43 results about "Chemical grouting" patented technology

The utility model relates to the technical field of grouting reinforcement in tunnel engineering, and discloses a device for testing the water resistance of a chemical grouting material. The technical problems that in the prior art, a performance index test device is single, test result deviation is prone to occurring in multiple devices, the water resistance of grouting slurry under different dynamic water pressure working conditions cannot be simulated, and the grouting process of water-rich broken surrounding rock in an actual tunnel cannot be simulated are solved. The device comprises a barrel body, a bottom sealing steel plate and a water pressure diffusion assembly, a grouting hole is formed in the center of the bottom sealing steel plate and connected with a grouting pipe, and thermocouple sensors are arranged; the water pressure diffusion assembly is a cavity cylinder which is connected with a water injection pipeline, a water outlet hole and a water pressure detection sensor. The device can be used for simulating the water resistance of the grouting slurry under different dynamic water pressure working conditions, can be used for testing the diffusion distance, the anti-scouring property, the reaction temperature and the cementitious body permeability coefficient of the grouting material at the same time, and eliminates the error of the test result of the performance indexes by adopting a plurality of devices.

The invention relates to the field of ocean pile foundation maintenance, and discloses a construction method for reinforcing a soil body around a pile based on microbial capsules and a reinforcing structure. The construction method comprises the following steps: culturing urease-producing bacteria; the method comprises the following steps: mixing a first water-soluble capsule for encapsulating cementing powder, a second water-soluble capsule for encapsulating bacterial sludge and graded broken stone and grit to form a mixture; and the mixture is placed in an expected reinforcement area around the pile. Bacterial sludge and cementation powder are packaged through two kinds of capsules respectively and mixed with graded broken stone, then the mixture is put around a pile, the capsules are supplemented regularly, and microorganism-induced mineralization reinforcement is achieved. According to the reinforcement method combining the microbial capsules with the gravel, the anti-scouring capacity of the soil around the pile can be effectively enhanced through the calcium carbonate deposition reaction generated by microorganisms, and compared with a traditional physical protection and chemical reinforcement method, better environmental adaptability and sustainability are achieved; and salt erosion and pollution of a traditional chemical grouting material are avoided.

The utility model discloses a concrete equipment crack chemical grouting repairing device which comprises a device body, a cart is arranged on the device body, a mixing tank is arranged on one side of the upper portion of the cart, a stirring mechanism used for mixing and stirring raw materials is arranged above the mixing tank, and the stirring mechanism is connected with the cart. A wall scraping mechanism used for scraping slurry adhered to the inner wall of the mixing tank is fixed to the stirring mechanism, a supporting frame is fixed to the other side of the upper portion of the cart, a containing plate is fixed to the supporting frame, a winding roller is arranged on the containing plate, a hook is fixed to one side of the containing plate, a handheld electric lifting rod is placed on the hook, and the handheld electric lifting rod is fixed to the other side of the cart. According to the slurry mixing device, raw materials of slurry can be fully stirred conveniently to be more uniform, the phenomenon that the slurry is solidified due to long-time standing can be prevented, the slurry adhered to the inner wall of the mixing tank can be scraped conveniently, cleaning is convenient, manpower is saved, meanwhile, cracks with different depths can be repaired conveniently, and the working efficiency is improved.

The invention relates to the technical field of concrete dams, in particular to a concrete dam deep crack comprehensive treatment method which comprises the following steps: firstly, drilling a crack stopping hole in the tail end of a crack to prevent the crack from extending; then slotting along the crack, burying an exhaust pipe, and sealing the crack; then, deep reinforcement and anti-seepage treatment are carried out step by step, specifically, grouting seam penetrating holes are drilled, superfine cement grout is poured, chemical grouting seam penetrating holes are drilled in the upstream face, and epoxidation chemical grout is poured; then, an SR anti-seepage cover plate is pasted on the upstream face crack area; and finally, integrally spraying a polyurea coating. By means of the multi-layer treatment process combining structure reinforcement and flexible seepage prevention from inside to outside, the reliability and durability of crack treatment are remarkably improved, the dam face can be kept uniform and attractive in appearance, and the method has the advantages of being reliable in technology, economical and reasonable.

