發(fā)布時(shí)間：2018-03-12 12:44

  本文選題：上行卸壓開采　切入點(diǎn)：厚硬巖組　出處：《安徽理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：卸壓開采己成為高瓦斯突出煤層群安全開采和瓦斯抽采有效方法之一,可分為上行卸壓開采和下行卸壓開采兩種。在上行卸壓開采過程中,覆巖卸壓區(qū)域及瓦斯抽采的范圍與頂板巖層的冒落、層間巖石物理特性、工作面長(zhǎng)度、開采層厚度和瓦斯壓力及含量等因素密切相關(guān)。本文主要研究了層間存在數(shù)量不等的厚硬巖層時(shí)上行卸壓開采過程中覆巖破斷演化過程以及卸壓特征。 根據(jù)A3煤和B4煤的煤層賦存特征、物理力學(xué)特征和采礦技術(shù)特點(diǎn),本文采用現(xiàn)場(chǎng)試驗(yàn)、數(shù)值模擬分析、相似材料模擬試驗(yàn)分析、和理論分析相結(jié)合的研究方法,對(duì)上行卸壓開采過程中厚硬巖組破斷演化過程及其對(duì)B4煤的卸壓作用進(jìn)行了研究。 通過現(xiàn)場(chǎng)取芯和實(shí)驗(yàn)室試驗(yàn)獲得A3煤工作面上覆煤巖層賦存特征及物理力學(xué)特性,并分析計(jì)算確定了A3煤上行開采的可行性。構(gòu)建了不同巖層組合條件下開采A3煤卸壓保護(hù)B4煤的UDEC2D數(shù)值模擬模型和實(shí)驗(yàn)室相似材料模擬試驗(yàn)?zāi)Ｐ?獲得了上行卸壓開采過程中厚硬巖層破斷特征及其對(duì)覆巖應(yīng)力、位移、裂隙演化特征的影響規(guī)律。 基于試驗(yàn)數(shù)據(jù)分析,得到層間厚硬巖組在上行卸壓開采過程中的破斷演化過程及其對(duì)上行卸壓開采效果的影響。
[Abstract]:Pressure relief mining has become one of the effective methods for safe mining and gas drainage mining of high gas outburst coal seams, which can be divided into two kinds: uplink pressure relief mining and downgoing pressure relief mining. The area of overburden pressure relief, the scope of gas drainage, the caving of roof rock, the physical characteristics of interlayer rock, the length of working face, The thickness of mining strata is closely related to the gas pressure and content. This paper mainly studies the overburden fracture evolution process and pressure relief characteristics in the process of upward pressure relief mining when there are different amount of thick hard strata between layers. According to the characteristics of coal seam occurrence, physical mechanics and mining technology of A _ 3 and B _ 4 coal, this paper adopts the research methods of field test, numerical simulation analysis, similar material simulation test analysis, and theoretical analysis. The fracture evolution process of thick hard rock formation and its pressure relief to B _ 4 coal during upward pressure relief mining are studied. The occurrence characteristics and physical and mechanical properties of overlying strata on A3 coal face are obtained by field core-taking and laboratory tests. The feasibility of upward mining of A3 coal is determined by analysis and calculation. The UDEC2D numerical simulation model of mining A3 coal under different rock combination conditions and the simulation test model of similar materials in laboratory are constructed. The fracture characteristics of thick hard rock and its influence on overburden stress, displacement and fracture evolution are obtained. Based on the analysis of test data, the fracture evolution process and its influence on the effect of upward pressure relief mining of the interlayer thick hard rock group in the process of upward pressure relief mining are obtained.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD325

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 薛俊華;余國(guó)鋒;;遠(yuǎn)距離卸壓開采關(guān)鍵層位置效應(yīng)初探[J];安徽建筑工業(yè)學(xué)院學(xué)報(bào)(自然科學(xué)版);2008年03期

2 楊科;謝廣祥;;綜放開采采動(dòng)裂隙分布及其演化特征分析[J];礦業(yè)安全與環(huán)保;2009年04期

3 姜德義,蔣再文,劉新榮,任松,劉金平;覆巖離層注漿控制沉降技術(shù)及計(jì)算模型[J];重慶大學(xué)學(xué)報(bào)(自然科學(xué)版);2000年03期

4 劉文生,范學(xué)理,趙德深;覆巖離層充填技術(shù)的理論基礎(chǔ)與工程實(shí)施[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào)(自然科學(xué)版);2001年02期

5 劉彥偉;李國(guó)富;;下保護(hù)層開采上覆煤巖體采動(dòng)效應(yīng)及卸壓范圍擴(kuò)界研究[J];礦業(yè)安全與環(huán)保;2013年03期

6 高保彬;李回貴;王曉蕾;;下保護(hù)層開采保護(hù)效果與瓦斯運(yùn)移規(guī)律[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào)(自然科學(xué)版);2013年10期

7 梁冰;石占山;孫維吉;金佳旭;;構(gòu)造應(yīng)力作用下覆巖卸壓演化規(guī)律試驗(yàn)研究[J];安全與環(huán)境學(xué)報(bào);2014年01期

8 李樹剛;索亮;林海飛;趙鵬翔;王翠霞;魏宗勇;;不同間距上保護(hù)層開采卸壓效應(yīng)UDEC數(shù)值模擬[J];遼寧工程技術(shù)大學(xué)學(xué)報(bào)(自然科學(xué)版);2014年03期

9 黃樂亭;采場(chǎng)覆巖兩帶高度與覆巖硬度的函數(shù)關(guān)系[J];礦山測(cè)量;1999年01期

10 繆協(xié)興,茅獻(xiàn)彪,錢鳴高;采動(dòng)覆巖中關(guān)鍵層的復(fù)合效應(yīng)分析[J];礦山壓力與頂板管理;1999年Z1期

，

本文編號(hào)：1601623