Shandong University

Ning Jiang

Jun Wang

Yunliang Tan

Qiang Xu

Jianguo Ning

Xuesheng Liu

Deyuan Fan

Yangyang Li

Dan Kang

Yang Qiao

Shilin Song

Liming Yin

Wenbin Sun

Yunzhao Zhang

Xinguo Zhang

Qingheng Gu

Zhixue Zhang

Yin Liu

Shupeng Zhang

Jinhai Zhao

Changjian Zhou

Juntao Chen

Shichuan Zhang

The present disclosure provides a comprehensive utilization method and test equipment for surface water, a goaf and geothermal energy in a coal mining subsidence area. The method comprises the following steps: determining a geothermal water collection area, arranging heat energy exchange equipment in a main roadway, and arranging a geothermal water extraction system, wherein the geothermal water extraction system comprises geothermal wells, extraction pipelines and tail water reinjection pipelines, the extraction pipelines are connected with the heat energy exchange equipment, and the tail water reinjection pipelines are connected with a water outlet of the heat energy exchange equipment; arranging a water channel on the surface, and arranging a drainage system on a subsidence trough to guide surface water to flow underground; and controlling directional and ordered flow of surface water through the coal mining subsidence area formed by ground mining to achieve sustainable mining of underground water.

Comprehensive utilization method and test equipment for surface water, goaf and geothermal energy in coal mining subsidence area

A rock mechanics test system with impact loading-confining pressure unloading and its usage method. The test system includes bearing frame unit, axial compression loading unit, impact loading unit and confining pressure loading unit. The bearing frame unit includes pedestal, column and cross beam. The column is vertically installed on both sides of the upper surface of the pedestal, and the cross beam is horizontally fixed on the upper part of the column. The axial compression loading unit is fixed at the middle position of the upper surface of the pedestal and is used to exert the axial bottom-up pressure to the sample. The impact loading unit is fixed on the cross beam and is used to exert the axial top-down impact load on the sample.

Rock impact loading-unloading confining pressure test system and usage method therefor

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Qingdao, China

Ning Jiang