本文選題：充填采礦法　切入點(diǎn)：高窄型充填采場(chǎng)　出處：《中國(guó)安全生產(chǎn)科學(xué)技術(shù)》2016年07期

【摘要】：以地下礦山充填采場(chǎng)為研究對(duì)象,采用理論分析與數(shù)值模擬相結(jié)合的方法,對(duì)高窄型垂直和傾斜充填采場(chǎng)內(nèi)的拱效應(yīng)及應(yīng)力分布狀態(tài)進(jìn)行了研究。研究結(jié)果表明:實(shí)例中高窄型采場(chǎng)內(nèi)充填體的自重應(yīng)力為1.06 MPa,經(jīng)拱效應(yīng)轉(zhuǎn)移后,底板處的垂直應(yīng)力僅為0.35 MPa;改進(jìn)的馬斯頓理論計(jì)算傾角小于80°的充填采場(chǎng)應(yīng)力分布情況時(shí)結(jié)果偏大;采場(chǎng)傾角越大,高窄型充填體內(nèi)拱效應(yīng)越明顯,靠近圍巖兩幫處的應(yīng)力值也越大,而采場(chǎng)中線處的水平應(yīng)力幾乎不受影響。對(duì)高窄型采場(chǎng)內(nèi)充填體的目標(biāo)強(qiáng)度進(jìn)行設(shè)計(jì)時(shí),應(yīng)考慮拱效應(yīng)對(duì)其自重應(yīng)力的轉(zhuǎn)移作用,以降低相關(guān)經(jīng)濟(jì)技術(shù)指標(biāo)。
[Abstract]:The arch effect and stress distribution in high narrow vertical and inclined filling stope are studied by combining theoretical analysis with numerical simulation.The results show that the gravity stress of the backfill in the high narrow stope is 1.06 MPA, and after the arch effect is transferred,The vertical stress at the bottom plate is only 0.35 MPA, the calculated stress distribution of filling stope with inclination angle less than 80 擄is larger by the improved Marston theory, and the arch effect of high narrow filling is more obvious when the slope angle of stope is larger.The stress value near the two sides of surrounding rock is larger, but the horizontal stress in the middle line of stope is almost unaffected.In order to reduce the relevant economic and technical indexes, the transfer effect of arch effect on gravity stress should be taken into account in the design of the target strength of backfill in high narrow stope.
【作者單位】： 東北大學(xué)資源與土木工程學(xué)院;
【基金】：“十二五”國(guó)家科技支撐計(jì)劃項(xiàng)目(2011BAB07B02,2012BAJ17B01,2012BAJ17B02)
【分類號(hào)】：TD853.34

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