27results about How to "Improve grout quality" 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 utility model relates to the technical field of building construction, and discloses an assembly type concrete member grouting sleeve connecting device which comprises a grouting sleeve body, a slurry discharging pipe is fixedly installed on one side of the upper end of the grouting sleeve body, a grouting pipe is fixedly installed on one side of the lower end of the grouting sleeve body, and the grouting pipe is connected with the grouting sleeve body. And the grouting pipe and the slurry discharging pipe are equal in size, and threaded steel bars are symmetrically installed in the grouting sleeve body up and down. Due to the arrangement of the grouting sleeve body, the twisted steel bars, the positioning assembly and the like, when the two twisted steel bars in the grouting sleeve are in butt joint, the steel bars of the full grouting sleeve can be accurately, simply, efficiently and conveniently connected through the positioning assembly, the butt joint position of the two twisted steel bars is prevented from deviating during grouting, and the grouting quality is improved. The stability of a butt joint position is influenced, so that the grouting quality is improved.

The invention relates to the technical field of node grouting construction, in particular to an assembly building connection node grouting construction machine and method, the assembly building connection node grouting construction machine comprises a grouting pipe and a feeding valve, and the feeding valve is arranged on the upper portion of the outer side wall of the grouting pipe in a communicating mode; the rotating shaft is installed in the grouting pipe through the driving device, the driving device is used for driving the rotating shaft to rotate and move up and down, the spiral blade is installed on the outer side wall of the rotating shaft, and the top end of the vibration rod is installed at the bottom end of the rotating shaft through the adjusting device; the adjusting device is used for driving the vibration rod to swing and adjust, a vibration device is arranged in the vibration rod and used for driving the vibration rod to vibrate, and the scraper is installed on the outer side wall of the rotating shaft. According to the vibrating device, a vibrating rod vibrates different positions of mortar, the vibrating effect is improved, the grouting quality is improved, the discharging smoothness of the mortar is improved, residues of the mortar in a grouting pipe are reduced, and the use convenience is improved.

The utility model relates to a self-anchored anti-floating vibration anchor rod, which is characterized in that three steel strands are arranged in a triangular shape, a guide part arranged at the lower part of the steel strand anchor rod consists of a guide bracket, an anti-floating bearing block and a bearing plate, the anti-floating bearing block is arranged at the central position of one side of the bearing plate, the guide bracket is provided with a soil discharge groove, and the soil discharge groove is provided with a soil discharge hole. The self-anchored anti-floating vibration anchor rod further comprises a vibration sleeve, the vibration sleeve is of a squirrel-cage structure and is arranged outside the steel strand anchor rod in a sleeving mode, a limiting buckle and a matching groove are arranged at the bottom of the vibration sleeve, a vibration ring is arranged on the lower portion of the vibration sleeve, a vibration elastic piece is arranged on the vibration ring, and the limiting buckle and the matching groove are matched with each other. The steel strand anchor rod has the advantages that the steel strand is prevented from floating and drifting while vertical guiding is conducted, the matching degree of the steel strand anchor rod and an anchor rod hole is improved, the floating resistance is improved, meanwhile, bubbles in mortar are shocked out through the vibration elastic pieces, grouting is sufficient, the mortar is evenly distributed, the grouting quality is improved, and the tolerance strength of underground engineering is enhanced.

The invention relates to the technical field of bolt hole construction, and particularly discloses a split bolt hole plugging device which comprises a drill bit, a motor, a cleaning brush, a connecting assembly and a grouting pump. An insertion pipe grouting hole is formed in the drill bit in a penetrating manner; the motor drives the drill to rotate; the cleaning brush is detachably arranged at the front end of the drill bit; the grouting pump is connected to the slurry storage equipment through a suction pipe; the connecting assembly is used for connecting the grouting hose and the pipe inserting grouting hole of the drill bit. Impurities in the split bolt hole are cleaned through the cleaning brush, the cleaning brush is taken down after cleaning is completed, the grouting hose and the drill bit are connected through the connecting assembly, and a grouting channel is formed; and grouting is conducted at the center through the insertion pipe grouting hole of the drill bit, and the grouting quality and the plugging effect are improved.

