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    2. 潛在不穩定邊坡復合式主動加固方法研究
      • 作者: 李培鋒,李斯濤,李春,等
      論文摘要

      潛在不穩定邊坡復合式主動加固方法研究*

      李培鋒1,2,李斯濤1,2,李春1,2,袁從華3,廖明進4 

      (1.云南玉臨高速公路建設有限責任公司,云南 臨滄 677000; 2.云南交投集團投資有限公司,云南 昆明 650228; 3.中國科學院武漢巖土力學研究所巖土力學與工程國家重點實驗室,湖北 武漢 430071;4.武漢科技大學,湖北 武漢 430065)

      [摘要]公路工程建設中軟巖和松散體類潛在不穩定邊坡的滑坡問題頻發,常規工程處治措施治理難度較大。結合某工程案例,通過室內試驗研究了工程擾動和降雨條件下巖體抗剪強度的演化規律,結果表明工程擾動和降雨可使巖體強度下降超過20%,為充分利用開挖前巖體的初始強度,擬采用抗滑樁聯合錨索框架的復合式主動加固方法進行邊坡治理。對比分析主動與被動加固的差異,結果表明,基于主動加固思想的加固工程措施提高了邊坡穩定性,避免了邊坡巖土體受工程擾動后強度下降等不利后果,相比被動加固方法而言,可降低工程治理難度,減少工程量,降低工程造價。

      [關鍵詞]邊坡穩定性;滑坡;加固;工程擾動;抗滑樁;錨索

      [中圖分類號]TU457     [文獻標識碼]A     [文章編號]1002-8498(2021)04-0095-04

      Research on Composite Active Reinforcement Method for Potentially Unstable Slope

      LI Peifeng1,2, LI Sitao1,2, LI Chun1,2, YUAN Conghua3, LIAO Mingjin4 

      (1.Yunnan Yulin Expressway Construction Co., Ltd., Lincang, Yunnan 677000, China; 2. Yunnan Communications Investment & Construction Group Co., Ltd., Kunming, Yunnan 650228, China; 3. State Key Laboratory of Geo mechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China; 4. Wuhan University of Science and Technology, Wuhan, Hubei 430065, China)

      Abstract: In the construction of highway engineering, the landslide problems of soft rock and loose mass slope occur frequently, and it is difficult to control with conventional engineering treatment measures. Combined with an engineering case, the evolution law of shear strength of rock mass under engineering disturbance and rainfall conditions is studied through indoor test. The results show that the strength of rock mass can be reduced by more than 20% under engineering disturbance and rainfall. In order to make full use of the initial strength of rock mass before excavation, a scheme of slope treatment with active reinforcement is proposed. After comparing and analyzing the difference between active and passive reinforcement, the results show that the reinforcement engineering measures based on the active reinforcement idea can improve the slope stability, avoid the adverse consequences of slope rock and soil mass strength decline after engineering disturbance, compared with the passive reinforcement method, it can reduce the difficulty of engineering treatment, reduce the engineering quantity and reduce the project cost.  

      Keywords:slope stability; landslide; reinforcement; engineering disturbance; anti slide pile; anchor cable

      *云南省交通運輸廳科技項目(云交科教〔201845號)

      [作者簡介]李培鋒,高級工程師,Email425585008@qq.com

      [通信作者]廖明進,博士,副教授,Email215395090@qq.com

       

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