厚煤层坚硬顶板大采高工作面沿空留巷技术研究与应用OA
Research and application of gob-side entry retaining technology in hard roof and large mining height face of thick coal seam
义棠煤矿北翼六采区采用大采高一次采全高工艺,工作面采高为5m,工作面顶板为石灰岩坚硬顶板.在工作面回风巷进行试验沿空留巷技术,巷道高达4 m,断面大且巷道顶板留有1.2m厚的9号煤.该类条件下进行沿空留巷在国内尚无可以借鉴的实例.通过理论设计、相似模拟研究得出合理的留巷支护方式、挡矸方案.经现场矿压观测结果可得留巷效果良好,技术经济合理.此留巷方案可为类似条件的矿井推广应用.
Full height mining technology with large mining height was adopted in the sixth mining area in the north wing of Yitang mine.The mining height of the working face was 5 m,and the roof of the working face was limestone hard roof.The gob-side entry retaining technology was tested in the return airway of the working face.The roadway was up to 4 m high,the section is large and the roof of the roadway was left with 1.2 m thick No.9 coal.There was no example that …查看全部>>
温耀军
山西凯嘉能源集团有限公司,山西晋中 032000
矿山工程
厚煤层坚硬顶板大采高工作面沿空留巷
thick coal seamhard rooflarge mining height working facegob-side entry retaining
《煤炭与化工》 2023 (11)
33-36,43,5
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