50results about How to "Improve grouting effect" patented technology

The invention discloses a self-adaptive control method for underground coal mine hole sealing and grouting, and belongs to the technical field of well hole packing. The method comprises the steps that plugging bags are sequentially installed at the cross sections of two drill holes of an underground coal mine working face, compressed air is injected into the plugging bags, and a cylindrical space between the bags is filled with multi-stage coal powder distribution materials in a layered mode and compacted; mixing ordinary Portland cement, a composite expanding agent, a carboxyl water reducer, a hydroxypropyl methyl cellulose stabilizer and water according to a preset ratio, and screening; stepwise pressure injection is implemented, and the grouting pressure and rate are regulated and controlled in a variable-rate climbing mode, a constant-pressure variable-speed mode and a proportional attenuation mode; and constant-temperature and constant-humidity maintenance is conducted on the grouting completion area, so that the desorption value of the drilling cuttings is reduced to a target value. According to the scheme, the grouting process parameters can be optimized, and the grouting quality is improved.

The invention relates to the technical field of anchor rods, and discloses a recoverable anchor rod and a construction technology thereof.The recoverable anchor rod comprises a bearing seat capable of being placed in an anchor hole; the anchor bar is in threaded connection with the bearing seat; the abutting seat is arranged on the anchor bar in a sleeving mode and used for abutting against an anchored structure; the locking cap is in threaded connection with the end, away from the bearing seat, of the anchor bar and used for abutting against the side, away from the anchored structure, of the abutting seat; the casing pipe is arranged on the outer wall of the anchor bar in a sleeving mode and clamped between the bearing base and the abutting base at the same time; the drill bits move in the bearing seat in the radial direction of the bearing seat, and the multiple drill bits are arranged in the circumferential direction of the bearing seat at intervals; and the linkage piece is arranged on the anchor bar and located in the bearing seat so as to drive the drill bit to move out of the bearing seat to drill into the inner wall of the anchor hole when the anchor bar moves in the bearing seat in a threaded mode. The grouting effect can be improved.

The invention discloses an underground engineering intelligent grouting method based on an improved discrete fracture network model. The underground engineering intelligent grouting method is characterized by comprising the following steps: 1) early-stage preparation and rock mass fracture data collection; 2) on the basis of a matrix joint model algorithm, constructing a discrete fracture network model through rock mass fracture data; 3) intelligent optimization of grouting parameters is carried out based on a multi-target particle swarm optimization algorithm; (4) grouting operation is carried out; and 5) effect evaluation and long-term monitoring. According to the underground engineering intelligent grouting method and system based on the improved discrete fracture network model, accurate control and long-term monitoring of the grouting process are achieved by combining the advanced modeling technology, the artificial intelligence algorithm and the Internet of Things technology. According to the method, the grouting effect is improved, resource consumption and environmental influence are remarkably reduced, and an innovative solution is provided for rock mass reinforcement and anti-seepage treatment of important projects such as water conservancy and hydropower, tunnels and the like.

The invention relates to a mechanical device for grouting and a grouting method. Comprising a grouting vehicle, a mechanical arm base, a driver, a mechanical arm arranged between the mechanical arm base and the driver, and a drilling and grouting integrated grouting device arranged at the tail end of the driver. The grouting device comprises a plurality of grouting pipes and water pumping pipes, each water pumping pipe is provided with a power device, and simultaneous grouting and water pumping are achieved through the grouting pipes and the water pumping pipes; the grouting vehicle is provided with a slurry stirrer and conveys slurry to the driver and the grouting pipe through a slurry conveying pipe, and grouting is achieved. And the grouting device and the mechanical arm can be folded and stored in the grouting vehicle. The device can be rotated and adjusted in multiple directions to reach a target grouting position, the number of the branch pipe supports and the number of the water pumping pipes can be selected according to the state of a grouting stratum and surrounding rock, and the device is convenient to disassemble and convenient to transport and construct; the underground water level is reduced through mutual cooperation of the water pumping pipe and the grouting pipe so that the slurry retention rate can be increased, grouting slurry can be diffused more evenly, and the expected grouting effect is achieved.

