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| Structural characteristics and stress distribution of overlying strata in inclined stope under multi-factor coupling conditions |
| Xia Lei1, Qiang Wei1, Xu Lei1, Ren Xuhua2 |
| 1. Baodian Mine, Yanzhou Energy Group Co., Ltd., Jining 273513, China; 2. College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, China |
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Abstract In order to analyze the overlying strata structure characteristics of inclined stope under multi-factor coupling conditions, No.3308 Face of one Mine in Shandong Province was taken as the research background, the overlying strata structure characteristics of inclined stope were studied from three aspects: the fracture law of overlying strata, the distribution characteristics of overlying strata stress field and the evolution law of plastic zone by using the comprehensive research methods of field investigation and numerical simulation. The caving of overlying strata caused by inclined mining along the working face made the overall shape of the stope appear elliptical distribution, while the caving of overlying strata caused by mining along the working face made the overall shape of the stope appeared trapezoidal distribution, and the plastic zone appeared elliptical shape as a whole. Moreover, due to the layout of the working face along the fault and the accumulation of gangue, the roof of the stope presented a more complicated stress environment. Combined with the previous analysis and the actual situation on site, the roof control suggestions were proposed.
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| [ 1 ] 伍永平，贠东风，解盘石，等. 大倾角煤层长壁综采:进展、实践、科学问题[ J ]. 煤炭学报，2020，45（ 1 ）：24 - 34.
[ 2 ] 解盘石，屈利利，伍永平，等. 倾斜煤层近距离煤层群长壁采场顶板破断机理[ J ]. 煤炭科学技术，2022，50（ 2 ）：65 - 74.
[ 3 ] 肖家平，杨 科，刘 帅，等. 大倾角煤层开采覆岩破断机制研究[ J ]. 中国安全生产科学技术，2019，15（ 3 ）：75 - 80.
[ 4 ] 罗生虎，田程阳，伍永平，等. 大倾角煤层长壁开采覆岩走向受载与破坏特征[ J ]. 煤炭学报，2021，46（ 7 ）：2 227 - 2 236.
[ 5 ] 窦林名，田鑫元，曹安业，等. 我国煤矿冲击地压防治现状与难题[ J ]. 煤炭学报，2022，47（ 1 ）：152 - 171.
[ 6 ] 文志杰，景所林，宋振骐，等. 采场空间结构模型及相关动力灾害控制研究[ J ]. 煤炭科学技术，2019，47（ 1 ）：52 - 61. |
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