本文選題：巷道頂板　切入點(diǎn)：危險(xiǎn)區(qū)域　出處：《中國(guó)有色金屬學(xué)報(bào)》2017年05期 　論文類型：期刊論文

【摘要】：在銅坑礦92號(hào)礦體裂隙礦巖崩落法開(kāi)采區(qū)域選取試驗(yàn)區(qū),闡述崩落法回采過(guò)程巷道頂板危險(xiǎn)區(qū)域確定的解構(gòu)法和數(shù)值模擬法的具體內(nèi)涵,對(duì)兩種方法計(jì)算結(jié)果及差異性進(jìn)行分析比較。結(jié)果表明:解構(gòu)法能夠準(zhǔn)確解算危險(xiǎn)結(jié)構(gòu)體可能失穩(wěn)的形式和具體賦存位置,但其從矢量角度確立的危險(xiǎn)結(jié)構(gòu)體數(shù)量、危險(xiǎn)區(qū)域分布范圍比真實(shí)情況略小,巷道穩(wěn)定性結(jié)果略高;數(shù)值模擬法考慮卸荷和爆破作用影響,對(duì)回采過(guò)程頂板下沉、結(jié)構(gòu)體失穩(wěn)狀態(tài)分析較準(zhǔn)確,但采用虛擬裂隙面控制結(jié)構(gòu)面發(fā)育范圍,導(dǎo)致確立的危險(xiǎn)結(jié)構(gòu)體數(shù)目過(guò)多,巷道穩(wěn)定性比工程實(shí)際略低;工程應(yīng)用中應(yīng)以解構(gòu)法為主、數(shù)值模擬法為輔,綜合確定巷道頂板危險(xiǎn)區(qū)域。
[Abstract]:In this paper, the test area of caving mining area of No. 92 orebody fissure in Tongkeng Mine is selected, and the concrete connotation of deconstruction method and numerical simulation method for determining the dangerous area of roadway roof during caving mining process is expounded. The results and differences of the two methods are analyzed and compared. The results show that the deconstruction method can accurately calculate the form and location of the possible instability of dangerous structures, but the number of dangerous structures established from the angle of vector. The distribution range of dangerous area is a little smaller than the real situation, and the result of roadway stability is slightly higher, the numerical simulation method, considering the effect of unloading and blasting, is more accurate in the analysis of roof subsidence and structural instability state during mining process. However, the virtual fracture surface is used to control the development of the structural plane, which leads to too many dangerous structure bodies being established, and the roadway stability is slightly lower than that of the engineering practice. In engineering application, the deconstruction method should be the main method, and the numerical simulation method should be used as the auxiliary. The dangerous area of roadway roof is determined synthetically.
【作者單位】： 廣西大學(xué)資源與冶金學(xué)院;中南大學(xué)資源與安全工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(41402306) 廣西自然科學(xué)基金重點(diǎn)項(xiàng)目(2014GXNSFDA118034) 廣西科學(xué)研究與技術(shù)開(kāi)發(fā)計(jì)劃項(xiàng)目(桂科攻14251011)~~
【分類號(hào)】：TD327.2;TD853.36

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