The present invention discloses a mobile automatic grouting fire prevention and extinguishing equipment for coal mines. The grouting equipment includes a feeding system, a water supply system, a slurry making system, a pumping system, a control system, and a mobile assembly. First, the feeding system and the water supply system transport loess and clean water respectively, and are provided with a vibration feeding function to accelerate the loess transportation; secondly, the control system monitors and controls the material transportation volume of each system in real time, and adjusts the water-soil ratio of the slurry; thirdly, the slurry making system continuously stirs, mixes and filters the slurry; then, the pumping system uses a plunger pump to pressurize and pump the slurry to the grouting point, and a reducing flange is provided to change the diameter of the slurry delivery pipeline, reduce pipeline wear, and increase the grouting pressure; finally, the system is integrated into a skid-mounted shell and is moved to the grouting site for operation using a trailer. The present invention has a clear structure, is safe and reliable, and realizes large-flow mobile automatic grouting through system design, improves the grouting efficiency, and avoids the problems of excessively high pipeline laying costs and insufficient grouting pressure during long-distance grouting.

The utility model provides a soil nail steel sheet pile composite supporting device suitable for a deep foundation pit. The soil nail steel sheet pile composite supporting device comprises a steel sheet pile assembly; the sleeve is arranged on one side of the steel sheet pile assembly; the soil nail assembly is arranged in the casing pipe; the gasket is arranged on the outer side face of the soil nail assembly in a sleeving mode; the nut is in threaded connection with the outer side face of the soil nail assembly. According to the soil nail steel sheet pile composite supporting device suitable for the deep foundation pit, the installation ring, the connecting ring, the installation frame, the sliding rod, the spring, the baffle, the check ring, the penetrating groove and other structures are matched with one another, after grouting is completed, elasticity of the spring can push the baffle, and therefore the baffle blocks the penetrating groove, and the soil nail steel sheet pile composite supporting device is convenient to use. In this way, slurry entering the soil nail assembly can be prevented from flowing out, and the grouting effect of the soil nail assembly is improved.

The utility model provides a grouting device for mine support, which comprises a grouting pipe, one side of the grouting pipe is provided with a vibration pipe with two ends plugged, a rotating shaft is arranged in the vibration pipe, one end of the rotating shaft is connected with a transmission rod, one end of the transmission rod far away from the rotating shaft is hinged with a vibration rod, and the other end of the transmission rod far away from the rotating shaft is hinged with the vibration rod. The end, away from the transmission rod, of the rotating shaft is connected with a motor used for driving the rotating shaft to rotate. The motor is fixed to the inner wall of the vibration pipe. The vibration pipe is arranged on one side of the grouting pipe, the vibration pipe and the grouting pipe can be directly placed into a grouting hole together during grouting, vibration can be carried out in time after grouting, a vibration device does not need to be placed after the grouting pipe is taken out, convenience and rapidness are achieved, and efficiency is improved; compared with the mode that a vibration device is inserted into a grouting hole after grouting, it can be ensured that the vibration pipe is placed in a proper position, the vibration effect is good, and the grouting effect is effectively improved.

The application belongs to the technical field of tunnel and underground engineering disaster prevention and control, and particularly relates to a cement-polyurethane composite grouting material suitable for dense soft rock reinforcement and a preparation method thereof. The composite grouting material is mainly formed by mixing a penetration cross-linking liquid and a grout vein skeleton liquid. The penetration cross-linking liquid is formed by mixing a grouting material A component and a grouting material B component. A semi-prepolymer is obtained by pre-polymerization reaction of a polyisocyanate and a polyether polyol, and then a diluent and a catalyst are added to the semi-prepolymer to obtain the grouting material A component; a surfactant, a retarder and water are mixed to obtain the grouting material B component; and cement and water are uniformly mixed in a certain proportion to obtain the grout vein skeleton liquid. The cement-polyurethane composite grouting material and the preparation method thereof can achieve penetration-splitting composite reinforcement effect when grouting in a dense soft rock poor geological section with strong density and poor permeability, and the grout preparation process and grouting operation steps are more simple and efficient.

