价值工程
價值工程
개치공정
VALUE ENGINEERING
2014年
2期
292-293
,共2页
急倾斜矿体%有限元%采空区%上覆岩层
急傾斜礦體%有限元%採空區%上覆巖層
급경사광체%유한원%채공구%상복암층
inclined orebody%finite element%mined-out area%overlying strata
开采扰动下采空区上覆岩层将产生位移和应力的重新分布。为研究云南某急倾斜铁矿在持续开采下空区上覆岩层移动和破坏情况，根据实验室试验得到的矿山岩体力学参数，建立了矿山有限元模型。对矿体的开采进行了模拟，得到该矿体逐层开挖后上覆岩层最大主应力和地表下沉值的分布图，综合分析急倾斜矿体持续开挖对采空区上覆岩层产生的影响。
開採擾動下採空區上覆巖層將產生位移和應力的重新分佈。為研究雲南某急傾斜鐵礦在持續開採下空區上覆巖層移動和破壞情況，根據實驗室試驗得到的礦山巖體力學參數，建立瞭礦山有限元模型。對礦體的開採進行瞭模擬，得到該礦體逐層開挖後上覆巖層最大主應力和地錶下沉值的分佈圖，綜閤分析急傾斜礦體持續開挖對採空區上覆巖層產生的影響。
개채우동하채공구상복암층장산생위이화응력적중신분포。위연구운남모급경사철광재지속개채하공구상복암층이동화파배정황，근거실험실시험득도적광산암체역학삼수，건립료광산유한원모형。대광체적개채진행료모의，득도해광체축층개알후상복암층최대주응력화지표하침치적분포도，종합분석급경사광체지속개알대채공구상복암층산생적영향。
Mining disturbance will cause the redistribution of displacement and stress of depressing zones overlying a goaf. In order to study the mining goaf overlying strata movement and failure during the continuous mining of a inclined orebody of Yunnan, the finite element model of the iron mine were created according to the mining rock mechanics parameters obtained from the test laboratory. The distribution of maximum principal stress overlying strata and surface subsidence were obtained after layer by layer excavation of the orebody. Then comprehensive analysis of the continuous excavation effect of overlying strata of mined-out area.
