[1]王裕宜,詹钱登,洪勇,等.泥石流源地土体应力应变特性对降雨响应过程的分析——以蒋家沟泥石流为例[J].山地学报,2009,(04):457.
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泥石流源地土体应力应变特性对降雨响应过程的分析——以蒋家沟泥石流为例()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2009年04期
页码:
457
栏目:
山地学报
出版日期:
2009-07-15

文章信息/Info

作者:
王裕宜;詹钱登;洪勇;田冰;邹仁元;
中国科学院山地灾害与地表过程重点实验室中国科学院东川泥石流观测研究站;中国科学院水利部成都山地灾害与环境研究所;台湾成功大学水利及海洋工程系;河北师范大学资源与环境科学学院;
关键词:
崩塌; 滑坡; 含水量; 极限应力; 泥石流
文献标志码:
A
摘要:
根据对蒋家沟泥石流源地的崩塌、滑坡、散流坡,在旱季与雨季不同时段,降雨入渗后的土壤含水状况观测,以及泉水季节性变化,详细分析了泥石流源地崩塌、滑坡、散流坡土体的应力应变特性对降雨的响应过程差异。在雨季滑坡临空面和滑坡体内的土体含水量分别为6.67%、4.8%,滑坡活动主要是通过前缘剪出口崩塌方式补给下方沟床。崩塌体由于土体结构极为松散,在雨季该土体含水量通常高达8.85%～16%,使其土体的抗剪强度(C、φ)处于极限应力状态,一旦遇到降雨浸润和冲刷,迅速触变液化,转化为高浓度泥石流的侵蚀产沙过程。

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更新日期/Last Update: 2009-07-15