一、发展慨况由于煤炭建设的需要,特别是华东煤田流砂层厚、涌水量大,采用普通凿井法不能完成凿井任务,冻结法在表土层较厚时,目前尚有困难,为此,竖井钻井法得以产生。我国竖井钻机的发展,经历了从石油配套钻机的半工业试验到专门设计的竖井钻机的工业性试验阶段。1966年,煤炭科学研究院建井所、洛阳矿山机器厂、洛阳矿山机械研究所及 I. Development status Due to the need for coal construction, especially in the East China Coalfield, where the thickness of the sand bed is large and the amount of water inflow is large, it is impossible to complete the well-drilling task using ordinary drilling methods. When the freezing method is relatively thick on the surface soil layer, there are still difficulties. Shaft drilling was created. The development of China’s vertical drilling rigs has undergone a phase of industrial trials ranging from semi-industrial testing of oil drilling rigs to specially designed shaft drilling rigs. In 1966, the Institute of Coal Science and Construction Institute, Luoyang Mining Machinery Factory, Luoyang Mining Machinery Research Institute and