This invention provides a method for reinforcing existing underground shelters and existing underground structures using chemical grout injection, enabling their effective use as underground shelters. [Solution] The method for reinforcing an existing underground structure 11 according to the present invention is characterized by performing ground improvement using a chemical grout injection method on the ground 1 on the outer perimeter of the existing underground structure 11, thereby reducing the saturation of the ground 1 and making it unsaturated, and constructing a buffer body 12 on the outer perimeter of the existing underground structure 11, thereby attenuating energy acting from the outside. Furthermore, if the existing underground structure 11 is an existing underground shelter, a buffer body 12 made of reinforced ground can be formed on the outer perimeter of the underground shelter by chemical grout injection, thereby improving the durability, strength, and safety of the underground shelter against, for example, incoming ballistic missiles.

The invention relates to the technical field of reclamation area foundation reinforcement, and particularly discloses a collaborative resistance increasing construction system and method for a reclamation area multi-stage anchoring uplift pile, through a multi-stage anchoring structure, in combination with a microorganism induction mineralization technology and a power pre-pressing compaction technology, the binding force and uplift performance of a pile body and a soil body are remarkably improved, and the construction efficiency is improved. In addition, an environment-friendly microorganism grouting mode is adopted to replace traditional chemical grouting, and negative effects on the ecological environment are reduced. Vibration and a vacuum drainage process are combined in the pre-pressing compaction process, so that the compaction and consolidation process of the soil body is further accelerated, and the stability of the pile body in a complex soil layer and a marine environment is ensured. According to the scheme, through structure optimization and process collaboration, the bottleneck problem of application of a traditional uplift pile in a reclamation area is solved, and remarkable economic benefits and environmental advantages are achieved.

The application discloses a kind of advance composite type chemical grouting support methods of shield tunneling construction, comprising the following steps: setting grouting anchor rod, grouting anchor rod extends to unexcavated area upwardly inclinedly;Grouting anchor rod is arranged three layers from top to bottom;First, form two-component polyurethane reinforcement area in the uppermost layer, second, form permeation solidification reinforcement area in the lowermost layer, finally, form foaming extrusion reinforcement area in the middle layer;The application sequentially composites permeation solidification reinforcement area, foaming extrusion reinforcement area and two-component polyurethane reinforcement area from bottom to top, utilizes the characteristics that two-component polyurethane material is poor in permeability but high in strength, reinforces the geological condition area that cannot permeate in upper side, utilizes the characteristics that permeability chemical grouting material is strong in permeability but not high in strength, plays the role of solidification to the geological condition area of lower layer, keeps the performance improvement of own area soil body, finally, extrusion reinforcement is carried out by foaming type chemical grouting in the middle layer, so that the overall reinforcement effect is further improved.

The utility model relates to the technical field of ship lock structural seam chemical grouting, in particular to an expansion fixing type ship lock structural seam chemical grouting pipe device which comprises a supporting assembly and a grouting assembly movably inserted among a plurality of vertical rods, and the grouting assembly comprises grouting pipes movably inserted among the vertical rods. A plurality of connecting plates are fixedly installed on the outer side surface of the grouting pipe at equal angles, a plurality of connecting bases are fixedly installed on the surface of one side of each connecting plate at equal intervals, pointed cone ejector rods and plugging assemblies are rotationally connected into the connecting bases, and the connecting bases are fixedly installed at one ends in the grouting pipe. The supporting assembly is inserted into the grouting hole, loose concrete blocks on the inner wall of the grouting hole are cleaned, the grouting pipe is smoothly inserted into the grouting hole, the pointed cone ejector rods abut against the inner wall of the grouting hole by lifting and pulling the grouting pipe, the grouting pipe is fixed, the grouting pipe can be conveniently operated by a single person, meanwhile, a tool is replaced for clamping and fixing the grouting pipe, and the construction efficiency is improved. And the fixing process of the grouting pipe is simpler and more convenient.

