采空区覆岩冒裂带发育高度预测综述
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摘要
为较全面了解煤层开采后的覆岩破坏机理及其预测方法,对岩体的力学运动特征,经验公式的应用,模拟方法的特点等方面进行了总结分析,认为煤矿所在区的构造环境对采煤沉陷机理和特征起到控制作用;经验公式在预测新型采煤方法条件下的采煤沉陷时,精确性较之条采或普采为差,与实际观测偏差也较大;数值模拟方法是物理模拟方法的重要补充,但需要对其结果的可靠性进行必要的判定。
In order to comprehensively understanding the mechanic of overburden rock failure and the prediction of its height after the coal-seam being mined, the mechanical feature, application of empirical formula, and characteristics of simulation methods were summarized and analyzed, the results show that, tectonic setting would control the mining subsidence mechanic and feature to some extent, the empirical formulas prediction accuracy would be better when they were used in strip extraction or common mechanized extraction than other mining methods, the numerical simulation was an important supplement for the physical simulation method, but its results must be judged properly before used.
In order to comprehensively understanding the mechanic of overburden rock failure and the prediction of its height after the coal-seam being mined, the mechanical feature, application of empirical formula, and characteristics of simulation methods were summarized and analyzed, the results show that, tectonic setting would control the mining subsidence mechanic and feature to some extent, the empirical formulas prediction accuracy would be better when they were used in strip extraction or common mechanized extraction than other mining methods, the numerical simulation was an important supplement for the physical simulation method, but its results must be judged properly before used.
引文
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[2]夏玉成,石平五.关于环境变迁和矿业工程环境效应的讨论[J].中国矿业,2002,11(1):63-66.
[3]夏玉成.构造环境对煤矿区采动损害的控制机理研究[D].西安,西安科技大学,2003.
[4]钱鸣高.岩层控制的关键层理论[M].徐州:中国矿业大学出版社,2003:63-68.
[5]许家林,王晓振,刘文涛,等.覆岩主关键层位置对导水裂隙带高度的影响[J].岩石力学与工程学报,2009,28(2):380-385.
[6]王连富,李卫东,刘道文,等.综放采场覆岩破坏高度的实测方法及应用[J].矿业安全与环保,2005,32(3):70-71.
[7]王桦,程桦,刘盛东.基于并行电阻率法的导水裂隙带适时探测技术研究[J].煤矿安全,2007,(7):1-6.
[8]王双美.导水裂隙带高度研究方法概述[J].水文地质工程地质,2006,(5):126-128.
[9]汪华君,姜福兴,成云海,等.覆岩导水裂隙带高度的微地震(MS)监测研究[J].煤炭工程,2006,(3):74-76.
[10]陈陆望,桂和荣,李一帆.UDEC模拟厚松散层及超薄覆岩条件下开采防水煤柱覆岩突水可能性[J].水文地质工程地质,2007,(1):53-61.
[11]黄志安,童海方,张英华,等.采空区上覆岩层“三带”的界定准则和仿真确定[J].北京科技大学学报,2006,28(7):609-612.
[12]张帆,贺振华,黄德济,等.预测裂隙发育带的构造应力场数值模拟技术[J].石油地球物理勘探,2000,35(2):154-163.
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