高压旋喷桩在大跨径隧道明洞基底处理中的应用

Application of High- pressure Jet Grouting piles in Treatment of Long- span Tunnel Basement

根据兰州市九州地区地质条件,提出了在隧道明洞软基处理中采用高压旋喷桩复合地基处理的方案。通过计算并结合工程实例及现场载荷试验,证明了该方案的可行性。

Based on the geological condition of Jiuzhou Area of Lanzhou, the article proposes the high- pressure jet grouting pile complex subgrade treatment scheme used in the treatment of soft subgrade of tunnel basement. The feasibility of this scheme is validated according to the calculation and the engineering cases and site load tests.