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基德克里克矿是一个年产量达450万 t 的多金属矿山,采用两条竖井开拓,分段空场法事后废石胶结充填.1~#竖井深930m,回采浅部露天坑底以下至792m 水平的矿石,垂直走向布置矿房矿柱的分段空场法,矿房一般宽18m,长22～65m,高90～135m.间柱通常宽24m,顶底柱高30m,矿柱的回采一般是在矿房充填养护三个月之后进行的。2~#竖井深1530m,回采更深部矿石,采用从中央向两翼、由上盘到下盘推进,连续后退式回采,不留间柱.典型的采场宽15m,长30m,高60m,采后废石快速充填,相邻采场的回采,在充填体养护三个星期后进行.矿石年需废石胶结充填料250万 t,胶结料与骨料之比为1:20,年需水泥量12.5万 t,要求充填体在养生28天后抗压强度达到7MPa,以便在回采矿柱时能稳定地暴露高120m,长70m 的充填体。1982年,为节省水泥,在1~#井区60%的水泥用高炉渣代替;2~#井区33%的水泥被高炉渣代替。1984年后期,引入粉媒灰使用技术,进一步节约了成本,本文介绍其实验室试验及其实际中的应用.
The Kidd Creek Mine is a polymetallic mine with an annual production of 4.5 million tons, using two vertical shafts to open up and subsided the post-mortar cementation and filling process. To 792m level of ore, vertically to the layout of mine ore column section of the empty field method, the general mining house width 18m, length 22 ~ 65m, height 90 ~ 135m. The width of the column is usually 24m, 30m high top and bottom pillars, The mining is normally carried out three months after the filling of the mines. 2 ~ # vertical shaft 1530m deep, mining deeper ore, from the central to the two wings, from the plate to the plate advancement, continuous back-style mining, without column between the typical stope width 15m, length 30m, high 60m, mining After the rapid filling of waste rock, mining of adjacent stopes, after the filling body conservation for three weeks to be carried out ore ore binder required 2.5 million tons of cements, cements and aggregate ratio of 1:20, cement The amount of 125,000 t, requiring the body after 28 days of health compressive strength of 7MPa, in order to mining pillar can be stably exposed 120m high, 70m long filling body. In 1982, in order to save cement, 60% of the cement in 1 ~ # well area was replaced by blast furnace slag; and 33% of cement in 2 ~ # well area was replaced by blast furnace slag. In late 1984, the introduction of powder ash using technology, further cost savings, this article describes its laboratory tests and its practical application.