本文選題：巨厚黃土層 + 采煤沉陷　； 參考：《煤炭學(xué)報(bào)》2017年11期

【摘要】：近年來由于煤炭資源的高強(qiáng)度開采,黃土溝壑區(qū)因采煤沉陷引發(fā)的溝谷"對滑型"滑坡發(fā)育,且滑坡規(guī)模大,穩(wěn)定性差。以李前—白廂滑坡為例,在現(xiàn)場調(diào)查的基礎(chǔ)上,采用數(shù)值模擬分析的方法,探討了"對滑型"黃土滑坡的形成機(jī)制,總結(jié)了"對滑型"滑坡的形成條件。研究結(jié)果表明:在工作面跨溝回采過程中,上方黃土層指向采空區(qū)中心的位移向量與采煤擾動(dòng)作用下沿坡體傾斜的位移向量產(chǎn)生動(dòng)態(tài)疊加,導(dǎo)致"對滑型"滑坡的發(fā)生,且回采后到達(dá)一側(cè)的坡體往往早于先到達(dá)一側(cè)坡體滑坡;坡向與回采方向相同的一側(cè),滑坡類型為推移式,坡向與回采方向相反的一側(cè),滑坡類型為牽引式,且推移式滑坡規(guī)模往往大于牽引式滑坡。"對滑型"滑坡的形成需要具備4個(gè)主要條件:黃土坡體、溝谷地貌、采礦擾動(dòng)、降雨催化。
[Abstract]:In recent years, because of the high intensity mining of coal resources, the gully landslide caused by coal mining subsidence in the loess gully area has developed, and the landslide scale is large and the stability is poor. Taking Li Qian-Baixiang landslide as an example, on the basis of field investigation, the forming mechanism of "opposite slip" loess landslide is discussed by using numerical simulation analysis method, and the forming conditions of "opposite slide" landslide are summarized. The results show that the dynamic superposition of the displacement vector pointing to the center of the gob in the upper loess layer and the inclined displacement vector along the slope under the action of coal mining disturbance results in the occurrence of the "opposite slip" landslide. The slope body reached one side earlier than the first, the slope direction is the same as the mining direction, the landslide type is the displacement type, the slope direction is opposite to the mining direction, the landslide type is the traction type. And the scale of the bedded landslide is often larger than that of the traction landslide. " There are four main conditions for the formation of sliding landslide: loess slope, valley geomorphology, mining disturbance and rainfall catalysis.
【作者單位】： 礦山地質(zhì)災(zāi)害成災(zāi)機(jī)理與防控重點(diǎn)實(shí)驗(yàn)室;陜西省地質(zhì)環(huán)境監(jiān)測總站;西安科技大學(xué)地質(zhì)與環(huán)境學(xué)院;
【基金】：國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973)資助項(xiàng)目(2013CB227901)
【分類號(hào)】：P642.22;TD824

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