device, the buffer plate is arranged on the periphery of the cast-in-place pile, the semicircular cylinders are combined through the two pairs of threaded rods, the buffer plate makes contact with the cast-in-place pile, when the cast-in-place pile vibrates, acting force is transmitted to the semicircular cylinders through the buffer plate, the reinforcing effect can be achieved, and the reinforcing device is convenient to mount and dismount and beneficial to actual use.

The invention discloses a foundation pit stand column top end elevation control device and method, and relates to the technical field of foundation pit engineering. The foundation pit stand column top end elevation control device comprises a height adjusting assembly which is used for being arranged on a steel latticed column and dividing the steel latticed column into an upper-layer steel latticed column and a lower-layer steel latticed column so that the elevation of the upper-layer steel latticed column can be adjusted through the height adjusting assembly; the control assembly is electrically connected with the height adjusting assembly, and the control assembly is used for controlling the height adjusting assembly; the monitoring assembly is used for monitoring the elevation of the upper-layer steel latticed column; the numerical control terminal is electrically connected with the control assembly and electrically connected with the monitoring assembly. The numerical control terminal sends a signal to the control assembly, and the control assembly controls the height adjusting assembly to reduce the elevation of the upper-layer steel latticed column until the monitored elevation recovers to the initial value, so that the control device can reduce the shearing force of the joint of the supporting cross beam and the stand column when the bottom of the foundation pit bulges.

The utility model belongs to the technical field of existing building expansion construction, and discloses a pile-to-column reinforcing construction device, which aims to solve the technical problems existing in the prior art that a pile foundation is adopted to form an underground space through downward digging of the pile foundation, and comprises a raft plate arranged on the upper portion of an original pile, and drilling anchoring holes are longitudinally formed in the periphery of the raft plate. Longitudinal load-bearing steel bars are anchored in the drilling anchoring holes and located on the outer side of the original pile, the tops of the longitudinal load-bearing steel bars penetrate through and are fixed to the original bearing platform, columns are arranged on the top of the original bearing platform, formworks are arranged on the peripheries of the longitudinal load-bearing steel bars, pouring pipes are connected to the formworks, and the pouring pipes penetrate through the original floor slab and then are connected with pouring funnels. And a concrete layer is poured between the template and the original pile. By means of the characteristics of a building structure and a high-position pressurization method, pouring of concrete of the enlarged section is improved, the concrete is compacted through the pressure of the concrete, and the phenomenon that pouring of concrete at the bottom of an original bearing platform and a newly-added section is not compact is avoided.

The invention relates to a marine environment mass concrete construction and crack repairing method, which comprises the following steps: in a mass concrete construction stage, carrying out aggregate precooling, carrying out layered intermittent pouring by using the precooled aggregate, and carrying out cooling treatment at the same time, so that the internal and external temperature difference is controlled within 20 DEG C; if cracks appear on the mass concrete, a polymer modified cement-based composite material is prepared for repairing, the polymer modified cement-based composite material comprises composite gel, a macromolecular tackifier and aggregate, the composite gel is based on 60%-70% of Portland cement, and 5%-8% of nano silicon powder and 10%-15% of fly ash are doped; the macromolecular adhesive comprises 0.5%-1.2% of polyacrylamide or 2%-3% of epoxy resin emulsion. When the scheme is used for repairing marine mass buildings, the overall viscosity of concrete can be improved, the internal and external temperature difference of the concrete is reduced, and the overall impermeability of the concrete repairing material is improved.

The invention relates to the technical field of power transmission iron tower foundation reinforcement, in particular to an iron tower foundation reinforcement structure and method.The iron tower foundation reinforcement structure comprises a bearing platform, inclined anchor rods, a cushion layer and grouting holes, the grouting holes are formed in a soil body around an original iron tower foundation in the circumferential direction of the original iron tower foundation, and pressure grouting is conducted; holes and cracks are locally filled through extrusion of soil around the original foundation of the iron tower and permeation of slurry, so that the bearing capacity is improved; the bearing platform is formed on the original foundation of the iron tower and is matched with the inclined anchor rods, so that the pulling resistance and the lateral supporting force of the original foundation of the iron tower are improved, the reinforcing effect on the original foundation of the iron tower is achieved, the stability of the original foundation of the iron tower under complex working conditions and severe environments is enhanced, and normal and safe operation of a power transmission line is ensured.