The invention discloses a mine-use elevation drilling grouting and water-discharging pressure measuring casing, comprising an outer casing, an inner casing, a grouting port, a negative pressure port, a negative pressure pipe, a limiting column, a double-layer flange, a pressure gauge, a control pipe, a high-pressure gate valve, a ball valve, and a water outlet; an outer casing is provided on the outside of the inner casing, and the outer casing and the inner casing are provided with a negative pressure pipe and a limiting column; a grouting port and a negative pressure port are provided on the outside of the outer casing, and the grouting port runs through the side wall of the outer casing; the negative pressure port passes through the side wall of the outer casing and is connected with the negative pressure pipe; a negative pressure pipe and two limiting columns are installed in the gap between the outer casing and the inner casing, and the negative pressure pipe and the two limiting columns are arranged in a circular matrix along the outside of the inner casing; a positioning groove is provided on the outer surface of the inner casing, and three positioning grooves are arranged in a matrix along the outer surface of the inner casing. The invention has the characteristics of easy grouting, ensuring the straightness of the casing, good grouting effect, and flexible conversion of waterproofing and pressure measurement.

The present invention provides a portable rock and soil cultural relic grouting and sealing device, comprising: a casing, a liquid inlet is arranged on the casing, a slurry containing chamber is arranged inside the casing, and the liquid inlet is communicated with the slurry containing chamber; a power system; a screw pump, the screw pump is arranged in front of the slurry containing chamber, and the screw pump is driven by the power system; a fixed sleeve, the fixed sleeve is arranged in front of the screw pump; a telescopic sleeve, the telescopic sleeve is arranged in the fixed sleeve, and a stop matching structure is arranged between the telescopic sleeve and the fixed sleeve; a spring, the spring is arranged inside the fixed sleeve; a controller, the controller is arranged on the outer wall of the fixed sleeve, the control end of the controller is fixedly connected with the telescopic sleeve, and the control signal of the controller is output to the power system, so as to control the power size of the output end of the power system through the telescopic control of the telescopic sleeve. The device saves time and labor, can realize accurate seam sealing, has a wide range of applications, improves work efficiency and grouting effect, and is easy to operate.

The present invention relates to the technical field of tunnel construction, and in particular to a tunnel lining vault grouting device with a mold, comprising a walking mechanism, a slurry making mechanism, a slurry storage mechanism, a grouting mechanism and a control mechanism, wherein the walking mechanism comprises a walking trolley and a pull rod, and the slurry making mechanism, the slurry storage mechanism, the grouting mechanism and the control mechanism are all arranged on the walking trolley, the slurry making mechanism comprises a slurry making barrel, a stirring component 1 is arranged in the slurry making barrel, a dredging component is arranged on the outer side of the slurry making barrel, the slurry storage mechanism comprises a slurry storage barrel, the slurry storage barrel is connected to the slurry making barrel through a slurry delivery pipe 1, a stirring component 2 is arranged in the slurry storage barrel, the grouting mechanism comprises a grouting pump, the grouting pump is connected to the slurry storage barrel through a slurry delivery pipe 2, and a slurry outlet pipe is also connected to the grouting pump. The present invention adopts the above-mentioned tunnel lining vault grouting device with a mold, and the grouting device has a simple structure, occupies a small space, is easy to operate, has high working efficiency, and has a good grouting effect.

The present invention provides a forming process of a double-layer grouting pulp molded product, which belongs to the field of pulp molded products. The specific steps of the forming process of the double-layer grouting pulp molded product are collecting waste materials, crushing waste materials, pulping, mixing slurry, grouting, drying, and hot pressing. The present invention provides a reasonable forming process, by drying the material after the first grouting during the processing, and then performing the secondary grouting, it is convenient to improve the grouting effect of the secondary grouting during use, and it is convenient to improve the quality of pulp molding. In the process of pulping, by weighing the auxiliary materials, and then injecting the weighed materials into the interior of the pulping equipment, it is convenient to process the pulp of the first grouting and the second grouting separately during use, and it is convenient to perform ratio control during the processing.

