摘要
以神华宁煤集团清水营煤矿富含水工作面安全开采为目标,采用地球物理勘查、理论解析、现场监测与开采实践等方法,揭示了复杂特厚煤层大倾角、大采高开采工作面覆岩载荷呈局部化非对称向顶板逐渐扩展的演化机制。工作面局部应力集中显著,超前支承压力影响范围变窄,周期来压步距为10～15m,采空区岩层发育呈现出明显变异性。
Taking the safe mining of the water-rich working face at Qingshuiying Coal Mine as a goal,adopted methods of the geophysical prospecting,theoretical analysis,in-situ monitor and mining practice to reveal the evolution mechanism of the complicated super-thick seam steeply inclined and large mining height working face overlying strata load＇s localized and asymmetric gradual expansion to the roof.The local stress of the working face is obviously concentrated,forepoling pressure＇s influence scale is narrowed,periodic weighting length is 10~15 m,and strata development at goaf is obvious variability.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2010年第11期1868-1872,共5页
Journal of China Coal Society
基金
国家自然科学基金资助项目(10772144)
教育部博士点基金资助项目(20096121110001)
陕西省教育厅重点实验室基金资助项目(09JS018)
关键词
复杂条件
大倾角、大采高
岩层运移与演化规律
局部化跃迁
complicated conditions
steeply inclined
large mining height
strata movement and evolution law
localized transition
