水利工程隧洞施工超欠挖控制

分析隧洞开挖超欠挖的影响因素,阐述实际施工中对超欠挖控制解决的方法与途径,包括提高人工钻井的精度,解决好爆破参数的匹配,做好测量放样的控制,随着地质条件的变化调整爆破参数及施工方法,强化现场施工组织管理等。

Controlling Over-excavation and Under-excavation in the Process to Construct Hydraulic Tunnel

The paper analyzes the factors that influences the over-excavation and under-excavation in the process to construct a hydraulic tunnel and states the methods and ways to control and solve the over-excavation and under- excavation problems, including raising the accuracy of manual drilling, making good adaptation of the blasting parameters, doing good control on setting-out survey, adjusting blasting parameters and construction methods in pace with the change of geological conditions, strengthening the construction organization management in situ etc.