The utility model discloses a deep foundation pit grouting device and relates to the technical field of building construction equipment, the deep foundation pit grouting device comprises a base, a material storage box and a grouting pipe, the material storage box is fixedly installed on one side of the top of the base, a feeding port is fixedly installed at one end of the material storage box, telescopic rods are fixedly installed at the two ends of the surface of one side of the base, and the telescopic rods are fixedly connected with the grouting pipe. Two telescopic rods are fixedly installed on one side of the top of the base, a supporting plate is fixedly installed at the moving ends of the two telescopic rods, fixing plates are fixedly installed at the two ends of the top surface of the supporting plate, a rotating shaft is rotationally arranged between the two fixing plates, a grouting pipe is wound around the surface of the rotating shaft, and a grouting pump is fixedly installed on the other side of the top of the base. Through the arrangement of the rotating shaft, the telescopic rod and the supporting plate, the position of the grouting pipe can be accurately fixed, the problem that the grouting pipe is difficult to position is effectively solved, the uniformity and accuracy of grouting are guaranteed, and the stability of a deep foundation pit is improved.

The invention discloses a self-expansion prestressed grouting material and a preparation method thereof. The grouting material comprises the following components in parts by mass: 12-15 parts of a self-stress active material, 1-2 parts of an antioxidant, 1-2 parts of an interface stabilizer, 1-2 parts of a crystallization accelerant, 1-3 parts of a coagulant, 3-5 parts of a reinforcing agent and 100-120 parts of a cementing material. By introducing the self-stress active material into the grouting material, the compressive strength, tensile strength, durability, shock resistance and toughness resistance of the grouting material can be effectively improved, the grouting effect is improved, and the grouting material is simple in preparation process, low in cost and easy to popularize and use.

The invention provides a tunnel grouting device and a using method thereof, and belongs to the technical field of tunnel grouting, the tunnel grouting device comprises a movable shell, a mounting plate, a lead screw nut and a pushing plate, and a moving groove is formed in the upper end of the movable shell; the two mounting plates are fixedly connected to the two ends of the movable shell respectively, one end of one mounting plate is fixedly connected with a motor, the output end of the motor is fixedly connected with one end of a lead screw, and the lead screw is rotationally connected between the two mounting plates; the lead screw nut is in threaded connection with the circumferential surface of the lead screw; the pushing plate is fixedly connected to the lower end of the lead screw nut. When a tunnel needs to be subjected to grouting treatment, the spiral precession mechanism is aligned with a to-be-drilled part, the motor is started to drive the lead screw to rotate, then the lead screw nut drives the pushing plate to move, grouting liquid in the movable shell is pushed leftwards, meanwhile, the spiral precession mechanism is driven to operate, and the drilling part is drilled through the mechanism; and after drilling is completed, grouting treatment is conducted on the interior of the hole, and drilling and grouting integration is achieved.

The pump grouting anchoring hollow grouting anchor cable comprises an anchor cable body, a grout stopping plug, a grout outlet birdcage, a grouting pipe, an anchoring pipe and a blocking pipe, the anchor cable body is of a hollow structure with the two ends open, the grout stopping plug and the grout outlet birdcage are arranged on the peripheral face of the anchor cable body in a spaced mode, the grouting pipe is communicated with the grout outlet birdcage, and the blocking pipe is communicated with the grouting pipe. The top end of the anchoring pipe extends into the grouting pipe and is located between the top end of the grouting pipe and the grout outlet birdcage, the tail end of the anchoring pipe is located outside the grouting pipe, the anchoring pipe can move in the axial direction of the grouting pipe, and the blocking pipe is fixedly arranged in the grouting pipe. According to the pump grouting anchoring hollow grouting anchor cable, the grouting pipe and the anchoring pipe are responsible for grouting and anchoring respectively, grouting and anchoring are independently carried out, blocking of solid particles in grout to a channel is effectively reduced, the grouting effect is improved, the anchor cable is easier and more convenient to install and operate, the construction difficulty is reduced, and the construction efficiency is improved.