To provide a reinforcement method of an existing underground structure reinforcing an existing underground shelter and the existing underground structure through a chemical injection method to enable them to be used effectively as an underground shelter.SOLUTION: A reinforcement method of an existing underground structure 11 is to improve durability against energy acting from the outside and / or shield performance against radiation through reinforcing the ground 1 of an outer periphery of the existing underground structure 11 through a chemical injection method to form a buffer body 12 by a reinforced foundation in the outer periphery of the existing underground structure 11. Further, durability, strength, and safety are further improved as an underground shelter against, for example, an incoming ballistic missile by forming the buffer body 12 by a reinforced foundation by injecting chemical in the outer periphery of the underground shelter where the existing underground structure 11 is the existing shelter.SELECTED DRAWING: Figure 1

The invention discloses an underwater chemical grouting device and a grouting method. The underwater chemical grouting device comprises a bottom plate, the material barrel is connected to the bottom plate through a gear box, supporting legs are arranged between the material barrel and the bottom plate, the gear box is connected with a driving motor and provided with a pump, the outlet end of the pump is connected with a pressure gauge, and the pressure gauge is connected with a nozzle through a high-pressure pipe; the device further comprises a pipeline storage mechanism, the pipeline storage mechanism is arranged on the bottom plate and close to the pressure gauge, and the high-pressure pipe is wound around the pipeline storage mechanism. The long-distance conveying requirement of the grouting device can be met, the high-pressure pipe can be stored conveniently, and the situation that the high-pressure pipe is wound, and consequently the slurry conveying effect is affected is prevented.

The present invention discloses an experimental method for evaluating the long-term impact of chemical grouting of porous and fractured rock formations on groundwater quality, comprising the following steps: construction of a model system, pretreatment of test materials and filling of a grouting model, slurry selection and closed grouting, grouting body infiltration, and water quality analysis and hydrochemical analysis and evaluation of the filtered water. The method of the present invention has the characteristics of replaceable grouting materials and adjustable infiltration flow rate; it can realize long-term real-time dynamic monitoring and recording of infiltration flow rate through digital flow and velocity meters, and measure the permeability coefficient of the grouting body; by analyzing the water quality information of the grouting body leachate, it is possible to explore the pollution effect of grouting on the groundwater environment and the interaction between the slurry and the geological body; the method also provides a subsequent hydrochemical analysis template of the grouting body leachate, thereby constituting an indoor systematic evaluation of grouting pollution.

The utility model belongs to the technical field of hydraulic engineering, and particularly relates to a chemical grouting hole detection device which comprises an inclination angle measuring disc, a connector, a depth measuring scale and a grip. A solid rolling steel ball abutting against the outer wall of the fixed shaft is placed in the rotating steel ring, a scale pointer is connected to the rotating steel ring, the depth measuring ruler comprises a sleeve and a measuring strip, and the sleeve is welded to the top end of the measuring strip and located in the center. The scale pointer drives the rolling steel ring to rotate around the center of the inclination angle measuring disc under the action of earth gravity, and the included angle between the scale pointer and the measuring strip is the inclination angle of the grouting hole, so that the inclination angle of the grouting hole can be presented in a datamation form, and the depth of the grouting hole is measured through the measuring strip. Finally, whether the inclination angle of the grouting hole meets the construction organization design requirement or not is judged through calculation.

The invention discloses a fast-curing high-permeability chemical grouting material as well as a preparation method and application thereof. The chemical grouting material consists of a material A and a material B, the material A is composed of water glass and a functional additive; the material B is prepared from ethylene glycol diacetate and water; the functional additive is one or a mixture of two or more of a coagulation accelerator, a viscosity modifier, a reinforcing agent and a water-resistant agent; in the material B, the volume ratio of ethylene glycol diacetate to water is 1: (1-3); the volume ratio of the material A to the material B is (60-90): (3-30); the preparation method comprises the following steps: uniformly stirring and mixing the water glass and the functional additive to obtain a material A; uniformly stirring and mixing ethylene glycol diacetate and water to obtain a material B; before grouting, the material A and the material B are uniformly mixed and then immediately used for treatment projects such as reinforcement and water stop in grey sandstone stratums, and the problems that an existing grouting material is high in viscosity, curing time is difficult to regulate and control, and the strength of a cured body is insufficient can be solved.

