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  本文選題：復合邊坡 + 穩(wěn)定性�。� 參考：《遼寧工程技術(shù)大學》2015年碩士論文

【摘要】：露天礦邊坡穩(wěn)定性問題是同時涉及礦山安全和經(jīng)濟效益的關(guān)鍵問題,神華準東露天礦首采區(qū)采場東幫、外排土場西幫二者構(gòu)成土-巖復合邊坡,且采場邊坡、外排土場邊坡基底均為順傾,煤層頂?shù)装宕嬖谲浫鯅A層,均是不利于邊坡穩(wěn)定的影響因素。地面布置有排水渠、輸電線路等設(shè)施,一旦滑坡將產(chǎn)生極大危害。論文以神華準東露天礦采場、排土場構(gòu)成的土巖復合邊坡為工程背景,綜合運用現(xiàn)場調(diào)研、理論分析、極限平衡、數(shù)值模擬等方法和手段,對影響邊坡對影響邊坡穩(wěn)定性的因素進行探討,分析邊坡的潛在滑坡模式；優(yōu)化確定采場東幫、排土場西幫的穩(wěn)定幫坡角,同時對二者構(gòu)成的復合邊坡進行穩(wěn)定性分析,確定采場與排土場的安全距離；通過數(shù)值模擬手段對采場、排土場及二者構(gòu)成的復合邊坡的失穩(wěn)變形破壞規(guī)律和機理進行研究。研究結(jié)果表明：準東露天礦采場-排土場復合邊坡主要受巖土體物理學性質(zhì)、層位順傾、煤層頂?shù)装迦鯇涌刂?滑坡模式為沿排棄物內(nèi)部的圓弧滑動和以坡體出露弱層面為底界面的組合滑動。當采場為34°、排土場23°、安全距離為150m時復合邊坡可滿足安全儲備要求。
[Abstract]:The stability of open - pit slope is the key problem of mine safety and economic benefit . Both the east and the west side of the mining area of Shenghua quasi - east open - pit mining area form the soil - rock composite slope , and the slope of the mining field and the slope of the outer drainage area are the factors which are unfavorable to the stability of the side slope . The paper takes Shenghua quasi - east open pit mining field and the earth - rock composite slope as the engineering background , and comprehensively applies the field investigation , the theoretical analysis , the limit balance and the numerical simulation to study the factors that influence the stability of the slope , and analyzes the potential landslide model of the slope ;
the stability analysis of the composite slope composed of the two components is optimized to determine the safe distance between the mining field and the dump site ;
The failure law and mechanism of the composite slope composed of stope , dump and both are studied by numerical simulation . The results show that the composite slope of quasi - east open pit mining field - dump site is mainly controlled by the physical property , bedding forward inclination and weak layer control of the coal bed top floor . The landslide model is the combination sliding along the circular arc sliding inside the waste dump and the weak layer of slope body as the bottom interface . When the mining field is 34 擄 , the dump field is 23 擄 , the safety distance is 150 m , the composite slope can meet the safety reserve requirement .

【學位授予單位】：遼寧工程技術(shù)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD824.7

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本文編號：1771519