The utility model discloses a fixing fixture for an anti-floating anchor rod, and relates to the technical field of mechanical engineering, a second through column is arranged outside the anchor rod, a stable holding mechanism is assembled in the second through column, a power assembly is assembled in the second through column, the stable holding mechanism comprises a plurality of first connecting rods, and the first connecting rods are connected with the first connecting rods. The side end of each first connecting rod is fixedly connected with a second connecting rod, the side end of each second connecting rod is fixedly connected with a hinge block, the side end of the second through column is fixedly connected with a fourth through column, and the side end of each first column block is arranged at the side end of the fourth through column. According to the mechanism, the mechanical transmission principle is adopted, a traditional fixing clamp for the anti-floating anchor rod is improved, the stability of the traditional fixing clamp for the anti-floating anchor rod for fixing the anti-floating anchor rod is improved through an additional structure, when the hole diameter is too large, the anchor rod is inserted, the phenomenon of cavities or non-uniformity in the grouting process can be prevented, and the grouting quality and the anchoring effect are improved.

The utility model discloses an anti-clogging screw pile used for a trestle in a complex terrain, which comprises an anti-clogging screw pile body, the anti-clogging screw pile body comprises a pile body, the upper end of the pile body is a pile top, and the lower end of the pile body is provided with a pile tip; the grouting holes are formed in the pile body or the pile tip in a penetrating mode or formed in the pile body and the pile tip; the anti-blocking cover is detachably mounted on each grouting hole; and the prestress bearing part is arranged on the outer surface of the pile body and used for increasing the friction force between the pile body and soil and improving the lateral stability and the bearing capacity of the pile. According to the utility model, blockage in the grouting process can be prevented, and the grouting quality and the construction efficiency are ensured; in addition, the anti-blocking cover can prevent sundries such as soil or gravels in the screw pile from entering the grouting pipeline, the purity of the grouting material is guaranteed, the grouting material can be injected into the screw pile more evenly, and the grouting efficiency and quality are improved.

This invention discloses a grouting device in which a centralizing mechanism, a slip mechanism, and a rubber sealing cylinder are slidably mounted on a central pipe in sequence along the direction of grout flow. The slip mechanism is fixedly connected to the centralizing mechanism and slides synchronously on the central pipe. The end of the rubber sealing cylinder opposite to the centralizing mechanism is fixedly connected to the central pipe through a force-limiting connection mechanism, and the rubber sealing cylinder moves synchronously with the central pipe through the force-limiting connection mechanism. This invention integrates all the technical advantages of segmented precise grouting, controllable grouting parameters, anti-clogging and anti-jamming, flexible setting and unsealing, and recovery in extreme cases. It can fully match the differentiated grouting needs of different strata, geological conditions, and grout volumes, fundamentally solving all the technical defects of traditional grouting devices, significantly improving the quality and efficiency of stratum grouting reinforcement, and reducing construction costs and risks. It is the optimal technical solution for surface directional drilling grouting construction.

The present invention provides an integrated device and method for offshore wind power foundation anti-scour and aquaculture cages, including a grouting system on a mother ship and an integrated system for anti-scour and aquaculture cages, the grouting system including an air compressor, a sealable transparent pressure-resistant barrel, a detachable partition, a pressure gauge, a slurry delivery valve and a high-pressure slurry delivery pipe, the integrated device including a pressure-resistant grouting pipe, a flexible anti-scour non-woven fabric, a lead block, an aquaculture cage, and a circular cage, the grouting pipe is fixed by a circular cage and covered with a flexible anti-scour non-woven fabric, and an aquaculture cage is set on top. The present invention also discloses a method for using the above device. The integrated system for offshore wind power foundation anti-scour and aquaculture cages of the present invention can realize an effective combination of an offshore wind power foundation anti-scour device and a fishery cage, effectively solving the problems of reduced foundation stability and bearing capacity due to seabed scour, as well as the lack of offshore aquaculture and fish trapping devices.

A simple prefabricated stair grouting hole turnover protection device comprises a cast-in-place platform plate, an anchor head, a prefabricated bolt and a bolt sleeve, a prefabricated stair is located above one side of the cast-in-place platform plate, the anchor head used for fixed connection is reserved in the cast-in-place platform plate, and the upper end of the anchor head is fixedly connected with the prefabricated bolt; one end of the prefabricated bolt is inserted into a grouting hole of the prefabricated stair, the top of the prefabricated bolt is sleeved with a bolt sleeve, a gasket is fixed to the top of the bolt sleeve, and the top of the gasket is movably connected with a pull ring. The device can effectively prevent construction waste such as rainwater and dust from entering the hole, corrosion of the prefabricated bolt is prevented, the later grouting quality is improved, compared with a traditional protection method, the device reduces the later manual hole cleaning difficulty, the hole cleaning workload is greatly reduced, the construction efficiency is improved, the device has the characteristic of being capable of being turned over, and the construction cost is reduced. And the material loss is less, so that the consumption of disposable materials is reduced, and the construction cost is reduced.

