近海大块石回填区域塑性防渗墙施工技术

通过位于大块石回填区域的塑性防渗墙的施工案例,重点介绍新、老防渗墙连接方式,在松散回填层上构建施工平台时的防坍塌处理措施,大块石回填层钻孔斜率控制及钻进方法,漏浆、塌孔、卡钻等几种特殊情况的处理方法和施工质量控制措施.针对塑性防渗墙设计中由于指标较多、指标间相互制约所造成的现场施工控制困难,结合实际施工案例提出优化建议...

Construction Technique of Plastic Anti-leakage Diaphragm Wall in Coastal Large Rubble Backfilling Area

By analyzing the construction example of plastic anti-leakage diaphragm wall located in large rubble backfilling area,the connection method of new and old anti-leakage diaphragm wall,anti-collapse measure for construction platform on the unconsolidated backfilling layer,bore slope control and drilling method of large rubble backfilling layer,the treatment method for several special conditions such as slurry-leakage,bore collapse and drill locking and construction quality control measures are introduced emphatically.Aiming at the condition the indexes in the design of plastic anti-leakage diaphragm wall are more,and the mutual restriction of those indexes cause the difficulty in site construction control,combining with actual construction cases,the optimized advices are proposed.It will provide the references for the similar projects.