地表动态移动变形预测函数研究

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Abstract Based on the study of time functions during dynamic analysis of mining subsidence both at home and abroad，the probability integral method is used to study the regularity that surface subsidence caused by underground mining varies with the changes of time and space；and the coordinate-time functions of dynamic surface movement and deformation are proposed. Compared to Knothe time function W(t)，the coordinate-time functions not only add a coordinate variable x，but also add several strata movement parameters(q，r，v，ω，?，t0) which are unified with the parameters used in static analysis of probability integral method. Relation formula of starting time t0 changing with coordinate variable x is studied. Compared to some typical time functions such as Knothe time function，subsidence coordinate-time function W(x，t) can overcome the imperfections of first derivative and second derivative that exist in Knothe time function. What?s more，the changing regularities of subsidence，subsidence rate，subsidence acceleration are correctly revealed. Besides，coordinate-time functions of dynamic tilt，dynamic curvature，horizontal movement，horizontal deformation，etc.. can be obtained from partial derivative calculation of x . Then，basic formulae of dynamic analysis of surface movement and deformation are established under conditions of semi-infinite mining and finite mining. Based on the above topic and analysis，practical verification combined with examples is accomplished. The results show that the conventional static analysis function is just a special case of the coordinate-time functions of surface movement and deformation；and the coordinate-time functions correctly describe the dynamic process of surface subsidence. The coordinate-time functions including several well-known strata movement parameters could fully reflect geological mining conditions and it deserves to be spread widely.

Key words： mining engineering probability integral surface movement and deformation coordinate-time function

Received: 23 March 2011

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https://rockmech.whrsm.ac.cn/EN/Y2011/V30/I9/1889

[1] 常占强，王金庄. 关于地表点下沉时间函数的研究——改进的克诺特时间函数[J]. 岩石力学与工程学报，2003，22(9)：1 496–1 499. (CHANG Zhanqiang，WANG Jinzhuang. Study on time function of surface subsidence—the improved Knothe time function[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(9)：1 496– 1 499.(in Chinese)) [2] 崔希民，缪协兴，赵英利，等. 论地表移动过程的时间函数[J]. 煤炭学报，1999，24(5)：453–456.(CUI Ximin，MIAO Xiexing，ZHAO Yingli，et al. Discussion on the time function of time dependent surface movement[J]. Journal of China Coal Society，1999，24(5)：453–456.(in Chinese)) [3] 彭小沾，崔希民，臧永强，等. 时间函数与地表动态移动变形规律[J]. 北京科技大学学报，2004，26(4)：341–344.(PENG Xiaozhan，CUI Ximin，ZANG Yongqiang，et al. Time function and prediction of progressive surface movements and deformations[J]. Journal of University of Science and Technology Beijing，2004，26(4)：341–344.(in Chinese)) [4] 刘玉成，曹树刚，刘延保. 可描述地表沉陷动态过程的时间函数模型探讨[J]. 岩土力学，2010，31(3)：925–931.(LIU Yucheng，CAO Shugang，LIU Yanbao. Discussion on some time function models for describing dynamic course of surface subsidence due to mining[J]. Rock and Soil Mechanics，2010，31(3)：925–931.(in Chinese)) [5] GONZALEZ-NICIEZA C，ALVAREZ-FERNANDEZ M I，MENENDEZ- DIAZ A，et al. The influence of time on subsidence in the central Austrian coal field[J]. Bulletin of Engineering Geology and the Environment，2007，66(3)：319–329. [6] DÍAZ-FERNÁNDEZ M E，ÁLVAREZ-FERNÁNDEZ M I，ÁLVAREZ- VIGIL A E. Computation of influence functions for automatic mining subsidence prediction[J]. Computational Geosciences，2010，14(1)：83–103. [7] 朱广轶，朱乐君，郭影. 地表沉陷动态时间函数研究[J]. 西安科技大学学报，2009，29(3)：329–332.(ZHU Guangyi，ZHU Lejun，GUO Ying. Study of dynamic time function in surface subsidence[J]. Journal of Xi?an Institute of Science and Technology，2009，29(3)：329–332.(in Chinese)) [8] 何国清，杨伦，凌赓娣，等. 矿山开采沉陷学[M]. 徐州：中国矿业大学出版社，1991.(HE Guoqing，YANG Lun，LING Gengdi，et al. Mining subsidence theory[M]. Xuzhou：China University of Mining and Technology Press，1991.(in Chinese)) [9] 张跃，谭志祥，邓喀中. 许疃矿地表移动变形规律实测研究[J]. 矿山测量，2007，(4)：7–10.(ZHANG Yue，TAN Zhixiang，DENG Kazhong. Field study on laws of surface movement deformation at Xutong coalmine[J]. Mine Surveying，2007，(4)：7–10.(in Chinese)) [10] 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[S]. 北京：煤炭工业出版社，2000：10–17.(State Bureau of Coal Industry. Code for building，water，railway and compressed coal mining and leaving coal pillar of main well lane[S]. Beijing：China Coal Industry Publishing House，2000：10–17.(in Chinese)) [11] 孙学阳. 简单地质–开采条件下的采煤沉陷预测程序设计[博士学位论文][D]. 西安：西安科技大学，2005.(SUN Xueyang. Programming on prediction of coal-mining-induced subsidence under simple geological- mining conditions[Ph. D. Thesis][D]. Xi?an：Xi?an University of Science and Technology，2005.(in Chinese))