The invention provides a grouting device and a grouting method, and the grouting device comprises a slurrying part which comprises a slurrying tank with a material inlet and a first slurry outlet; the slurry storage part comprises a first chamber and a second chamber which are mutually independent, the slurry storage part is further provided with a first slurry inlet communicated with the first chamber and a first slurry outlet communicated with the second chamber, and the first slurry inlet is further communicated with the first slurry outlet; a slurry suction port of the grouting pump is communicated with the first slurry outlet; the flow guide assembly comprises a flow guide pipe and a flow guide pump, the first end of the flow guide pipe extends into the first cavity and is in sealed communication with the first cavity, the second end of the flow guide pipe extends into the second cavity and is in sealed communication with the second cavity, and the flow guide pump is arranged on the flow guide pipe and can suck fluid in the first cavity into the second cavity. According to the scheme, after the slurry is made by the slurry making part, the slurry can smoothly flow to the slurry storage part, a slurry storage pool does not need to be dug independently, and the operation process is convenient and fast.

The application discloses an intelligent monitoring system for underground coal mine grouting based on artificial intelligence and relates to the technical field of intelligent monitoring of coal mines.The application is used for solving the technical problems that real-time monitoring and control cannot be performed on various grouting parameters, timely remediation cannot be performed on substandard grouting components to guarantee grouting quality, and the grouting quality cannot be evaluated to reflect the grouting effect of each grouting component.Through real-time collection of grouting-related physical and chemical data and safety data, three signals reflecting the grouting safety of underground coal mine grouting components are obtained through analysis and processing, which facilitates subsequent targeted grouting control and grouting quality evaluation according to the three signals.Through valve closing and automatic adjustment of the grouting water-cement ratio, grouting pressure or grouting flow rate in combination with the underground coal mine grouting components corresponding to the grouting danger signal and the grouting adjustment signal, timely remediation can be performed when the grouting parameters are substandard, and the safety during the remediation process is guaranteed.

The present invention provides a prestressed pipeline grouting device, which relates to the technical field of grouting equipment, including a mounting base, a stirring barrel arranged above the mounting base, a feed barrel arranged above the stirring barrel, the bottom of the feed barrel being connected to the inside of the stirring barrel through a feeding pipe, a partition arranged in the feed barrel, the partition dividing the feed barrel into a feeding chamber and a suction chamber, a driving component arranged in the feed chamber, a suction component arranged in the suction chamber, a discharge pipe and an extraction pipe arranged on the side walls of the feed barrel, one end of the discharge pipe being connected to the inside of the suction chamber, the other end of the discharge pipe being connected to the outside of the feed barrel, one end of the extraction pipe being connected to the inside of the suction chamber, the other end of the extraction pipe extending into the stirring barrel and being provided with a suction block, and the bottom of the stirring barrel being connected with a discharge pipe. In the present invention, the air in the stirring barrel can be drawn into the suction chamber through the extraction pipe and discharged from the discharge pipe, thereby reducing the air in the stirring barrel, thereby reducing the generation of bubbles inside the grouting material, improving the grouting quality, and ensuring the smooth progress of the pipeline grouting.

The utility model discloses a foundation pit grouting device, relates to the technical field of building construction, and provides the following scheme aiming at the problems of non-uniform grouting and influence on reinforcing effect caused by insufficient stirring time in the prior art: the foundation pit grouting device comprises a bottom plate, fixing mechanisms are symmetrically arranged on two sides of the bottom plate, and the fixing mechanisms are telescopic fixing structures; the fixing mechanism is used for fixedly placing the bottom plate, the circulating mechanism is arranged above the bottom plate, the circulating mechanism is of a spiral conveying structure, the stirring barrel is arranged at the upper end of the circulating mechanism, and the stirring mechanism is arranged in the stirring barrel. The conveying rod rotates along with the linkage belt to conduct secondary stirring on the grout to crush grout cakes, the grout is injected into the stirring barrel again through the grout pump, circulating stirring is conducted, the stirring time is greatly shortened, and grouting is more uniform.