The utility model relates to the technical field of water conservancy and hydropower engineering, in particular to a high-pressure chemical grouting device for different directions of surrounding rock of a high-pressure water channel system. Comprising a slurry outlet pipe, a slurry inlet pipe, a first sealing element, a second sealing element and micro-expansion quick-setting cement, the micro-expansion quick-setting cement is fixedly arranged outside the slurry outlet pipe and the slurry inlet pipe in a sleeving mode, the first sealing element is fixedly connected with the slurry outlet pipe and located on the slurry outlet pipe, and the second sealing element is fixedly connected with the slurry inlet pipe and located on the slurry inlet pipe. The device can be simply and quickly adjusted to be simultaneously suitable for upward and downward drilling grouting, and the problem that grout in a hole is prone to backflow under high pressure is solved.

The present application relates to a tunnel collapse rapid processing method using an assembled adaptive inflatable bag support, comprising reinforcing the non-collapsed section around the tunnel collapse, measuring the height and volume of each region of the tunnel collapse cavity, determining the required number of supports and support installation positions, then installing the supports and inflatable bags, performing two-stage hole making and chemical grouting in the reinforced section, forming a grout stopping layer and a consolidation layer below the collapsed broken body, removing the inflatable bags and supports, building a steel arch below the grout stopping layer, arranging a pipe shed between the steel arch below the grout stopping layer and the steel arch of the reinforced section and spraying rapid-setting concrete, so that the inside of the tunnel is separated from the cavity to form a protective shell, and secondary lining reinforcement is performed, and finally, holes are made in the reinforced section to the inside of the cavity and backfilled. The present application uses an assembled adaptive inflatable bag and support to quickly process the tunnel collapse, which can block the continuous intrusion of the collapsed body in the cavity into the construction space, preventing the slow cleaning work from reducing the construction efficiency.

The application discloses a coal mine low-permeability sandstone ground water plugging and water reduction method based on sealing utilization, and specifically implements the following steps: step 1, arranging a ground injection well and a pumping and observing integrated well according to parameters of a treatment area; step 2, determining a drilling structure of the injection well and the pumping and observing integrated well; step 3, preparing a calcium hydroxide aqueous solution and an industrial waste gas CO2 aqueous solution; step 4, sequentially injecting the calcium hydroxide aqueous solution and the CO2 aqueous solution into the treatment area, and adjusting injection parameters and determining an end time through monitoring results of the pumping and observing integrated well in the injection process, and ending the water plugging and water reduction work. The application solves the problems of the prior art, such as large viscosity of a cement-based grouting material, difficulty in entering low-permeability sandstone micropores, only macroscopic fissure plugging, poor plugging effect, underground water pollution caused by chemical grouting and unreasonable application of industrial waste gas CO2.

The invention provides a soft rock tunnel large deformation stress release monitoring method, and belongs to the technical field of soft rock tunnel deformation monitoring. Stress component data and displacement vector data of continuous 180 days after excavation are collected, a principal stress value is obtained through coordinate transformation processing, and the stress release rate is calculated; a surrounding rock stress release spatial-temporal characteristic matrix is constructed, singular value decomposition is carried out to obtain a dominant stress release mode, a threshold judgment system based on the principal stress release rate is established to divide the surrounding rock state into a rapid release state, a slow release state and a stable state, and the monitoring frequency and the lining construction time are adjusted according to the judgment result. And a crack network topological graph model is constructed, a crack network connectivity index is calculated through a graph connectivity analysis algorithm, whether a chemical grouting repair program is started or not is judged, and the problem that the judgment of the lining construction opportunity is inaccurate due to the fact that spatial-temporal evolution characteristics in the soft rock tunnel stress release process are difficult to accurately recognize is solved.

