大冶铁矿尖林山车间广大职工,在上级党委的领导下,认真贯彻中共中央(70)71号文件精神,初步摸索出一些无底柱分段崩落采矿法通风防尘的经验。无底柱分段崩落采矿法是近几年来国内推广的一种高效率的采矿法,但是存在通风条件较差的缺点。职工形容说:“一处响炮,八处冒烟,对面不见人,汗水象雨淋”,井下防尘成了“老大难”问题。自1973年10月江西下垅现场会议以后,矿党委和车间党总支加强了对防尘工作的领导,与武汉冶金安全技术研究所、西安冶金学院、武汉钢铁学院等单位组成“三结合”试验小组,集中力量猛攻井下通 Under the leadership of the party committee under the leadership of the higher Party, the staff and workers of Dayilin Mountain Workshop in Daye Iron Mine seriously conscientiously implemented the spirit of document No. 71 of the CPC Central Committee (No. 70) and tentatively explored some experiences of ventilating and dust-proofing mining methods with subsections without subsidence. Subsidenceless pillar caving mining method is a highly efficient mining method promoted in China in recent years, but it has the disadvantage of poor ventilation conditions. Workers described as: “a ring gun, smoke everywhere, across from no one, sweat like rain,” the dust has become a downhole underground “problem.” Since October 1973 Jiangxi Xianyan on-site meeting, the coal party committee and workshop party reinforce the dust-proof work leadership, and Wuhan Metallurgical Safety Technology Institute, Xi’an Institute of Metallurgy, Wuhan Iron and Steel Institute and other units to form a “triple combination” Test group, focus on the fierce underground mine pass