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| 內容簡介： |
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本书以现场调研、理论分析、相似材料模拟、数值模拟为手段，研究煤层倾角及顶板完整性对沿空留巷适应性的影响，建立了沿空留巷适应性分级系统，介绍了特定地质条件下留巷围岩断裂破坏机理，建立了顶板控制力学模型，最后系统分析了回采巷道围岩破坏特征及控制机理。本书可供从事矿山及地下工程的科研和工程技术人员阅读，也可供高等院校采矿专业的师生参考。
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| 目錄：
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1Introduction1
1.1Classification of Mining Roadways1
1.2Application of GER5
Relief5
1.3Failure Modes of Roadways7
References8
2Overview of Engineering Geology11
2.1Overview11
2.2CoalBearing Strata11
2.3Distribution of GeologicalConditions15
2.4Chapter Summary20
References20
3Adaptation Assessment of GobSide EntryRetaining22
3.1Introduction22
3.2Determination of Impact Factors23
3.3Field Application Statistics26
3.4Indicator Weighting30
3.5Adaptive Grades and Their SupportMethods33
3.6Adaptability Evaluation Process37
3.7Chapter Summary41
References41
4Advancing Cutting Roof for RetainingGateway With Near Horizontal
and Close Coal Seam Groups44
4.1Introduction44
4.2Mechanism of the Cutting Roof for aRetaining Gateway45
4.3Equivalent Material SimulationExperiment46
4.4Result of the Experiment50
4.5Discussion59
4.6Chapter Summary60
References61
5Natural Filling and Systematic RoofControl Technology for
Retaining Gateway in Steep Coal Seams64
5.1Introduction64
5.2Investigation of Steep Coal Seams65
5.3Analysis of the Advantage of the Useof GER in Steep Coal
Seams66
5.4The Key Technology for GER71
5.5Gateway Driving and Its SupportTechnology77
5.6Chapter Summary81
References81
6Soft Roof Failure Mechanism andSupporting Method for Retaining
Gateway84
6.1Introduction84
6.2Description of Field Observation85
6.3Stress Evolution Law in Roof88
6.4Force States of Roof Rock Mass90
6.5Mechanism for Failure of Roof RockMass91
Roadway95
6.6Roof Support Countermeasures96
6.7Discussion102
6.8Chapter Summary103
References104
7The Failure Characteristics and theSupporting Technology for
PreRetaining Gateway106
7.1Introduction106
7.2Understanding of Surrounding RockFailure and Its Support107
7.3Investigation of Test Field111
7.4Test of Gateways Broken Width113
7.5CrossSection Diagram of ExcavationBroken Zone (EBZ)118
7.6Broken Width in Gateways withDifferent Excavation Method123
7.7Experimental Studies on the ImprovedMaterial Parameters
of Bolts125
7.8Support Effect Analyses of Bolt andSurround Rock131
7.9Supporting Technology137
7.10Chapter Summary138
References140
AttachmentEvaluation Results ofAdaptability of Gobside Entry
Retaining144
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