建筑物下采空区稳定性分析及处治技术研究
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摘要
由于城市发展和扩大的需要,许多原来处于城市郊区的采空区土地资源必须加以利用,就必须在采空区上修建建筑物,因此研究新建建筑物下采空区的稳定性有着重要的作用。本文通过新建建筑物下采空区顶板稳定性计算和数值模拟的方法对采空区的稳定性进行分析,并对新建建筑物下采空区处治方法进行了研究,取得了一些结论。
本文对国内外已有相关研究文献进行了综合分析,阐述了采空区的形成、采空区稳定性分析方法、采空区处治方法以及数值模拟在采空区中的应用作了总结。通过对新建建筑物下采空区顶板稳定性计算,评价新建建筑物下采空区顶板稳定的临界厚度,从而确定是否需要处理。
应用有限差分相关建模方法,建立了较为简单实用的新建筑物下伏采空区稳定性分析模型,并用大型通用有限差分法分析软件FLAC3D对新建建筑物下采空区的围岩应力和地面沉降进行了数值模拟；通过数值模拟,分析了采空区不同采宽、新建建筑物层数以及不同采空区顶板厚度对采空区稳定性的影响。
本文还对新建房屋建筑物下伏采空区的顶板稳定性进行了计算,阐述了处理采空区的常用方法,提出了用粘土固化充填注浆的方法处理采空区的方法,并对其作了可行性分析。
As urban development and expansion needs, many of the original in the suburban areas of mined land resources must be used, it must be mined area on the construction of buildings, so the research Goaf Under the new buildings have an important role in the stability. In this paper, under the new buildings of the gob roof stability calculation and numerical simulation of the stability of mined-out area analysis, and new buildings under the gob Treatment methods research, made some conclusions.
This article reviewing relevant literature has been a comprehensive analysis to explain the formation of mined areas, the stability analysis of gob, gob treatment method and numerical simulation of Gob summarized. Under the new buildings through the gob roof stability calculation and evaluation of new buildings under the gob roof stable critical thickness could be determined whether to deal with.
Related to modeling using the finite difference method, a more simple and practical new building stability Mined area analysis model has been established, and large-scale finite difference analysis software FLAC3D is used on the new buildings surrounding mined-out area under the stress and the ground Settlement of the numerical simulation; Through numerical simulation, it has been analysised the various mining gob wide and new buildings and the different layers of the gob roof thickness on stability of mined areas.
This article is also building new housing area under the roof mined the stability of the calculation, described dealing with common method of mined areas, proposed filling clay solidified grouting approach to the method of mined areas, and its made a feasibility analysis.
本文对国内外已有相关研究文献进行了综合分析,阐述了采空区的形成、采空区稳定性分析方法、采空区处治方法以及数值模拟在采空区中的应用作了总结。通过对新建建筑物下采空区顶板稳定性计算,评价新建建筑物下采空区顶板稳定的临界厚度,从而确定是否需要处理。
应用有限差分相关建模方法,建立了较为简单实用的新建筑物下伏采空区稳定性分析模型,并用大型通用有限差分法分析软件FLAC3D对新建建筑物下采空区的围岩应力和地面沉降进行了数值模拟；通过数值模拟,分析了采空区不同采宽、新建建筑物层数以及不同采空区顶板厚度对采空区稳定性的影响。
本文还对新建房屋建筑物下伏采空区的顶板稳定性进行了计算,阐述了处理采空区的常用方法,提出了用粘土固化充填注浆的方法处理采空区的方法,并对其作了可行性分析。
As urban development and expansion needs, many of the original in the suburban areas of mined land resources must be used, it must be mined area on the construction of buildings, so the research Goaf Under the new buildings have an important role in the stability. In this paper, under the new buildings of the gob roof stability calculation and numerical simulation of the stability of mined-out area analysis, and new buildings under the gob Treatment methods research, made some conclusions.
This article reviewing relevant literature has been a comprehensive analysis to explain the formation of mined areas, the stability analysis of gob, gob treatment method and numerical simulation of Gob summarized. Under the new buildings through the gob roof stability calculation and evaluation of new buildings under the gob roof stable critical thickness could be determined whether to deal with.
