天府三汇一矿地应力场三维有限元分析及其分布特征
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摘要
重庆天府三汇一矿位于华蓥山帚状褶皱带的收敛端,属地应力相对集中地带,矿区的煤与瓦斯突出不但发生的次数多,突出强度也大,且正在开采的煤层均属突出煤层,对该区域原始应力场的三维分布规律研究可为矿井生产设计及煤与瓦斯突出危险性区域预测提供参考依据。在收集三汇一矿地质资料的基础上,建立起三维有限元计算模型,利用ANSYS大型通用有限元软件采用弹塑性有限元法对该矿初始地应力场进行数值模拟。根据模拟结果,分析了三汇一矿地应力场的三维分布特征,并对K煤层的地应力分布进行了分析。
Tianfu Sanhui No.1 mine of Chongqing is located in the convergent extreme of Huayingshan scopulate fold belt, which is an area of in-situ stresses concentration. Coal and gas outburst occurred not only frequently, but also high-intensity, and the working seams are all outburst seams, so the research of its three-dimensional initial in-situ stresses field can put forward the suggestion on the production design of coal mine and the prediction of coal and gas outbursts. Based on the geological materials about Sanhui No.1 mine, this paper developes the 3D FEM model, and uses the elastoplastic finite element method and ANSYS program in numerical simulation of the initial in-situ stresses field. Based on the simulation results, it analyzes the characters of the in-situ stresses of Sanhui No.1 mine and K_1 coal seam.
Tianfu Sanhui No.1 mine of Chongqing is located in the convergent extreme of Huayingshan scopulate fold belt, which is an area of in-situ stresses concentration. Coal and gas outburst occurred not only frequently, but also high-intensity, and the working seams are all outburst seams, so the research of its three-dimensional initial in-situ stresses field can put forward the suggestion on the production design of coal mine and the prediction of coal and gas outbursts. Based on the geological materials about Sanhui No.1 mine, this paper developes the 3D FEM model, and uses the elastoplastic finite element method and ANSYS program in numerical simulation of the initial in-situ stresses field. Based on the simulation results, it analyzes the characters of the in-situ stresses of Sanhui No.1 mine and K_1 coal seam.
引文
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[17]李东旭,周济元.地质力学导论[M].北京:地质出版社,1986.
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[20]程立朝,陆庭侃.膨胀特性对软岩巷道围岩变形规律的影响研究[J].河南理工大学学报,2006,25(6):461-464.CHENG LI-CHAO,LU TING-KAN.Research on the effect of dilatancy characteristics to the lawof surrounding ground deformationin soft rock roadway[J].Journal of Henan Polytechnic University,2006,25(6):461-464.
[21]魏福生,胡国忠,王宏图,等.永川煤矿地应力测试及地应力变化特征[J].矿业安全与环保,2007,34(4):1-3.WEI FU-SHENG,HU GUO-ZHONG,WANG HONG-TU,et al.Measurement and variation characteristics of strata stressin Yong chuancoal mine[J].Mining Safety&Environmental Protection,2007,34(4):1-3.
[22]苏生瑞,朱合华,王士天,等.岩石物理力学性质对断裂附近地应力场的影响[J].岩石力学与工程学报,2003,22(3):370-377.SU SHENG-RUI,ZHU HE-HUA,WANG SHI-TIAN,et al.Effect of physical and mechanical properties of rocks on stress field in the vicinity of fractures[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(3):370-377.
[2]加卢什科ЛЯ.里沃夫-沃伦和顿巴斯煤田岩体应力的研究成果:地壳应力状态[M].国家地震局地震地质大队情报资料室,译.北京:地震出版社,1978.
[3]朱兴珊,徐凤银.论构造应力场及其演化对煤和瓦斯突出的主控作用[J].煤炭学报,1994,19(3):304-313.ZHU XING-SHAN,XU FENG-YIN.The controlling effect of tectonic stress field and its evolution on coal and gas outburst[J].Journal of China Coal Society,1994,19(3):304-313.
[4]汪西海.煤和瓦斯突出与地应力之关系[J].地质力学学报,1997,3(1):88-94.WANG XI-HAI.Astudy on the relation between rock stress and outbursts[J].Journal of Geomechanics,1997,3(1):88-94.
[5]张宏伟.地质动力区划方法在煤与瓦斯突出区域预测中的应用[J].岩石力学与工程学报,2003,22(4):621-624.ZHANG HONG-WEI.Application of geodynamic division method in prediction of coal and gas outburst region[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(4):621-624.
[6]韩军,张宏伟,宋卫华,等.煤与瓦斯突出矿区地应力场研究[J].岩石力学与工程学报,2008,27(增2):3852-3859.HANJUN,ZHANG HONG-WEI,SONG WEI-HUA,et al.In-situ stress field of coal and gas outburst mining area[J].Chinese Journal of Rock Mechanics and Engineering,2008,27(S2):3852-3859.
