钱塘江两岸深基坑突涌问题分析

Analysis over inrushing of deep foundation pit on both sides of the Qiantang River

结合多个钱塘江两岸地下三层(及以上)的基坑项目,探讨了杭州地区深基坑的突涌问题。分析了土体抗剪强度在抗突涌中的作用,提出了相应的技术处理措施,其中详细分析了采取满堂加固形式处理突涌的措施。计算结果表明,土体抗剪强度在抗突涌中发挥了较大作用,挖土中采用分块施工可有效提高抗突涌能力。

Combining with multiple deep foundation pits on both sides of the Qiantang River, it explores the inrushing of soil and water of deep foundation pit, analyzes the soil shear strength of the role of the anti-inrushing stability, and puts forward the corresponding technical measures, including a detailed analysis on soil reinforcement measures. The calculation result indicates that the soil shear strength has played a larger role in the anti-inrushing. The block segmentation construction can effectively improve the anti-surge capacity.