摘要
采用钻孔应力计实测研究得出了侧向支承压力峰值距离煤壁10 m,确定煤柱宽度5.0m。回采期间,沿空煤柱受回采影响范围和程度均有减小趋势。在该矿地质条件下,通过合理的煤柱宽度选择,在煤柱进入采空区时仍会保持部分稳定未破坏区域。
Using borehole stress gauges to measure and research that the lateral abutment pressure peak is from coal wall 10 m,and determine that the coal pillar width is 5.0 m.Gob-side entry coal pillar influenced by mining extent are reduced tendency.Gob-side entry coal pillar will remain stable part without damaging area through a rational choice coal pillar width under the mine geological conditions.
出处
《煤矿安全》
CAS
北大核心
2012年第11期136-138,共3页
Safety in Coal Mines
关键词
沿空掘巷
应力降低区
小煤柱
钻孔应力计
road driving along next goaf
stress reduce area
small pillar
borehole stress
