發(fā)布時(shí)間：2018-04-19 04:11

  本文選題：復(fù)合邊坡 + 穩(wěn)定性　； 參考：《遼寧工程技術(shù)大學(xué)》2015年碩士論文

【摘要】：露天礦邊坡穩(wěn)定性問(wèn)題是同時(shí)涉及礦山安全和經(jīng)濟(jì)效益的關(guān)鍵問(wèn)題,神華準(zhǔn)東露天礦首采區(qū)采場(chǎng)東幫、外排土場(chǎng)西幫二者構(gòu)成土-巖復(fù)合邊坡,且采場(chǎng)邊坡、外排土場(chǎng)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(zhǔn)東露天礦采場(chǎng)、排土場(chǎng)構(gòu)成的土巖復(fù)合邊坡為工程背景,綜合運(yùn)用現(xiàn)場(chǎng)調(diào)研、理論分析、極限平衡、數(shù)值模擬等方法和手段,對(duì)影響邊坡對(duì)影響邊坡穩(wěn)定性的因素進(jìn)行探討,分析邊坡的潛在滑坡模式；優(yōu)化確定采場(chǎng)東幫、排土場(chǎng)西幫的穩(wěn)定幫坡角,同時(shí)對(duì)二者構(gòu)成的復(fù)合邊坡進(jìn)行穩(wěn)定性分析,確定采場(chǎng)與排土場(chǎng)的安全距離；通過(guò)數(shù)值模擬手段對(duì)采場(chǎng)、排土場(chǎng)及二者構(gòu)成的復(fù)合邊坡的失穩(wěn)變形破壞規(guī)律和機(jī)理進(jìn)行研究。研究結(jié)果表明：準(zhǔn)東露天礦采場(chǎng)-排土場(chǎng)復(fù)合邊坡主要受巖土體物理學(xué)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(dòng)和以坡體出露弱層面為底界面的組合滑動(dòng)。當(dāng)采場(chǎng)為34°、排土場(chǎng)23°、安全距離為150m時(shí)復(fù)合邊坡可滿(mǎn)足安全儲(chǔ)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(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TD824.7

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本文編號(hào)：1771519