A method for protecting a wellbore drain hole
A technology for weep hole and wellbore, which is applied in drainage, earthwork drilling, wellbore/well components, etc. It can solve the problems of inconvenient operation and unsatisfactory anti-blocking effect, achieve convenient operation, improve work efficiency, and prevent clogged drainage The effect of water holes
Active Publication Date: 2018-02-23
CHINA COAL NO 5 CONSTR
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Problems solved by technology
Although this kind of measure can prevent the clogging of the drain hole to a certain extent, its anti-clogging effect is not ideal, and the operation is inconvenient
Method used
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[0015] Such as figure 1 with figure 2 As shown, a method for protecting the wellbore weep hole includes a cover 5, which completely covers the weep hole 2 of the wellbore; a protective cover 4 is installed on the upper end of the cover 5; the center of the cover 5 and the protective cover 4 A reserved hole is provided, and a core tube 1 is arranged in the reserved hole, and reinforcing ribs 6 are evenly provided on the core tube 1 under the cover 5; Cover, a steel wire rope 3 passes through the core pipe from the upper and lower end covers, and the steel wire ropes outside the upper and lower end covers are provided with clips 7.
[0016] Taking the south air inlet shaft project of Tangkou Coal Industry Co., Ltd. as an example, the drain hole is Φ325X12mm. The palpable cover is circular and made of δ30mm×Φ350mm steel plate; the protective cover is circular and made of δ50mm×Φ330mm steel plate; the diameter of the reserved hole is 159mm; the reinforcing rib is made of A ste...
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The invention discloses a method for protecting a wellbore drain hole and relates to the technical field of water hole protection. The method adopts the following equipment, the equipment includes a cover, which completely covers the drain hole of the wellbore; a protective cover is installed on the upper end of the cover; Core tube, the core tube under the cover is uniformly provided with reinforcing ribs; the upper end of the core tube is installed with an upper end cover, and the lower end of the core tube is installed with a lower end cover, and a steel wire rope passes through the core tube and passes through the upper and lower end covers. Clips are provided on the wire rope outside the cover; the specific process is as follows: 1) Install the cover; 2) Control the height of the drain pipe; 3) Protect the drain pipe when the working face is cleared; 4) Protect the drain pipe when the working face is leveled. Effectively prevent broken gangue from clogging the drain hole; easy to operate and improve work efficiency.
Description
technical field [0001] The invention relates to the technical field of water hole protection, in particular to a method for protecting a wellbore water hole. Background technique [0002] During the shaft construction process, the drain hole of the shaft is very important, especially the protection of the drain hole before blasting the shaft and during gangue discharge. When the drain hole is clogged, it is necessary to quickly take measures to penetrate the hole. Some existing coal mines adopt self-made steel bars to be put into the drain holes to prevent the drain holes from being blocked by the crushed gangue during blasting and gangue discharge. Although this kind of measure can prevent the weep hole from being blocked to a certain extent, its anti-blocking effect is not ideal, and it is inconvenient to operate. Contents of the invention [0003] In order to overcome the above-mentioned shortcomings of the prior art, the present invention provides a method for protec...
Claims
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IPC IPC(8): E21B33/03E21F16/00
Inventor 刘波毕鹏罗瑞竹辛理想张坤孟方
Owner CHINA COAL NO 5 CONSTR