The utility model relates to the technical field of bean curd production, and disclose a kind of suction equipment for bean curd production, including bearing table, the lower end of bearing table is fixedly arranged with support bottom mat, and one end of bearing table is fixedly arranged with anti-collision strip, and the upper end of bearing table is fixedly arranged with suction treatment box, and the upper end of suction treatment box is fixedly arranged with extension frame, and the inside of extension frame is fixedly arranged with storage tank, and one end of storage tank is movably arranged with movable disc, and one end of movable disc is fixedly arranged with movable vane.The suction equipment for bean curd production, by the improvement of production suction equipment, the suction treatment and grouting capacity of the production suction equipment are improved, in the actual use process of the production suction equipment, the bean curd raw materials can be suction filtered according to the needs, the bean curd raw materials are conveniently grouted, and the bean curd production effect of the suction equipment for bean curd production is improved.

The present application relates to rock mass supporting technical field, provide a kind of integrated anchor cable for soft disintegrating rock mass and construction method, integrated anchor cable includes anchor cable, grouting pipe, expansion capsule, anchor cable tensioning lock, tray and aligning ball pad, anchor cable includes anchor cable exposed section, anchor cable tensioning section and anchor cable anchoring section in turn;The import of grouting pipe is set at anchor cable exposed section, the outlet of grouting pipe is set at the junction position of anchor cable tensioning section and anchor cable anchoring section;Expansion capsule is wrapped in the local cable section of anchor cable tensioning section, local cable section corresponds to the orifice position of drilling, expansion capsule is connected with grouting pipe, and expansion capsule expands under the grouting pressure of grouting pipe.By waterproof anchoring agent, anchor cable anchoring section is fixed with the hole wall of drilling, and the orifice of drilling is sealed by expansion capsule, avoid the leakage of slurry along the orifice position of drilling, can realize good tensioning effect and grouting effect, can provide good supporting capacity for soft disintegrating rock mass.

An end-type automatic grouting device includes an equipment base, on which a servo motor, a grouting device and a grouting pipe are arranged, the servo motor is connected to the grouting device, one end of the grouting pipe is connected to the grouting device, a grouting feeder with an upward opening is arranged on the grouting pipe, and the other end of the grouting pipe is connected to a grouting inlet of a grouting mold, and a grouting guide plate and a plurality of evenly arranged honeycomb ceramic carriers are arranged in the grouting mold. The grouting device directly grouts from the end of the honeycomb ceramic carrier, thereby enhancing the grouting effect, and the entire grouting process is not easy to overflow, and multiple honeycomb ceramic carriers can be effectively spliced ​​together.

The invention relates to the technical field of underground engineering surrounding rock stability control, and discloses a self-adaptive grouting system and method for deep surrounding rock stability control, the self-adaptive grouting system comprises a grouting execution module, the grouting execution module comprises a grouting pipe, a grouting pump and a grouting parameter acquisition assembly, the grouting pipe is used for going deep into a preset position of a deep surrounding rock, and the grouting pump is used for collecting grouting parameters of the deep surrounding rock; the grouting pump provides power for slurry conveying, and the grouting parameter collecting assembly collects pressure data and flow data in the grouting process in real time; the multi-parameter monitoring module comprises a stress monitoring assembly, a displacement monitoring assembly and a crack monitoring assembly, and the stress monitoring assembly is used for collecting stress values at different depths of the surrounding rock. Stress, displacement and crack data of surrounding rock are collected in real time through the multi-parameter monitoring module, the stability level is determined by combining analysis and operation of the data processing module, grouting parameters are dynamically generated and adjusted through the control module, and accurate matching of grouting operation and the state of the surrounding rock is achieved.

