摘要
煤矿地下水库是西部矿区煤炭开采水资源保护与利用的重要技术手段,而储水结构坝体稳定性是地下水库安全建设及稳定运行的核心评价指标。以西部矿区上湾煤矿22101地下水库为工程背景,采用数值模拟的方法,分析不同震源位置的矿震动载对煤矿地下水库煤柱坝体与人工坝体的影响。结果表明:煤柱坝体与T型人工坝体在受矿震动载作用后,高应力区范围显著增大、应力集中程度明显提高且走向方向的塑性区范围有所增加;与远场矿震动载作用相比,近场矿震动载的影响更加明显;处于迎波面的坝体受影响较大。在远场循环动载扰动下,仅初始扰动对T型人工坝体强度明显削弱。
The underground reservoir in coal mines is an important means of protecting and using the water resources of coal mines in western mining areas,and the stability of water storage structure dam is the basic rating index for the safe construction and stable operation of the underground reservoirs.Based on the engineering background of 22101 underground reservoirs at the Shangwan coal mine in the western mining region,the influence of mine vibration load at different focal locations on the coal pillar dam and artificial dam of the underground coal mine reservoir is studied with theoretical analysis and numerical simulation.The results show that the range of high⁃stress zone,stress concentration,and the range of plastic zone in the strike direction increase significantly after the coal pillar dam and T⁃shaped artificial dam are loaded by the mine vibration.The effect under the vibratory load of the near⁃field mine is more apparent,than that in a far⁃field mine,especially the dam body on the facing wave.For the far⁃field cyclic dynamic load disturbance,only the initial disturbance considerably weakens the force of the T⁃type artificial dam.
作者
武洋
姚强岭
吴宝杨
吴城乐
WU Yang;YAO Qiangling;WU Baoyang;WU Chengle(State Key Laboratory of Water Resource Protection and Utilization in Coal Mining,National Institute of Clean and Low Carbon Energy,Beijing 102211,China;School of Mines,China University of Mining and Technology,Xuzhou,Jiangsu 221116,China;Shendong Coal Technology Research Institute,China Energy Investment,Yulin,Shaanxi 719000,China)
出处
《采矿与安全工程学报》
EI
CSCD
北大核心
2024年第3期561-569,共9页
Journal of Mining & Safety Engineering
基金
国家自然科学基金青年基金项目(51674284)
国家能源集团科技创新项目(GJNY⁃18⁃80)
神东矿区煤矿地下水库智能监测与安全防控研究及示范项目(GJNY⁃21⁃26)。
关键词
矿震
动载
地下水库
煤柱坝体
人工坝体
mine earthquake
dynamic load
underground reservoir
pillar dam
artificial dam body
