8results about How to "Improve grouting effect" patented technology

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 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.

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 application provides a house pillar type goaf grouting method, which comprises the following steps: performing directional drilling operation in the roof area of the house pillar type goaf to form multiple unconnected horizontal directional drill holes; the height of the horizontal directional drill hole is higher than the highest height of the coal pillar in the house pillar type goaf; performing hydraulic fracturing operation on each horizontal directional drill hole to generate at least one crack connected with the horizontal directional drill hole; and performing grouting operation on each horizontal directional drill hole to inject grout into the house pillar type goaf through each crack. The house pillar type goaf grouting method provided by the application generates multiple horizontal directional drill holes, generates multiple cracks by using the fracturing method, connects the horizontal directional drill hole with the goaf, uses the cracks as grouting points, realizes common grouting of multiple grouting points, makes the injected grout more uniform, and achieves better grouting effect.

The utility model discloses a coal mine tunnel support grouting anchor cable which comprises a grouting anchor cable body, the grouting anchor cable body is hollow, the right end of the grouting anchor cable body is fixedly communicated with a guide head, the guide head is provided with a grout outlet, and the surface of the grouting anchor cable body is movably sleeved with a baffle. By arranging the annular air bag, the inflation pipe, the annular pipe and the valve, when grouting operation needs to be carried out, the annular pipe can be inflated through the communicating pipe at the top of the annular pipe, gas enters the annular air bag in the stop-grouting plug through the communicating pipe to enable the annular air bag to be expanded, and therefore a gap between the stop-grouting plug and the inner wall of a drill hole can be better filled; grout leakage is effectively prevented, and the grouting effect and the coal mine tunnel supporting quality are improved.

This invention provides a grouting device and a construction method for cast-in-place piles, belonging to the technical field of grouting devices. The device includes an outer grouting pipe and an inner grouting pipe: the outer and inner grouting pipes are coaxially arranged, with a pre-embedded part at one end of the outer grouting pipe, including a pipe head, a protective pipe, and a breakable component; the inner grouting pipe has multiple sets of second grout outlets at one end near the pre-embedded part, the pipe head is installed on the inner grouting pipe, and the two ends of the protective pipe are respectively sleeved on the inner grouting pipe and the pipe head, covering the second grout outlets for sealing and preventing blockage during pre-embedding; a first grouting cavity is formed between the outer and inner grouting pipes, and a second grouting cavity is formed inside the inner grouting pipe; multiple sets of first grout outlets are opened on the side wall of the outer grouting pipe; a grouting end cap is installed on the outer grouting pipe, with a detachable first plug and a second plug inside the grouting end cap, and a grouting port is opened on the grouting end cap; this improves the stability and reliability of the device during grouting construction and avoids rework due to channel blockage.