摘要
河南某煤矿2301工作面的布置涉及到煤矿井筒煤柱开采保护问题,2301工作面主采矿区内2煤,同时还涉及今后3煤开采,为了保护煤矿井筒,提出了四个穿采方案设计,通过煤柱强度校核和安全分析,确定对井筒影响最小的开采方案,计算井筒的移动变形。开采实践证明井筒变形在范围之内,井筒是安全的。
The arrangement of the 2301 working surface in one coal mine in Henan involved the question about the protection of the shaft.2301 working surface mainly mines the 2coal-seam,and will involve the 3coal-seam in the future.In order to protect the shaft,four designs of strip-partial mining are proposed.And the mining plan with the smallest affect is determined and the distortion of the shaft is calculated through the examination of coal pillar intensity and the safe analysis.The mining practice proves that the shaft distorts are in the scope and the shaft is safe.
出处
《矿山测量》
2009年第3期44-46,86,共4页
Mine Surveying
