【正文】 ressure and initial transfalling length is greater than shollow mining, and divided side direction into four regions according to roof structure and roof supporting structure in working face.According to bolting theory, similar simulation, numerical simulation and real geology in pit of Pingdingshan, optimized the width of pillow as driving roadway along goaf and parameter of bolting,abtained the width is ～4m is suitable.In order to check the efferect to bolting after optimizing,laying observation station in J1511150 gateway to observe delamination and displacement of roof to floor and two ribs,and obtain that the delamination and displacement is little,and stabilizing after sevenal days,this indicae optization have evident result.According to the main risk is gas and water to hold small pillar while driving roadway along goaf,carry out drifting gas, down diagonal slice layout and water prospection and dewatering techonology,and it have evident result.Key words：deep；mining gateway；abutment pressure；Optimizing of Bolt SupportV / 87目 錄摘要 ...................................................................................................................................IABSTRACT...................................................................................................................III1 緒論 ................................................................................................................................1 研究的背景和意義 ....................................................................................................1 國內(nèi)外研究現(xiàn)狀 .........................................................................................................1 深部工程的發(fā)展趨勢 .................................................................................................................1 沿空掘巷上覆巖層活動規(guī)律的研究綜述 ..................................................................................2 沿空掘巷護巷煤柱的研究綜述 ..................................................................................................3 錨桿支護原理及技術(shù)的研究綜述 ..............................................................................................4 本文研究的內(nèi)容及技術(shù)研究路線 .............................................................................5 研究內(nèi)容 ......................................................................................................................................5 研究方法及技術(shù)路線 .................................................................................................................62 不同傾角條件下支承壓力分布規(guī)律的數(shù)值模擬研究 ...............................................7 概述 .............................................................................................................................7 FLAC3D 軟件簡介 .......................................................................................................7 模型的建立及參數(shù)的選取 ........................................................................................8 模型的建立 ..................................................................................................................................8 模擬地質(zhì)條件、煤巖參數(shù)及單元劃分 ......................................................................................9 計算的結(jié)果及分析 ..................................................................................................11 不同傾角側(cè)向支承壓力的模擬結(jié)果 .......................................................................................11 側(cè)支承壓力分布特征數(shù)據(jù)處理 ................................................................................................15 小結(jié) ...........................................................................................................................173 煤層開采相似模擬研究 ..............................................................................................19 概述 ...........................................................................................................................19 相似模擬實驗理論 ..................................................................................................19 相似定理 ...................................................................................................................................19 相似準則 ...................................................................................................................................20 相似材料模擬實驗設(shè)計 ..........................................................................................21 實驗?zāi)康?...................................................................................................................................21 模擬實驗的相似條件 ...............................................................................................................21 相似材料的選取 .......................................................................................................................21 模擬的地質(zhì)條件 .......................................................................................................................21 模型架及相似系數(shù)的確定 .......................................................................................................21 相似材料配比及用量 ...............................................................................................................23 模型的制作 ...............................................................................................................................25 加載 ...........................................................................................................................................25 模型的開采與觀測 ..................................................................................................27 實驗結(jié)果及分析 ......................................................................................................29 己 15 煤層開采側(cè)向支承壓力分布 ...........................................................................................29 己 15 煤層開采巖層幾何特征 ...................................................................................................29 小結(jié) .......................................................