42results about How to "Reduce water gushing" patented technology

The invention discloses a curtain grouting process suitable for water-rich mine underground mining water plugging. According to the arrangement method of grouting holes, six grouting holes facing upwards by 5 degrees, six grouting holes facing upwards by 15 degrees and six grouting holes facing upwards by 25 degrees are formed in each chamber, the grouting holes facing upwards by 5 degrees, the six grouting holes facing upwards by 15 degrees and the six grouting holes facing upwards by 25 degrees are evenly distributed in the plane in a 60-degree staggered mode, and grouting holes facing downwards by -5 degrees, grouting holes facing downward by -30 degrees and grouting holes facing downwards by -60 degrees are formed outward in the chambers at the ends. According to the grouting process, bagged cement in a ground warehouse is transported to underground positions where grouting and leveling are needed, grouting is conducted through a working face temporary stirring station, a two-level pulp storage pond, a grouting pump, a grouting pipe and a hole opening high pressure device, grouting is completed after the designed final grouting pressure is reached, and the whole curtain grouting work is completed after further maintenance and hole cleaning. A grouting curtain with a high water plugging rate is set up underground for roof karst cracks, the water isolation function and the reinforcing function can be achieved, an ore body is safely and efficiently freed under protection of the grouting curtain, technical guarantees are provided for safe and efficient mining of the mine, project input is small, and the construction period is short.

The invention discloses a square vertical-shaft sectioned hidden water interception structure and a construction method thereof. The square vertical-shaft sectioned hidden water interception structure comprises multiple hidden water interception grooves, a water guide pipe, a concrete support, small water draining pipes and large water draining pipes, wherein the multiple hidden water interception grooves are formed in the inner wall of a vertical shaft from top to bottom and are in closed square shapes, and a water retaining wall is arranged at the opening positions of the hidden water interception grooves. The concrete support is arranged on the inner wall of the vertical shaft. Each hidden water interception groove is communicated with the surrounding rock above the hidden water interception groove through a water guide pipe. The small water draining pipes are respectively arranged at the bottoms of the hidden water interception grooves and penetrate through the water retaining wall and the concrete support to be connected with the large water draining pipes. The square vertical-shaft sectioned hidden water interception structure adopts the hidden water interception grooves, guides scattered gushing water and concentrated gushing water into the water interception grooves, the hidden water interception grooves do not occupy a shaft space compared with visible water interception grooves, construction is convenient, the construction speed of the square shaft is improved, and meanwhile the quality of the inner wall of the shaft is ensured.

The invention discloses a construction method of a high-tension water-rich extra-large-section weak breccia tunnel. The method includes the steps of exploring distribution of fault weak breccia in front of a tunnel face by an advanced geological forecast method; distributing L-shaped gradient drain holes in two inner sides of the tunnel, providing sector drain holes and grouting holes, and allowing upper grouting and lower drainage; providing a combined cylinder grout-stopping wall, and performing a full-face advanced chemical grouting consolidation; constructing an advanced long tube shed with a circumferential closed advanced tube shed guide wall having a foundation, distributing tapered quincunx examining drain holes to detect grouting effect, and finally excavating the tunnel. Through the use of the techniques such as three-layer stereoscopic grouting and drainage, and cement-water glass and epoxy resin sequential grouting, the problem that a high-tension water-rich surrounding rock area with loose weak breccia has ineffective grouting consolidation and non-obvious water plugging effect is solved.

The invention provides a grouting treatment method for a huge thick aquifer area on the roof of a coal seam, including the following stages: the first stage: before mining, carry out sedimentary facies analysis, select floodplain strata as the target layer, if there is no floodplain separated water layer , select the highly permeable aquifer as the target layer; the second stage: probe and locate the permeable skylight for the target layer of the floodplain, and make up for it by grouting, or grouting the highly permeable aquifer to transform it into an aquifer; third Stage: Before mining, monitor the stability of the aquifer that can be used after roof reconstruction; Stage 4: After mining, grouting the slip joints generated on the roof of the coal pillar to form a water-proof curtain. The invention makes up the skylight of the water-resisting layer by grouting before mining or transforms the high-permeability aquifer into a water-resisting layer, and grouting the slip joint after mining to form a water-resisting curtain, so as to reduce the thickness of the aquifer and reduce the mine water inflow. The purpose is to improve the underground operating environment, reduce costs, and restore normal production to the discontinued coal mines.

This disclosure provides an analysis system and method for the design and correction of the water curtain system of an underground water-sealed oil storage depot. Study the case and obtain the relevant parameter data required for the scheme in the laboratory test. Through the finite element analysis method, the selection range of the specific parameters of the water curtain system can be quickly and accurately narrowed, and the final design and construction plan can be determined accurately, time-saving, highly feasible, and low oil leakage rate.

