【摘要】：基于龍口北皂煤礦工程背景,提出了煤與油頁巖上行卸荷聯(lián)合開采方法。指出了煤與油頁巖聯(lián)合開采需要解決的關(guān)鍵問題:油頁巖破壞機理與峰后強度特性、油頁巖工作面布置與回采巷道圍巖控制、煤與油頁巖聯(lián)合開采的非連續(xù)破斷數(shù)值分析等。研究認(rèn)為油頁巖在下部煤層開采后處于峰后破壞階段,之后被重新壓實,強度有所回升,油頁巖開采應(yīng)處于中間某一合理強度區(qū)間。研究表明北皂礦煤2與油頁巖聯(lián)合開采的合理層間距范圍為[13.2 m,32.9 m],且油頁巖開采工作面應(yīng)滯后煤層開采工作面大于125 m。煤與油頁巖聯(lián)合開采在龍口北皂礦成功進(jìn)行了工程實踐,取得了良好的經(jīng)濟(jì)效益,實現(xiàn)了煤礦的可持續(xù)發(fā)展。
[Abstract]:Based on the engineering background of Beizao Coal Mine in Longkou, the combined mining method of uplink unloading of coal and oil shale is put forward. The key problems needed to be solved in combined mining of coal and oil shale are pointed out, such as the failure mechanism and post-peak strength characteristics of oil shale, the arrangement of oil shale face and the control of roadway surrounding rock, and the numerical analysis of discontinuous fracture in combined mining of coal and oil shale. It is considered that the oil shale is in the stage of post-peak failure after mining in the lower coal seam, then it is compacted again, and the strength of oil shale is increased to some extent, and the oil shale exploitation should be in a reasonable strength range in the middle. The results show that the reasonable interval between coal 2 and oil shale is [13.2 m ~ (32.9 m)], and the mining face of oil shale should lag behind coal seam mining face more than 125 m. The combined exploitation of coal and oil shale has been carried out successfully in Beizao Mine of Longkou, and good economic benefits have been obtained, and the sustainable development of coal mine has been realized.
【作者單位】： 中國礦業(yè)大學(xué)(北京)力學(xué)與建筑工程學(xué)院;中國礦業(yè)大學(xué)(北京)煤炭資源與安全開采國家重點實驗室;山東能源龍口礦業(yè)集團(tuán)有限公司;
【基金】：國家自然科學(xué)基金資助項目(51622404,51374215,11572343)
【分類號】：TD83;TD82

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