The present invention belongs to the technical field of grouting for dike foundations, and discloses a polyurethane permeation chemical grouting device and method for dike foundations, including a grouting pipe for injecting polyurethane liquid. The present invention utilizes a motion component and a conveying component to cooperate with each other. When the liquid passes through the conveying component, the motion pipe is driven to rotate via a transmission belt. Since the metal block on the inner wall of the motion pipe is adapted to the notch on the outer periphery of the driving shaft, the driving shaft rotates with it, and the gear at the lower end rotates and moves via a guide tooth plate, forcing the conveying pipe to swing. At this time, the guide plate rotates to the bottom of the bracket, which ensures that the gear always engages with the guide tooth plate when the conveying pipe swings. The conveying pipe simultaneously drives the diversion component to swing, thereby expanding the range of the polyurethane liquid injection, and can more completely inject the polyurethane liquid into the fine cracks of the foundation, thereby improving the strength of the subsequent foundation and enhancing its waterproofness.

A portable multi-component chemical grouting machine and operation method specifically for deep-sea environments, including a storage tank, which is internally provided with two chemically grout sub-storage barrels arranged side by side for storing chemical grout, and a storage tank piston is cooperatively installed in each chemically grout sub-storage barrel. The end output port of each chemically grout sub-storage barrel is connected to a three-way joint through a pipeline, and it is connected to the inlet end of a grouting pipe through a pipeline. The grouting pipe is fixedly arranged on the top surface of the storage tank. A hydraulic cylinder is installed beside the grouting pipe, and the output end of the hydraulic cylinder extends into the interior of the grouting pipe. The output end of the hydraulic cylinder is threadedly connected to a grouting piston inside the grouting pipe. A grouting joint is installed on the top surface at one end of the grouting pipe through a hose. Different components of chemical grout can be carried by an underwater robot into underwater operations at various depths, and can be instantaneously mixed in proportion when needed during the operation, and are injected into cracks for repair with the assistance of a manipulator. The operation mode is simple and the timeliness is good.

The invention discloses a safe cabin opening construction method for a shield tunneling machine. The method comprises the steps that S1, geological prejudgment is conducted on a target position, and selection judgment is conducted on cabin opening points; s2, composite grouting stratum reinforcement: S21, first-stage double-liquid grouting: cement paste and water glass are mixed according to the volume ratio of 2: 1; the grouting pressure is 1.2-1.5 MPa, the single-hole grouting amount is larger than or equal to 1.5 m < 3 >, and the diffusion radius is larger than or equal to 1.5 m; s22, second-stage chemical grouting is conducted, wherein nano-silicon dioxide slurry is adopted; s3, a mud film protecting wall is constructed, wherein the doping amount of sodium bentonite is 6-10%, and the dynamic adjusting range of slurry viscosity is 80-120 s; the initial pressure is 1.6 bar, the pressure of each stage is 0.2 bar, and the final pressure is 1.2-1.5 times of the design pressure; the pressure stabilizing time is not less than 6 hours, and the pressure drop rate is not more than 0.03 bar / h; s4, under-pressure warehouse entering operation is conducted, wherein the working pressure is set to be P = P water pressure + 0.2 bar, and the fluctuation range is smaller than or equal to + / -0.03 bar; a six-degree-of-freedom mechanical arm is adopted to plan a path, so that the obstacle avoidance distance is larger than or equal to 50 mm; and S5, setting an alarm system. The construction safety can be remarkably improved, and the bin opening accident rate is reduced.

The invention discloses a coal mine tunnel slurry conveying hole well cementation process which comprises the following steps: firstly, in a to-be-well-cementation area of a coal mine tunnel, performing all-directional flushing on a slurry conveying hole by using a high-pressure water jet device to remove rock debris and coal cinder on a hole wall, performing preliminary roughening treatment on the hole wall, and performing well cementation in the pretreated slurry conveying hole, a chemical grouting method is adopted to inject a composite grouting material containing nano silica sol and acrylate emulsion, cement, fly ash, silica fume, a water reducing agent, an early strength agent and water are mixed and stirred according to a certain proportion to prepare well cementation slurry, and the prepared well cementation slurry is injected into a slurry conveying hole subjected to hole wall reinforcement and anti-seepage treatment through a grouting pump. In a word, according to the method, the well cementation quality and stability of the slurry conveying hole of the coal mine roadway are remarkably improved through multi-link fine operation, and the method has the advantages of being high in construction efficiency, full in resource utilization, high in adaptability and convenient to maintain.

