上海翔殷路隧道盾构进洞口地基处理技术

Xiangyin River-crossing Road Tunnel Subgrade Treatment in Shield Breaking-in Area

在砂性土层中采用深层搅拌法结合高压旋喷法和井点降水进行地基处理,保证了大型泥水平衡盾构的顺利进洞。对加固区范围的确定、深层搅拌桩和高压旋喷桩及井点降水的施工、施工效果的预检均作了较详细的叙述,为今后类似工程提供借鉴。

These measures of the deep mixing method combined with high pressure jet grouting and well-point dewatering in the sandy soil layer ensures the large slurry shield could smoothly breaks in the shaft.The determination of the consolidation range and construction and the effect pre-check of deep mix churning pile,high pressure jet grouting pile and well-point dewatering are introduced in detail,providing a reference for the similar projects.