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Downhole stereo rapid water drainage method through the combination of horizontal drilling holes and vertical drilling holes

A technology of through-layer holes and layer-by-layer holes is applied in drainage, mining equipment, earthwork drilling, etc. It can solve the problems of difficulty in obtaining rapid and large-scale hydrophobic effects, and difficulty in achieving high efficiency, and shorten the construction period and drainage time. Reasonable and scientific settings, the effect of reducing water pressure

Inactive Publication Date: 2015-10-07
ANHUI UNIVERSITY OF ARCHITECTURE
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Problems solved by technology

In the former method, it is difficult to achieve high efficiency because the hydrogeological characteristics are not considered. The latter relies on downward air pressure to drain upwards, and it is difficult to obtain a rapid and large amount of water repellent effect.

Method used

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  • Downhole stereo rapid water drainage method through the combination of horizontal drilling holes and vertical drilling holes
  • Downhole stereo rapid water drainage method through the combination of horizontal drilling holes and vertical drilling holes
  • Downhole stereo rapid water drainage method through the combination of horizontal drilling holes and vertical drilling holes

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Embodiment Construction

[0024] The present invention proposes a downhole three-dimensional rapid water drainage method that combines bedding holes and through-bedding holes, comprising the following steps:

[0025] S1. Detect the hydrogeological conditions of the area to be exploited by conventional technical means in this field, determine the distribution of strata, the thickness of the aquifer, the high water pressure layer, the position of the water-rich area and the water-poor area in the aquifer, and according to the detection results as follows The confined-submerged intact well formula calculates the expected water inflow for each water-rich zone:

[0026] Q=1.366k(2H-m)m / (lg(R+r 0 / r 0 ));

[0027] Among them: Q is the predicted mine water inflow, and its unit is m 3 / d; k is the permeability coefficient, and its unit is m / d; H is the water column height, and its unit is m; m is the thickness of the aquifer, and its unit is m; R 0 In order to quote the influence radius, its unit is m; R i...

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Abstract

The invention discloses a downhole stereo rapid water drainage method through the combination of horizontal drilling holes and vertical drilling holes. A plurality of main horizontal drilling holes are transversely arranged in an aquifer, a plurality of branch horizontal drilling holes extend out from the tail ends of the main horizontal drilling holes, the main horizontal drilling holes and the branch horizontal drilling holes avoid a poor-water area and pass through a rich-water area, a plurality of vertical drilling holes are arranged upwardly from the top plate of a tunnel and vertically reach to the place where the horizontal drilling holes cannot reach and the rich-water area with large expected water inflow, a stereo drainage network is formed through the combination of the plurality of horizontal drilling holes and vertical drilling holes, and water in a stope caving zone, a water guide crack zone, and a bottom board damage influence zone in the stoping influence range of a top bottom board can be clearly drained to a large extent. According to the method, the horizontal drilling holes and the vertical drilling holes are reasonable and scientific in design, the water pressure is effectively reduced, the drainage effect is improved, the construction period is greatly shortened, and the exploitation safety of the ore bed threatened by flood damage.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to an underground three-dimensional quick drainage method using a combination of bedding holes and piercing holes. Background technique [0002] Water damage is one of the five natural disasters in mines, and control measures such as prevention, blocking, dredging, drainage, and interception are usually taken. When the ore-bearing layer is close to the aquifer or in direct contact with the aquifer, active dredging measures should be taken. The technology of gas extraction using perforated holes and bedding holes is widely used. Drainage methods such as Yunshun bedding drilling and bedding drilling are adopted in the comprehensive gas control of fully mechanized mining face in Zhangji Coal Mine. On the 713 working face of Qinan Coal Mine, the dense upward penetration drilling combined with the bedding drilling gas drainage technology is adopted. The penetration hole group on the flo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F16/00
Inventor 杨本水李佩全姚燕生刘洁高宣以琼刘满才汪敏华翟恩发
Owner ANHUI UNIVERSITY OF ARCHITECTURE
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