本文選題：庫水位 + 降雨　； 參考：《人民黃河》2017年07期

【摘要】：三峽庫區(qū)因降雨充沛、地質(zhì)環(huán)境脆弱而地質(zhì)災(zāi)害頻發(fā),庫水及降雨作用是導(dǎo)致庫區(qū)滑坡變形破壞的重要影響因素。藕塘滑坡為一滑體深厚、多序次解體、規(guī)模巨大的靠椅狀順層巖質(zhì)涉水滑坡,通過建立藕塘滑坡多滑帶地質(zhì)模型,來研究庫水聯(lián)合降雨作用下滑坡的變形和穩(wěn)定性。結(jié)果表明,藕塘滑坡為動水壓力型滑坡,淺層滑體對降雨強度和庫水位波動敏感性較高,其穩(wěn)定性主要受庫水位波動影響;深層滑體穩(wěn)定性在降雨強度低于160 mm/d時受庫水位波動和降雨強度綜合作用影響,反之主要受降雨強度影響;雖然前緣反翹段和前期治理工程具有一定阻滑作用,但藕塘滑坡整體處于潛在欠穩(wěn)定狀態(tài),在大暴雨及庫水位驟降作用下可能發(fā)生失穩(wěn)破壞。
[Abstract]:The three Gorges reservoir area is prone to frequent geological disasters due to abundant rainfall and fragile geological environment. Reservoir water and rainfall are important influencing factors for landslide deformation and destruction in the reservoir area. The Yutang landslide is a kind of rock-wading landslide with a deep sliding body, multi-sequence disintegration and a large scale rock-like bedding. The deformation and stability of the landslide under the combined rainfall of reservoir and water are studied by establishing the geological model of the multi-slip zone of the Yutang landslide. The results show that the Yutang landslide is a hydrodynamic pressure landslide, and the shallow sliding body is highly sensitive to rainfall intensity and reservoir water level fluctuation, and its stability is mainly affected by reservoir water level fluctuation. The stability of deep sliding body is affected by water level fluctuation and rainfall intensity when rainfall intensity is less than 160 mm/d, whereas it is mainly affected by rainfall intensity. However, the whole Yutang landslide is in a potentially unstable state, which may be unstable under the action of heavy rain and sudden drop of reservoir water level.
【作者單位】： 江西省交通咨詢公司;江西省交通科學(xué)研究院;
【基金】：江西省交通運輸廳科研項目(KT2015013)
【分類號】：TV223;TV697.3
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本文編號：1903350