Observation method for mine rock body drill hole plugging and gas extracting integrated system

Abstract

The invention discloses an observation method for a mine rock body drill hole plugging and gas extracting integrated system. According to the observation method for the mine rock body drill hole plugging and gas extracting integrated system, the problems that in the prior art, the sealing effect of a mine rock body drill hole is poor, the extraction cost is high, and gas is difficult to collect are solved, and the effects that the stability of the plugging process and the gas extracting process is improved, and the sealing performance is enhanced are achieved. According to the technical schemeof the observation method, the observation method comprises the following steps that the gas extracting drill hole is drilled; a test probe is mounted and connected with a drill rod, and the test probe is pushed in a squeezed mode to a designated extracting area through a drill rig; the drill hole is sealed; a pressure-tight test is conducted; gas parameters are measured; and a measuring system is connected, a third switch is turned on, gas enters a collection tube and enters the measuring system through a communicating pipe, and after a gas pressure gauge is stable, the showing number on thegas pressure gauge is read and compared with a reading of an electronic pressure gauge.

Description

technical field [0001] The invention belongs to the technical field of drilling and drainage of rock mass in mines, and in particular relates to an observation method of an integrated system for gas plugging and drainage of drilling rock mass in mines. Background technique [0002] Gas pressure and gas content are the key basic parameters in the study of mine coal and gas outburst, gas gushing, and gas drainage. Determination of gas content. [0003] According to the relevant regulations of the coal industry standard, the pressure measurement drilling site should be selected in the roadway adjacent to the coal seam, and generally the upward drilling should be drilled in the complete and hard coal rock. The traditional way of plugging boreholes is to fill the borehole with concrete filling material or install a baffle in the borehole to form a sealed space, and pour the filling material into the sealed space through a separate pipeline. [0004] Since the above-mentioned pl...

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Problems solved by technology

[0004] Since the above-mentioned plugging method uses solid media as the plugging medium, cracks are prone to occur after the solid medium is solidified, and sometimes the solid material cannot seal the rock mass cracks around the drilling wall of the corresponding section. Sectional sealing method, poor sealing effect; in addition, the integration degree of gas plugging and drainage equipment is low, and the gas drainage process cannot be effectively monitored, and the traditional gas drainage systems are mostly disposable consumables, which generally cannot be reused , increasing the cost of gas extraction

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