廣河高速公路運(yùn)營階段路塹滑坡應(yīng)急搶險(xiǎn)治理分析
發(fā)布時(shí)間:2018-02-27 03:29
本文關(guān)鍵詞: 路塹滑坡 監(jiān)測 成因分析 治理 設(shè)計(jì)變更 出處:《華南理工大學(xué)》2014年碩士論文 論文類型:學(xué)位論文
【摘要】:廣東省土地總面積的57%以上是山地和丘陵,省內(nèi)的高速公路路塹邊坡較多。邊坡的穩(wěn)定性直接影響高速公路施工和運(yùn)營的安全。由于地質(zhì)現(xiàn)象的隱蔽性,在邊坡開挖前很難準(zhǔn)確的預(yù)測開挖后坡體的地質(zhì)情況,受到勘察資料的限制,高速公路邊坡防護(hù)設(shè)計(jì)常常與地質(zhì)條件不符。地質(zhì)災(zāi)害,特別是工程活動(dòng)引起的地質(zhì)災(zāi)害,有一個(gè)逐步暴露的過程,公路開挖引起的邊坡失穩(wěn)就是一個(gè)逐步暴露的過程。 廣河高速公路K95、K97路塹滑坡位于廣州至河源高速公路惠州段,由修路開挖邊坡后多次垮塌發(fā)展而成。本文通過多次的現(xiàn)場勘察,詳細(xì)研究了邊坡病害發(fā)展及治理歷史。從地層巖性、地質(zhì)結(jié)構(gòu)、水文地質(zhì)、人工活動(dòng)等方面分析了滑坡的成因。通過現(xiàn)場踏勘和監(jiān)測數(shù)據(jù)的分析,確定了滑坡滑面位置和滑動(dòng)方向,并針對(duì)性提出了合理的治理方案。其中,K95滑坡進(jìn)行了兩次變更設(shè)計(jì),K97滑坡通過方案比選選定了最優(yōu)方案。K95、K97路塹滑坡的成功治理,,對(duì)廣東地區(qū)類似路塹滑坡的治理提供了有益的經(jīng)驗(yàn)。
[Abstract]:More than 57% of the total land area in Guangdong Province is mountainous and hilly, and there are more highway cutting slopes in the province. The stability of the slope directly affects the safety of highway construction and operation. It is difficult to accurately predict the geological condition of slope body after excavation before excavation. Limited by the survey data, the slope protection design of expressway is often not in accordance with geological conditions. Geological hazards, especially geological disasters caused by engineering activities, are very difficult to predict. There is a gradual exposure process, the slope instability caused by highway excavation is a gradual exposure process. The K95C97 cutting landslide of Guanghe Expressway is located in Huizhou section of Guangzhou-Heyuan Expressway. The development and treatment history of slope diseases are studied in detail. The causes of landslide are analyzed from the aspects of stratigraphic lithology, geological structure, hydrogeology and artificial activities. The position and direction of landslide slide surface are determined, and a reasonable treatment scheme is put forward. It provides beneficial experience for the treatment of similar cutting landslide in Guangdong area.
【學(xué)位授予單位】:華南理工大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類號(hào)】:U418.55
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