S316省道K63+280～+540二次滑坡成因分析及综合治理措施
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摘要
以S316省道K63+280~+540段二次滑坡治理为工程背景,分析了该滑坡成因和类型,提出了采用轻型支挡+预应力锚索+微型桩的联合支护结构,并结合多种疏排水措施综合治理方案;采用深层测斜监测手段验证二次滑坡治理方案的适宜性。治理措施竣工后,位于防撞墙外侧的CX3,CX4,CX5水平位移增量明显减少,验证了治理方案的合理性。
Grounding on the landslide control project along K63 + 280 ~ + 540 Section of Provincial Road S316,this paper analyzed the causes and type of the landslide and then,in relation to which a support structure combining light retaining structure,prestressed anchor cable and micropile was suggested with multiple control schemes of drainage measures; in addition,in-depth bore-hole surveying and monitoring means were used to verify the suitability of the control measures. As a result,the increment of horizontal displacement at CX3,CX4 & CX5 outside the bump wall presented a remarkable decrease after comptetion,thus verifying the control measures' reasonability.
Grounding on the landslide control project along K63 + 280 ~ + 540 Section of Provincial Road S316,this paper analyzed the causes and type of the landslide and then,in relation to which a support structure combining light retaining structure,prestressed anchor cable and micropile was suggested with multiple control schemes of drainage measures; in addition,in-depth bore-hole surveying and monitoring means were used to verify the suitability of the control measures. As a result,the increment of horizontal displacement at CX3,CX4 & CX5 outside the bump wall presented a remarkable decrease after comptetion,thus verifying the control measures' reasonability.
引文
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[2]张立洁,聂文波,杨良策.滑坡计算中地下水作用的探讨[J].土工基础,2003(6):24-25.
[3]郑颖人,陈祖煜,王恭先,等.边坡与滑坡工程治理[M].第2版.北京:人民交通出版社,2010.
[4]JTG D30—2004公路路基设计规范[S].北京:人民交通出版社,2004.
[5]刘娟.微型桩群在顺层岩质边坡填方路基处理中的应用[J].西南公路,2013(2):173-176.
[6]王桢,杨秀梅.一种快速安全环保的非开挖式抗滑桩施工方法:中国,201110024826[P].2001-08-03.
[7]文育高,李家财.滑坡治理方法及应用[J].西部探矿工程,2010(5):19-21.
[8]庞牧华.辐射井用于膨胀土河渠滑坡治理的相关研究[D].合肥:合肥工业大学,2012.
[9]叶锋,刘永亮.辐射井降水技术及工程应用[J].施工技术,2005(5):51-56.