The utility model provides a kind of grouting anchor rod for water conservancy and hydropower engineering foundation reinforcement construction, grouting anchor rod body 1 is overall cylindrical, the inside of grouting anchor rod body 1 is interval and provided with pressurized cheek 2, grouting pressurized rod 4 is fixedly installed in the inside of pressurized cheek 2 in penetrating mode;The inside of grouting anchor rod body 1 is interval and provided with multiple guide columns 3, the inside of grouting anchor rod body 1 is provided with a grouting pressurized rod 4, grouting pressurized rod 4 is fixedly installed in the inside of multiple guide columns 3 in penetrating mode, grouting pressurized rod 4 is also fixedly installed in the inside of pressurized cheek 2 in penetrating mode.Numerical simulation result shows that, using the grouting anchor rod of the utility model can effectively grout and fill up fine crack, and the rated pressure of hydraulic cylinder is greater than the rated grouting pressure of grouting pump, can produce certain pulse effect, reduce the non-uniformity of slurry, greatly improve the effect of grouting.

The present invention provides a device and method for simulating multi-angle visual anchor reinforcement of water-fractured rock mass fissures, which comprises a box body, the box body is supported on the top of an adjustment device for adjusting its support angle, the interior of the box body is filled with broken rocks through a stress applying device; a camera is arranged on the inner top of the box body; the side wall of the box body is connected to the water injection device through a water injection conduit; a flow meter is installed on the water injection conduit. The problem of insufficient rock mass reinforcement strength caused by insufficient water vapor and air expulsion during grouting in the project is solved. The materials used in this method are easy to obtain, and the operation during construction is very simple, which has broad engineering practice significance and application prospects.

The present invention relates to the technical field of construction building materials, and in particular to a solid waste foundation surrounding rock reinforcement grouting material and a preparation method thereof. Industrial solid waste is modified and ground to prepare low-carbon active powder, which is combined with kaolin as a cementitious material. By adjusting the variety of admixtures, a grouting reinforcement material with good mechanical properties, high solidity rate and low cost is prepared.

The invention relates to an anti-slurry-leakage grouting method for a coal seam roadway bottom plate, and relates to the technical field of coal mine bottom plate water disaster prevention and control. In the horizontal directional drilling and grouting process for ground area treatment, the anti-grout-leakage grouting method is used for conducting grouting reinforcement and transformation on the coal seam bottom plate, the grout leakage condition of the roadway bottom plate in the grouting process is rapidly treated through the quantitative intermittent grouting technology for adjusting the grouting amount, the grouting interval and the grout ratio, and the grouting efficiency is improved. And meanwhile, stratum reinforcement and grout runout channel plugging are both considered, normal production of a mine is not affected, manpower and material resources are saved, and grouting materials are saved.

The invention relates to the technical field of anchor cable structures, and discloses an ultrahigh-pressure grouting anchor cable structure which comprises an anchor cable, a primary grouting pipe and a secondary grouting pipe for ultrahigh-pressure supplementary grouting, and the withstand pressure value of the secondary grouting pipe is not lower than 30 MPa; the secondary grouting pipe is provided with a closed end, the closed end is provided with an inner end opening which is arranged in a closed mode, and the outer end of the secondary grouting pipe is provided with a check valve which limits grout from flowing back outwards. The secondary grouting pipe is provided with an inner section, a plurality of grouting holes are formed in the inner section, and the grouting holes are covered with the elastic structures. When the grouting pressure is larger than a set pressure value, the elastic structure elastically deforms outwards, and the grouting hole is in an open state; when the grouting pressure is smaller than a set pressure value, the elastic structure seals the grouting hole, and the grouting hole is in a closed state; the ultrahigh pressure grouting is achieved, the grouting effect is good, the check valve limits grout backflow, the elastic opening or closing state of the grouting hole is achieved through the elastic structure, and the grouting effect can be better improved.

The invention discloses an auxiliary device for anchor rod grouting and a construction method of the auxiliary device, and relates to the field of anchor rod grouting. The transparent hard pipe is wound on the anchor rod, the cap with the hole is arranged at the inner end of the transparent hard pipe, the control ball valve and the vacuum pump are sequentially connected to the outer end of the transparent hard pipe, and the two trays and the fastening nut are sequentially arranged at the outer end of the anchor rod in a sleeving mode. The grouting joint is arranged on the two trays in a penetrating manner; the grouting joint control valve is connected with the grouting joint; a round hole and two oval holes are formed in the tray, the outer end of the transparent hard pipe penetrates out of the tray through the round hole, and the two oval holes are used for allowing the grouting connector to penetrate into the tray. The grouting connector comprises a first connector pipe and two second connector pipes which are communicated with each other, and the two second connector pipes are connected with the two oval holes in the tray in a matched mode respectively. The transparent hard pipe is wound on the anchor rod, it can be guaranteed that the anchor rod is centered and positioned in an anchor hole, and it is guaranteed that a finally-formed mortar protection layer is uniform and effective.

