本文選題：傾斜煤層 + 剛?cè)崆逗襄^注支護(hù)　； 參考：《太原理工大學(xué)》2015年碩士論文

【摘要】：隨著采礦技術(shù)的提高和煤炭機(jī)械的快速發(fā)展，煤炭開采的強(qiáng)度越來越大，使得賦存條件較好的煤炭儲(chǔ)量逐漸減少，煤炭企業(yè)對(duì)于煤炭的開采逐漸轉(zhuǎn)向急傾斜煤層和深部地質(zhì)條件較為復(fù)雜的煤層。我國大傾角煤層的煤炭儲(chǔ)量約占全國煤炭儲(chǔ)量的15%~20%，儲(chǔ)量豐富，并且煤質(zhì)較好，具有很高的開采價(jià)值。本文結(jié)合長溝峪煤礦-410m水平石門掘進(jìn)穿過傾斜煤層的工程實(shí)例，通過理論研究、相似模擬、數(shù)值模擬、工程監(jiān)測等方法進(jìn)行了以下主要研究： （1）通過理論研究得出大傾角煤層巷道變形破壞的影響因素：大傾角煤層巷道由于其圍巖結(jié)構(gòu)與巖性的非對(duì)稱性，巷道圍巖層理、節(jié)理和裂隙發(fā)育快，層間粘結(jié)力弱甚至無粘結(jié)力，導(dǎo)致巷道的非對(duì)稱變形破壞，致碎脹壓力大，且易發(fā)生煤炮。錨桿所支護(hù)方案難以滿足支護(hù)要求，因此在注漿機(jī)理的基礎(chǔ)上提出剛?cè)崆逗襄^注支護(hù)方案。 （2）對(duì)取自長溝峪煤礦-410m水平煤樣進(jìn)行注漿模擬試驗(yàn)和強(qiáng)度試驗(yàn)，確定剛性注漿漿液配合比和注漿參數(shù)，對(duì)煤樣水泥試塊注漿前后的抗壓強(qiáng)度對(duì)比分析。 （3）采用FLAC3D軟件對(duì)不同支護(hù)方式下的巷道進(jìn)行數(shù)值模擬，對(duì)錨網(wǎng)噴支護(hù)和剛?cè)崆逗襄^注支護(hù)兩種條件下屈服破壞范圍、垂直應(yīng)力分布、水平應(yīng)力分布、垂直位移分布、水平位移分布等進(jìn)行模擬分析。 （4）本文成果應(yīng)用于長溝峪煤礦-410m水平石門，經(jīng)對(duì)巷道收斂情況等監(jiān)測分析，，驗(yàn)證了剛?cè)崆逗襄^注支護(hù)結(jié)構(gòu)保證了急傾斜煤層巷道的穩(wěn)定性，滿足了巷道安全生產(chǎn)的要求，為水平巖巷穿越傾斜煤層巷道的安全生產(chǎn)起到了借鑒作用。
[Abstract]:With the improvement of mining technology and the rapid development of coal machinery, the intensity of coal mining is increasing, which makes the coal reserves with better conditions gradually decrease.The mining of coal in coal enterprises has gradually turned to steep inclined coal seam and coal seam with complex geological conditions.The coal reserves of large inclined coal seams in China account for 15% 20% of the national coal reserves, which are rich in reserves and of good coal quality, so they are of high mining value.Combined with the engineering example of -410m horizontal Shimen driving through inclined coal seam in Changgouyu Coal Mine, the following main research methods are carried out through theoretical research, similarity simulation, numerical simulation, engineering monitoring and so on.1) through the theoretical research, the influence factors of roadway deformation and failure in large inclined coal seam are obtained: because of the asymmetry of surrounding rock structure and lithology, the bedding, joint and crack development of roadway surrounding rock is fast.The interlayer adhesion is weak or even no adhesion, which leads to asymmetric deformation and destruction of roadway, resulting in large breaking and expanding pressure, and coal cannon is easy to occur.The bolting scheme is difficult to meet the requirement of support, so a rigid flexible chimeric bolting support scheme is put forward on the basis of grouting mechanism.(2) the grouting simulation test and strength test were carried out on the coal samples taken from Changgouyu coal mine at -410m level, and the mixture ratio and grouting parameters of rigid grouting were determined, and the compressive strength of the coal sample cement test blocks before and after grouting were compared and analyzed.(3) numerical simulation of roadway under different supporting modes is carried out by using FLAC3D software. The yield failure range, vertical stress distribution, horizontal stress distribution and vertical displacement distribution of bolt-mesh shotcreting support and rigid flexible interlocking bolt-grouting support are studied.The horizontal displacement distribution is simulated and analyzed.This paper is applied to Changgouyu coal mine -410m horizontal Shimen. By monitoring and analyzing the convergence of roadway, it is proved that the rigid and flexible chimeric bolt-grouting support structure ensures the stability of steep seam roadway and meets the requirement of roadway safety production.It can be used as a reference for the safety production of horizontal rock roadway through inclined coal seam roadway.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD353

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 金立平，鮮學(xué)福;急傾斜煤層巷道圍巖應(yīng)力應(yīng)變及破壞區(qū)探討[J];煤炭工程師;1995年01期

2 郭國珍，呂家立，陳鋒，季強(qiáng);急傾斜松軟圍巖回采巷道礦壓顯現(xiàn)及其支護(hù)[J];煤炭工程師;1995年05期

3 伍永平,柴敬;回采巷道內(nèi)巖體結(jié)構(gòu)與支護(hù)體相互作用分析[J];阜新礦業(yè)學(xué)院學(xué)報(bào)(自然科學(xué)版);1997年01期

4 翟配松;自進(jìn)式注漿鉆進(jìn)錨桿在邊坡支護(hù)中的應(yīng)用[J];廣西水利水電;2003年03期

5 石平五;急斜煤層老頂破斷運(yùn)動(dòng)的復(fù)雜性[J];礦山壓力與頂板管理;1999年Z1期

6 張芳,賈曉波,李忠華,潘一山,王洪英;急傾斜煤層底板巷道破壞因素探討[J];礦山壓力與頂板管理;2003年01期

7 黃慶享,李冬,劉騰飛,陳國紅,董伯林,陳明武,胡耀,項(xiàng)乾華,唐志明;急傾斜臨界角煤層沿空留巷礦壓規(guī)律與支護(hù)對(duì)策[J];礦山壓力與頂板管理;2004年04期

8 查文華;謝廣祥;羅勇;;急傾斜煤層錨網(wǎng)索巷道圍巖活動(dòng)規(guī)律研究[J];采礦與安全工程學(xué)報(bào);2006年01期

9 董宗斌;;聯(lián)合支護(hù)及注漿固化在孤島工作面窄煤柱的運(yùn)用[J];煤;2007年07期

10 黃建光;急傾斜煤層沿煤大巷錨桿支護(hù)探討[J];煤;1996年04期

相關(guān)博士學(xué)位論文 前1條

1 蘇培莉;裂隙煤巖體注漿加固滲流機(jī)理及其應(yīng)用研究[D];西安科技大學(xué);2010年

本文編號(hào)：1762921