海南保亭县甘什岭滑坡成因分析及稳定性评价
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摘要
简要介绍了保亭县甘什岭滑坡的形态、地层岩性、水文地质环境条件及地质构造等情况,分析了该滑坡的形成原因,并对其进行稳定性评价和危险性分析,稳定计算方法选用剩余推力传递法对滑坡稳定性加以试算,其计算结果与滑坡实际情况基本吻合。通过以上分析,可得以下结论:当滑坡在天然状态下时,稳定系数K的范围在1.17~1.26之间,此时滑坡处于稳定状态;当滑坡在饱水状态下时,稳定系数K的范围在0.99~1.03之间,此时滑坡处于滑移状态。
The paper briefly introduces the shape features,geological lithology,environmental conditions and geological structure of GanShenLing landslide in BaoTing county.Analyzed the formation cause of the landslide,and make a stability evaluation and risk analysis of it,It is used residual thrust method in the stability calculation to calculate for the stability of landslide,the calculation results and the landslide roughly tallying with the actual situation.Through the above analysis can draw the following conculsions:Under the natural state,the landslide is in steady state while the stability factor range between 1.17 and 1.26;Under the heavy rain state,the landslide is in sliding state while the stability factor range between 0.99 and 1.03.
The paper briefly introduces the shape features,geological lithology,environmental conditions and geological structure of GanShenLing landslide in BaoTing county.Analyzed the formation cause of the landslide,and make a stability evaluation and risk analysis of it,It is used residual thrust method in the stability calculation to calculate for the stability of landslide,the calculation results and the landslide roughly tallying with the actual situation.Through the above analysis can draw the following conculsions:Under the natural state,the landslide is in steady state while the stability factor range between 1.17 and 1.26;Under the heavy rain state,the landslide is in sliding state while the stability factor range between 0.99 and 1.03.
引文
[1]李莉.边坡稳定性分析方法与工程应用[D].北京:北京科技大学,2005.
[2]中华人民共和国建设部.岩土工程勘察规范(GB50021-2001)[S].2009.
[3]潘懋,李铁锋.灾害地质学[M].北京:北京大学出版社,2002.
[4]杨秀元,田运涛,王爱军.西塘湾滑坡成因分析及稳定性评价[J].山西建筑,2010,36(25):84-86.
[5]李昂,侯圣山,周平根.四川雅安市雨城区降雨诱发滑坡研究[J].中国地质灾害与防治学报,2007,18(1):15-17.
[6]马显春,王雷,赵法锁.滑坡稳定影响因子敏感性分析及治理方案探讨[J].地质力学学报,2008,12(4):381-387.
[7]Fell R,Ho K K S,lacasse S,et al.A framework for landslide risk assessment and management[C]//Fell,Couture,Eberhardt.Landsliderisk management.Hungr,Taylor&Francis Group,London,2005,ISBN 04 1538 043.
[2]中华人民共和国建设部.岩土工程勘察规范(GB50021-2001)[S].2009.
[3]潘懋,李铁锋.灾害地质学[M].北京:北京大学出版社,2002.
[4]杨秀元,田运涛,王爱军.西塘湾滑坡成因分析及稳定性评价[J].山西建筑,2010,36(25):84-86.
[5]李昂,侯圣山,周平根.四川雅安市雨城区降雨诱发滑坡研究[J].中国地质灾害与防治学报,2007,18(1):15-17.
[6]马显春,王雷,赵法锁.滑坡稳定影响因子敏感性分析及治理方案探讨[J].地质力学学报,2008,12(4):381-387.
[7]Fell R,Ho K K S,lacasse S,et al.A framework for landslide risk assessment and management[C]//Fell,Couture,Eberhardt.Landsliderisk management.Hungr,Taylor&Francis Group,London,2005,ISBN 04 1538 043.