多年来，我队一直使用红星300型水井钻机，进行水文钻探，开孔口径528毫米，终孔口径274毫米，井深300米左右，地层全是基岩，大部分采用钢粒钻进。采岩心时，因岩心直径较粗，每次须投15至20公斤钢粒和30至40公斤石粒。在未用供给器前，投卡料时要停泵，用人工一点一点往井内倒，要用30分钟，既浪费时间，还可能因停泵时间过长造成井内埋钻事故。在此情况下，机长崔兰亭同志焊制了一个简易的岩心卡料供给器（见附图）。供给器是用274毫米岩心管制作的，供给器顶端安一个2英寸丝堵，下端联结一个2(1/2)英寸阀门，供给 Over the years, our team has been using the Red Star 300 water well drilling rig for hydrological drilling. The opening diameter is 528 mm, the final hole diameter is 274 mm, and the depth is about 300 meters. The strata are all bedrock and most of them are made of steel. Core mining, due to the coarser core diameter, each to be cast 15 to 20 kg of steel and 30 to 40 kg of stone tablets. In the unused feeder, feeding material to stop the pump, with a little bit down to the well, to use 30 minutes, not only a waste of time, but also may be due to stop pumping too long cause underground burial accident. Under the circumstances, Captain Cuilan Ting produced a simple core feeder (see photo). The feeder is made of a 274 mm core tube with a 2-inch plug at the top of the feeder and a 2 (1/2) inch valve at the bottom to supply