近海土质条件复杂,含有大量透水性强的岩土,基岩面起伏大,开挖时要借助爆破,而爆破振动对止水结构有不利影响,本文着重研究了这些施工关键技术。提出了根据不同影响因素分区域分步开挖的方法、锚杆钻透帷幕漏水时的堵水措施以及减小基坑岩石爆破振动影响的一些措施,并给出了一个基坑岩石成功爆破施工的实例。 The coastal soil conditions are complex and contain a large amount of rock with strong water permeability. The bedrock surface fluctuates greatly. When excavation is carried out, the blasting is affected. However, the blasting vibration has an adverse effect on the water stopping structure. This paper focuses on these key construction technologies. According to different influencing factors, the method of sub-region excavation step by step was put forward, the water blocking measures when the bolt penetrated the curtain through water leakage and some measures to reduce the influence of the rock blasting vibration of the foundation pit. The successful blasting construction of a pit rock Example.