黄草坝水库深层搅拌水泥桩截渗墙处理技术

岩溶地区库区渗漏一直是水工设计中的难点问题,在黄草坝水库扩建工程的防渗处理中,采用粘土铺盖结合深层搅拌桩截渗墙技术对岸坡灰岩出露地区及第三系砂土地基覆盖层进行防渗处理,有效地解决了库区渗漏问题,使水库的建设顺利进行。防渗处理后的质量检测结果表明,粘土斜墙铺盖填筑质量满足要求,整体防渗效果好,渗透系数≤1.O×10-6cm/s;截渗墙墙体连续,质量好,吕容值<5 Lu,防渗效果可靠。

Disposal technology of deep mixing pile cutoff wall for the Huangcaoba Reservoir

The seepage in the karst region is key to the design of hydraulic structures. In the treatment of seepage of the extension project of Huangcaoba Reservoir, the clay blanket combining with deep mixing pile catch wall was adopted for the seepage control of the region with bank slope grey rock exposure and the cap of the third series sand foundation, which has effectively solved the seepage problem in the reservoir area and made the construction of the reservoir smooth. The check results showed that the quality of clay blanket can meet the requirements and the effectiveness of integral seepage control is good and reliable.