【摘要】：傾斜煤層鐵道運輸露天礦在最終開采結(jié)束后,一般會形成面積數(shù)平方公里至十幾平方公里、四周為高陡邊坡的大型深坑,并由此引發(fā)一系列礦山地質(zhì)災(zāi)害、環(huán)境及社會問題。海州露天礦自2005年閉坑以來,形成了長4km、寬2km、深350m的廢棄礦坑,2007年開始建設(shè)礦山地質(zhì)公園。南幫邊坡的變形破壞、地面沉降、殘煤自燃等地質(zhì)災(zāi)害嚴重影響了礦山地質(zhì)公園的建設(shè)。論文以海州露天礦閉坑后南幫高陡邊坡為工程背景,綜合運用現(xiàn)場調(diào)研、理論分析、極限平衡、數(shù)值模擬等方法和手段,對影響邊坡穩(wěn)定性的因素進行探討,分析邊坡的潛在滑坡模式,對南幫邊坡穩(wěn)定性進行評價,確定南幫邊坡的滑坡機制,對削坡減載對南幫邊坡穩(wěn)定性的影響規(guī)律進行分析,提出南幫邊坡綜合治理措施。研究結(jié)果表明：海州露天礦南幫邊坡的滑坡模式為圓弧滑動；南幫W5、W3、E2-E5剖面不符合安全儲備要求,得出W5、W3剖面需削減到37°,E2-E5剖面需削減至36°；提出了以削坡減載為主的南幫危險區(qū)段綜合治理措施。
[Abstract]:After the final mining of the inclined coal seam railway transportation opencast mine, it will form a large deep pit with an area of several to ten square kilometers and a high and steep slope around it, which will lead to a series of geological disasters, environmental and social problems. Since the pit closed in 2005, Haizhou opencast mine has formed an abandoned mine pit with a length of 4km, a width of 2km and a depth of 350m. In 2007, the mine geopark was constructed. The construction of mine geopark is seriously affected by geological disasters such as deformation and destruction of southern slope, land subsidence and spontaneous combustion of residual coal. Based on the engineering background of high and steep slope of south slope after closing pit in Haizhou opencast mine, the factors influencing the stability of slope are discussed by using the methods and means of field investigation, theoretical analysis, limit equilibrium, numerical simulation and so on. The potential landslide model of the slope is analyzed, the stability of the south slope is evaluated, the landslide mechanism of the south slope is determined, the influence law of load reduction on the slope stability is analyzed, and the comprehensive treatment measures are put forward. The results show that the landslide model of the south slope of Haizhou opencast mine is circular slip, the south slope W5W3P2-E5 does not meet the requirement of safety reserve, and the W5W3 profile needs to be reduced to 37 擄E2-E5 profile to 36 擄. The comprehensive control measures for the dangerous section of the south side are put forward, which are mainly slope cutting and load reduction.
【學位授予單位】：遼寧工程技術(shù)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD824.7

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