The invention discloses a construction method of an underground coal gasification separation wall in-situ grouting water blocking system, and relates to the technical field of underground coal gasification separation. According to the method, a three-dimensional three-level three-layer grouting isolation system is formed through six steps of monitoring deployment, biological barrier construction, initial physical grouting isolation before gasification, chemical grouting barrier construction before gasification, dynamic physical grouting isolation in gasification and final physical grouting isolation after gasification by integrating physical, chemical and biological triple isolation means. Meanwhile, by combining real-time monitoring and cloud intelligent regulation and control, efficient isolation and plugging in the whole process of underground coal gasification are achieved, pollutants are effectively prevented from migrating to pollute underground water, geological stability is guaranteed, and environmental safety guarantee is provided for industrialization of underground coal gasification.

The present application relates to the technical field of municipal water supply and drainage engineering, and especially relates to a water supply supporting operation pool uninterrupted water opening access construction method, which constructs a steel cofferdam caisson composed of a water isolation caisson and a pushing fixing device, actively isolates local water pressure to form a dry operation environment, completes accurate opening of a pool wall, additional steel reinforcement, installation of a wall sleeve and secondary pouring of C40 self-compacting concrete in the caisson, realizes multiple sealing by combining three BW water-swelling sealing strips, water intercepting rings and epoxy resin chemical grouting, and pours water balance pressure and removes the caisson as a whole after construction is completed. The present application solves or at least alleviates problems such as water supply interruption, water quality disturbance and approval difficulty caused by traditional water interruption opening construction, and provides a water supply supporting operation pool uninterrupted water opening access construction method.

This invention discloses a method for unidirectional sealing of karst cavities in underground reservoirs using chemical grouting. The method includes steps such as engineering layout and drilling, chemical grouting, and cement grouting. Two parallel rows of grouting holes are set up, one for cement grouting and one for chemical grouting. Drilling is performed according to requirements, with chemical grouting carried out first. Cement grouting can only proceed after the chemical grouting curtain is completed and inspected. Simultaneously, conventional cement grout and unconventional chemical grout are used in combination, leveraging the advantages of both. Cement grouting is used to seal the curtain line and downstream karst cavities along the curtain axis to obtain a higher-strength anti-seepage curtain, achieving the goal of unidirectional sealing of underground karst cavities. This invention has the advantages of ensuring unobstructed upstream water flow, high overall strength of the curtain, and good anti-seepage effect.

The application discloses a kind of pre-embedded pipe earth-rock dam cutoff wall structure and defect detection and repair method, "U-shaped" flower pipe is pre-embedded in cutoff wall and is evenly arranged along cutoff wall axis, and flower pipe is filled with colored dye agent;Through dam body seepage pressure monitoring, colored dye agent migrates with seepage and dam downstream water weir seepage flow changes, the position and nature of earth-rock dam seepage can be preliminarily evaluated;Using the "U-shaped" pre-embedded flower pipe in concrete cutoff wall, the defect of cutoff wall can be detected by pre-embedded flower pipe seepage flow detection, pre-embedded flower pipe seepage digital imaging and pre-embedded flower pipe water pressure test;After accurately detecting the defect of cutoff wall, the grouting repair method in cutoff wall pre-embedded pipe uses pre-embedded "U-shaped" flower pipe to carry out local chemical grouting, low disturbance and high efficiency, realize the accurate repair of seepage cutoff wall.

The invention belongs to the technical field of geotechnical engineering, and discloses a method for mineralizing and reinforcing a high-filled soil body by using nanogel and microorganisms, which comprises the following steps: carrying out multiplication culture and activation on bacillus, preparing response gel, sequentially mixing a NaHCO3 buffer solution, activated bacillus, nanoclay-chitosan composite sol, response gel and a cementing solution into the soil body, and carrying out layered compaction. And the soil body is compacted and reinforced. The technical problems that according to an existing chemical grouting method, due to the fact that the controllability of a mineral deposition space is poor, pore throats are prone to being blocked, drainage is affected, and monomer migration pollutes the environment are solved.

