摘要
Abstract
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.关键词
引水隧洞/半合式单动双管钻具/植物胶/复杂地层/岩芯采取率Key words
water-diversion tunnel/split-tube single-action double-tube bore barrel/plant gum/complex strata/core recovery rate分类
天文与地球科学
