序贯抛填法封堵特大型深水漏洞方案及优化研究

doi:10.13722/j.cnki.jrme.2016.0796

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摘要构皮滩等多个水电站均发生过大型深水漏洞事故，因此研究水下大型漏洞的快速封堵，对事故抢险具有重要的工程应用价值。针对特大型深水漏洞的特点，提出“钢筋石笼+石渣+复合土工膜+模袋混凝土+黏土编织袋”依次投放的序贯抛填法和评价抛填封堵效果的解析计算方法，最后利用该方法及有限元数值计算方法对序贯抛填封堵工程进行了计算分析。计算结果表明：序贯抛填法进行封堵后渗流量满足封堵要求，可以很好地用于封堵特大型深水漏洞；黏土编织袋在封堵过程中发挥了关键的防渗作用，应更加关注其抛填质量，保证封堵效果；注意避免发生黏土编织袋局部空缺，尤其注意防范坡底处的黏土编织袋空缺；提出了黏土编织袋最优厚度的确定方法。

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关键词 ：水利工程, 序贯抛填法, 特大型深水漏洞封堵, 渗流计算

Abstract：Oversize deep water holes have occurred in Goupitan and many other hydropower stations. Therefore， it’s of great engineering value for emergency rescue to research on the rapid plug of oversize hole. Based on the characteristic of the large-scale deep water hole，this paper proposes a sequential riprap filling method，which includes reinforced gabion，stone ballast，composite geo-membrane，mold bag concrete and clay woven bag. An analytical calculation method of evaluate the plug effect is proposed. Finally，the riprap filling project is calculated by using analytical calculation method and finite element method. The results show that the seepage discharge can meet the requirements after the completion of plugging. Therefore，the sequential riprap filling plugging method can be applied successfully in plugging large-scale deep hole. The clay woven bag plays an important role in the plugging process. In order to guarantee the plugging effect，more attention should be paid to the quality of the filling of the clay woven bags. Attention should be paid to avoid the occurrence of local vacancies in the clay woven bags，especially for the clay woven bags at the bottom of the slope. A method for determining the optimum thickness of the clay woven bags is proposed.

Key words： hydraulic engineering sequential riprap filling method oversize deep water hole plugging calculation of seepage

引用本文:

任劼，党发宁，黄俊，潘峰. 序贯抛填法封堵特大型深水漏洞方案及优化研究[J]. 岩石力学与工程学报, 2016, 35(S2): 4001-4008.
REN Jie，DANG Faning，HUANG Jun，PAN Feng. Design scheme and optimum research of using the sequential riprap filling method plugging oversize deep water hole. , 2016, 35(S2): 4001-4008.

链接本文:

https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2016.0796 或 https://rockmech.whrsm.ac.cn/CN/Y2016/V35/IS2/4001

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