發(fā)布時間：2018-01-05 07:41

  本文關鍵詞：湖北興山縣寒溪口橋滑坡穩(wěn)定性評價及防治對策　出處：《中國地質(zhì)大學(北京)》2017年碩士論文　論文類型：學位論文

  更多相關文章： 穩(wěn)定性 摩根斯坦-普萊斯法 利用Geo-studio軟件 滑坡治理

【摘要】：管道工程是一種規(guī)模龐大的綜合性的工程,應用了多種現(xiàn)代科學技術,在世界各國被視為大型的、綜合的工業(yè)建設項目。若要使長達數(shù)千米的管道系統(tǒng),在工況多變的情況下,長期、高效和安全地連續(xù)運行,管道工程的質(zhì)量須嚴格符合設計和規(guī)范的要求,施工前工作區(qū)的地質(zhì)環(huán)境必須處于穩(wěn)定狀態(tài),若是施工區(qū)域處于不穩(wěn)定地帶,必須對其進行穩(wěn)定性評估計算,采取一定的措施保證其穩(wěn)定性。興山縣寒溪口滑坡位于忠武輸氣管道工程區(qū)附近,對管道工程建設構成一定威脅。本文根據(jù)滑坡實地調(diào)查、地質(zhì)鉆探以及試驗資料,對寒溪口滑坡的發(fā)育特征和穩(wěn)定性進行了分析,并對滑坡治理措施進行了探討,得到以下結論:(1)根據(jù)寒溪口橋滑坡詳細調(diào)查資料分析,闡述了滑坡空間分布形態(tài)、物質(zhì)組成,變形特征,分析滑坡的成因機制是滑坡體土體松散破碎,遇水極易軟化,強度降低,沿軟弱面易發(fā)生整體失穩(wěn)滑移,屬推動式土質(zhì)滑坡。(2)采用摩根斯坦-普萊斯法,利用Geo-studio軟件對寒溪口橋滑坡在天然工況和暴雨工況下的穩(wěn)定性進行計算與分析,通過計算可知,天然工況下,寒溪口滑坡處于穩(wěn)定狀態(tài);暴雨工況下,寒溪口滑坡下段處于不穩(wěn)定~欠穩(wěn)定狀態(tài),其評價結果與滑體穩(wěn)定性野外宏觀判斷結果吻合。(3)通過對寒溪口橋滑坡穩(wěn)定性、穩(wěn)定性影響因素以滑坡治理方案的研究,經(jīng)過綜合分析后,提出采用“削坡減載+排水溝+擋土墻”方案進行治理,并對各分項工程進行設計。
[Abstract]:Pipeline engineering is a kind of large-scale comprehensive engineering, which applies a variety of modern science and technology, and is regarded as a large, comprehensive industrial construction project in the world. Under the condition of changeable working conditions, long term, efficient and safe continuous operation, the quality of pipeline engineering must strictly meet the requirements of design and specifications, and the geological environment of the working area must be in a stable state before construction. If the construction area is in an unstable zone, it must be evaluated and calculated, and certain measures should be taken to ensure its stability. The Hanxikou landslide in Xingshan County is located near the Zhongwu Gas Pipeline Project area. This paper analyzes the development characteristics and stability of the Hanxikou landslide according to the landslide field investigation, geological drilling and test data. Based on the detailed investigation data of Hanxikou Bridge landslide, the spatial distribution form, material composition and deformation characteristics of landslide are expounded. The cause of formation of landslide is that the landslide soil is loosely broken, easy to soften by water, and its strength is reduced. It is easy to slip along the weak surface, which belongs to the propulsive soil landslide, and adopts the method of Morgenstein-Price method. The stability of Hanxikou Bridge landslide under natural and rainstorm conditions is calculated and analyzed by using Geo-studio software. The results show that the stability of Hanxikou landslide is in a stable state under natural conditions. Under the condition of heavy rain, the lower segment of the Hanxikou landslide is in an unstable to unstable state, and the evaluation results are in agreement with the field macroscopic judgment results of the stability of the slide body. The influence factor of stability is the study of landslide treatment scheme. After comprehensive analysis, the scheme of "cutting slope and load reducing drainage ditch retaining wall" is put forward, and each sub-project is designed.
【學位授予單位】：中國地質(zhì)大學(北京)
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TE973;P642.22
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本文編號：1382212