近风氧化带开采导水裂隙发育规律及机制分析

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (659 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为寻求提高开采上限导高发育规律，以40例“两带”探测钻孔实测数据为依据，应用回归分析方法对3种水体采动等级下不同覆岩类型的导水裂隙高度进行非线性统计研究，并首次建立3类水体下的预留防水煤岩柱与裂采比间的BoxLucas1模型曲线。研究发现：提高开采上限时，BoxLuca1曲线预测导水高度的误差值远小于常规“三下”规程经验公式误差，表明该模型的合理性；3类水体的曲线斜率逐渐增大，顺序为II，III类＞I类，表明II，III类裂采比下降更快，导高发育受到风氧化带的抑制作用更加明显。而且I，II类水体下的导水裂隙顶界面未达到泥化层的底界面，III类水体下的裂隙未达到或未穿透风氧化带。说明在一定范围内提高开采上限是可行的。在此基础上，一方面利用Paris位移公式和Crouch不连续位移公式，提出风氧化带拉张型裂隙面的位移公式，计算结果表明，该带裂隙受上覆自重应力影响更容易因发生变形位移和刚度位移而产生弥合效应。另一方面，风氧化带特有的塑性大变形使得外力对该带所做的功大部分被其消耗掉，因而更容易损耗劈裂能量，从而抑制导水裂隙的继续向上发育。这可为该带下合理留设防水煤岩柱提高煤层开采上限提供理论依据。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：采矿工程, 近风氧化带, 导水裂隙带高度, 裂采比, 发育机制

Abstract：Nonlinear statistical analysis of heights of zones with water transmitting fractures at three different grades of underwater mining beneath various roof rocks was conducted with the regression method and the measured data of 40 drillings. A BoxLucas1 curve between the ratio of heights of fractured to mining zones and the height of waterproof coal pillar was established，which produced smaller errors than the conventional empirical formula did. The slopes of curves for 3 types of water gradually increased and the values of types II and III were greater than that of type I，which indicated that the height of water transmitted fractured zone under water mining type I was more easily reduced by the inhibition effect of weathered and oxidized zone. The fracture of type III did not penetrate the weathered and oxidized zone as mining closing to this area and the top interfaces of water transmitted fractures of types I and II did not reach the bottom of the mud layer，which indicated that raising the upper limit of mining within a certain range was feasible. A displacement formula for tensile fracture surfaces of weathered and oxidized zone was proposed utilizing Paris?s formula of displacement and Crouch?s formula of discontinuous displacement. The calculated results show that the fractures are more easily closed due to the overlying gravity. The large plastic deformation of weathered and oxidized zone consumes the work by external forces and consumes splitting energy easily，which prevents water transmitted fractures from upward development.

Key words： mining engineering approaching to weathered and oxidized zone height of water transmitting zone ratio of the height of the fractured zone to the mining height developing mechanism

收稿日期: 2013-05-31

引用本文:

柴辉婵，李文平. 近风氧化带开采导水裂隙发育规律及机制分析[J]. 岩石力学与工程学报, 2014, 33(7): 1319-1328.
CHAI Huichan，LI Wenping. ANALYSIS OF DEVELOPING MECHANISM OF WATER TRANSMITTING FRACTURED ZONE MINING APPROACHING TO WEATHERED AND OXIDIZED ZONE. , 2014, 33(7): 1319-1328.

链接本文:

