Abstract
Water supply prediction and control is one of the key issues in exploitation of coal mine underground reservoirs (CMUR). In order to investigate the water supply for underground reservoirs in coal mines, the aquifers were classified into three types (types I, II, and III) according to the relative location of aquifers. The discrete element fluid structure coupling numerical simulation model is constructed according to the classification results. The numerical simulation parameters are inversed based on the surface subsidence data and the advance support pressure, and then, the disturbed characteristics and water pressure variation law of different types of aquifers are studied. The research results show that the maximum water inflow of type III, type II, and type I aquifers is 739 m3/h, 377 m3/h, and 279 m3/h, respectively. The dynamic calculation process of underground reservoir capacity under mining disturbance is refined, and the regulation and storage methods of underground reservoir are preliminarily put forward.
Highlights
With the implementation of China energy strategy, the western mining area has become the “main battlefield” for the development and utilization of coal resources
The ecological environment problem, especially the water resources protection in western mining areas, has become the major problem faced by the coal industry [1,2,3,4]
The Discrete Element Method (DEM) believes that the rock mass is composed of rock blocks and discontinuous surfaces between the blocks
Summary
With the implementation of China energy strategy, the western mining area has become the “main battlefield” for the development and utilization of coal resources. Coal seams in the western mining areas are typically characterized with shallow burial depth, big thickness, variable aquifer locations, and uncertain aquifer layers [18, 19], which brings big problems in the prediction of underground reservoir water sources. When the fissures communicate with the aquifer and develop into water-conducting channels, it will impose threat to the aquifer, which is very important for water supply during the construction of underground reservoirs in coal mines. It is necessary to generalize the classification of the occurrence modes of aquifers, link them with the development of mining-induced fissures, and study its disturbance characteristics under different conditions to provide a basis for the prediction of water source in underground reservoirs.
Sign-in/Register to view highlights & summary 
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call