本文選題：深部巖體　切入點(diǎn)：彈性模量　出處：《東北大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：近年來(lái),國(guó)內(nèi)許多礦山已經(jīng)由淺部開(kāi)采轉(zhuǎn)入深部地下開(kāi)采,隨著開(kāi)采深度的增加,高地應(yīng)力問(wèn)題對(duì)工程的影響越發(fā)明顯,特別是礦山采場(chǎng)在進(jìn)行爆破落礦時(shí)的力學(xué)行為對(duì)巖體的擾動(dòng)作用更加突出。深部高地應(yīng)力環(huán)境下礦山開(kāi)挖過(guò)程中圍巖表現(xiàn)出特殊的非線性力學(xué)行為使得傳統(tǒng)的巖體(石)力學(xué)理論與分析方法面臨著新的挑戰(zhàn)。深部地下洞室在開(kāi)挖過(guò)程中,洞室表層圍巖會(huì)出現(xiàn)大量微破裂,在二次應(yīng)力場(chǎng)調(diào)整過(guò)程中,這些微破裂逐步擴(kuò)展貫通導(dǎo)致圍巖的完整性逐步降低。由于表層圍巖出現(xiàn)片幫、板裂以及塌落等現(xiàn)象,現(xiàn)場(chǎng)難以通過(guò)鉆孔取樣對(duì)表層損傷區(qū)巖塊的彈性模量進(jìn)行測(cè)試,從而無(wú)法確定損傷巖體的彈性模量。主要研究?jī)?nèi)容如下： (1)基于損傷力學(xué)原理和巖石力學(xué)理論,采用巖石的損傷變量來(lái)研究損傷巖體的彈性模量,結(jié)合現(xiàn)場(chǎng)鉆孔聲波測(cè)試技術(shù)及泊松比、巖體密度與巖體波速等經(jīng)驗(yàn)公式,確定損傷變量。 (2)以撫順紅透山銅礦-707中段27采場(chǎng)為工程研究背景,在結(jié)合現(xiàn)有金屬礦深部地下開(kāi)采工程研究的基礎(chǔ)上,采用聲波測(cè)試、鉆空攝像等多種手段對(duì)現(xiàn)場(chǎng)進(jìn)行監(jiān)測(cè),結(jié)合數(shù)值模擬計(jì)算的方法及經(jīng)驗(yàn)公式,對(duì)損傷巖體的彈性模量進(jìn)行初步判斷,確定其大致范圍。 (3)采用遺傳算法和神經(jīng)網(wǎng)絡(luò)以及利用均勻設(shè)計(jì)理論和遺傳神經(jīng)網(wǎng)絡(luò)相結(jié)合的反分析方法,結(jié)合損傷本構(gòu)模型RDM對(duì)巖體的彈性模量進(jìn)行精確反演,進(jìn)而獲得損傷巖體彈性模量的分布規(guī)律,劃定采場(chǎng)圍巖損傷區(qū),得到圍巖損傷等級(jí)劃分量化指標(biāo),并得出圍巖損傷隨時(shí)間分布演化規(guī)律。
[Abstract]:In recent years, many mines in China have changed from shallow mining to deep underground mining. With the increase of mining depth, the influence of high geostress on engineering is becoming more and more obvious. In particular, the mechanical behavior of mine stope during blasting and mining has a more prominent disturbance effect on rock mass. Under the environment of deep and high ground stress, the surrounding rock shows special nonlinear mechanical behavior, which makes the traditional rock. The theory and analytical method of mass (stone) mechanics are facing new challenges. During the adjustment of the secondary stress field, these micro-fractures gradually extend through and lead to the gradual decline of the integrity of the surrounding rock. Due to the appearance of the surface wall rock, the slab crack and collapse, and so on, are caused by a large number of micro-fractures in the surrounding rock surface of the cavern, and during the adjustment of the secondary stress field. It is difficult to measure the elastic modulus of the rock block in the surface damage area by drilling sampling in the field, so that the elastic modulus of the damaged rock mass can not be determined. The main research contents are as follows:. 1) based on the theory of damage mechanics and rock mechanics, the elastic modulus of damaged rock mass is studied by using the damage variable of rock, combined with the field drilling acoustic wave testing technique, Poisson's ratio, density of rock mass and wave velocity of rock mass, etc. Determine the damage variable. Taking the 27 stope of the middle section of -707 copper mine in Fushun Hongtoushan Copper Mine as the engineering research background, based on the research of the deep underground mining engineering of the existing metal mine, the field monitoring is carried out by various means, such as sound wave test, aerial camera and so on. Combined with the method of numerical simulation and empirical formula, the elastic modulus of damaged rock mass is preliminarily judged and its general range is determined. 3) using genetic algorithm and neural network, combining uniform design theory with genetic neural network, and combining with damage constitutive model RDM, the elastic modulus of rock mass is accurately inversed. Then the distribution law of elastic modulus of damaged rock mass is obtained, the damage zone of surrounding rock in stope is delineated, the quantitative index of damage grade of surrounding rock is obtained, and the law of damage distribution and evolution of surrounding rock with time is obtained.
【學(xué)位授予單位】：東北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TD313

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李月;劉立;李玉梅;張中興;梁偉;;地基層狀巖石縱波波速與密度相關(guān)性試驗(yàn)研究[J];四川建筑科學(xué)研究;2009年01期

2 葛修潤(rùn),王川嬰;數(shù)字式全景鉆孔攝像技術(shù)與數(shù)字鉆孔[J];地下空間;2001年04期

3 李曉紅,靳曉光,亢會(huì)明,盧義玉;隧道位移智能化反分析及其應(yīng)用[J];地下空間;2001年04期

4 高文學(xué),胡江碧,劉運(yùn)通,馮欆,孫國(guó)富;巖石動(dòng)態(tài)損傷特性的實(shí)驗(yàn)研究[J];北京工業(yè)大學(xué)學(xué)報(bào);2001年01期

5 張大林，張飛，劉占魁;爆破對(duì)巖體節(jié)理裂隙的影響[J];包頭鋼鐵學(xué)院學(xué)報(bào);1999年01期

6 崔新壯,李衛(wèi)民,段祝平,陳士海;爆炸應(yīng)力波在各向同性損傷巖石中的衰減規(guī)律研究[J];爆炸與沖擊;2001年01期

7 戴俊;錢七虎;;高地應(yīng)力條件下的巷道崩落爆破參數(shù)[J];爆炸與沖擊;2007年03期

8 柴滿洲,向緒金,張慶生,楊清榮;井下電視測(cè)井系統(tǒng)在套管檢測(cè)中的應(yīng)用[J];測(cè)井技術(shù);2002年03期

9 張?bào)?徐炳高;成像測(cè)井在川西碎屑巖解釋中的應(yīng)用[J];測(cè)井技術(shù);2005年02期

10 李端有,李迪,馬水山;三峽永久船閘開(kāi)挖邊坡巖體力學(xué)參數(shù)反分析[J];長(zhǎng)江科學(xué)院院報(bào);1998年02期

相關(guān)博士學(xué)位論文 前1條

1 李曉龍;基于支持向量機(jī)的巖體力學(xué)參數(shù)反演及工程應(yīng)用[D];鄭州大學(xué);2009年

，

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