A kind of gas drainage drilling and sealing method
A technology for gas drainage and hole sealing, which is applied in the direction of gas discharge, drill pipes, drill pipes, etc., and can solve problems such as incomplete methods, time-consuming, gas leakage, etc.
Active Publication Date: 2020-09-04
PINGDINGSHAN TIANAN COAL MINING +2
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Problems solved by technology
[0004] To sum up, the problems existing in the existing technology are: the existing gas drainage method discharges the gas inside the coal area through drilling and sealing, but the method is not perfect, the speed of gas drainage is relatively slow, and the drilling process It takes a lot of time, and problems such as the inability to effectively detect the gas concentration in the coal area have been to be solved, and the sealing of the hole is not tight enough, and there is gas leakage, which limits the production of the coal mine
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[0055] In order to further understand the content, characteristics and effects of the present invention, the following examples are cited hereby, and in conjunction with the attached figure 1 And attached figure 2 The details are as follows.
[0056] The structure of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0057] Such as figure 1 As shown, the gas drainage borehole sealing method provided in the embodiment of the present invention includes the following steps:
[0058] S101, selecting a drilling location;
[0059] S102, turn on the switch, and the drilling machine starts to work;
[0060] S103, drill into the ground to a certain depth, the gas concentration detector can detect the gas concentration inside the coal area, and can display it on the display instrument;
[0061] S104, when the gas concentration displayed by the display instrument reaches a value, turn on the exhaust fan to extract the gas and st...
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The invention belongs to the field of gas extraction manufacturing industry, and discloses a drilling and sealing method for gas extraction, which includes: selecting the drilling position; turning on the switch, and the drilling machine starts to work; drilling into the ground to a certain depth, and detecting the gas concentration The device can detect the gas concentration inside the coal area and display it on the display instrument; when the gas concentration displayed by the display instrument reaches the value, the exhaust fan is turned on to extract the gas and store it in the gas storage box; the slurry is placed in the slurry storage tank, and the humidity The detector detects the humidity of the grout, and the grout will enter the drill hole from the grouting pipe, and the drilling machine will pick up, and the humidity of the grout will be high, and the vacant position will be quickly filled. The invention solves the problem of clogging caused by coal cuttings during the gas extraction process, can effectively ensure the humidity of the slurry during the hole sealing process, does not cool rapidly during the injection into the drilling process, and avoids lax sealing of the drilling holes , orifice leakage phenomenon.
Description
technical field [0001] The invention belongs to the field of gas extraction manufacturing industry, and in particular relates to a drilling and sealing method for gas extraction. Background technique [0002] Gas is an associated gas of coal seam, which gushes out of coal seam in different forms during coal mining, and is the most common harmful gas in mines. It is embodied in two aspects: ①The gas has the danger of combustion and explosion, and ②The danger of coal and gas outburst. Moreover, they are unpredictable. With the continuous extension of coal mining, the amount of coal mine gas emission will also increase, which seriously limits the production progress of coal mines and greatly restricts the safe production of coal mines. [0003] When the gas concentration reaches a very high value, even a single spark may cause a serious fire, and the coal seam gas disaster has a large degree of damage and many casualties. The existing gas drainage uses the method of drilling a...
Claims
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IPC IPC(8): E21F7/00E21B33/13E21B47/00E21B17/00
Inventor 高明忠张建国吕有厂王满王英伟张泽天
Owner PINGDINGSHAN TIANAN COAL MINING