發(fā)布時間：2018-06-03 12:43

  本文選題：急傾斜中厚礦體 + 高端壁無底柱分段崩落法�。� 參考：《金屬礦山》2017年05期

【摘要】：針對錫林浩特螢石礦實際生產(chǎn)中存在的采礦難度大,安全條件差,生產(chǎn)效率低等問題,提出了多作業(yè)面同時掘進、覆巖放礦+廢石充填的高端壁無底柱分段崩落法開采方案。給出了適合該類礦體的崩礦參數(shù),通過地表監(jiān)測及室內(nèi)試驗研究塌陷坑邊壁巖移的變化規(guī)律,提出協(xié)同排巖充填的方法,增強邊壁與散體堆的穩(wěn)定性,并依此在錫市螢石礦試驗采場進行了試驗。跟班標定結果表明:該采礦方法回收率較高(達到94.18%),崩落礦石塊度良好,與分析情況基本吻合,可有效解決此類急傾斜中厚礦體開采難題。
[Abstract]:In view of the problems existing in the practical production of Xilinhaote fluorite mine, such as the difficulty of mining, poor safety conditions and low production efficiency, the mining scheme of sublevel caving method without bottom pillar of high wall is put forward, which can be excavated at the same time with multiple working surfaces and filled with waste rock from overburden rock drawing. The caving parameters suitable for this kind of orebody are given. Through the surface monitoring and laboratory test, the variation law of the rock movement of the edge wall of the collapse pit is studied, and the method of synergetic drainage and filling is put forward to enhance the stability of the side wall and the bulk pile. Based on this, tests were carried out in the test stope of Xishi Fluorite Mine. The calibration results show that the mining method has a high recovery rate (94.18%) and a good lump size of caving ore, which is in good agreement with the analysis, and can effectively solve the mining problem of this kind of steeply inclined medium thick ore body.
【作者單位】： 東北大學資源與土木工程學院;
【分類號】：TD871.5
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本文編號：1972820