A deep mine hydrothermal geothermal energy circulation and coal seam cooperative mining system
A geothermal energy and hydrothermal technology, applied in geothermal energy power generation, heat collectors using groundwater as working fluid, ground mining, etc., can solve the problems of low economic benefits, achieve high economic benefits, broad application prospects, unique technology advantage effect
Active Publication Date: 2022-01-04
CHINA UNIV OF MINING & TECH
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[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a hydrothermal geothermal energy circulation and coal seam cooperative mining system in deep mines. While mining deep coal seams, the existing underground working face, roadway, etc. are used to relieve pressure Spatial layout of geothermal energy extraction equipment and systems in aquifers can not only solve the problem of low economic benefits caused by coal mining alone, but also efficiently exploit clean geothermal energy resources, which has good economics
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[0032] At present, the mining depth of the main coal seam of a certain mine reaches -1300m, and the designed production capacity of the mine is 1.5 million t / a. There is medium-strong Ordovician limestone water in the lower 50-200m of the coal seam. The thickness of the coal seam is 3m, and the coal seam bulk density is 1.4 t / m 3 .
[0033] The present invention is a hydrothermal type geothermal energy circulation and coal seam cooperative mining system in deep mines, and its specific steps are as follows:
[0034] In the first step, according to the mining geological conditions of the deep mine, combined with the production capacity of the mine, the length of the coal mining face is designed to be 150m, the advancing length of the working face is 2100m, the "four-six" system, and 330 days of production a year;
[0035] In the second step, according to the hydrogeological occurrence characteristics of the coal seam adjacent to the coal seam containing (separated) water layer,...
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The invention discloses a hydrothermal type geothermal energy circulation and coal seam cooperative mining system in deep mines. A geothermal energy circulation mining system is added to the coal seam mining system to form a thermal-coal cooperative mining system. Gob-side retaining, and drill holes for thermal energy extraction and cold water recharge storage to the adjacent aquifer in the gob-side retaining, including drainage boreholes and recharge boreholes, and transportation pipelines are arranged in the boreholes, correspondingly formed in the The heat energy extraction pipeline in the gob-side roadway of N# working face, the cold water recharge pipeline laid in the gob-side roadway of 1# working face, the heat energy extraction pipeline and the cold water recharge pipeline are connected to the thermal energy treatment on the ground station, forming a geothermal energy cycle mining system, and the N is the number of coal seam mining faces. The invention can realize the comprehensive, coordinated and green mining of hydrothermal geothermal energy and coal resources in deep mines, and has broad application prospects.
Description
technical field [0001] The invention belongs to the technical field of mine energy exploitation, and in particular relates to a deep mine hydrothermal geothermal energy cycle and coal seam cooperative mining system, and is especially suitable for clean mining and recycling of deep mine hydrothermal geothermal energy. Background technique [0002] Coal is the main energy source in our country. The shallow coal resources in the central and eastern regions of my country are almost exhausted, but the deep coal resources are relatively rich. However, due to the influence of "four highs and one disturbance" in deep mining, mine disasters are frequent and mining equipment requires high requirements. The difficulty is high, and the production cost of the mine increases, which seriously restricts the efficient production of deep mines and the coordinated development of the mining environment. Considering the influence of technology, economy, safety and other factors comprehensively, a...
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IPC IPC(8): F24T10/20E21C41/18
CPCF24T10/20E21C41/18Y02E10/10
Inventor 张吉雄孙强周楠李猛刘恒凤
Owner CHINA UNIV OF MINING & TECH