During the construction of urban underground engineering ,there are some problems, such as penetrative destruction, dewatering in local, uplift pressure and corrosivity etc.

• 城市地下工程在其施工过程中常因渗透破坏、降水、浮托力、腐蚀性等问题,严重影响地下工程的建设和周围建筑环境的安全。