Fly ash injecting system, and fly ash filling method thereof
A technology of fly ash and main road, which is applied in the direction of filling, earth square drilling, safety devices, etc., to achieve good economic benefits, good social benefits, and save money
Inactive Publication Date: 2018-12-11
DATONG COAL MINE GRP
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Problems solved by technology
[0003] The present invention provides a fly ash injection system and a fly ash filling method thereof in order to solve the problem that underground coal mine fire prevention and airtight production does not need to be mixed in the mine
Method used
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Embodiment Construction
[0018] The present invention will be further described below in conjunction with specific examples.
[0019] A fly ash injection system such as figure 1 , figure 2 and image 3 As shown: it includes a fly ash injection workshop 9 and a fly ash injection main pipeline 10, the fly ash injection workshop 9 is located on the ground, and is input to the underground area that needs to be closed through the fly ash injection main pipeline 10, All roadway ports in the closed area are equipped with fireproof seals, the fireproof seals include two closed walls 8 built with flake mortar with a thickness of 1m, the distance between the two closed walls 8 is 1m, and the two closed walls 8 are filled with pulverized coal Ash 13, a closed wall 8 connected to the fly ash main pipeline 10 is provided with a plurality of working holes, that is: the closed wall 8 is provided with a slurry overflow hole 2 near the top, located at the front of the slurry overflow hole 2 There is a grouting hol...
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The invention discloses a fly ash injecting system, including a fly ash injecting workshop and a fly ash injecting main pipeline. The fly ash injecting workshop is on ground, and is connected with anunderground region which needs sealing through the fly ash injecting main pipeline. Roadway ports of a sealed region are provided with fireproof seals. The fireproof seal comprises two sealing walls which has thickness of 1 m and are built by rubble mortar. A spacing distance of the two sealing walls is 1 m. The two sealing walls are internally filled with fly ashes. The sealing wall surface connected with the fly ash injecting main pipeline is provided with a plurality of operating holes, that is, the position of the sealing wall, close to the top, is provided with a grout vent hole. A drilled grout hole is right below the grout vent hole. The left side and the right side of the drilled grout hole are provided with two fly ash injecting holes. Two observing holes are arranged below the drilled grout hole, and a water returning hole is arranged below the observing holes. The fly ash injecting main pipeline is connected with the fly ash injecting holes. The system and the method reducelabor intensity of workers, reduce underground transportation accident rate, and have good social benefit.
Description
technical field [0001] The invention relates to the field of sealing goafs under coal mines, in particular to a fly ash injection system and a fly ash filling method, which are suitable for sealing goafs under coal mines. Background technique [0002] Under the coal mine, after the coal mining is over, there are many coal residues in the goaf, which brings great safety hazards to natural fires. The closure of the goaf has always been an important problem that plagues the coal mines of Tongmei Group. According to the regulations The requirements stipulate that after the mining of the mining face is completed, the permanent sealing must be carried out within 45 days. However, due to many factors such as the tension of moving, the difficulty of moving equipment, and the congestion of moving routes, the permanent sealing cannot be completed as required. The amount of sealing work is large, the transportation of materials is also difficult, and there are safety hazards such as sp...
Claims
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IPC IPC(8): E21F15/00E21F15/08
CPCE21F15/005E21F15/08
Inventor 左利君吴殿文赵科喆梁栋林刘春龙
Owner DATONG COAL MINE GRP