土石坝除险加固超薄防渗墙组合防渗技术研究  

Research on combined anti-seepage technology of ultra-thin anti-seepage wall for risk removal reinforcement of earth rock dam

作　　者：吴天奇 翟泽冰 WU Tianqi;ZHAI Zebing(Jiangxi Water Resources Planning Design and Research Institute,Nanchang 330029,China;0x09Jiangxi Hydraulic Structure Engineering Technology Center,Nanchang 330029,China)

机构地区：[1]江西省水利规划设计研究院,江西南昌330029 [2]江西省水工结构工程技术中心,江西南昌330029

出　　处：《水利建设与管理》2020年第11期12-16,共5页Water Conservancy Construction and Management

基　　金：江西省水利厅科技成果重点推广项目(TG201206)。

摘　　要：中小型土石坝坝基及坝体防渗工程中,单一防渗技术在防渗深度、防渗墙厚度和工程投资经济性等方面很难兼顾。针对七里坡土石坝病险现状,将高喷灌浆与振动沉模两种技术相结合,提出组合防渗墙结构。围井钻孔试验测试结果表明,防渗墙连续完整、均匀密实度好,抗压强度及渗透指标均满足规范要求。组合防渗技术在保证防渗效果的基础上,通过技术优势互补,兼顾了施工工效和投资经济效益。It is hard to balance the aspects of anti-seepage depth,anti-seepage wall thickness and project investment economy for single anti-seepage technology used dam foundation and body seepage control projects of medium and small earth rock dam.A combined anti-seepage wall structure is proposed by combining high-pressure jet grouting with vibration sinking mold technology in view of the present situation in Qilipo Earth Rock Dam.The test results of surrounding well drilling show that the anti-seepage concrete wall is continuous,complete,uniform and dense,and its compressive strength and permeability index can meet design specifications requirements.The combined anti-seepage technology has high construction efficiency and investment economic benefits by mutural complementing technical advantages on the basis of ensuring the anti-seepage effect.

关 键 词：土石坝 除险加固 防渗墙 高喷灌浆 振动沉模 

分 类 号：TV223.42[水利工程—水工结构工程]