The invention discloses a curtain grouting technology for an ore body roof karst fracture development and strong water-rich ore deposit. According to the technical scheme, firstly, upward exploration and injection holes are distributed, six upward exploration and injection holes with an elevation angle of five degrees, six upward exploration and injection holes with an elevation angle of 15 degrees and six upward exploration and injection holes with an elevation angle of 25 degrees are distributed in each chamber, the exploration and injection holes are designed with the chambers as base points, all the exploration and injection holes of all the lengths are evenly distributed in the plane with a stagger angle of 60 degrees, the hole depth is 50 m, and the exploration and injection holes with the elevation angle of five degrees, the exploration and injection holes with the elevation angle of 15 degrees and the exploration and injection holes with the elevation angle of 25 degrees are evenly distributed in the plane with a stagger angle of 20 degrees; secondly, downward exploration and injection holes are distributed, the outward and downward exploration and injection holes with the angles of -5 degrees,-30 degrees and -60 degrees are distributed in end chambers, the hole depth is 50 m, all the downward exploration and injection holes are evenly distributed symmetrically in the plane, and the included angle is 10 degrees; thirdly, according to the requirement of accurate mining engineering, grouting is carried out, and a grouting curtain is formed. The grouting curtain with the high water plugging rate is built under a mine according to roof karst fractures, the functions of water separation and reinforcement can be achieved, ore bodies are released safely and efficiently under the protection of the grouting curtain, and technical guarantees are provided for safe and efficient mining of the mine.

The invention relates to coal mine underwater treatment technology, in particular to a stope face roof water pre-drainage construction method, which solves the technical problem of treatment of a water-bearing bed on a coal seam of a stope face. As the process of stoping on the stope face includes down stoping firstly and up stoping secondly, stope face roof water is drained in advance through roadways beside the stope face before stoping, a drill site chamber and a water bin are constructed at the lowest position of each of the roadways, two drainage pipelines are paved on each of the roadways, an independent drainage system is utilized, drainage holes are drilled in the drill site chamber towards the stope face roof, and water for drilling is led into the water bin through hoses directly and is drained by the drainage system of the roadways. Since roof water is drained in advance, water inflow during the stoping process is reduced effectively, troubles to production of coal mines due to the roof water are eliminated, affection of flood disaster to production is avoided, a safe and comfortable working environment is provided for the stoping operation, and conditions for stability and high yield of the stope face are created.

The invention provides a system and method for downhole high-pressure, large-flow out-of-control hydrological drilling plugging. In the damaged hydrological drilling casing, a new casing of one level smaller is re-runned, and then a casing of an appropriate size is run in according to the gap between the old and new casings. Hard aggregate and soft aggregate (the specific gravity is smaller than water), inject a certain amount of soft and hard aggregate into the new casing in a certain proportion, and use the principle that water always flows along the direction of the least resistance. Under the action of pressurized water and the pump pressure above, it can only enter the gap between the new and old casings with low resistance. The hard aggregate fills the large gap between the new and old casings to act as a skeleton and support, and the soft aggregate fills the hard bone. The material gap, and then inject cement through the new casing to complete the treatment. The soft and hard aggregates are skillfully combined, which has both strength and flexibility, and a small specific gravity. The hard aggregates are mainly pine wood blocks and wooden wedges, and the soft aggregates are sawdust, Wood shavings are mainly used to solve the problem of high pressure and large flow damage hydrological drilling.

The invention discloses a method for preventing and controlling water hazards in tunnels under strong water-rich and weakly cemented aquifers, which include long-distance directional drilling for intercepting groundwater in the aquifer on the roof of the tunnel, conventional drilling, bolt grouting, and U-shaped steel shed support and other steps. The present invention combines the characteristics of the aquifer thickness, water-richness, cementability and water-resisting layer thickness of the roof of the tunneling roadway, adopts long-distance directional drilling to intercept and dredge the groundwater; drills and injects grout to seal the water seepage crack of the roadway; anchor rod grouting Cooperate with the technical scheme of U-shaped steel shed support, through long-distance directional drilling to intercept the water supply of the roadway roof aquifer to the roadway, and at the same time, drain and grout the conventional drilling and grouting bolts to seal the water seepage cracks and anchors in the roadway The water seepage channel between the rod, the anchor cable and the rock formation effectively reduces the water inflow of the excavation roadway and strengthens the support of the roadway, thus avoiding the occurrence of water damage and roof accidents in the excavation roadway under the strong water-rich and weakly cemented aquifer.

The present invention provides a method for curtain closure of point-shaped vertical aqueducts in submerged aquifers. After the center line is connected, the point-shaped vertical water guide channel is surrounded inside the line; in the grouting step, slurry is injected into the hole, and an anti-seepage curtain is obtained after the slurry solidifies. The above solution provided by the present invention cuts off the supply water source of the submerged aquifer by constructing a trap-type curtain body around the point-shaped vertical water guide in the aquifer, reduces the water inflow in the mine, eliminates the hidden danger of water damage, and greatly saves the cost input at the same time.