摘要
围绕谢桥矿1161(3)工作面特定地质条件,进行了相应大采高沿空掘巷的小煤柱尺寸留设、小煤柱围岩应力场和位移场特征的数值计算。对比不同采深的巷道围岩应力场和位移场特性,给出了不同采深煤柱尺寸留设建议,得出该地质条件下采深500 m应取3～5 m宽度煤柱,采深700 m应取5～7 m宽度小煤柱,超过1 000 m的开采深度煤柱宽度应在7 m以上。
Base on the geology condition of XieQiao mine 1161（3）face,dimension of the small coal pillar of corresponding gobside driving entry in large mining height face,characteristic of stress field and displacement field is calculated.Compared with the characteristic of stress field and displacement field of the drift with different mining depth,it is proposed that-500 m mining depth should take 3~5 m width of the pillar,-700 m mining depth should take 5~7 m width of the small pillar,above-1000 m mining depth should take more than 7m width of coal pillar.
出处
《有色冶金设计与研究》
2012年第1期5-8,18,共5页
Nonferrous Metals Engineering & Research
基金
国家自然科学基金青年科学基金资助项目(50904064)
煤炭资源与安全开采国家重点实验室自主研究课题资助(SKLCRSM09X03)
关键词
大采高
小煤柱
沿空掘巷
数值计算
large mining height
small coal-pillar
gob-side entry driving
numerical calculation