http://www.rockmech.org/CN/Y2014/V33/I7/1319

[4]	刘天泉. 矿山岩体采动影响与控制工程学及其应用[J]. 煤炭学报，1995，20(1)：1-5.(LIU Tianquan. Influence of mining activities on mine rock mass and control engineering[J]. Journal of China Coal Society，1995，20(1)：1-5.(in Chinese))
[9]	杨本水，孔一凡，余庆业. 风氧化带内煤层安全开采的试验研究[J]. 中国矿业大学学报，2004，33(1)：51-54.(YANG Benshui，KONG Yifan，YU Qingye. Testing research of coal layer safe extraction in efflorescent oxygenized belts[J]. Journal of China University of Mining and Technology，2004，33(1)：51-54.(in Chinese))
[12]	张文艺，汪文革，彭卫东，等. 潘谢矿区缩小防水煤柱开采实践[J]. 煤炭学报，2002，27(2)：128-132.(ZHANG Wenyi，WANG Wenge，PENG Weidong，et al. The coal mining practice of reducing waterproof coal pillars in Panxie mining area[J]. Journal of China Coal Society，2002，27(2)：128-132.(in Chinese))
[13]	李世愚，和泰名，尹祥础，等. 岩石断裂力学导论[M]. 合肥：中国科学技术大学出版社，2010：145-146.(LI Shiyu，HE Taiming，YIN Xiangchu，et al. Introduction of rock fracture mechanics[M]. Hefei：China University of Science and Technology Press，2010：145-146.(in Chinese)) " target="_blank">
[3]	刘学增. 新生代松散层下缩小防水岩柱留设防砂煤柱开采实践[J]. 煤炭技术，2002，21(9)：27-28.(LIU Xuezeng. Mining practice of shrinking water-prevention rock pillar and leaving sand-prevention pillar under the loose layer of Cenozoic Era(Kz)[J]. Coal Technology，2002，21(9)：27-28.(in Chinese))
[11]	宣以琼，杨永林. 厚松散层下风氧化带内煤层安全开采关键技术的研究[J]. 中国煤田地质，2003，15(4)：34-39.(XUAN Yiqiong，YANG Yonglin. Research on safely mining key technology of coalbed in zone of weathering and oxidation under thick loose bed[J]. Coal Geology of China，2003，15(4)：34-39.(in Chinese))
[21]	郭宏云，陈新，刘天宇. 两种有限变形力学理论的分析[J]. 黑龙江科技学院学报，2009，19(3)：199.(GUO Hongyun，CHEN Xin，LIU Tianyu. Analysis of two different definite deformation theorems[J]. Journal of Heilongjiang Institute of Science and Technology，2009，19(3)：199.(in Chinese))
[19]	黄庆享. 浅埋煤层覆岩隔水性与保水开采分类[J]. 岩石力学与工程学报，2010，29(2)：3 623-3 627.(HUANG Qingxiang. Impermeability of overburden rock in shallow buried coal seam and classification of water conservation mining[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(2)：3 623-3 627.(in Chinese))
[1]	刘天泉. 厚松散含水层下近松散层的安全开采[J]. 煤炭科学技术，1986，(2)：14-18.(LIU Tianquan. Safe extraction of near soft layer underlying a thick and soft water beating layer[J]. Coal Science and Technology，1986，(2)：14-18.(in Chinese))
[2]	桂和荣，孙家斌，李明好，等. 厚松散层及超薄覆岩条件下放顶煤开采防砂煤柱[J]. 煤田地质与勘探，2002，32(2)：36-39.(GUI Herong，SUN Jiabin，LI Minghao，et al. Study of mining the safety pillar against sand by caving method under conditions of thick gravelly ground and super thin capping rock[J]. Coal Geology and Exploration，2002，32(2)：36-39.(in Chinese))
[5]	高延法. 岩移“四带”模型与动态位移反分析[J]. 煤炭学报，1996，21(1)：51-56.(GAO Yanfa. Four zone model of rock mass movement and back analysis of dynamic displacement[J]. Journal of China Coal Society，1996，21(1)：51-56.(in Chinese)) " target="_blank">
[6]	钱鸣高，缪协兴，许家林. 岩层控制中的关键层理论研究[J]. 煤炭学报，1996，21(3)：226-230.(QIAN Minggao，MIU Xiexing，XU Jialin. Theoretical study of key stratum in ground control[J]. Journal of China Coal Society，1996，21(3)：226-230.(in Chinese))
[7]	姜福兴. 矿山压力与岩层控制[M]. 北京：煤炭工业出版，2004：19-27.(JIANG Fuxing. Mining pressure and strata control[M]. Beijing：China Coal Industry Publishing House，2004：19-27.(in Chinese)) " target="_blank">
[8]	国家煤炭工业局. 建筑物、水体、铁路及主要井巷煤柱留设与压煤开采规程[M]. 北京：煤炭工业出版社，2000：225-233.(State Bureau of Coal Industry. Regulations of buildings，water，rail way and main well lane leaving coal pillar and press coal mining[M]. Beijing：China Coal Industry Publishing House，2000：225-233.(in Chinese)) " target="_blank">
[10]	杨本水，段文进. 风氧化带内煤层安全开采关键技术的研究[J]. 煤炭学报，2003，28(6)：609-612.(YANG Benshui，DUAN Wenjin. Study on the law of coal layer safe extraction in efflorescent oxygenized belts[J]. Journal of China Coal Society，2003，28(6)：609-612.(in Chinese))
[14]	何满朝，景海河，孙晓明. 软岩工程力学[M]. 北京：科学出版社，2002：71-80.(HE Manchao，JING Haihe，SUN Xiaoming. Soft rock engineering mechanics[M]. Beijing：Science Press，2002：71-80.(in Chinese)) " target="_blank">
[15]	缪协兴，陈智纯. 软岩力学[M]. 徐州：中国矿业大学出版社，1995：83-96.(MIU Xiexing，CHEN Zhichun. Soft rock mechanics[M]. Xuzhou：China University of Mining and Technology Press，1995：83-96.(in Chinese)) " target="_blank">
[16]	胡小娟，李文平，曹丁涛，等. 综采导水裂隙带多因素影响指标研究与高度预计[J]. 煤炭学报，2012，37(4)：613-620.(HU Xiaojuan，LI Wenping，CAO Dingtao，et al. Index of multiple factors and expected height of fully mechanized water flowing fractured zone[J]. Journal of China Coal Society，2012，37(4)：613-620.(in Chinese))
[17]	孟召平，高延法，卢爱红，等. 矿井突水危险性评价理论与方法[M]. 北京：科学出版社，2011：66-67.(MENG Zhaoping，GAO Yanfa，LU Aihong，et al. Theory and method of water in crush risk assessment in coal mine[M]. Beijing：Science Press，2011：66-67.(in Chinese)) " target="_blank">
[18]	黄庆享，蔚保宁，张文忠. 浅埋煤层黏土隔水层下行裂隙弥合研究[J]. 采矿与安全工程学报，2010，27(1)：35-38.(HUANG Qingxiang，WEI Baoning，ZHANG Wenzhong. Study of downward crack closing of clay aquiclude in shallowly buried coal seam[J]. Journal of Mining and Safety Engineering，2010，27(1)：35-38.(in Chinese))
[20]	黄庆享，刘腾飞. 浅埋煤层开采隔水层位移规律相似模拟研究[J]. 煤田地质与勘探，2006，34(5)：36-37.(HUANG Qingxiang，LIU Tengfei. Simulating test on the subsidence law of subsurface water resisting layer upon shallow coalbed mining[J]. Coal Geology and Exploration，2006，34(5)：36-37.(in Chinese))