摘要
常见的岩溶地质灾害对建筑物地基的影响主要为地基承载力不足、溶洞、土洞、岩溶塌陷等。对地基土可塑性分布不均、承载力不足、溶洞发育的不良地基,使用水泥碎石挤密桩与水泥压力灌浆的复合地基处理方法进行处理,并对处理后的水泥碎石桩挤密桩地基和水泥压力灌浆地基分别进行强度验算及标准贯入试验,以检测复合地基承载力。结果表明,该复合地基处理方法对此类岩溶地基具有较好的处理效果,对类似的岩溶地基工程具有较好的参考意义。
The common geological hazards in the karst areas are： lack of bearing resistance, rock and soil cavities and sinkhole collapses. The compacted cement and gravel columns combined with the cement pressure grouting methods are used to treat the unfavorable grounds with uneven soil thickness with poor bearing capacity and highly developed karstic rock cavities. The bear- ing capacity of the treated ground is examined and verified with the standard penetration testing. The results indicated that the combination of compacted cement gravel columns combined with cement pressure grouting methods was successful in improving the soil foundations in the karst terrain.
出处
《土工基础》
2015年第5期76-77,80,共3页
Soil Engineering and Foundation
关键词
岩溶地基
复合地基
承载力不足
碎石挤密桩
水泥压力灌浆
Key words Foundations in Karst
Composite Ground Poor Bearing Capacity Compacted Gravel Columns
Cement PressureGrouting
