【摘要】：階段空?qǐng)鏊煤蟪涮畈傻V法中充填體作為地下采礦工程的人工構(gòu)筑結(jié)構(gòu),是控制采場(chǎng)地壓的主要手段。階段空?qǐng)鏊煤蟪涮畈傻V法將礦塊回采工作劃分為一步礦房和二步礦柱回采,二步礦柱回采工程中一步采場(chǎng)充填體兩側(cè)為二步礦房,當(dāng)二步礦房開采時(shí),一步充填體便出現(xiàn)暴露于采空區(qū)的暴露面,隨著充填體暴露面積的改變,使得一步充填體的應(yīng)力場(chǎng)重新分布且使充填體易發(fā)生失穩(wěn)破壞,對(duì)二步回采工程安全作業(yè)環(huán)境產(chǎn)生影響,因此有必要對(duì)二步礦柱回采過程中充填體的受力情況及破壞機(jī)制進(jìn)行分析,同時(shí)為礦山回采方案進(jìn)行優(yōu)化設(shè)計(jì)。為此,本文針對(duì)遷西龍灣鐵礦-110m礦體根據(jù)其工程地質(zhì)條件及礦巖性質(zhì),采用階段空?qǐng)鏊煤蟪涮畈傻V法進(jìn)行礦體回采工作,并設(shè)計(jì)回采方案,進(jìn)行如下研究:基于損傷理論,結(jié)合階段空?qǐng)鏊煤蟪涮畈傻V工藝,建立二步礦柱回采過程中充填體受力模型,利用RFPA3D數(shù)值軟件分析礦柱回采過程中充填體內(nèi)部的受力狀態(tài)以及揭示充填體細(xì)觀破壞機(jī)制。以遷西龍灣鐵礦礦山地質(zhì)資料為背景,展開模擬相似材料的正交試驗(yàn),利用相似定律進(jìn)行以階段空?qǐng)鏊煤蟪涮畈傻V法為基礎(chǔ)的相似模擬試驗(yàn),分析礦柱回采過程中,充填體及其頂板發(fā)生應(yīng)變場(chǎng)演化規(guī)律,研究充填體承載機(jī)制�；邶垶宠F礦的尾礦不同的力學(xué)特性參數(shù),結(jié)合龍灣鐵礦工程地質(zhì)實(shí)際情況,利用有限元分析軟件FLAC3D結(jié)合對(duì)充填體的破壞機(jī)制分析結(jié)果對(duì)二步礦房回采方案進(jìn)行優(yōu)化,探討不同礦柱寬度條件下充填體的穩(wěn)定性,優(yōu)化礦柱結(jié)構(gòu)參數(shù)。
[Abstract]:As the artificial structure of underground mining engineering, the filling body in the subsequent filling mining method is the main means to control the pressure of the mining site. The mining work of the block is divided into one-step mine room and two-step pillar mining method, and the two-step mine room is on both sides of the one-step stope filling body in the two-step pillar mining project, and when the two-step mining room is exploited, the mining work of the block is divided into one-step mining room and two-step pillar mining method. The one-step filling body appears exposed to the goaf. With the change of the exposed area of the filling body, the stress field of the one-step filling body is redistributed and the filling body is prone to instability and failure. The safe working environment of the two-step mining project is affected, so it is necessary to analyze the force and failure mechanism of the filling body in the process of two-step pillar mining, and to optimize the design of the mine mining scheme at the same time. Therefore, according to its engineering geological conditions and ore and rock properties, this paper adopts the stage open field subsequent filling mining method to carry on the orebody mining work, and designs the mining scheme, and carries on the following research: based on the damage theory, Combined with the subsequent filling mining technology in the stage open field, the stress model of the filling body in the process of two-step pillar mining is established, and the internal stress state of the filling body in the process of pillar mining is analyzed by using RFPA3D numerical software, and the meso-failure mechanism of the filling body is revealed. Based on the geological data of Qianxilongwan Iron Mine, the orthogonal test of simulating similar materials is carried out, and the similar simulation test based on the subsequent filling mining method of stage open field is carried out by using similarity law, and the process of pillar mining is analyzed. The strain field evolution of the filling body and its roof is studied, and the bearing mechanism of the filling body is studied. Based on the different mechanical properties of the tailings of Longwan Iron Mine and the actual engineering geology of Longwan Iron Mine, the mining scheme of the second step mine is optimized by using the finite element analysis software FLAC3D combined with the analysis results of the failure mechanism of the filling body. The stability of filling body under different pillar width is discussed and the structural parameters of pillar are optimized.
【學(xué)位授予單位】：華北理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TD853.34;TD861.1

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 鄭明強(qiáng);付厚利;秦哲;馮佰研;;膠結(jié)充填體對(duì)二步礦體作用機(jī)理分析[J];金屬礦山;2016年10期

2 李志華;華心祝;李迎富;;不同頂?shù)装鍙?qiáng)度下深部沿空留巷圍巖變形特征[J];煤炭工程;2016年05期

3 郟威;何曉文;;羅河鐵礦二步采場(chǎng)結(jié)構(gòu)參數(shù)優(yōu)選[J];現(xiàn)代礦業(yè);2016年04期

4 盛佳;李向東;周益龍;印明昊;米繼武;;群空區(qū)下厚礦體二步驟采場(chǎng)回采順序優(yōu)化研究[J];礦業(yè)研究與開發(fā);2015年11期

5 劉志義;張麗春;趙國(guó)彥;任賀旭;盧宏建;;基于FLAC~(3D)的二步采場(chǎng)結(jié)構(gòu)參數(shù)優(yōu)化及工程應(yīng)用[J];金屬礦山;2015年10期

6 賈林剛;劉卓然;;充填開采充填率與地表移動(dòng)規(guī)律的數(shù)值模擬研究[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào)(自然科學(xué)版);2015年09期

7 廖偉成;劉波;張耀平;徐佑民;;充填體下水平礦柱回采方案研究[J];金屬礦山;2015年05期

8 謝生榮;張廣超;何尚森;孫運(yùn)江;李二鵬;楊綠剛;謝國(guó)強(qiáng);;深部大采高充填開采沿空留巷圍巖控制機(jī)理及應(yīng)用[J];煤炭學(xué)報(bào);2014年12期

9 李浩然;楊春和;劉玉剛;陳鋒;馬洪嶺;;單軸荷載作用下鹽巖聲波與聲發(fā)射特征試驗(yàn)研究[J];巖石力學(xué)與工程學(xué)報(bào);2014年10期

10 趙迎貴;游勛;岳國(guó)均;王春仁;劉祥鑫;;基于FLAC~(3D)的礦柱回收穩(wěn)定性分析[J];金屬礦山;2014年08期

相關(guān)碩士學(xué)位論文 前2條

1 王耀;傾斜中厚鐵礦體二步房開采嗣后充填合理段高與充填配比研究[D];青島理工大學(xué);2014年

2 周華林;空?qǐng)鏊煤蟪涮畈傻V法充填體合理強(qiáng)度分布規(guī)律研究[D];武漢理工大學(xué);2012年

，

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