The present invention discloses a method for tunnel grouting based on numerical simulation of fault fracture zone, including: obtaining geological data of the tunnel construction section; predicting the geological conditions in front of the tunnel face in the tunnel construction section based on the advanced geological prediction method to obtain the prediction results of the geological conditions in front of the tunnel face; inputting the geological data and the prediction results of the geological conditions in front of the tunnel face into a pre-trained three-dimensional numerical model of the fault fracture zone to obtain the prediction results of the fault fracture zone; determining the tunnel construction grouting scheme based on the fault fracture zone prediction results; and completing the grouting of the tunnel construction section based on the tunnel construction grouting scheme. By accurately predicting the fault fracture zone of the tunnel, the geological conditions and problems that may be encountered during construction can be simulated, which is helpful to formulate a reasonable and effective grouting scheme.

The utility model discloses a building construction device technical field's grouting pipe with separator, including grouting pipe body and set up on grouting pipe body's separator, and the separator includes the connecting pipe, the top pipe of setting in the connecting pipe inside upper side and the bottom pipe of setting in the connecting pipe inside lower side, and the top pipe and bottom pipe are opposite and connect respectively in the connecting pipe and use small piece geomembrane bag plugging, and the top pipe, bottom pipe and the connecting pipe's joint place respectively pass through welding fixed, and the part of top pipe and the connecting pipe outside is provided with grouting hole, and grouting hole surface is equipped with geomembrane bag, and the end of top pipe and bottom pipe outside the connecting pipe is the threaded section for connecting. The utility model discloses work through connecting separator on grouting pipe body, and the grouting hole on separator makes slurry into the effect of forming the section of grouting pipe outside, and the grouting hole on grouting pipe body makes slurry into the effect of forming the section of grouting pipe inside, through this device, can realize the effect of inside and outside section of grouting pipe simultaneously, improve the effect and quality of grouting.

The application relates to the technical field of pile foundation construction, in particular to a bored pile post-grouting construction process, which comprises the following steps: S1, a preparation stage: determining the type, proportion and preparation method of grouting material, preparing grouting equipment and performing necessary preparation work on a construction site; S2, grouting hole treatment: firstly, the reserved grouting hole needs to be cleaned and treated to ensure the permeability and sealing property of the hole; S3, grouting equipment setting: installing the grouting equipment; S4, grouting injection: prefabricated cement slurry or other grouting material is injected into the pile or the soil layer around the pile through the grouting pipeline until the filling reaches the position required by the design; S5, grouting slurry solidification: waiting for the grouting slurry to be fully solidified to form an integrated structure which is well combined with the pile body and the surrounding soil body. The application has the effect of improving the bearing capacity of the pile foundation.

The present invention provides a hollow pile end screw-out grouting device and a grouting method, wherein a pile bottom sealing structure is fixedly installed at the bottom of the hollow pile, a hole is axially penetrated through the pile bottom sealing structure, and a screw-out grouting device is threadedly installed in the hole; the top of the screw-out grouting device is used to connect with the grouting pipe in the hollow pile, a grouting channel is provided in the screw-out grouting device, a grouting inlet is provided at the top of the screw-out grouting device for conducting the grouting pipe and the grouting channel, and a grouting hole is provided on the side wall at the bottom of the screw-out grouting device and connected to the grouting channel. The movable grouting pipe is used as a grouting tool and can be reused. At the same time, the movable grouting pipe is also used as a driving component for driving the screw-out grouting device to penetrate into the soil layer. It has multiple uses and does not need to use other tools to move the screw-out grouting device downward, thereby improving the grouting efficiency.