發(fā)布時(shí)間：2018-03-01 09:06

  本文關(guān)鍵詞： 滑坡 鋁土質(zhì)泥巖 古滑坡 極限平衡法　出處：《長安大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：某煤礦主廠房場地地處一近東西向分布的河谷南岸,位于該谷坡坡體中段。坡腳的開挖破壞了該場地坡體的平衡,在地表水、地下水、河谷谷坡整體穩(wěn)定性等多種因素的共同影響下,主廠房場地斜坡發(fā)生了滑動(dòng)。本文對該場地滑坡展開研究,以便掌握滑坡發(fā)生機(jī)理,對該滑坡進(jìn)行有效防治,避免或減少滑坡帶來的經(jīng)濟(jì)與財(cái)產(chǎn)損失。本文首先分析了主廠房場地所處斜坡的整體穩(wěn)定性;通過室內(nèi)試驗(yàn),對滑帶處鋁土質(zhì)泥巖的特殊性質(zhì)進(jìn)行研究,并用極限平衡法對該邊坡進(jìn)行了穩(wěn)定性分析。本文的研究成果如下:(1)對某煤礦主廠房所處的斜坡的穩(wěn)定性進(jìn)行了分析。通過對場地地層、地質(zhì)構(gòu)造、地表水、地下水等的論證,認(rèn)為主廠房所處斜坡為一古滑坡,且為多層滑坡。(2)主廠房場地位于古滑坡體,古滑坡目前不穩(wěn)定。主廠房場地地層破碎,巖層節(jié)理裂隙發(fā)育,河流切割坡腳,地下水較豐富,施工平場時(shí)開挖坡腳,加之雨季地表水大量入滲,使其下部的鋁士質(zhì)泥巖軟化形成滑面,從而導(dǎo)致邊坡失穩(wěn),發(fā)生滑動(dòng)。(3)主廠房滑坡滑帶為鋁土質(zhì)泥巖,巖體極為破碎,巖芯呈碎塊狀,取芯困難,通過野外采取試樣進(jìn)行室內(nèi)巖石試驗(yàn)的分析方法不易實(shí)現(xiàn);該鋁土質(zhì)泥巖臌脹性強(qiáng),又極為破碎,據(jù)其這一特點(diǎn)本文采用了將鋁土質(zhì)泥巖碎塊磨粉,然后按粘性土的方法進(jìn)行力學(xué)試驗(yàn)。邊坡穩(wěn)定性分析的計(jì)算結(jié)果表明,這種方法可行。
[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,鍦頒笅姘寸瓑鐨勮璇，

本文編號(hào)：1551271