某煤矿主厂房滑坡机理研究
发布时间：2018-03-01 09:06
本文关键词： 滑坡 铝土质泥岩 古滑坡 极限平衡法 出处：《长安大学》2015年硕士论文 论文类型：学位论文
【摘要】：某煤矿主厂房场地地处一近东西向分布的河谷南岸,位于该谷坡坡体中段。坡脚的开挖破坏了该场地坡体的平衡,在地表水、地下水、河谷谷坡整体稳定性等多种因素的共同影响下,主厂房场地斜坡发生了滑动。本文对该场地滑坡展开研究,以便掌握滑坡发生机理,对该滑坡进行有效防治,避免或减少滑坡带来的经济与财产损失。本文首先分析了主厂房场地所处斜坡的整体稳定性;通过室内试验,对滑带处铝土质泥岩的特殊性质进行研究,并用极限平衡法对该边坡进行了稳定性分析。本文的研究成果如下:(1)对某煤矿主厂房所处的斜坡的稳定性进行了分析。通过对场地地层、地质构造、地表水、地下水等的论证,认为主厂房所处斜坡为一古滑坡,且为多层滑坡。(2)主厂房场地位于古滑坡体,古滑坡目前不稳定。主厂房场地地层破碎,岩层节理裂隙发育,河流切割坡脚,地下水较丰富,施工平场时开挖坡脚,加之雨季地表水大量入渗,使其下部的铝士质泥岩软化形成滑面,从而导致边坡失稳,发生滑动。(3)主厂房滑坡滑带为铝土质泥岩,岩体极为破碎,岩芯呈碎块状,取芯困难,通过野外采取试样进行室内岩石试验的分析方法不易实现;该铝土质泥岩臌胀性强,又极为破碎,据其这一特点本文采用了将铝土质泥岩碎块磨粉,然后按粘性土的方法进行力学试验。边坡稳定性分析的计算结果表明,这种方法可行。
[Abstract]:A coal mine main plant site is located in a nearly East-West distribution of the South Valley, is located in the middle of the valley slope. The slope of the ground slope excavation destroys the balance, in surface water, groundwater, many factors such as valley slope stability, sliding occurred in the main building on the site slopes. The site of landslide research, in order to grasp the landslide mechanism, effective prevention and treatment of the landslide, to avoid or reduce the economic loss of property and landslide. This paper first analyzes the overall stability of the main plant site is located in a slope; through the indoor experiment, to study the slip zone bauxitic mudstone with special properties, and limit balance method for the slope stability analysis is carried out. The research results of this paper are as follows: (1) the stability of the main building of a coal mine slope is analyzed. Based on the site stratigraphy, geological structure, ground 琛ㄦ按,鍦颁笅姘寸瓑鐨勮璇，
本文编号：1551271
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