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Frontiers of Engineering Management

ISSN 2095-7513

ISSN 2096-0255(Online)

CN 10-1205/N

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Front. Eng    2016, Vol. 3 Issue (1) : 59-66    https://doi.org/10.15302/J-FEM-2016010
ENGINEERING MANAGEMENT REPORTS
Technology Development and Engineering Practice for Protection and Utilization of Water Resources in Coal Mining in Western China
Da-zhao Gu()
State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, Science &Technology Development Department, Shenhua Group Corporation Limited, Beijing 100011, China
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Abstract

Shanxi, Shaanxi, Inner Mongolia, Ningxia, and Gansu (hereafter generally referred as “the Western Area”) are major coal-producing areas in China due to rich coal resources and good mining conditions. However, the Western Area has a serious water shortage. The surface evaporation is huge and a great amount of mine water generated in coal mining is evaporated and lost after discharging to surface. In order to protect and utilize the water resources during large-scale coal mining in the Western Area, Shenhua Group has put forward a technological idea to store mine water in underground mined areas and successfully researched and developed the coal mine underground reservoir technology by solving the technical difficulties of water source prediction, reservoir site selection, reservoir capacity design, dam construction, safety guarantee, water quality control and so on through 20 years of exploration. Now Shenhua Group has successfully established a batch of reservoir in the Shendong Mining Area, obtaining great economic and social benefits. The technology is also extended to other western mining areas, providing an effective path for harmonic mining of coal and water resources in western China.
Keywords Western Mining Area      coal mining      water resources      coal mine underground reservoirs     
Corresponding Author(s): Da-zhao Gu   
Online First Date: 09 May 2016    Issue Date: 26 May 2016
 Cite this article:   
Da-zhao Gu. Technology Development and Engineering Practice for Protection and Utilization of Water Resources in Coal Mining in Western China[J]. Front. Eng, 2016, 3(1): 59-66.
 URL:  
https://academic.hep.com.cn/fem/EN/10.15302/J-FEM-2016010
https://academic.hep.com.cn/fem/EN/Y2016/V3/I1/59
Fig.1  The process for the generation of mine water in coal mining.
Fig.2  Technical idea sketch about coal mine underground reservoir.
Fig.3  Physical simulation on overburden rock fissures forming water cracks for aquifer.
Fig.4  Numerical and physical simulations on deformation of different reservoir dams under earthquake conditions.
Fig.5  Comparison of predicted value and actual value of water inflow in the 1−2 coal seam of Shangwan Coal Mine.
Fig.6  Sketch of reservoir capacity calculation parameters of underground reservoir.
Fig.7  Sketch of underground reservoir expansion technology.
Fig.8  Construction process of artificial dam.
Fig.9  Coal mine underground reservoir safety triple-prevention and control technology.
Effluent parameters Reuse Water Standard Removal ratio
Suspended matter/(mg·L−1) 5–15 30 60%–95%
COD/(mg·L−1) 7.8–31 50 60%–86%
Total hardness/(mg·L−1) 206–334 450 8%–40%
Tab.1  Main Pollutants Removal Effect of Mine Water
Fig.10  “Three-in-one” mine water quality control technology.
Technology field Patent description Patent No.
Water source prediction A method for monitoring the dynamic fissures of the mining working face by miner ZL201210134981.X
Reservoir site selection A method for determining the location of the underground reservoir ZL201210256970.9
Reservoir capacity calculation and capacity expansion technology A method for determining capacity of the mine underground reservoir ZL201210256976.6
Cleaning method and equipment for base plate of the air return way of the working face at super-great mining height ZL201110220548.3
Dam construction A distributed underground reservoir and its construction method ZL201210256979.X
An artificial water retaining dam of the coal mine underground reservoir and the connection method with the coal pillar dam ZL201310354100.X
An opencast coal mine underground reservoir ZL201210473021.6
Safety Guarantee An safety monitoring method for the underground mine reservoir ZL201210473327.1
Distributed underground reservoir group and migration methods of the mine water within the group ZL201210473118.7
Detection device, equipment and method for residual capacity of the coal mine underground reservoir ZL201310303259.9
Water quality control A method for distributing storage of underground mine water ZL201210133605.9
A method for distribute utilization of underground mine water ZL201210134162.5
Tab.2  Major Authorized Patents Related to the Coal Mine Underground Reservoirs
Fig.11  Demonstration project of the distributed underground reservoir in Daliuta Coal Mine.
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[1] Xiao-jun Liu,Zhen-yu Guo,Chao Ding,Han-liang Fu. Industrial Structure Adjustment of Shaanxi Province under the Limited Water Resources Condition[J]. Front. Eng, 2014, 1(4): 378-384.
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