半合式单动双管钻具与植物胶在隧洞勘探中的协同应用OA

To address the challenges encountered in the exploration of water-diversion tunnel such as low core recov-ery rate,severe damage to the original structure,instability of the borehole walls,and environmental sensitivity caused by complex strata like fractured rock masses,a synergistic drilling technique combining split-tube single-action double-tube core barrel with plant gum flushing fluid is proposed.Field applications verified that it is able to significantly improve the geological stratification accuracy and engineering safety,providing a reliable technical path for the geological exploration of water diversion tunnels in complex mountainous strata.