This disclosure relates to the field of coal mining technology. One embodiment of this disclosure provides a coal mine goaf fireproof grouting conveying device, including a base plate. A mixing and stirring assembly is fixedly installed on the top of the base plate, and fixing blocks are fixedly installed on both sides of the bottom of the base plate. In the fixing process, a stable anchoring mechanism is formed through a multi-stage transmission structure from the second adjusting block to the fixing protrusion. The horizontality of the connecting sleeve can be precisely adjusted according to different geological conditions to ensure that the fixing protrusion is firmly drilled into the ground, providing reliable support for the base plate and the mixing and stirring assembly, and effectively resisting the pressure and vibration generated by the grouting operation. In terms of position adjustment, the fixing protrusion is first lifted off the ground, and then the second adjusting block is rotated in the opposite direction to restore the component to its original position. Flexible movement is achieved with the help of external force and the support of the moving assembly. The grouting position can be adjusted according to the actual situation of the goaf. Through the above technical solution, the technical problem of a coal mine goaf fireproof grouting conveying device in the prior art is solved.

The invention relates to a micro-disturbance grouting system with a feedback function, which comprises a parameter configuration module, a grouting execution module, a monitoring module and a feedback control module, constructing a micro-perturbation geological adaptation model, and configuring initial grouting parameters and perturbation allowable threshold intervals; executing parameter stepped dynamic adjustment by adopting a hierarchical adjustment strategy, correcting the conveying rhythm by relying on a grouting uniformity compensation mechanism, and switching a grouting process; grouting parameter data are obtained through multi-channel synchronous obtaining logic, grouting parameter time sequence data are generated through processing of a dynamic noise suppression algorithm and a parameter calibration model, calibration is conducted according to a timestamp, and a grouting parameter curve is generated in a layered visualization mode; a hybrid control strategy is adopted, a disturbance-grouting parameter nonlinear mapping model is established in combination with historical data and a disturbance allowable threshold interval, and an adjusting instruction is generated through a deviation grading processing mechanism; the system improves the micro-disturbance control precision and the grouting quality, and is suitable for construction of complex stratums in near-sensitive areas.

The invention discloses a construction method for treating a steep inclined slope in a karst area through grouting, and belongs to the field of karst area construction methods. S2, drilling is conducted; s3, a grouting pipe is installed; s4, preparing slurry; s5, performing grouting operation; and S6, hole sealing. According to the geological characteristics of a karst development area, the position of the engineering pile located on the abrupt slope surface is determined by combining a one-pile-one-exploration and karst survey report, then grouting holes are buried in the periphery of the engineering pile, the karst area is reinforced through grouting, the hidden karst cave abrupt slope surface is eliminated, the stability and perpendicularity of drilling holes are ensured, and the stability and perpendicularity of the drilling holes are improved. And the possibility of inclined drilling and drill rod breakage caused by uneven stress of the drill bit is reduced.

The utility model relates to the technical field, and discloses an exhaust valve device for bridge prestressed pipeline grouting, which comprises a bridge body, a first steel pipe and a second steel pipe are mounted on two sides of the bridge body, one end of each of the first steel pipe and the second steel pipe is provided with an external thread structure, and one end of the first steel pipe is sleeved with a three-way joint. The side end of the three-way connector is communicated with the second steel pipe, the other end of the three-way connector is in threaded connection with a first internal and external thread nut, one end of the first internal and external thread nut is in threaded connection with a second internal and external thread nut, and one end of the second internal and external thread nut is in threaded connection with a quick-screwing thread small ball valve. According to the utility model, the built-in exhaust hose guides and exhausts the air retained at the grouting port and the grout outlet of the beam body prestressed pipeline, so that the grouting is full and full, the grouting quality of the prestressed pipeline is greatly improved, the damage of a prestressed bridge is effectively reduced, and the post-period bridge prestressed maintenance cost is reduced.

