1983年12月,煤炭工业部技术发展司和基建司在淮北特凿公司联合主持了DZJ500-1000冻结注浆钻机的鉴定会。 该钻机是根据部(80)煤基建局字第四号文件由石家庄煤矿机械厂、特凿公司和北京煤炭科学院建井所三单位协作研制成功的。研制目的是解决深井冻结和深井注浆打钻关键技术问题。 DZJ500-1000钻机的技术特征及结构特点,已在《建井技术》1982年第3期中有所报道,这是一种转盘式钻机,其主要参数 December 1983, the Ministry of Coal Industry Technology Development Division and the Infrastructure Division in Huaibei Special Chisel co-chaired the DZJ500-1000 frozen grouting rig identification. The rig was successfully developed in collaboration with Shijiazhuang Coal Mine Machinery Factory, Special Chisel Company and the three units of Mine Construction Institute of Beijing Coal Mining Academy based on the fourth Coal Mine Construction Bureau Document No. 4 of Ministry of Construction (80). The purpose of research and development is to solve the key technical issues of deep well freezing and deep well grouting. The technical features and structural features of the DZJ500-1000 rig have been reported in “Well Construction Technology”, No. 3, 1982, which is a rotary table drilling rig whose main parameters