袖阀管注浆法加固地基技术的改进与应用  

Improvement and Application of Sleeve-valve-pipe Grouting Method

作　　者：周志军[1] 何剑[1] 彭帝[1] 吕大伟 

机构地区：[1]长安大学公路学院,陕西西安710064 [2]广东省路桥建设发展有限公司,广东广州510635

出　　处：《地球科学与环境学报》2014年第3期130-135,共6页Journal of Earth Sciences and Environment

摘　　要：针对传统袖阀管注浆法的跑浆串浆现象以及在地基中产生明显的挤土效应问题,提出了双阀布袋袖阀管注浆法,即在常规袖阀管外套上高强纺织土工密封布袋,并在外侧固定配有阀门的塑料排水板;结合梅汕高速公路工程现场试验,探讨了双阀布袋袖阀管注浆法的应用对桥台、路基变形及孔隙水压力的影响。结果表明:双阀布袋袖阀管注浆法可以有效控制串浆跑浆现象,注浆间歇期各深度孔隙水压力消散较快,挤土影响范围可控制在6m左右且持续时间相对较短;运营期加固处理工程不宜直接设置塑料排水板。In order to solve the problem of the grout loss and leaking and the soil compacting effect in foundation by the traditional sleeve-valve-pipe grouting method,the bivalve sack sleevevalve-pipe grouting method was put forward.The improvement of the new method included that high-strength textile seal sack for soil engineering covered the conventional sleeve-valve-pipe,and plastic drainage plate with valve was fixed on the outside.According to the field test on Mei-Shan expressway construction,the effects of the application of bivalve sack sleeve-valve-pipe grouting method on bridge abutment,subgrade deformation and pore water pressure were discussed.The results show that the improved method can prevent the grout loss and leaking,pore water pressures for different depths of grouting holes dissipate fast,and the influence range of soil compacting effect is about 6mand the duration is short;plastic drainage plate is unfavorable for reinforcement treatment engineering in operational period.

关 键 词：地基处理 袖阀管注浆法 孔隙水压力 挤土效应 变形 

分 类 号：U445.552[建筑科学—桥梁与隧道工程] TU753.8[交通运输工程—道路与铁道工程]