基于深层搅拌法的水泥搅拌桩在鲁皂水库重力坝坝基渗流中的应用  

The Application of Cement Mixing Pile Based on Deep Mixing Method in the Seepage of Gravity Dam Foundation of Luzao Reservoir

作　　者：何万信 HE Wan-xin(Xingren Water Authority Jianshan Reservoir Management Office,Xingren 562300,Guizhou,China)

机构地区：[1]兴仁市水务局尖山水库管理所,贵州兴仁562300

出　　处：《水利科技与经济》2024年第1期48-52,57,共6页Water Conservancy Science and Technology and Economy

摘　　要：为了分析鲁皂水库重力坝坝基深层搅拌桩的防渗技术,针对复合地基的设计和沉降规律进行研究,并对坝基的渗流过程进行模拟和评价。结果表明,当深层搅拌桩的使用率为20%或25%时,复合地基的沉降量随着桩长比的增加而减小,置换率的增加使复合地基沉降量减小。当无深层搅拌桩或14m深层搅拌桩时,坝基断面的渗透流速分别为1.016×10^(-5)和8.002×10^(-6) m^(3)/s。研究表明,大坝的渗透系数对其渗透性有一定的影响;大坝的渗透系数越低,其渗透性就越低。In order to analyze the anti-seepage technology of deep mixing piles in the gravity dam foundation of Lushao reservoir,the design and settlement law of composite foundation were studied,and the seepage process of the dam foundation was simulated and evaluated.The research results indicate that when the usage rate of deep mixing piles is 20%or 25%,the settlement of composite foundation decreases with the increase of pile length ratio,and the increase of replacement rate leads to a decrease in the settlement of composite foundation.When there is no deep mixing pile or 14m deep mixing pile,the seepage flow rates of the dam foundation section are 1.016×10^(-5) and 8.002×10^(-6) m^(3)/s.The permeability coefficient of a dam has a certain impact on its permeability.The lower the permeability coefficient of a dam,the lower its permeability.

关 键 词：深层搅拌桩 水泥 坝基 渗流 加固 鲁皂水库 

分 类 号：TU753.3[建筑科学—建筑技术科学]