| 浅淡岩溶地区冲孔灌注桩桩基扩孔系数的降低与成效 |
| |
| 引用本文： | 萧志勇.浅淡岩溶地区冲孔灌注桩桩基扩孔系数的降低与成效[J].土工基础,2009,23(1). |
| |
| 作者姓名： | 萧志勇 |
| |
| 作者单位： | 广州市第一市政工程有限公司,广州,510060 |
| |
| 摘 要： | 广州华南路三期工程第B3标段,大部分钻探孔均出现岩溶现象。发育于石炭系中上统壶天群灰岩中,深度一般为14.50m～47.20m不等;溶洞处于充填、半充填状态,部分为空溶洞,充填物多为软塑状粘土;地下水活动较为强烈;溶洞顶板薄,规模大,在自然条件下存在产生塌陷的隐患。对其产生的原因进行了分析,并提出了处理方法和预防措施。
|
| 关 键 词： | 桩基扩孔 塌陷的隐患 降低 系数 |
Reaming Coefficient Reduce and Its Effect of Punched Pile Foundation in Karst Region |
| |
| XIAO Zhi yong.Reaming Coefficient Reduce and Its Effect of Punched Pile Foundation in Karst Region[J].Soie Engineering and Foundation,2009,23(1). |
| |
| Authors: | XIAO Zhi yong |
| |
| Affiliation: | XIAO Zhi yong(Guangzhou No.1 Municipal Engineering Co. Ltd; Guangzhou 510060; China); |
| |
| Abstract: | The most boring holes are in the Karst region in Huanan Road Engineering in Guangzhou,which are developed in the Hutian limestone of middle-upper carbonic and the depth is about 14.50 m~47.20 m. Karst caves are full filled,half-filled,or generally not filled. Fillings are soft plastic clay and there are apparent ground water activities. The roof of karst cave is thin and large scale,which has the hidden risk of collapse. Reasons of initiation of it are analyzed and countermeasures are suggested. |
| |
| Keywords: | reaming of pile foundation hidden risk for collapse reduce coefficient |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
