18results about How to "Improve grouting effect" patented technology

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 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 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 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 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 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 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 utility model discloses a grouting device for water conservancy engineering construction, belonging to the field of grouting technology for water conservancy engineering. The device includes a grouting truck and casters. Multiple casters are fixedly connected to the bottom of the grouting truck, and a grouting tank is fixedly connected to the upper surface of the truck. A precision grouting component is installed on the outer surface of the grouting tank, and a mixing and defoaming component is installed inside the tank. It can monitor and precisely control the flow rate of the grouting fluid in real time through a flow meter on the surface of the grouting pipe, ensuring that the grout is injected into the stratum at an appropriate rate, avoiding problems such as stratum rupture or uneven distribution caused by excessively fast or slow flow rates. Simultaneously, a pressure detector can detect pressure changes during the grouting process in real time, promptly identifying abnormalities. The safety and effectiveness of the grouting operation can be ensured by adjusting the speed or pressure of the water pump, thereby reducing sudden impacts on the stratum and lowering the risk of stratum rupture.

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.

The invention discloses microcapsule type water glass for double-slurry grouting and a preparation method and application thereof.The method comprises the steps that water glass is packaged in a controllable release capsule, the water glass and cement slurry are injected into a drill hole together, the capsule is dissolved or broken at a preset position, the water glass is released and fully mixed with the cement slurry, then solidification is conducted, and a solidified body is formed; coal and rock strata are reinforced. The slurry mixing uniformity is effectively improved, early coagulation is prevented, the construction process is simplified, the grouting effect is improved, dynamic regulation and control of the slurry coagulation time are achieved, the applicability is high, and the method can be widely applied to the fields of coal and rock stratum reinforcement, mine water prevention and control, tunnel and underground engineering, water conservancy and hydropower, environmental protection, municipal administration and the like.

The utility model discloses a pipe drawing auxiliary device for hydraulic engineering covering layer grouting, belongs to the technical field of pipe drawing assistance, and solves the problem that in the prior art, a pressure gauge is directly arranged on a grouting pipe for overall pressure monitoring, grouting states of different stratums cannot be distinguished, and pipe drawing is prone to being discontinuous. The device comprises an exhaust pipe which is movably arranged on a grouting pipe and is used for exhausting gas in each grouting section when grouting is carried out on each grouting section, and a gas sensor which is arranged on the exhaust pipe and is used for sensing whether gas is exhausted from each grouting section, the sealing structure is arranged on an exhaust pipe of the grouting pipe and is matched with a drill hole in a sealing mode to seal a grout outlet of the grouting pipe in each grouting section needing to be grouted, an exhaust hole corresponding to the exhaust pipe in a sealing mode is formed in the sealing structure, and the sealing structure is separated from the drill hole in the initial state. And the sealing structure is hermetically matched with the drill hole under the acting force of the exhaust pipe. The auxiliary pipe pulling device is used for pipe pulling assistance in hydraulic engineering covering layer grouting.

The application provides an underwater butt joint reinforcement method in a high water pressure and strong permeation stratum, relates to the field of shield construction, is suitable for underwater butt joint engineering of two large-diameter shield machines, has high safety for high water pressure and strong permeation strata, effectively meets special working conditions of limited underwater construction space, and specifically comprises the following steps: step 1, a plurality of radial grouting holes are arranged in a middle shield of the shield machine, a water stop curtain is formed around the shield machine through radial grouting, and a closed construction environment is provided for subsequent construction; step 2, a plurality of groups of inclined grouting holes are pre-buried on the shield shell, advanced grouting reinforcement is carried out, and the stratum is improved to facilitate the formation of a frozen wall; step 3, after the advanced grouting is completed, a freezing pipe is inserted into the inclined grouting hole to carry out freezing reinforcement; step 4, a pressure relief hole is reserved on the shield machine, the pressure relief hole is inclined through a shield air bubble bin, and the pressure relief hole is used to control the frost heaving force and the frost heaving amount; and step 5, after the freezing is completed, whether water leakage occurs is observed through the pressure relief hole to detect the freezing quality.

The present application relates to the technical field of water conservancy and hydropower engineering underground powerhouse grouting construction, and discloses a upward hole grouting construction method and system, the upward hole grouting construction method comprises the following steps: drilling a plurality of grouting holes in the construction area according to the design hole arrangement scheme, and every two grouting holes are arranged in series as a group; installing a guide pipe in each grouting hole; inputting slurry into one grouting hole in each group, and the slurry flows into the second grouting hole after circulating through the whole hole; sealing the grouting hole after the grouting is completed, and checking and accepting. The present application adopts the arrangement that every two grouting holes are arranged in series as a group, the slurry enters from one grouting hole, enters another grouting hole after circulating through the whole hole, flows into the mixing tank after circulating again, and the effect of filling the slurry gap in the series grouting hole is achieved; meanwhile, the pressure in each grouting hole and grouting pipeline is stable, the risk of pipe blockage and pipe explosion is eliminated, and the risk of lifting is prevented.