地震和降雨对乌鲁木齐大学路泥岩边坡影响
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摘要
利用有限元ABAQUS软件,模拟了人工开挖边坡,研究了降雨和地震对三叠系强风化泥岩边坡稳定性的影响。结果表明:降雨会使滑体的内摩擦角和黏聚力减小,从而使边坡安全系数急剧降低。地震对边坡的影响最大,由于边坡存在与地震波传播方向相垂直的竖向结构面,很容易发生拉裂破坏。通过设置抗滑桩支护边坡可以提高边坡的稳定性,并且在桩间距一定的条件下,随着桩径的增加,边坡安全系数稳步增长。
By using the finite element ABAQUS software,the effects of artificial excavation,rainfall and earthquake on the slope stability of the strong weathered mudstone are simulated. It turns out that rainfall takes the effort to reduce the internal friction angle and cohesion of the sliding body,which reduce the slope safety drastically. Earthquakes has the great impact on the slope,due to the slope has a vertical strcutural plane perpendicular to the propagation direction of the seismic wave,it is easy to crack down. By setting the anti-slide pile to support slope,the stability of slope can be improved,and with a certain distance between piles,slope safety factor increases along with the pile diameter.
By using the finite element ABAQUS software,the effects of artificial excavation,rainfall and earthquake on the slope stability of the strong weathered mudstone are simulated. It turns out that rainfall takes the effort to reduce the internal friction angle and cohesion of the sliding body,which reduce the slope safety drastically. Earthquakes has the great impact on the slope,due to the slope has a vertical strcutural plane perpendicular to the propagation direction of the seismic wave,it is easy to crack down. By setting the anti-slide pile to support slope,the stability of slope can be improved,and with a certain distance between piles,slope safety factor increases along with the pile diameter.
引文
[1]杨纪林,张勇,杨章,卡合尔曼.乌鲁木齐头屯河上游1999年8月滑坡成因分析[J].内陆地震,2001(01):77-79.
[2]赵祖禄.新疆岩土工程技术研究[M].乌鲁木齐:新疆科技卫生出版社,1996
[3]中华人民共和国国家标准编写组.(GB50330-2013)建筑边坡工程技术规范[S].北京:中国建筑工业出版社,2013.
[4]赵尚毅,郑颖人.用有限单元强度折减法求边坡稳定安全系数[J].岩上工程学报,2002.24(3):343-346.
[5]咸玉建,陈学军,汪志刚,等.基于有限元强度折减系数法岩土边坡稳定性分析与抗滑桩设计[J].地质科技情报,2015,(04):176-182.
[6]袁英石,李铭,何盛.有限元强度折减法在土质边坡中的应用[J].西部探矿工程,2009,(07):18-21.
[7]Sangseom Jeong,Byungchul Kim,Jinoh Won,Jinhyung Lee.Uncoupled analysis of stabilizing piles in weathered slopes[J].Computers and Geotechnics,2003,30(8).;671-682.
[8]Takuo Yamagami,Jing-Cai Jiang,Katsutoshi Ueno.A limit Equilibrium Stability Analysis of Slopes with Stabilizing Piles[J].Slope stability 2000:343-354.
[9]王伟锋,耿赟,王青振,等.降雨型与地震型滑坡试验研究[J].地震地质,2012,34(04):810-819.
[10]全国地震标准化技术委员会.GB 18306-2015中国地震动参数区划图[S].北京:中国标准出版社,2016.
(1)关于印发2008年乌鲁木齐市汛期地质灾害防治方案的通知.新疆维吾尔自治区乌鲁木齐市人民政府办公厅,乌政办[2008]42号.
(2)新疆地质矿产局第一水文地质工程地质大队.新疆维吾尔自治区乌鲁木齐城市地质综合勘察报告(比例尺1 ∶50 000).1988.
(1)乌鲁木齐市轨道交通一号线新疆大学站—二道桥站区间岩土工程勘察报告[Z].北京城建勘测设计研究院有限责任公司.2013.
[2]赵祖禄.新疆岩土工程技术研究[M].乌鲁木齐:新疆科技卫生出版社,1996
[3]中华人民共和国国家标准编写组.(GB50330-2013)建筑边坡工程技术规范[S].北京:中国建筑工业出版社,2013.
[4]赵尚毅,郑颖人.用有限单元强度折减法求边坡稳定安全系数[J].岩上工程学报,2002.24(3):343-346.
[5]咸玉建,陈学军,汪志刚,等.基于有限元强度折减系数法岩土边坡稳定性分析与抗滑桩设计[J].地质科技情报,2015,(04):176-182.
[6]袁英石,李铭,何盛.有限元强度折减法在土质边坡中的应用[J].西部探矿工程,2009,(07):18-21.
[7]Sangseom Jeong,Byungchul Kim,Jinoh Won,Jinhyung Lee.Uncoupled analysis of stabilizing piles in weathered slopes[J].Computers and Geotechnics,2003,30(8).;671-682.
[8]Takuo Yamagami,Jing-Cai Jiang,Katsutoshi Ueno.A limit Equilibrium Stability Analysis of Slopes with Stabilizing Piles[J].Slope stability 2000:343-354.
[9]王伟锋,耿赟,王青振,等.降雨型与地震型滑坡试验研究[J].地震地质,2012,34(04):810-819.
[10]全国地震标准化技术委员会.GB 18306-2015中国地震动参数区划图[S].北京:中国标准出版社,2016.
(1)关于印发2008年乌鲁木齐市汛期地质灾害防治方案的通知.新疆维吾尔自治区乌鲁木齐市人民政府办公厅,乌政办[2008]42号.
(2)新疆地质矿产局第一水文地质工程地质大队.新疆维吾尔自治区乌鲁木齐城市地质综合勘察报告(比例尺1 ∶50 000).1988.
(1)乌鲁木齐市轨道交通一号线新疆大学站—二道桥站区间岩土工程勘察报告[Z].北京城建勘测设计研究院有限责任公司.2013.