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1980年长沙矿山研究院有18个科研项目通过了技术鉴定。这些项目在技术上达到了先进水平,为我国矿山开采技术的发展,提供了新的设备和手段。 ·AT150型天井钻机 本机是继1978年TYZ500型天井牙轮钻机鉴定后,用钻进法掘天井的又一大型设备,系由主机、AT—M6.3液压马达和φ1.5米天井扩孔刀头组成(共三项成果),可以在地下矿山各种岩层中钻进直径1.2～2.0米、深12O米的天井。钻孔时,其推力为65吨,扭矩为1.344吨米;扩孔时,其拉力为115吨,扭矩为6.887吨米;钻井的偏斜<1％。
In 1980 Changsha Institute of Mining has 18 scientific research projects passed the technical appraisal. These projects have reached the advanced level technically and provided new equipment and means for the development of mining technology in our country. · AT150-type patio rig This machine is another large-scale equipment for digging the well by drilling method after the TYZ500 type of patio roller rig in 1978. It is composed of main machine, AT-M6.3 hydraulic motor and φ1.5m patio Hole cutter head (a total of three results), you can drill in a variety of underground mines in the diameter of 1.2 to 2.0 meters, 12O meters deep patio. Drilling, the thrust of 65 tons, the torque of 1.344 tons of meters; reaming, the pulling force of 115 tons, the torque of 6.887 tons of meters; drilling deflection <1%.