A roof fissure water exporting device and method

Abstract

The invention discloses a top plate crack water guiding device and method. The top plate crack water guiding device comprises a water guiding pipe, supporting disks, gaskets, a nut and a sluice valve; the water guiding pipe extends into the internal of a drilling hole; a plurality of seamless steel pipes are connected through a steel sleeve to form into the water guiding pipe; the supporting disks, the gaskets, the nut and the sluice valve are sequentially arranged at the exposure end of the water guiding pipe; a plurality of inclined water guiding holes which are formed in a cross shape are drilled in the water guiding pipe in an interval mode; water resistance rings internally containing swelling agents are arranged on the external wall of the water guiding pipe in an interval mode; hole sealing agents are arranged between the external wall at the tail end of the water guiding pipe and the internal wall of the drilling hole; the exposure end of the water guiding pipe is connected with a flow guiding pipe which is fixed on the top plate or a channel side; a U-shaped pipe is arranged on a connection section of the flow guiding pipe and the sluice valve; the outlet end of the flow guiding pipe is connected with a water storage tank. According to the top plate crack water guiding device and method, water in the top plate cracks is guided out through a communicating vessel theory and the sealed fluid suction, a soft rock supporting system is prevented from losing efficacy due to hydration; meanwhile water yield is effectively controlled and external air is prevented from entering into the drilling hole to weather the rock formation due to the sluice valve and the U-shaped pipe; reliability, safety and persistence of the soft rock supporting system under a crack water condition are guaranteed. The top plate crack water guiding device has the advantages of being simple in structure, low in cost, easy to construct and reliable and effective.

Description

technical field [0001] The present invention relates to a surrounding rock water guiding device and method, in particular to a roof fissure water deriving device suitable for drainage and water diversion of fissure-developed surrounding rocks, soft rock surrounding rocks and seepage surrounding rocks in mines, tunnels, and underground engineering. method. Background technique [0002] In mines, tunnels, and underground engineering, it is often encountered that cracks develop in surrounding rocks, weak surrounding rocks, and seepage surrounding rocks. The surrounding rocks contain obvious weak interlayers, muddy interlayers, various structural surfaces, and various composite structures. Among them, the soft rock surrounding rock with mudstone interlayer has the characteristics of strong expansion and weathering, and under the influence of water and dynamic pressure, the mudstone is easy to muddy when it encounters water, often accompanied by water seepage in the surrounding r...

AI Technical Summary

Problems solved by technology

Among them, the soft rock surrounding rock with mudstone interlayer has the characteristics of strong expansion and weathering, and under the influence of water and dynamic pressure, the mudstone is easy to muddy when it encounters water, often accompanied by water seepage in the surrounding rock, which is wet and soft, causing the anchor cable It cannot be drilled, the pneumatic drilling sticks to the drill pipe, the wet drilling anchorage strength is poor, and the construction is very difficult

At the same time, after general support is adopted for this kind of surrounding rock, various surrounding rock safety accidents such as separation layer instability, collapse and injury will still occur under the condition of water seepage, which will affect production.

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