Method for remote filling of explosion-proof compression-resistant closing of coal mine

Abstract

The invention relates to a method for remote filling of explosion-proof compression-resistant closing of a coal mine. The method comprises the steps of (1) piling up a fire dam on each of two sides in a closed section roadway with outbreak of fire; (2) arranging a plurality of guide pipes between the fire dam on the side far away from a fire area and the side wall of the roadway, putting one end of each guide pipe into the roadway between the two fire dams, and connecting the other end of each guide pipe with a conveying pipeline directly communicated with the outside of a mine; and (3) injecting a filling material into the conveying pipeline which is arranged outside the mine to ensure that the filling material flows into the roadway through the guide pipes, and filling and closing the roadway between the two fire dams after the filling material is solidified. By adopting the method, the life safety of closing workers can be effectively guaranteed. By adopting foamed cement with strong fluidity as the filling material, the filling material can infiltrate into every gap of the closed space to ensure that the finished fire dams have the advantage of difficulty in air leakage. The foamed cement is strong in anti-explosion capacity and compression resistance, so that the fire dams do not need to be very thick, the closing engineering quantity and sealing time are effectively reduced, and the deformation of surrounding roadways in the closed space can be resisted conveniently. The method disclosed by the invention can be widely applied to the field of underground closing filling of mines.

Description

technical field [0001] The invention relates to an explosion-proof and pressure-resistant sealing method for mines, in particular to a remote filling method for explosion-proof and pressure-resistant sealing of coal mines. Background technique [0002] In terms of enhancing the anti-blast capability of the airtight wall, the main measures taken at present are to increase the thickness of the two airtight walls, and most of the airtight walls are made of bricks, concrete, clay, lime, cement, sand, gravel and rubble, etc. These methods will lead to disadvantages such as large amount of airtight engineering and long construction time. Moreover, for the construction personnel of the airtight wall, the airtightness of the fire zone is an extremely dangerous process, and high risk factors such as gas and coal dust are always threatening their lives. The airtight wall built by increasing the thickness of the airtight wall to enhance the anti-blast ability of the airtight wall has ...

AI Technical Summary

Problems solved by technology

[0002] In terms of enhancing the anti-blast capability of the airtight wall, the main measures taken at present are to increase the thickness of the two airtight walls, and most of the airtight walls are made of bricks, concrete, clay, lime, cement, sand, gravel and rubble, etc. materials, these practices will lead to disadvantages such as large amount of airtight engineering and long construction time

Moreover, for the construction personnel of the airtight wall, the airtightness of the fire zone is an extremely dangerous process, and high risk factors such as gas and coal dust are always threatening their lives.

The airtight wall built by increasing the thickness of the airtight wall to enhance the anti-explosion ability of the airtight wall has poor airtight performance, weak anti-explosion and impact resistance, and it is difficult to effectively prevent air leakage, which greatly increases the management difficulty of the goaf

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