气压法顶管穿堤施工及沉降控制

顶管在施工过程中,会对所经过的土体产生扰动和切削,进而使地面发生沉降。顶管穿越钱塘江大堤,是一项有风险和难度较大的工程。该文结合某污水处理厂顶管工程成功穿越钱塘江大堤的经验,分析气压法顶管施工对大堤沉降的影响因素,并采取一系列技术措施,使施工对堤身的影响降至最低程度。

Pipe Jacking Construction by Air Pressure Method and Settlement control in Crossing Dike

In the course of pipe jacking construction,the soil will be disturbed and cut so as to make the ground in settlement.The pipe jacking to cross Qiantang River Dike is the highly risky and difficult project.Combined with the experience of successfully crossing Qiantang River Dike in the pipe jacking project of a wastewater treatment plant,the article analyzes the influence of pipe jacking construction by air pressure method on the dike settlement,and analyzes a series of technical measures to make the influence on the dike body decrease to minimum level.