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Construction method of large diameter underground gas drainage pipeline system

A gas drainage and pipeline system technology, which is applied in the direction of gas discharge, earthwork drilling, pipeline laying and maintenance, etc., can solve the problems of gas pipeline suspension construction and so on

Active Publication Date: 2018-07-06
CHINA SHANXI SIJIAN GRP
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Problems solved by technology

[0003] In order to solve the technical problem of the suspension construction of the gas pipeline, the present invention provides a construction method for the large-diameter underground gas drainage pipeline system

Method used

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  • Construction method of large diameter underground gas drainage pipeline system

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Embodiment Construction

[0020] A large-diameter underground gas drainage pipeline system construction method,

[0021] 1 measurement set-out

[0022] Before the construction of the bolt and anchor cable, it is necessary to measure and set out the line according to the design. Before the line is set out, the specific position of the pipeline is determined according to the design requirements, and then the line is set out according to the baseline given by the mine. When laying out the line, based on the reference line and the intersection point of the two crossing reference lines, use the cross point of the laser line thrower to align with the intersection point of the reference line and make the two cross lines overlap with the crossing reference line, and then use a tape measure to measure at the top of the roadway And locate the intersection of the pipes. Use this intersection point to cooperate with the laser line thrower, mine straightness meter, and engineering wire rope to set out the line. Af...

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Abstract

The invention relates to a gas pipeline construction method, in particular to a large-diameter underground gas drainage pipeline system construction method. The method solves the technical problem of suspending construction of a gas pipeline. The method includes the steps that preparation before construction is carried out, firstly, measurement and paying-off are carried out, then a steel pipe section or the two ends of a pipe fitting are provided with flanges in a welded mode in a well, anti-corrosion processing is carried out, the pipe section is conveyed to an underground installation place through a mine car, then the pipe section is lifted to an installation height through a chain block, the pipe section is hung on an anchor rod or anchor cable installed in advance through a steel wire rope and a tensioner, a flange of an adjacent pipe or a pipe fitting or a valve is fastened through a bolt, the middle of flange is cushioned with an asbestos rubber pad, a sealing effect is achieved, and ultimately, a pipeline pressure test, test running and handing over are carried out. The standard coal mine tunnel gas pipe suspending construction method is provided, and the technical problems that an existing gas pipeline system is installed on the ground and influences bottom equipment and passing of staff are solved.

Description

technical field [0001] The invention designs a gas pipeline construction method, specifically a large-diameter underground gas drainage pipeline system construction method. Background technique [0002] As the country pays more and more attention to safety production, more and more coal mines carry out safety production technical transformation projects. Gas control is the key work in coal mining, and gas pre-drainage is one of the effective measures. The main way of gas pre-drainage is to concentrate and conduct the gas in the working face through a large number of gas pipelines. The traditional gas drainage pipeline system is to install the pipeline on the bracket 500mm above the ground of the roadway, which occupies the very tight roadway space itself. There are many machinery, vehicles and pedestrian passages arranged in the coal mine roadway, so the gas pipeline actually brings certain obstacles to other constructions in the roadway. Therefore, we consider hoisting the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L1/028E21F7/00
CPCE21F7/00F16L1/028
Inventor 张兵王文涌李芳祁勇籍跃奎罗旭
Owner CHINA SHANXI SIJIAN GRP
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