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水电岩质边坡的稳定性概率分级方法研究
李秀珍1,2; 孔纪名1,2; 李胜伟3
Corresponding Author李秀珍
2011
Source Publication岩石力学与工程学报
ISSN1000-6915
Volume30Issue:S2Pages:4025-4032
Other Abstract

引入荷兰学者R.Hack等[1-3]提出的边坡稳定性概率分级(SSPC)方法,针对该方法在水电边坡稳定性评价中存在的两个局限性:一是仅适合于45 m以下边坡的稳定性评价和对完整岩石抗压强度的估计主观性和随意性较强,提出采用Hoek-Brown经验强度准则和边坡最大坡高经验公式,对SSPC方法中边坡岩体的抗剪强度和最大坡高进行修正。典型水电边坡实例的研究结果表明,SSPC修正方法对34个水电边坡稳定性评价的准确率为61.8%,对10个非构造性控制破坏的水电边坡稳定性评价的准确率达80%。SSPC修正方法对于水电岩质边坡的稳定性概率分级具有较好的适用性,可以为水电岩质边坡的稳定性快速评价提供一条新的途径。 
 

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Firstly introduced a slope stability probability classification(SSPC) method, which was proposed by Dutch scholar R. Hack, et al[1-3]. The method has two main limitations in the evaluation of rock slope stability of hydropower engineering regions. One is that the method is valid only for the slopes with heights ranging up to 45 m, another is that the estimation of the intact rock strength with broad bands in SSPC has strong subjectivity and randomness. To the two limitations, the shear strength of the slope rock masses is modified by Hoek-Brown strength criterion, and the maximum height of the slopes is calculated by using an empirical formula. The analysis results of 34 typical rock slopes(10 non-structure controlling slopes and 24 structure controlling slopes) of hydropower engineering regions show that the assessment accuracy of the modified method is 61.8% for the all 34 slopes and 80% for the 10 non-structure controlling slopes. So, the modified SSPC method is good for slope stability probability classification and can provide a new way for quick and effective assessment of rock slope in hydropower engineering regions.

Keyword边坡工程:水电岩质边坡 边坡稳定性概率分级方法 Hoek-brown强度准则 修正
Indexed ByEI
Language中文
Funding Organization国家自然科学基金资助项目(40802072) ; 中国科学院“西部之光”人才培养计划项目(O8R2140140) ; 云南省科技教育专项基金项目(2010A08–b)
Accession numberAccession number:20114914584943
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/18302
Collection山地灾害与地表过程重点实验室
Affiliation1.中国科学院山地灾害与地表过程重点实验室
2.中国科学院成都山地灾害与环境研究所
3.四川省地矿局成都水文地质工程地质中心
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
李秀珍,孔纪名,李胜伟. 水电岩质边坡的稳定性概率分级方法研究[J]. 岩石力学与工程学报,2011,30(S2):4025-4032.
APA 李秀珍,孔纪名,&李胜伟.(2011).水电岩质边坡的稳定性概率分级方法研究.岩石力学与工程学报,30(S2),4025-4032.
MLA 李秀珍,et al."水电岩质边坡的稳定性概率分级方法研究".岩石力学与工程学报 30.S2(2011):4025-4032.
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