[7]罗康成.地应力场对煤与瓦斯突出的控制作用[J].煤炭工程,2009,8:95-97.
[8]张延新,蔡美峰,王克忠.平顶山一矿地应力分布特征研究[J].岩石力学与工程学报,2004,23(23):4033-4037.ZHANG YAN-XIN,CAI MING-FENG,WANG KE-ZHONG.Study on distribution characteristics of in-situ stresses for Ping Ding Shan No.1mine[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(23):4033-4037.
[9]康红普,姜铁明,张晓,等.晋城矿区地应力场研究及应用[J].岩石力学与工程学报,2009,28(1):1-8.KANG HONG-PU,JIANG TIE-MING,ZHANG XIAO,et al.Research onin-situ stress fieldin Jinchuan mining area and its application[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(1):1-8.
[10]MCKINNON S D.Analysis of stress measurements using a numerical model methodology[J].International Journal of Rock Mechanics&Mining Sciences,2001,38(5):699-709.
[11]杨强,程勇刚,张浩.基于格构模型的岩石类材料开裂数值模拟[J].工程力学,2003,20(1):117-121.YANG QIANG,CHENG YONG-GANG,ZHANG HAO.Si mulation of cracking processes of rock materials by lattice model[J].Engineering Mechanics,2003,20(1):117-121.
[12]SU S.Effect of fractures onin situ stresses studied by the distinct element method[J].International Journal of Rock Mechanics and Mining Science,2004,41(1):159-164.
[13]张延新,蔡美峰,王克忠.三维初始地应力场计算方法与工程应用[J].北京科技大学学报,2005,27(5):520-523.ZHANG YAN-XIN,CAI MING-FENG,WANG KE-ZHONG.Algorithm of in-situ stress field and its application[J].Journal of University of Science and Technology Beijing,2005,27(5):520-523.
[14]马淑芝,贾洪彪,易顺民,等.罗湖断裂带地应力场三维有限元模拟分析[J].岩石力学与工程学报,2006,25(增2):3898-3903.MA SHU-ZHI,JIA HONG-BIAO,YI SHUN-MING,et al.Analysis of geostress field si mulation in Luohu fault zone with3D finite element method[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(Supp.2):3898-3903.
[15]MATSUKI K,NAKAMA S,SATO T.Esti mation of regional stress by FEMfor a heterogeneous rock mass with alarge fault[J].International Journal of Rock Mechanics and Mining Sciences,2008,45(4):467-652.
[16]张天模.天府三汇一矿煤与瓦斯突出差异分析及处理措施[J].重庆职业技术学院学报,2006,15(4):140-142.ZHANG TIAN-MO.Analysis of the differences and countermeasures for the large amount of coal and gas in Sanhui Tianfu mining area[J].Journal of Chongqing Vocational&Technical Institute,2006,15(4):140-142.
[17]李东旭,周济元.地质力学导论[M].北京:地质出版社,1986.
[18]张波,盛和太.ANSYS有限元数值分析原理与工程应用[M].北京:清华大学出版社,2005.
[19]刘建华,朱维申,李术才.岩土介质三维快速拉格朗日数值分析方法研究[J].岩土力学,2006,27(4):525-529.LI U JIAN-HUA,ZHU WEI-SHEN,LI SHU-CAI.Study on fast lagrangian numerical analysis method forrock and soil mediumin3di mensions[J].Rock and Soil Mechanics,2006,27(4):525-529.
[20]程立朝,陆庭侃.膨胀特性对软岩巷道围岩变形规律的影响研究[J].河南理工大学学报,2006,25(6):461-464.CHENG LI-CHAO,LU TING-KAN.Research on the effect of dilatancy characteristics to the lawof surrounding ground deformationin soft rock roadway[J].Journal of Henan Polytechnic University,2006,25(6):461-464.
[21]魏福生,胡国忠,王宏图,等.永川煤矿地应力测试及地应力变化特征[J].矿业安全与环保,2007,34(4):1-3.WEI FU-SHENG,HU GUO-ZHONG,WANG HONG-TU,et al.Measurement and variation characteristics of strata stressin Yong chuancoal mine[J].Mining Safety&Environmental Protection,2007,34(4):1-3.
[22]苏生瑞,朱合华,王士天,等.岩石物理力学性质对断裂附近地应力场的影响[J].岩石力学与工程学报,2003,22(3):370-377.SU SHENG-RUI,ZHU HE-HUA,WANG SHI-TIAN,et al.Effect of physical and mechanical properties of rocks on stress field in the vicinity of fractures[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(3):370-377.
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