Study on Deformation and Fracture Evolution of Underground Reservoir Coal Pillar Dam under Different Mining Conditions
نویسندگان
چکیده
Coal mine underground reservoir water storage technology is an effective technical way to achieve high efficiency of coal mining and protection resources. The stability pillar dam plays a decisive role in the safe stable operation reservoirs. Mining adjacent working faces long-term erosion are main influencing factors dam. In this paper, fluid-solid coupling calculation model for deformation evolution was established by FLAC3D numerical simulation software brine Lingxin Mine Shenning group as engineering background. paper studied systematically deformation, failure, stress with pillars soaked long time under different face inclining length, width, height, pressure. results showed that degree failure continued increase continuous advancement face. plastic zone increased approximately 23.53%, maximum vertical 95.78%, 68.18%. influence each factor on overburden strata quite different. development range zone, stress, were increasing inclined length height. width would lead decrease stress. pressure deformation. It can be seen affecting height zone. This study reveals law fracture conditions, which provide reference design reservoir.
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ژورنال
عنوان ژورنال: Geofluids
سال: 2022
ISSN: ['1468-8115', '1468-8123']
DOI: https://doi.org/10.1155/2022/2186698