海州露天矿南帮边坡稳定性与治理方法研究
发布时间：2018-09-10 20:18
【摘要】：倾斜煤层铁道运输露天矿在最终开采结束后,一般会形成面积数平方公里至十几平方公里、四周为高陡边坡的大型深坑,并由此引发一系列矿山地质灾害、环境及社会问题。海州露天矿自2005年闭坑以来,形成了长4km、宽2km、深350m的废弃矿坑,2007年开始建设矿山地质公园。南帮边坡的变形破坏、地面沉降、残煤自燃等地质灾害严重影响了矿山地质公园的建设。论文以海州露天矿闭坑后南帮高陡边坡为工程背景,综合运用现场调研、理论分析、极限平衡、数值模拟等方法和手段,对影响边坡稳定性的因素进行探讨,分析边坡的潜在滑坡模式,对南帮边坡稳定性进行评价,确定南帮边坡的滑坡机制,对削坡减载对南帮边坡稳定性的影响规律进行分析,提出南帮边坡综合治理措施。研究结果表明：海州露天矿南帮边坡的滑坡模式为圆弧滑动；南帮W5、W3、E2-E5剖面不符合安全储备要求,得出W5、W3剖面需削减到37°,E2-E5剖面需削减至36°；提出了以削坡减载为主的南帮危险区段综合治理措施。
[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 掳E2-E5 profile to 36 掳. The comprehensive control measures for the dangerous section of the south side are put forward, which are mainly slope cutting and load reduction.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD824.7
本文编号：2235506
[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 掳E2-E5 profile to 36 掳. The comprehensive control measures for the dangerous section of the south side are put forward, which are mainly slope cutting and load reduction.
【学位授予单位】：辽宁工程技术大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD824.7
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