【正文】 .......................... 26 數(shù)值模擬確定窄煤柱寬度 ................................................................................... 27 本章小結(jié) ............................................................................................................... 37 4 7435 材料道圍巖控制技術(shù) ..................................................................................... 39 支護(hù)原則 ............................................................................................................... 39 巷道層位選擇 ....................................................................................................... 40 巷道斷面形狀 ....................................................................................................... 41 巷道支護(hù)參數(shù) ....................................................................................................... 42 本章小結(jié) ............................................................................................................... 47 5 工業(yè)性試驗(yàn) .............................................................................................................. 48 IV 地質(zhì)情況 ............................................................................................................... 48 上區(qū)段采空區(qū)積水的影響 .................................................................................... 49 礦壓顯現(xiàn)規(guī)律 ....................................................................................................... 50 不足與改進(jìn) ........................................................................................................... 52 本章小節(jié) ............................................................................................................... 53 6 主要結(jié)論 .................................................................................................................. 54 參考文獻(xiàn) ...................................................................................................................... 55 作者簡歷 ...................................................................................................................... 59 學(xué)位論文原創(chuàng)性聲明 ................................................................................................. 60 學(xué)位論文數(shù)據(jù)集 .......................................................................................................... 61 V Contents Abstract ........................................................................................................................ II Contents ....................................................................................................................... V List of figures ............................................................................................................ VII List of tables................................................................................................................. X Table of Variables ....................................................................................................... XI 1 Introduction ............................................................................................................... 1 Research Significance .............................................................................................. 1 Research Status ........................................................................................................ 2 Main Problems ....................................................................................................... 10 Research Content ................................................................................................... 10 Research Routine ................................................................................................... 11 2 Analysis of Structure and Mechanical state of Roof in 7435 GobSide Driving Entry............................................................................................................................ 12 Mining Technological Condition of 7435 Face ..................................................... 12 Arc Triangular Plate on GobSide Driving Entry................................................... 13 Arc Triangular Plate Analysis of 7435 GobSide Driving Entry ........................... 19 Summary ................................................................................................................ 21 3 Optimal Width of Narrow Coal Pillar in 7435 GobSide Driving Entry ........... 22 Narrow Coal Pillar Geometry ................................................................................ 22 Mechanical Analysis of Narrow Coal Pillar .......................................................... 23 Deformation Principle of Narrow Pillar................................................................. 25 Theoretical Width Of Narrow Pillar....................................................................... 26 Numerical Stimulation For Optical Width of Narrow Pillar .................................. 27 Summary ................................................................................................................ 37 4 Control Technology of Surrounding Rock in 7435 Gobside Driving Entry ..... 39 Support Principal.................................................................................................... 39 Choices for Roadway Site ...................................................................................... 40 Roadway Sectional Geometry................................................................................ 41 Roadway Support Design Parameter ..................................................................... 42 VI Summary ................................................................................................................ 47 5 Industrial Scale Test ................................................................................................ 48 Geological Condition ..................................