The utility model provides a latticed column deviation reinforcing component which comprises a deviation latticed column of a deep foundation pit latticed tower crane foundation and profile steel connecting rods connected with the deviation latticed column. Triangular box body connecting steel plates are arranged between the deviation latticed column and the profile steel connecting rods. And the triangular box body connecting steel plates are respectively welded with the profile steel connecting rods and the offset latticed columns. According to the utility model, the problem of deviation of the lattice column of the deep foundation pit lattice type tower crane foundation can be solved, the construction procedures can be reasonably arranged, the subsequent construction period is not influenced, and the safe use of the subsequent tower crane foundation can be ensured.

The invention discloses an equipment raft foundation underpinning frame with underground cavities and a reinforcing method, and belongs to the technical field of industrial equipment foundation reinforcing and deviation rectifying, the equipment raft foundation underpinning frame comprises a plurality of vertical bearing structures, the vertical bearing structures are distributed in the area with the underground cavities in an array mode, reinforced concrete connecting beams are connected between the vertical bearing structures in the same row, and the reinforced concrete connecting beams are connected between the vertical bearing structures in the same row. Dragging and replacing steel beams are connected between the vertical bearing structures in the same row, and a foundation raft is borne on the dragging and replacing steel beams. An assembly type construction thought is innovatively adopted, and a steel-concrete composite structure thought is proposed for underpinning, namely, the characteristic that the vertical bearing capacity of a concrete structure is high is fully utilized, and a vertical bearing structure is constructed. The flexural capacity of a steel structure is fully utilized, and the steel structure is adopted as an underpinning cross beam. According to the innovative scheme, standardized design, factory-like batch production and on-site assembly type construction can be achieved, the project construction progress is improved, the project quality is convenient to control, and the modules can be reused.

To solve the problem of the conventional reinforcement method of an object using a continuous fiber sheet in which the viscosity of the resin used was low, which results in inferior attachment on a ceiling and longer drying time.SOLUTION: A repair or reinforcement method of an object according to the present disclosure comprises the steps of: (a) coating a first resin composition (20) with viscosity of 30 Pa s or more and 85 Pa s or less directly or through a substrate layer (10) on the object (1); placing a fiber resin composite member (30) on the first resin composition (20) coated in the step (a); (c) coating a second resin composition (40) with viscosity of 30 Pa s or more and 85 Pa s or less on the fiber resin composite member (30) placed in the step (b); placing a polymer sheet (50) on the second fiber resin composite composition (40) coated in the step (c); and (e) defoaming in a way of pushing out the second resin composition from above the polymer sheet (50).SELECTED DRAWING: Figure 2

The utility model discloses a foundation reinforcing device for constructional engineering, belongs to the technical field of foundation reinforcing, and aims to solve the problems that a foundation reinforcing pile is small in contact area with a soil layer and poor in anti-pulling effect, and a concrete reinforcing pile is simple in structure and low in stability. The outer surface of the top end of the supporting column is fixedly connected with a bearing plate, and the outer surfaces of the two sides of the supporting column are fixedly connected with a plurality of barbs distributed at equal intervals. The barbs are arranged on the outer surfaces of the left side and the right side of the supporting column, the clamping rods are fixedly connected to the side face of the fixing column, the contact area of the supporting column and a soil layer is increased, the anti-pulling effect of the reinforcing pile is improved, the two side inserting rods move outwards to be inserted into a concrete layer, the stability of the reinforcing pile is improved, and the service life of the reinforcing pile is prolonged. The problems that the contact area between a foundation reinforcing pile and a soil layer is small, the anti-pulling effect is poor, and a concrete reinforcing pile is simple in structure and low in stability are effectively solved.

The invention discloses a method for treating cracking of a power transmission tower foundation by reducing uplift force. The method comprises the following steps: building an uplift-resistant foundation; processing a connecting plate; a protective cap of the cracked foundation is dismantled; welding the connecting plate and the tower foot plate; installing a temporary stay wire for controlling the safety of the iron tower; the cracked concrete is removed; pouring and curing concrete at the cracking part; dismantling the temporary stay wire; and pouring a concrete protective cap. According to the method for treating power transmission tower foundation cracking by reducing the upward pulling force, the upward pulling force acting on the foundation is reduced, and cracked concrete is removed, so that the problem of foundation cracking is fundamentally solved.

