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DL-200/30型螺杆泵在我队丰山矿区和黄梅地区使用，孔深达802米。螺杆泵的优点是：结构简单，重量轻，搬迁安装轻便；配件消耗费用低；易于维护保养，检修工时少，机械事故率低；有利于提高台月效率，降低成本。一、试用情况与各项主要技术经济指标黄梅地区地层破碎，坍塌掉块，漏水，孔深多在400～600米，要用高浓度泥浆防漏护壁，因而泥浆含砂量高，一般含砂量达1～5.8％，机场配备28千瓦电动机、北京—600型钻机与螺杆泵。丰山矿区个别层位破碎掉块，孔深500～800米，多数用泥浆钻进，泥
DL-200/30 type screw pump in my team Fengshan mining area and the use of Huangmei area, hole depth of 802 meters. Screw pump has the advantages of: simple structure, light weight, easy to move and install; accessories, low cost; easy maintenance, less maintenance man hours, low mechanical accidents; help to improve Taiwan efficiency, reduce costs. First, the trial conditions and the major technical and economic indicators Huangmei strata broken, collapsed blocks, water leakage, hole depth of more in the 400 to 600 meters, the use of high concentrations of mud leak-proof wall, and thus mud high sand content, generally containing sand The amount of 1 ~ 5.8%, the airport equipped with 28 kilowatts motor, Beijing -600 drilling rig and screw pump. Fengshan mining block broken individual blocks, hole depth 500 ~ 800 meters, the majority of mud drilling, mud