Exploring method of water liberation working surface of water-enriched mine area

A mining method and technology of working face, applied in drainage, surface mining, mining equipment and other directions, can solve the problems of casualties and economic losses, restrict the comprehensive technical and economic benefits of mines, etc., achieve high practical value, improve mine safety production level and Technical and economic benefits, the effect of a wide range of applications

Inactive Publication Date: 2013-04-17
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to relevant statistical data, coal mine water disaster has become a major disaster with the largest number of deaths, which not only caused a large number of casualties and major economic losses, but also severely restricted the further improvement of mine comprehensive technology and economic benefits.

Method used

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  • Exploring method of water liberation working surface of water-enriched mine area
  • Exploring method of water liberation working surface of water-enriched mine area
  • Exploring method of water liberation working surface of water-enriched mine area

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Embodiment Construction

[0031] Such as figure 1 Shown is a mining method for water-free working face in a water-rich mining area, the mining area includes a plurality of coal seams distributed from top to bottom, and the mining method includes the following steps:

[0032] Step 1. Determination of the water-rich layer and selection of the coal seam where the working face is located: Before mining the entire mining area, determine the location of the water-rich layer 1 according to the hydrogeological data of the mining area; Select a coal seam below 1 as the coal seam where the liberated working face is located, and use the coal mining face arranged at the bottom of the coal seam where the liberated working face is located as the liberated working face 2; between the liberated working face 2 and the water-rich layer 1 The spacing should be such that during the mining process of Jiefang working face 2 and after the roof of the working face of Jiefang working face 2 has fully collapsed, the formed roof...

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Abstract

The invention discloses an exploring method of a water liberation working surface of a water-enriched mine area, which comprises the following steps of: 1. determining a water-enriched layer and selecting a coal layer where a liberation working surface is located; 2. determining basic exploration parameters of the liberation working surface according to water inflow basic data of mine wells; 3. constructing a drainage system; 4. exploring the liberation working surface and synchronously draining: fully caving a top plate of the working surface in the exploration process of the liberation working surface to form a top plate fissure zone, correspondingly forming a water guiding channel between a gob and the water-enriched layer, and discharging the water in the water-enriched layer through the water guiding channel, a smooth groove of the working surface and the draining system; and synchronously observing the water inflow in the water-enriched layer and correspondingly determining the lasting time for exploration of the liberation working surface until the flood problem is solved; and 5. normally exploring the coal layer of the explored mining area. The invention has the advantagesof reasonable design, convenience of construction, low input cost, good effect and wide popularization prospect and can radically solve the flood problem in the production process of the water-enriched mining area from the headstream.

Description

technical field [0001] The invention belongs to the technical field of mining, and in particular relates to a mining method for a water-free working face in a water-rich mining area. Background technique [0002] With the continuous expansion of the scope and intensity of coal mining, many newly developed mining areas have encountered safety production problems caused by water-rich rock (coal) layers during the production process, such as: water penetration (outburst) on the working face, sand, mud Collapse and caving caused by roof mudification or sharp decrease in strength of cemented working face, roof frame caving when the working face crosses a fault, severe deformation and destruction of soft rock roadway, support failure (anchor cable, anchor rod falling off), large Sludge on the floor of the working face in the inclined coal seam, failure and slippage, etc. According to relevant statistical data, coal mine water disaster has become a major disaster with the largest ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/16E21F16/00
Inventor 伍永平曾佑富
Owner XIAN UNIV OF SCI & TECH
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