Construction Technology of Borehole Sampling in Hydropower Station Overburden Based on Sonic Drilling Rig
In order to improve the quality and efficiency of geological exploration of overburden of hydropower station,the drilling and sampling construction technology based on acoustic drilling rig is studied.By analyzing the working principle of acoustic drilling rig and its application in the overburden of hydropower station,the implementation process and effect of this technology are expounded in detail with specific engineering cases.Sonic drilling rig combines high-frequency vibration with rotary drilling,which effectively reduces formation disturbance,accelerates drilling speed and ensures high quality of samples.Through the analysis of construction preparation,hole-forming construction and data processing,the superior performance of acoustic drilling rig under complex geological conditions is demonstrated.The research shows that the sampling quality and working efficiency can be significantly improved by using acoustic drilling rig to sample overburden holes,which provides a more reliable geological basis for hydropower station design.
sonic drilling righydropower station overburdenborehole sampling
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