| 岩溶地基土洞塌陷评价及处理 |
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| 引用本文： | 刘之葵,谢永雄. 岩溶地基土洞塌陷评价及处理[J]. 灾害学, 2007, 22(3): 77-80 |
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| 作者姓名： | 刘之葵 谢永雄 |
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| 作者单位： | 1. 中南大学资源与安全工程学院,湖南,长沙,410083;桂林工学院,土木工程系,广西,桂林,541004
2. 桂林工学院,土木工程系,广西,桂林,541004 |
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| 基金项目： | 广西教育厅科研项目（桂教科研[2004]20号） |
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| 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0.15~0.30 MPa,地基处理效果好。
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| 关 键 词： | 岩溶地基 土洞 稳定性 压力灌浆 |
| 文章编号： | 1000-811X（2007）03-0077-04 |
| 修稿时间： | 2007-02-09 |
Evaluation and Treatment of Soil Cave Collapse in Karst Ground |
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| Liu Zhikui,Xie YongXiong. Evaluation and Treatment of Soil Cave Collapse in Karst Ground[J]. Journal of Catastrophology, 2007, 22(3): 77-80 |
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| Authors: | Liu Zhikui Xie YongXiong |
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| Affiliation: | School of Resources and Safety Engineering, Central South University, Changsha 410083, China; Department of Ciuil Engineering, Guilin Institute of Technology, Cuilin 541004, China |
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| Abstract: | 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. |
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| Keywords: | karst ground soil cave stability pressure for grouting |
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