摘要
为了提高煤炭资源回收率、减少煤柱损失,尽可能采用无煤柱开采技术。文章先就地下煤矿开采中的壁式条带布置工作面方式、工作面间煤柱的去留进行论述,并以实例介绍了三种沿空留巷(掘巷)方式的具体做法(分别为筑墙强支留巷法、恒阻大变形预应力锚索留巷法预留沿空掘巷法)进行特点分析,能为各类煤矿因地制宜选用不同方式提供借鉴。
To improve coal resource recovery rate and reduce pillar loss, mining without coal pillars should be used more. The paper first introduces layout pattern of wall-type strip working faces and go-or-stay of stage coal pillars. Through ease study, it analyzed three entry retaining ways, including building-wall-to-support way, constant resistance and large deformation pre-stress anchor cable way, and reserved gob-side entry retaining way. Different mines could choose one from these three ways according to their local conditions.
出处
《山西煤炭》
2013年第9期47-48,51,共3页
Shanxi Coal
关键词
回收率
无煤柱
沿空留巷(掘巷)
分析
recovery rate
mining without coal pillars
gob-side entry retaining
analysis
