输水隧洞进水口边坡局部稳定性分析与加固方案优化
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摘要
边坡稳定性分析是选择支护方案和支护参数的重要基础。文章以胜利水电站输水隧洞进水口边坡为例,分析提出需要支护加固的不稳定块体,然后在考虑连通率和充填率的基础上进行块体局部稳定分析计算参数优化,并依据计算结果提出相应的加固方案,最后根据安全系数计算结果对原始方案进行了必要的优化设计。优化后的加固方案不仅安全可靠,而且具有较好的经济性,建议在实际施工中采用。
The slope stability analysis is an important basis for selecting support schemes and supporting parameters.Taking the intake slope of water diversion tunnel of Shengli hydropower station as an example, the paper analyzes and finds out the unstable blocks which need support reinforcement, optimizes the local stability calculation parameter of the block considering the connectivity rate and the filling rate, provides the corresponding reinforcement scheme according to the calculation result, at last, the primary scheme are optimized and designed necessarily based on the calculation result of safety factor. The optimized reinforcement scheme is not only safe and reliable,but also has good economy. It is suggested to be used in actual construction.
The slope stability analysis is an important basis for selecting support schemes and supporting parameters.Taking the intake slope of water diversion tunnel of Shengli hydropower station as an example, the paper analyzes and finds out the unstable blocks which need support reinforcement, optimizes the local stability calculation parameter of the block considering the connectivity rate and the filling rate, provides the corresponding reinforcement scheme according to the calculation result, at last, the primary scheme are optimized and designed necessarily based on the calculation result of safety factor. The optimized reinforcement scheme is not only safe and reliable,but also has good economy. It is suggested to be used in actual construction.
引文
[1]苏兴大.苏子河胜利水电站坝址比选[J].陕西水利,2017(02):54-55+61.
[2]安娜.胜利水电站进水塔抗震稳定性校核评价[J].水利利技术监督,2017,25(01):52-54+133.
[3]王旭,刘东升,宋强辉,覃小华.基于极限平衡法的边坡稳定性可靠度分析[J].地下空间与工程学报,2016,12(03):839-844.
[4]王智德,夏元友,夏国邦,李敬东,陈东.顺层岩质边坡结构面抗剪强度特性试验研究[J].岩土力学,2015,36(S2):193-200.
[5]杜景灿,汪小刚,陈祖煜.结构面倾角对节理岩体的连通特性和综合抗剪强度的影响[J].水利学报,2002(05):41-46.
[6]陈秀芸.Unwedge程序在水利工程块体稳定性分析中的应用[J].山西建筑,2016,42(34):206-207.
[7]中华人民共和国国家发展和改革委员会.DL/T5353-2006水电水利工程边坡设计规范[M].北京:中国水利水电出版社,2013.
[8]陈庆发,赵有明,陈德炎,唐中琴,于振宇.采场内结构体解算及其稳定性计算[J].岩土力学,2013,34(07):2051-2058.
[2]安娜.胜利水电站进水塔抗震稳定性校核评价[J].水利利技术监督,2017,25(01):52-54+133.
[3]王旭,刘东升,宋强辉,覃小华.基于极限平衡法的边坡稳定性可靠度分析[J].地下空间与工程学报,2016,12(03):839-844.
[4]王智德,夏元友,夏国邦,李敬东,陈东.顺层岩质边坡结构面抗剪强度特性试验研究[J].岩土力学,2015,36(S2):193-200.
[5]杜景灿,汪小刚,陈祖煜.结构面倾角对节理岩体的连通特性和综合抗剪强度的影响[J].水利学报,2002(05):41-46.
[6]陈秀芸.Unwedge程序在水利工程块体稳定性分析中的应用[J].山西建筑,2016,42(34):206-207.
[7]中华人民共和国国家发展和改革委员会.DL/T5353-2006水电水利工程边坡设计规范[M].北京:中国水利水电出版社,2013.
[8]陈庆发,赵有明,陈德炎,唐中琴,于振宇.采场内结构体解算及其稳定性计算[J].岩土力学,2013,34(07):2051-2058.