| 岩层明显运动时间效应分析 |
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| 引用本文： | 文志杰,夏洪春,董洪青.岩层明显运动时间效应分析[J].科技导报(北京),2011,29(18):42-45. |
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| 作者姓名： | 文志杰 夏洪春 董洪青 |
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| 作者单位： | 1. 山东科技大学;矿山灾害预防与控制重点实验室, 山东青岛 266510;2. 大连大学;辽宁省复杂结构体系灾害预测与防治重点实验室, 辽宁大连 116622;3. 级索煤矿, 山东滕州 277518 |
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| 基金项目： | 国家自然科学基金项目(50874021); 《科技导报》“博士生创新计划”项目(kjdb200902-13); 山东科技大学研究生科技创新基金项目(YCA100306) |
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| 摘 要： | 基于应用“以岩层运动和支承压力分布”为核心的矿山压力控制理论，建立了采场结构力学模型和留巷结构力学模型，阐述了垮落带厚度确定方法，推导了煤矸石压缩前后变形量求解公式，分析了采空区煤矸石压缩和留设巷道围岩变形压缩作用力的来源；利用自制的煤矸石压密试验设备和MTS 815.03电液伺服万能试验机对3种粒径等级（10—20mm、20—30mm、30—60mm）煤矸石的压缩特性进行了系统性研究，得到了煤矸石在不同单轴压缩条件下的碎胀特性、碎胀系数与应力关系曲线，以及压缩过程中的时间相关特性。研究结果表明，采空区煤矸石压缩作用力主要来源于采场裂断拱内岩层重量；煤矸石压缩至密实状态变形量大约为0.3mZ；煤矸石压缩曲线符合对数函数关系；试验结果与现场数据基本吻合。
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| 关 键 词： | 岩层 运动 煤矸石 压缩 时间效应 |
The Time Effect of Strata Obvious Movement |
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| WEN Zhijie,XIA Hongchun,DONG Hongqing . Key Laboratory of Mine Disaster Prevention , Control,Sh,ong University of Science , Technology,Qingdao ,Sh,ong Province,China . Key Laboratory of Liaoning Province for Prediction , Control of Complicated Structure System,Dalian University,Dalian ,Liaoning Province,China . Jisuo Coalmine,Tengzhou ,China.The Time Effect of Strata Obvious Movement[J].Science & Technology Review,2011,29(18):42-45. |
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| Authors: | WEN Zhijie XIA Hongchun DONG Hongqing Key Laboratory of Mine Disaster Prevention Control Sh ong University of Science Technology Qingdao Sh ong Province China Key Laboratory of Liaoning Province for Prediction Control of Complicated Structure System Dalian University Dalian Liaoning Province China Jisuo Coalmine Tengzhou China |
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| Institution: | 1. Key Laboratory of Mine Disaster Prevention and Control; Shandong University of Science and Technology, Qingdao 266510, Shandong Province, China;2. Key Laboratory of Liaoning Province for Prediction and Control of Complicated Structure System; Dalian University, Dalian 116622, Liaoning Province, China;3. Jisuo Coalmine, Tengzhou 277518, Shandong Province, China |
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| Abstract: | Based on the ground pressure and strata control theory with the strata movement and abutment pressure as the core, the stope structural mechanical model and the gob-side retaining entry mechanical model are built, the caving zone height is determined, the non-compressed and compressed gangue deformation calculation formula is obtained, the compression effect of coal gangue in the mined-out area is explained and the gob-side retaining entry surrounding deformation is analyzed. For the coal gangue with three ... |
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| Keywords: | strata movement coal gangue compression time effect |
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