在毛主席无产阶级革命路线指引下,为了尽快使我国水文地质机械装备赶上先进水平,由河北省地质局水文队、水文四队、第七地质队,地质科学院勘探技术研究所,武汉地质学院和天津探矿机械厂等单位共同协作,于一九七二年八月研制成功了第一轮复合式水文水井钻机拖车式样机。经过迴转钻进试验和冲击钻进试验后,于一九七三年四月,进行了初步鉴 Under the guidance of Chairman Mao’s proletarian revolutionary line, in order to catch up with the advanced level in our country’s hydrogeological machinery and equipment as soon as possible, the Hydrology Team, the Hydrological Team, the Seventh Hydrogeology Team, the Seventh Geological Team of Hebei Geological Bureau, the Exploration Technology Institute of the Academy of Geological Sciences, the Wuhan Institute of Geology And Tianjin Prospecting Machinery Factory and other units to work together in August 1972 successfully developed the first round of composite hydropower wells driller trailer prototype. After the rotary drilling test and the impact drilling test, in April 1973, a preliminary test