取样钻单管钻进，在质地松软怕冲刷、遇水膨胀，有塑性、粘性的岩矿层中，岩矿心采取率较低。为此，我们设计了一种分水岩心管接头，组成一套分水接头单管钻具（分水接头见附图）。这种接头，冲洗液沿钻 Single-pipe sampling drilling drilling, afraid of scouring in the soft texture, water swelling, plastic, viscous rock, rock core mining rate is lower. To this end, we have designed a sub-aquifer core pipe fittings, composed of a set of sub-pipe single-pipe tools (water splice see photo). This connector, flushing fluid along the drill