摘要
地下水（地表水）产生的渗透潜蚀作用、崩解作用等是土洞形成和发展的重要原因。对工程实例中的土洞，采用极限平衡法和压力拱分析法进行了稳定性判别。在土洞中充填砼，然后采用压力灌浆，灌浆所采用的水灰比为1：1-1：1．5，灌浆压力一般为0．15-0．30MPa，地基处理效果好。
The action of seepage erosion and disintegration produced by groundwater are important causation of the formation and development of soil cave. For an engineering case, the stability of soil cave is judged by the limit equilibrium method and the analysis method of pressure arch. In the process of ground treatment, concrete is firstly filled in soil cave, then the method of pressure grouting is used. The ratio of water and concrete is 1.1 - 1.5 and the pressure for grouting is generally 0. 15 -0. 30 MPa. The effect of ground treatment is perfect.
出处
《灾害学》
CSCD
2007年第3期77-80,共4页
Journal of Catastrophology
基金
广西教育厅科研项目(桂教科研[2004]20号)
关键词
岩溶地基
土洞
稳定性
压力灌浆
karst ground
soil cave
stability
pressure for grouting