The invention discloses a method for pouring a concrete anti-seepage body through a large dam foundation karst cave guide pipe, which comprises the following steps of: designing an optimal size parameter of a trapezoidal section of the concrete anti-seepage body, generating a numerical model, establishing a single concrete pouring guide pipe, namely a single guide pipe and a single hopper, and carrying out concrete accumulation numerical simulation. Flow parameters of concrete particles of the numerical model are determined, a plurality of concrete pouring guide pipes, namely a plurality of guide pipes and a plurality of hoppers, are established based on the data, concrete accumulation numerical simulation is carried out, an arrangement scheme of the concrete pouring guide pipes is determined, and a prediction model with the optimal performance is constructed; and inputting the flow parameters of the concrete particles of the numerical model into the prediction model with the optimal performance to obtain the mix proportion of the conduit pouring concrete. According to the method, the optimal trapezoidal section, the guide pipe arrangement parameters and the concrete mix proportion of the anti-seepage body are designed through various technical means, and the large dam foundation karst cave guide pipe pouring concrete anti-seepage body is effectively guided.

The invention relates to a building inclination deformation treatment structure and method, the treatment structure comprises a plurality of drill holes, a plurality of peripheral heaped loads and a plurality of internal heaped loads, the drill holes are formed in a foundation of a building, the hole openings of the drill holes are located in the outer side of the foundation, and the drill holes are drilled in the bottom direction of the building by a preset length; the multiple drill holes are formed in the circumferential direction of the building at intervals. Along settlement distribution of the building, the building is provided with a plurality of units on a horizontal projection plane, the units comprise at least one deviation rectifying reference unit, at least one deviation rectifying unit and at least two transition units, the deviation rectifying reference unit is the side, with the largest settlement depth, of the building, and the deviation rectifying unit is the side, away from the deviation rectifying reference unit, of the building. The transition unit is located between the deviation rectifying reference unit and the deviation rectifying unit, and the peripheral stacking load is arranged in the outer side area of the deviation rectifying unit and the transition unit and is close to the deviation rectifying unit and the transition unit; and the internal heaping load is an auxiliary heaping load and is arranged in the building. The treatment structure can effectively treat inclination deformation of the ancient building caused by differential settlement of the foundation.

The invention discloses a urease-producing microorganism induced calcium carbonate deposition solution for foundation reinforcement and a preparation method and application thereof, and belongs to the technical field of foundation reinforcement. The urease-producing microorganism induced calcium carbonate deposition solution comprises a bacterial solution, a cementing solution and a sodium citrate solution, the bacterial liquid comprises bacteria capable of generating urease and citrobacter freundii. Sodium citrate in the urease-producing microorganism induced calcium carbonate deposition solution can chelate free calcium ions in advance, the concentration of the free calcium ions is reduced, the risk of precipitation at an injection port in the single-phase injection process is eliminated, and the solution can smoothly permeate into a deep layer; citrobacter freundii produces acid through metabolism and utilizes citric acid radicals through metabolism to ensure gradual release of calcium ions, so that uniform deposition of calcium carbonate is triggered. Through the synergistic effect of sodium citrate chelated calcium ions and citrobacter freundii metabolism, the solution can be uniformly distributed in the soil sample, and the problem of uniformity of single-phase perfusion is successfully solved.

The invention relates to the technical field of undersea pile foundation scour prevention, and discloses an undersea pile foundation bottom scour prevention reinforcing device and method.The undersea pile foundation bottom scour prevention reinforcing device comprises a base, a clamping mechanism is arranged in the base and used for clamping a pipe pile, and the pipe pile is located on the inner side of the base and can reinforce silt around the pipe pile; according to the device, the foundation pit position of the pipe pile can be filled and buried by utilizing the stone filled during anti-scouring, scouring can be prevented, the silt scoured at other positions can be blocked and intercepted, the surrounding of the pipe pile is further reinforced through the intercepted silt, the whole device is recycled after the pipe pile is removed, and the foundation pit position of the pipe pile can be filled and buried by utilizing the stone filled during anti-scouring; the tubular pile can be clamped and fixed, shaking during penetrating is prevented, the foundation around the tubular pile can be isolated, silt can be isolated, the tubular pile can be prevented from being scoured and taken away, and the tubular pile can be drilled into deeper rock to be fixed.