Method for repeatedly repairing and using filling borehole
A technology for filling and filling slurry in drilling holes, which is applied in the fields of filling materials, earth-moving drilling and mining, safety devices, etc. The effect of repeated repair and use, reducing the overall cost of filling and reducing the quantity
Inactive Publication Date: 2008-03-12
CENT SOUTH UNIV
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problems that mine filling boreholes are easy to be blocked, cannot be reused after being blocked, and the position of new boreholes is insufficient, and provide a method for reusable filling boreholes
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[0012] For the construction drilling, the casing 1 is fixedly coupled with cement mortar in the drilling, and the filling pipe 2 is not coupled in the casing. The outer diameter D2 of the filling pipe is 20-150mm smaller than the inner diameter D1 of the casing. The filling pipe 2 is fixed at the orifice and the bottom of the hole. The filling slurry is transported by the filling pipeline. When the filling pipeline 2 is damaged and leaks slurry or the filling volume reaches the expected life of the pipeline, stop using the drilling, and use a geological drilling rig equipped with a cutting tool 3 to extend the drill pipe 4 into the damaged filling pipeline and cut in sections in the hole and take it out (as shown in Figure 1), or use a drilling rig to lift the damaged filling pipe in the borehole out of the hole in sections, cut and take it out (as shown in Figure 2), or put the damaged filling pipe in the underground chamber 5, and use the cutter 3 to cut And take it out (as...
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The invention discloses a method of remaintainable and reusable drilling during underground mining process. Execute drilling and perform coupled installation for sleeve pipes inside the drilled holes, after which fixing uncoupled filling pipelines inside the sleeve pipes; the filling pipelines are respectively fixed on the opening and bottom of the holes; after the filling pipelines are damaged and leaked, or anticipated service life of the filling pipelines is expired, replace the filling pipelines. Due to the uncoupled configuration of the filling pipelines inside the holes with the sleeve pipes, on one hand, it is easy to detect damage and leakage of the filling pipelines; on the other hand, it is possible to replace the damaged or old filling pipelines in time. Thus, the invention can fulfill remaintenance and reuse of filling holes, lower cost and resolve the difficult problem of insufficient positions of holes in newly executed mines with filling holes.
Description
technical field [0001] The invention belongs to the technical field of underground mine mining, and mainly relates to a method for repeatedly repairing and using filling boreholes in the process of underground mine mining. Background technique [0002] In the pipeline hydraulic transport filling system, the surface and underground filling pipelines are generally connected by vertical drilling. After the drilling construction is completed, the casing is coupled to protect the hole wall. Usually, the casing and the hole wall are consolidated together, and the casing is used as a filling pipe in the borehole. During the transportation of the filling slurry, due to the high hardness of the aggregate, irregular shape, high conveying concentration and high flow velocity, it will impact and corrode the casing, which is easy to wear through the casing, causing the hole wall to collapse and block the drill hole. Thereby the drilling is scrapped. To keep the filling work going, new ...
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IPC IPC(8): E21F15/08
Inventor 王新民张钦礼王泽群潘常甲方世宏李夕兵
Owner CENT SOUTH UNIV