Related to modeling using the finite difference method, a more simple and practical new building stability Mined area analysis model has been established, and large-scale finite difference analysis software FLAC3D is used on the new buildings surrounding mined-out area under the stress and the ground Settlement of the numerical simulation; Through numerical simulation, it has been analysised the various mining gob wide and new buildings and the different layers of the gob roof thickness on stability of mined areas.
This article is also building new housing area under the roof mined the stability of the calculation, described dealing with common method of mined areas, proposed filling clay solidified grouting approach to the method of mined areas, and its made a feasibility analysis.
引文
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[6]X. L. Yao and D. J. Reddish. Nonlinear Finite Element Analysis of Surface Subsidence Arsing From Indined Sean Entraction, INT. I. RODK, Mech.& Mining SCI.1993 (4).
[7]Kalendra B. Singh, Bharat B. Dhar. Sinkhole subsidence due to mining. Geotechnical and Geological Engineering, Springer Science+Business Media B. V., Formerly Kluwer Academic Publishers B. V., Volume 15 Number 4:327-341.
[8]Karfakis, M. G. Residual subsidence over abandoned coal mines, in Comprehensive project case rock engineering, Vol.5, Surface and underground histories, Pergamon Press, Oxford, pp.1993:451-76.
[9]康建荣.采动覆岩动态移动破坏规律及开采沉陷预计系统(MSPS)研究.博士论文,1999年.
[10]常江.老采空区上方建筑物地基稳定性的研究.西安矿业学院学报,1995(1)：29-33.
[11]高大钊.土力学与基础工程[M].北京：中国建筑工业出版社,1998.
[12]武崇福,刘东彦.FLAC3D在采空区稳定性分析中的应用[J].河南理工大学学报,2007,第26卷第2期,136-140.
[13]李明,郑怀昌.贾庄石膏矿采空区稳定FLAC3D分析[J].非金属矿,2009,第32卷第2期,54-57.
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[15]刘之葵.岩溶区溶洞及土洞对建筑地基影响的研究.中南大学博士学位论文,2004.
[16]张晓峰.石膏矿采空区处理方法研究.武汉理工大学硕士学位论文,2007.
[17]何志攀.新建公路下伏采空区的稳定性分析和治理技术研究.中南大学硕士学位论文,2004
[18]杨文孝.高速公路下伏煤矿采空区勘察与处治方法研究.长安大学工程硕士学位论文,2005.
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[21]Rock Mechanics and Rock Engineering Springer Verlag Wien Volume 33, Number 1 2000.01.
[22]R. C. Sidle, I. Kamil, A. Sharma, et al. Stream response to subsidence from underground coal mining in central Utah. Environmental Geology, Springer-Verlag, GmbH Volume 39, Numbers 3-4:279-291.
[23]Yu Xueyi. Endanger level of gob under high class highway. Xi'an Gonglu Xueyuan Xuebao/Journal of Xi'an Highway Transportation University, 2000,20(4):43-45.
[24]Wildanger, E. D. et al. Sink-hole type subsidence over abandoned coal mines in St David, Illinois, Abandoned Mined Lands Reclamation Council, Springfield, and Illinois,1980.
[25]刘超.采空区等级路修建关键技术研究.山东大学硕士学位论文,2008.
[26]卢正,邓喀中.长壁开采老采空区注浆充填范围确定方法.[J].采矿与安全工程学报,2008,第25卷第4期,499-501.
[27]武志德.大刘煤矿采空区对公路工程影响的分析与研究.西安科技大学硕士学位论文,2008.
[28]建筑物、水体、铁路及主要井巷煤柱留设在压煤开采规程.北京,煤炭工业出版社,1986
[29]戴兰芳.采空区地表建筑物基础稳定性的Fuzzy测度分析[J].岩土力学,2004,第25卷第11期,1791-1794.
[30]张晓君.采空区顶板大面积冒落的数值模拟[J].化工矿物与加工,2007年第 9期,17-18。
[31]Young R P. Geotomography in The Study of Rock bursts and Seismicity Rock busters and seismicity in mines [J]. Fairhurst,1990:29-37.
[32]FLAC-3D Itasca Inc. Minnesota.2002.
[33]Chen Youqing. A fluorescent approach to the identification of grout injected into fissures and pore spaces. Engineering Geology,2000, 56(3/4):395-401.
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