摘要
介绍了杜儿坪矿在３＃煤层过煤柱开采的经验，分析了煤柱下围岩受力状况，提出了邻近煤层过煤柱开采的方法。
Introduces the experience of coalgitting under pollar in 3# coal seam in Duerping,analyses the stress of surrounding strata under pillar,put forward a method of coalgetting under pillar in other nearby seam.
出处
《西山科技》
2000年第4期27-29,32,共4页
Xishan Science & Technology
关键词
邻近煤层
煤柱
围岩受力
开采
Nearby seam
Pillar
Stess of surrounding strata
Coalgetting
