基于基覆界面形态特征的某堆积体治理研究  

Comparative Analysis of the Reinforcement Measures on the Slope of a Certain Deposit Body Based on the Morphological Characteristics of the Bedrock Cover Interface

作　　者：胡鹏[1] 王乐华[1] 马莉[2] 罗骞[2] 

机构地区：[1]三峡大学三峡库区地质灾害教育部重点实验室,湖北宜昌443002 [2]三峡大学水利与环境学院,湖北宜昌443002

出　　处：《人民黄河》2013年第8期71-73,共3页Yellow River

基　　金：国家自然科学基金资助项目(90610029);湖北省自然科学基金资助项目(2008CD366);"十二五"国家科技支撑计划项目(200BBAB29B03-4)

摘　　要：采用基于刚体极限平衡原理的简化毕肖普法,对某堆积体的典型剖面进行了稳定性分析,结果表明,该堆积体在天然工况、暴雨工况、地震工况下均存在不稳定情况,需要对其进行治理。根据覆盖层厚度和基覆界面的形态特征,确定削坡减载和坡面上部支挡+下部削坡减载两种处理方案。经计算,这两种方案均能满足堆积体的稳定要求,说明处理方案是可行的。经对比:第一种方案施工简单,但工程量较大,且涉及到移民安置问题和生态破坏问题;第二种方案虽然施工相对较复杂,但工程量较小,能够取得良好的经济效益,综合考虑经济效益、社会效益等,最终选用第二种方案。Adopting the method of the simplified Bishop based on rigid limit equilibrium theory, this paper analyzed the stability of a selected typical- ly section of the deposit body. The result indicates that the deposit exists instability under conditions of the natural, rainstorm and seismic, which needs to be reinforced. Based on the depth of the cover layer and the morphological characteristics of the bedrock cover interface, this paper designed two kinds of reinforcement measures ： one is cutting slope and reducing load, and the other is supporting the upper of the slope and cutting the lower cff the slope. Through calculation, those two schemes can meet the stability requirem^qts of the deposit body which indicates the feasibility of the two schemes. By comparison, the first scheme has the advantage of simple construction, but has large engineering quantity and involving in the problem of resettlement and ecological destruction; the second scheme has relatively complex construction and small engineering quantity which cart obtain good economic benefits. Combining the considerations of economic benefit, social benefit and so on, the second scheme is selected eventually.

关 键 词：基覆界面 削坡减载 挡土墙 控制工况 稳定性 

分 类 号：TV223.2[水利工程—水工结构工程]