本文選題：傾斜煤層 + 剛柔嵌合錨注支護　； 參考：《太原理工大學》2015年碩士論文

【摘要】：隨著采礦技術的提高和煤炭機械的快速發(fā)展，煤炭開采的強度越來越大，使得賦存條件較好的煤炭儲量逐漸減少，煤炭企業(yè)對于煤炭的開采逐漸轉向急傾斜煤層和深部地質條件較為復雜的煤層。我國大傾角煤層的煤炭儲量約占全國煤炭儲量的15%~20%，儲量豐富，并且煤質較好，具有很高的開采價值。本文結合長溝峪煤礦-410m水平石門掘進穿過傾斜煤層的工程實例，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構與巖性的非對稱性，巷道圍巖層理、節(jié)理和裂隙發(fā)育快，層間粘結力弱甚至無粘結力，導致巷道的非對稱變形破壞，致碎脹壓力大，且易發(fā)生煤炮。錨桿所支護方案難以滿足支護要求，因此在注漿機理的基礎上提出剛柔嵌合錨注支護方案。 （2）對取自長溝峪煤礦-410m水平煤樣進行注漿模擬試驗和強度試驗，確定剛性注漿漿液配合比和注漿參數(shù)，對煤樣水泥試塊注漿前后的抗壓強度對比分析。 （3）采用FLAC3D軟件對不同支護方式下的巷道進行數(shù)值模擬，對錨網噴支護和剛柔嵌合錨注支護兩種條件下屈服破壞范圍、垂直應力分布、水平應力分布、垂直位移分布、水平位移分布等進行模擬分析。 （4）本文成果應用于長溝峪煤礦-410m水平石門，經對巷道收斂情況等監(jiān)測分析，，驗證了剛柔嵌合錨注支護結構保證了急傾斜煤層巷道的穩(wěn)定性，滿足了巷道安全生產的要求，為水平巖巷穿越傾斜煤層巷道的安全生產起到了借鑒作用。
[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.
【學位授予單位】：太原理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD353

【參考文獻】

相關期刊論文 前10條

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

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

3 伍永平,柴敬;回采巷道內巖體結構與支護體相互作用分析[J];阜新礦業(yè)學院學報(自然科學版);1997年01期

4 翟配松;自進式注漿鉆進錨桿在邊坡支護中的應用[J];廣西水利水電;2003年03期

5 石平五;急斜煤層老頂破斷運動的復雜性[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)律與支護對策[J];礦山壓力與頂板管理;2004年04期

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

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

10 黃建光;急傾斜煤層沿煤大巷錨桿支護探討[J];煤;1996年04期

相關博士學位論文 前1條

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

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