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某矿井是一个年产65万-70万吨的大型圆井,为该矿第一期主要建设工程之一,但当时由于机械设备供应紧张又加上交通运输不便,施工器材都由人力搬运,使工程陷于停顿状态。该矿针对这些情况,将原设计单行方式改为由下而上的开鑿先进天井(反井),再由上而下地扩井壁,以解决设备的困难,但是仍需要大量材料,因此又提出利用反井,由下而上地用留矿法的形式,向上打垂直炮眼扩壁,以矸石支填井邦,这样
A mine is an annual output of 650,000-700,000 tons of large round wells, the mine for the first phase of one of the major construction projects, but then due to tight supply of machinery and equipment coupled with inconvenient transportation, construction equipment by manpower handling, Put the project in a standstill In response to these circumstances, the mine changed the original design of a single-line approach to bottom-up excavation of advanced wells (anti-wells), and then from top to bottom to expand the wall to solve the difficulties of the equipment, but still requires a lot of material, and therefore Proposed the use of anti-wells, bottom-up with the retention of the form of law, up to fight the vertical expansion of the blasthole, with Bangui support filling state, so