慈林山煤矿15#煤层顶板岩石特性钻孔窥视及测试研究

Borehole Peep and Test Study on Rock Characteristics of No.15 Coal Seam Roof in Cilinshan Coal Mine

山西潞安矿业集团慈林山煤矿存在上行开采的布置方式,但地质资料不够详细,上行开采存在较大风险。为准确掌握15#煤层顶板各岩层的物理力学特性,在15203工作面运输巷进行钻孔取芯,对芯样进行加工,测试其物理力学性能,同时进行孔内窥视,全面掌握各岩层岩性、厚度、结构状况,为上行开采的可行性研究提供了详细可靠的数据。

There is a layout of upward mining in Cilinshan Coal Mine of Shanxi Lu'an Mine Group,but the geological data is not detailed enough,and there is a great risk of upward mining.In order to accurately grasp the physical and mechanical properties of each rock stratum in the roof of No.15 coal seam,drilling and coring were carried out in the transportation roadway of 15203 working face,and the core samples were processed to test their physical and mechanical properties.At the same time,peeping in the hole was carried out to fully grasp the lithology,thickness and structure of each rock stratum,which provided detailed and reliable data for the feasibility study of ascending mining.