摘要
为掌握厚煤层高强度综放开采覆岩结构及矿压显现特征,以长平矿2308工作面为工程背景,运用理论分析、数值模拟、现场监测等方法对其覆岩结构和矿压显现特征进行研究。结果表明,2308工作面的矿压显现规律主要由主关键层和亚关键层共同控制,分别在顶板下位形成短组合悬臂梁结构,上位形成铰接岩梁结构;下位短组合悬臂梁+上位铰接岩梁结构是造成工作面存在大小周期来压的直接原因。
In order to understand overlying strata behavior laws and roof structure of fully mechanized mining face in thick coal seam, using field observation, theoretical analysis and numerical simulation, taking 2308 work face of Changping Mine as project background, studied the roof structure and mining pressure characteristics. The results showed that the main key strata and inferior key strata controlled strata behavior laws, the structure of short cantilever-articulated rock beam was formed at lower level of roof and hinge beam structure was formed at upper level. This combination of structures was believed to have caused strengthened and weak periodic weighting.
出处
《中国煤炭》
北大核心
2017年第6期72-75,共4页
China Coal
基金
国家自然科学基金(51504136)
关键词
厚煤层
短组合悬臂梁
铰接岩梁
周期来压
thick coal seam, short cantilever beam structure, hinge structure, periodic weighting
