10results about How to "Improve grout quality" patented technology

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.

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.

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 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.

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.

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.

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 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.