矿业工程
礦業工程
광업공정
MINING ENGINEERING
2014年
3期
18-20
,共3页
无底柱分段崩落法%崩落体%损失贫化%放矿理论
無底柱分段崩落法%崩落體%損失貧化%放礦理論
무저주분단붕락법%붕락체%손실빈화%방광이론
non-pillar sublevel caving%caved ore body%loss and dilution%ore-drawing theory
针对无底柱分段崩落法矿石损失贫化大的特点，将落矿分为挤压和沉实两个阶段进行分析。研究落矿挤压中爆破冲击及地压综合作用对崩落矿石散体端面形态具有影响，端面矿岩边界可表示为线性或非线性关系，并分析沉实过程对崩落体塌陷区形成的重要作用，说明废石过早进入回采近路致使矿石损失贫化的原因。最后应用随机介质放矿理论分析沉实过程，推断未正式放矿前的崩落体形态。
針對無底柱分段崩落法礦石損失貧化大的特點，將落礦分為擠壓和沉實兩箇階段進行分析。研究落礦擠壓中爆破遲擊及地壓綜閤作用對崩落礦石散體耑麵形態具有影響，耑麵礦巖邊界可錶示為線性或非線性關繫，併分析沉實過程對崩落體塌陷區形成的重要作用，說明廢石過早進入迴採近路緻使礦石損失貧化的原因。最後應用隨機介質放礦理論分析沉實過程，推斷未正式放礦前的崩落體形態。
침대무저주분단붕락법광석손실빈화대적특점，장락광분위제압화침실량개계단진행분석。연구락광제압중폭파충격급지압종합작용대붕락광석산체단면형태구유영향，단면광암변계가표시위선성혹비선성관계，병분석침실과정대붕락체탑함구형성적중요작용，설명폐석과조진입회채근로치사광석손실빈화적원인。최후응용수궤개질방광이론분석침실과정，추단미정식방광전적붕락체형태。
Non-pillar sublevel caving can give rise to large ore loss and dilution rate and in view of this attribute,ore-drawing is analyzed at two stages:extrusion and settling.The study shows that comprehensive effect of blasting shock and ground pressure has some effect on surface form of caved ores and face rocks boundary can be linear or non-linear.And the important role that settling plays in the formation of subsidence area of collapsed body is also analyzed and the results show that the premature entry of waste rocks into stope short-cut leads to ores loss and dilution.In the end, the settling stage is analyzed in the stochastic medium theory of ore drawing and ores body form before caving in is inferred.