The invention discloses a water gushing treatment method for a tunnel adit, and aims to solve the technical problems that drainage of the tunnel adit is difficult and potential safety hazards exist in a complex strong water gushing environment. Advanced geological forecast is carried out on the tunnel face of the adit by adopting a geophysical prospecting method in combination with a horizontal advanced hole exploration mode, and the geological forecast precision of the unexcavated water-rich section of the adit is improved; through the graded relay drainage system, the technical problem that water burst in the adit moves along with the tunnel face of the adit and is not pumped and drained in time is solved; through the cooperative water blocking structure of advanced fixed-point grouting, system grouting and chemical grouting and in cooperation with a drainage system, groundwater exposure of the water-rich section of the adit is restrained, the current situation that a water curtain hole of the water-rich section of the adit is excavated is effectively improved, and the construction safety coefficient is greatly increased.

A construction method for reinforcing by additionally arranging a steel lining without changing the size of the section of a hydraulic tunnel comprises the steps that the size of the interior of lining concrete of an original tunnel is measured, and a lining steel plate and an annular positioning ring are machined; concrete is chiseled away, and an annular positioning ring is installed and fixed through a chemical anchor bolt; after the bottom of the annular positioning ring is closed and reinforced, the concrete surface is treated with the annular positioning ring as a sample frame; then, lining steel plates are mounted from bottom to top in a fragmented mode and are subjected to spot welding and full welding with the annular positioning ring; chemical grouting is carried out every time one pipe joint is installed; and the longitudinal positioning block is welded before the subsequent pipe joint is mounted. Compared with traditional crack grouting and surface treatment, the lining steel plate is additionally arranged under the condition that the size of the section of the hydraulic tunnel is not changed, the tunnel structure is effectively reinforced while the integrity of the tunnel structure is kept, the problems of hydraulic tunnel diseases such as leakage and strength are effectively solved, the construction effect is effective for a long time, and the construction cost is reduced. And the repeatability of a traditional processing method can be effectively avoided.

The invention discloses a karst development area deepwater bare rock low-pile cofferdam platform and a construction method thereof.The cofferdam platform comprises pile foundations, pier columns, a cofferdam body and multiple layers of inner supporting assemblies, the pile foundations comprise pile columns, reinforced concrete cushion layers and bearing platforms, the cofferdam body is formed by splicing a plurality of lock catch steel pipe piles, the lower end of each lock catch steel pipe pile extends into a guide hole groove, and the lower end of each lock catch steel pipe pile extends into the guide hole groove; the groove wall of the hole guiding groove and the cofferdam are sealed through a sand layer. Each layer of inner supporting assembly comprises a plurality of enclosing purlins, a plurality of brackets and a plurality of steel columns, each enclosing purlin is installed on the inner wall of the cofferdam through the corresponding bracket, and each end of each steel column is fixedly installed on the corresponding enclosing purlin; the reinforced concrete cushion layer comprises a concrete structure and a plurality of reinforcement cages, and the end, close to the cofferdam, of each reinforcement cage is welded to a lock catch steel pipe pile of the cofferdam. The lock catch steel pipe pile can be installed rapidly and accurately, the sand layer formed by chemical grouting into the sand grains can enhance the overall sealing performance of the cofferdam, and meanwhile the bare rock excavation amount can be reduced through the reinforced concrete cushion layer.

The utility model discloses a pesticide grouting pipe for termite control, which belongs to the technical field of termite control and comprises a pipe body component, a conical head component is mounted below the pipe body component, a positioning disc component is mounted on the outer side of the pipe body component, and a bifurcated pipe component is mounted on one side of the pipe body component and positioned above the positioning disc component. An air pump assembly is installed above the pipe body assembly, and a storage stirring device is installed on the side, away from the pipe body assembly, of the bifurcated pipe assembly; the storage stirring device is arranged, so that a worker can store standby medicine through cooperation of a storage barrel, a lifting barrel and other structures when needed, and therefore the work requirements under different conditions are better met; and a worker can stir part of medicines which are not sufficiently mixed and dissolved through cooperation of a motor, a stirring blade and other structures when needed, and then the working capacity of the grouting pipe is improved.