The present invention relates to the technical field of grouting equipment, and in particular to a partitioned grouting device for prefabricated component connection and its application method, comprising a grouting device, a grouting pipeline and a grouting device, wherein the grouting device is fixedly connected to the grouting device through the grouting pipeline and forms an inner cavity communication, the grouting device is provided with a lifting device, the lifting device can move up and down at the grouting device to perform pressure grouting and stirring on the slurry in the grouting device, and the grouting device is provided with a dredging device, the dredging device is used to dredge the grouting liquid and make the slurry flow out of the grouting outlet of the grouting device in a directional manner. The advantages of the present invention are: it can be applied to a variety of grouting environments, enhance the self-flowing ability of the slurry, and improve the grouting quality; it has a simple structure, reasonable functions, strong integrity, strong operability, strong practicality, novel design, and is suitable for promotion.

This application relates to the field of engineering construction technology, and in particular to a curtain grouting orifice sealing device, comprising a sealing pipe, a limiting ring, and an expansion component; one end of the sealing pipe passes through the curtain grouting hole, and the other end of the sealing pipe extending out of the curtain grouting hole is fixedly connected to the limiting ring, and the limiting ring is coaxially fixed with the sealing pipe; the expansion component is installed on the sealing pipe, and the expansion component includes a sealing cloth for the gap between the sealing pipe and the wall of the curtain grouting hole, the sealing cloth being wrapped around the sealing pipe; the designed curtain grouting orifice sealing device, through the expansion component, facilitates the filling and sealing of the gap between the sealing pipe and the wall of the curtain grouting hole, and at the same time, through the multi-layer wrapping of the sealing cloth, facilitates the filling and sealing of the gap between the sealing pipe and the wall of the curtain grouting hole, preventing grout leakage along the gap between the sealing pipe and the wall of the curtain grouting hole, and improving the grouting quality of curtain grouting construction.

The utility model discloses a multifunctional grouting trolley for a segment tunnel. The multifunctional grouting trolley comprises a travelling crane platform, travelling crane wheel sets, an equipment platform and functional equipment. A driving track is laid at the tunnel bottom of the segment tunnel; a plurality of travelling crane wheel sets are arranged at the bottom of the travelling crane platform and move on travelling crane rails at the bottom of the tunnel; equipment platforms are arranged on the left side and the right side of the travelling crane platform; functional equipment is arranged on the equipment platforms; a traveling track for a tunnel construction material train to pass through is arranged in the central area of the upper surface of the traveling platform. According to the multifunctional grouting trolley for the duct piece tunnel, automatic and standardized control over tunnel duct piece wall back grouting can be achieved, so that the labor intensity of workers is greatly reduced, and meanwhile the duct piece wall back grouting quality is improved.

The utility model belongs to the technical field of building construction, and particularly relates to a cement mixing pile machine spraying and mixing device which comprises a center shaft and an external pipe arranged outside the center shaft, the center shaft and the external pipe synchronously rotate and can relatively move in the vertical direction, and the upper end of the center shaft extends to the upper side of the external pipe and is provided with a grouting opening. The lower end of the center shaft is provided with a grout outlet located on the inner side of the external pipe, a through groove communicated with the grout outlet and the grout outlet is formed in the center shaft, the bottom of the center shaft extends to the lower side of the external pipe and is provided with a drill bit, spiral blades are arranged on the outer surface of the external pipe, and a plurality of stirring rods arranged between the spiral blades at intervals are installed on the external pipe. According to the utility model, by changing the inclination angles of the stirring blades, the functions of stirring slurry and improving the grouting quality are achieved on the premise that the load during drilling work of equipment is prevented from being increased.

A secondary grouting permeation plate for drainage tunnel segments. When shield tunnel segments are used for drainage, the joints formed after adjacent shield tunnel segments are joined lack standardized grouting quality treatment, leading to potential grouting leaks. In this invention, the unfolded shape of the arc-shaped soft bladder plate matches the side shape of the precast shield tunnel segment. The arc-shaped soft bladder plate has a narrow, elongated cavity inside. Multiple mounting holes are machined on the top side of the arc-shaped soft bladder plate, and a water-stop needle is inserted into each mounting hole. The upper end of the water-stop needle is the grout inlet, and the lower end is the grout release end. The lower end of the water-stop needle is connected to the interior of the arc-shaped soft bladder plate. Multiple recesses are machined on the bottom side of the arc-shaped soft bladder plate, each recess corresponding to a bolt on the side of the precast shield tunnel segment. Multiple grout outlet holes are machined along the thickness direction of the arc-shaped soft bladder plate, and each grout outlet hole is connected to the narrow, elongated cavity of the arc-shaped soft bladder plate.

