Construction method for treating goaf penetrating through spontaneous combustion ignition area

Abstract

The invention belongs to the technical field of vertical shafts, and particularly relates to a goaf treatment construction method penetrating through a spontaneous combustion ignition area. A treatment construction method for a goaf penetrating through a spontaneous combustion ignition area comprises the steps that 1, a site is cleaned, a drilling machine platform is erected, and a drilling machine is installed; step 2, opening a hole and drilling to bed rock, and installing an orifice pipe; step 3, reducing the diameter of the drill hole, continuously drilling downwards from the orifice pipe, and arranging a temperature sensor on the drill rod close to the drill bit; 4, when the temperature sensor monitors that the temperature in the hole is lower than 50 DEG C, the drilled hole does not penetrate through the spontaneous combustion ignition area, drilling continues to be conducted to the goaf needing to be treated, and drilling is completed; and 5, when the temperature sensor monitors that the temperature in the hole is larger than or equal to 50 DEG C, the drill hole is drilled to the ignition area, a water inlet pipe is arranged at the hole opening of the drill hole, and water is injected into the drill hole through the water inlet pipe. According to the treatment method, the purposes of cooling and blocking the spontaneous combustion area are achieved, drilling machine equipment protection, personnel safety guarantee, cost reduction and efficiency improvement are achieved, and the construction period is shortened.

Description

technical field [0001] The invention belongs to the technical field of vertical shafts, and in particular relates to a construction method for governance of a gob through a spontaneous combustion ignition zone. Background technique [0002] In the construction of multi-layer goaf treatment, spontaneous combustion of coal seams is often encountered. Under such construction conditions, only the conventional drilling construction method cannot be used to treat the goaf in the lower part of the spontaneous combustion zone, and the high temperature of the spontaneous combustion zone will cause unpredictable damage to the underground rock formation and drilling machinery. Under this circumstance, the problem of governance of goaf through spontaneous combustion zone has become increasingly prominent. For example, in some tunnel projects, the goaf is huge and involves multi-layer goaf treatment construction. In places where coal resources are abundant in the boundary, the situatio...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a goaf management construction method that passes through the spontaneous combustion fire zone, so as to at least solve the problems of increased construction difficulty and high cost of the current traditional construction method

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