深部软岩巷道围岩变形规律及稳定性控制技术
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摘要
以某矿IV621风巷为研究对象,采用现场调研、数值模拟和工程实践相结合的研究手段,对深部软岩巷道的变形机理及控制方案进行了分析,确定了该风巷的最佳支护方案,并应用于现场。结果揭示了破碎软岩巷道掘进期间巷道表面及巷道深部围岩移近量的时间效应;分析了锚杆支护、锚索支护和联合支护在控制围岩变形量的情况;现场实践中,巷道顶底板移近量缩小至95 mm以内,两帮移近量缩小至100 mm,符合煤矿安全生产的需要。
Taking IV621 airway as the research object, we researched deformation laws of surrounding rock and stability control of deep soft rock roadway and applied to the field by combining methods of site investigation, numerical simulation, and engineering practice. The results show the time effect of the surrounding rock displacement of roadway surface and deep roadway during excavating tunnel, analyze deformation of the surrounding rock controlled by the anchor support, anchor cable support and joint support. The deformation of roof and floor of roadway within 95 mm and deformation amount of two walls within 100 mm in filed practice can meet the requirements of coal mine safety production.
Taking IV621 airway as the research object, we researched deformation laws of surrounding rock and stability control of deep soft rock roadway and applied to the field by combining methods of site investigation, numerical simulation, and engineering practice. The results show the time effect of the surrounding rock displacement of roadway surface and deep roadway during excavating tunnel, analyze deformation of the surrounding rock controlled by the anchor support, anchor cable support and joint support. The deformation of roof and floor of roadway within 95 mm and deformation amount of two walls within 100 mm in filed practice can meet the requirements of coal mine safety production.
引文
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[2]齐敏江.浅谈煤炭企业人力资源成本的管理和控制[J].煤炭经济研究,2009,39(7):88-89.
[3]何满潮.工程地质力学的挑战与未来[J].工程地质学报,2014,22(4):543-556.
[4]Wei Sun,Xiaobang Wang,Lintao Wang,et al.Multidisciplinary design optimization of tunnel boring machine considering both structure and control parameters under complex geological conditions[J].Structural and Multidisciplinary Optimization,2016,54(4):1073.
[5]康钦容.缓斜煤层群采动影响下底板软岩巷道围岩稳定性控制[D].重庆:重庆大学,2011.
[6]Bangyou Jiang,Lianguo Wang,Yinlong Lu,et al.Failure Mechanism Analysis and Support Design for Deep Composite Soft Rock Roadway:A Case Study of the Yangcheng Coal Mine in China[J].Shock and Vibration,2015(3):1-14.
[7]孔德玺.深埋矿井全煤巷道围岩变形破坏特征与稳定性控制[D].太原:太原理工大学,2015.