The invention relates to the technical field of water conservancy projects, in particular to a grouting device for water conservancy construction. Comprising a slurry return pipe and a slurry return pipe, a slurry feeding barrel is arranged at the upper end of the grouting pipe and connected with the slurry returning barrel, and a vibrator is hung on the side wall of the lower end of the grouting pipe; a stirring paddle is arranged in the support and the slurry returning barrel, a driving disc is fixed to the shaft end of the stirring paddle, a driving shaft is rotationally installed on the support and located under the driving disc, a vortex disc is fixedly installed on the driving shaft, a cam is fixedly installed on the driving shaft, and the cam abuts against a warping plate rotationally installed on the support. The other end of the warping plate abuts against a lifting rod which is vertically installed on the support in a sliding mode, and the sizing barrel is installed on the lifting rod in a fastened mode. In the slurry circulating process, gas in a drill hole is promoted to flow into the slurry returning barrel through the vibrator, and circulating slurry is continuously stirred through the stirring paddle, so that the gas floats upwards and is discharged, separation in advance is achieved, the number of bubbles in grouting is reduced, and the grouting quality is improved.

The invention discloses an automatic electric cement grouting machine which comprises a bottom support, the upper end of the bottom support is arranged in a front-low rear-high mode, an electric control box is arranged at the rear end of the bottom support, a grouting motor is arranged on the rear side of the upper end of the bottom support, a pressurizing pipe is connected to the front end of the grouting motor, and a feeding hopper communicates with the rear side of the upper end of the pressurizing pipe. A feeding hopper is arranged in the grouting motor, an opening in the upper end of the feeding hopper is horizontally formed, a primary pressurizing pipe is connected to the front end of the pressurizing pipe, a secondary pressurizing pipe is arranged at the front end of the primary pressurizing pipe, and the grouting motor, the pressurizing pipe, the primary pressurizing pipe and the secondary pressurizing pipe are all arranged in the mode that the front portions are low and the rear portions are high. When cement reaction force borne by the pressurizing push plate and the variable-pressure push plate is increased, the variable-pressure push plate slides backwards outside the motor rotating shaft, the pressurizing push plate and the variable-pressure push plate rotate separately, the density of a pushing spiral plate in the pressurizing pipe is increased, the cement internal pressure is increased, the grouting efficiency and effect are improved, and self-adaptive pressurizing is achieved.

The grouting device for building construction comprises a bottom plate and two vibration rods, the upper surface of the bottom plate is fixedly connected with a pushing handle, a fixing frame and four fixing plates, the inner wall of the fixing frame is fixedly connected with two hydraulic cylinders, and the telescopic ends of the two hydraulic cylinders are jointly and fixedly connected with a movable plate; a grouting pipeline is fixedly connected to the inner wall of the movable plate, a bearing is fixedly connected to the inner wall of the grouting pipeline, a supporting plate is fixedly connected to the top end of the grouting pipeline, and a driving motor is fixedly connected to the front face of the supporting plate. Through mutual cooperation of the fixing plate, the winding roller, the fixing cable and the vibration rod, bubbles in concrete grout can be discharged in the grouting process, the use effect of the device is enhanced, the situation that bubbles are easily generated in the grout during grouting work can be effectively avoided, the grout falling speed is low, and the grouting efficiency is improved. And the grouting quality and the grouting efficiency are easily reduced.

The invention discloses a high-bond-stress grouting sleeve and a prefabricated shear wall thereof, and belongs to the technical field of prefabricated wall bodies, the high-bond-stress grouting sleeve comprises a sleeve body, the side wall of the sleeve body is provided with two grout ports distributed up and down, each grout port is communicated with a grout pipe, and the grout pipes are communicated with the grout ports. The slurry pipe comprises a first type slurry pipe body and a second type slurry pipe body, the first type slurry pipe body is a straight pipe, the first type slurry pipe body is located on the cylinder body on the front side, the second type slurry pipe body comprises a straight part and a bent part, the second type slurry pipe body is located on the cylinder body on the rear side, and the straight part is connected with the bent part. The bent part is communicated with the cylinder body on the rear side; the straight parts of the first type of slurry pipe body and the second type of slurry pipe body are parallel to each other; and the lower end of the cylinder body is connected with a bolt through a thread. The device has the advantages of high precision and bond stress.