多期构造运动影响下区域地应力场特征及其对冲击地压的影响
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摘要
通过对双鸭山煤田构造演化及成煤构造特征的分析,结合煤田内部低序次构造分布特征及7个矿井不同开采水平的22个测点的地应力实测结果,得出双鸭山煤田以东西向弧形构造和新华夏系构造控制为主并将其由西到东分为安邦河区、扁石河区和七星河区3个区段。分析了主体张性构造应力控制下雁阵式构造、帚状构造等低序次构造分布规律及伴生特征,得出煤田属以水平应力为主且最大主应力量值大多在30 MPa以上的σH>σh>σv型高地应力场。实测所得地应力数据离散型较大但最大主应力、侧向压力系数以及水平差应力整体上均随深度的增加而增大的规律。从区域构造作用及局部采场应力特征的角度分析了东保卫煤矿冲击地压事故的原因和影响因素,为煤田矿井深部区域动力区划和开拓布局提供了划分依据方向和设计建议。
Based on the characteristics of tectonic evolution and coal-forming activities, as well as the distribution of subordinate structure and the in-situ stress measurement results at 22 points in 7 coal mines of Shuangyashan coal field, it's obtained that coal mining areas is primarily controlled by the east-west arcuate structure and new cathaysian tectonic. Meanwhile, it can be divided into three sections from east to west, i.e. Anbang river, Bianshi river and Qixing river. The distribution law of subordinate structures such as en-echelon structure, brush structure and the associated structure under principal tensional tectonic stress was analyzed. Affected by the composite superimposition of multi-stage tectonic movement, though the discreteness of stress measurement data is great. The horizontal stress increases with the increase in depth. The value of maximum horizontal principal stress is more than 30 MPa, the type of stress field follows σH>σh>σv. The causes and influence factors of rockburst accident in Dong baowei coalmine was analyzed from perspectives of regional tectonic stress and local mining stress,which could provide development direction and design suggestion for geo-dynamic division and mining layout in deep coalmining.
Based on the characteristics of tectonic evolution and coal-forming activities, as well as the distribution of subordinate structure and the in-situ stress measurement results at 22 points in 7 coal mines of Shuangyashan coal field, it's obtained that coal mining areas is primarily controlled by the east-west arcuate structure and new cathaysian tectonic. Meanwhile, it can be divided into three sections from east to west, i.e. Anbang river, Bianshi river and Qixing river. The distribution law of subordinate structures such as en-echelon structure, brush structure and the associated structure under principal tensional tectonic stress was analyzed. Affected by the composite superimposition of multi-stage tectonic movement, though the discreteness of stress measurement data is great. The horizontal stress increases with the increase in depth. The value of maximum horizontal principal stress is more than 30 MPa, the type of stress field follows σH>σh>σv. The causes and influence factors of rockburst accident in Dong baowei coalmine was analyzed from perspectives of regional tectonic stress and local mining stress,which could provide development direction and design suggestion for geo-dynamic division and mining layout in deep coalmining.
引文
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[19]齐庆新,李晓璐,赵善坤.煤矿冲击地压应力控制理论与实践[J].煤炭科学技术,2013,41(6):1-5.QI Qingxin,LI Xiaolu,ZHAO Shankun.Theory and practices on stress control of mine pressure bumping[J].Coal Science and Technology,2013,41(6):1-5.
[2]谢富仁,陈群策.中国大陆地壳应力环境数据库[J].地球物理学进展,2007,22(1):131-136.XIE Furen,CHEN Qunce.Fundamental database of crustal stress environment in continental China[J].Progress in Geophysics,2007,22(1):131-136.
[3]CHISTIANSSON R.The latest development for in-situ rock stress measuring techniques[C]//Proceedings of the International Symposium on in-situ Rock Stress.Trondheim,Norway:[s.n.],2006:3-10.
[4]李鹏,苗胜军.中国煤矿矿区地应力场特征与断层活动性分析[J].煤炭学报,2016,41(增刊2):319-329.LI Peng,MIAO Shengjun.Analysis of the characteristics of in-situ stress field and fault activity in the coal mining area of China[J].Journal of China Coal Society,2016,41(Sup 2):319-329.
[5]乔伟,李文平.深部矿井地应力场分布规律及其在冲击地压预测中的应用[J].工程地质学报,2008,16(增刊1):124-128.QIAO Wei,LI Wenping.Distribution law of in-situ stress field in engineering subzone of deep coal mine and application in forecast of outburst[J].Journal of Engineering Geology,2008,16(Sup 1):124-128.
[6]尹光志,鲜学福,金立平,等.地应力对冲击地压的影响及冲击危险区域评价的研究[J].煤炭学报,1997,22(2):132-137.YIN Guangzhi,XIAN Xuefu,JIN Liping,et al.The effect of crustal stresses on rockburst and evolution of zone prone to rockburst[J].Journal of China Coal Society,1997,22(2):132-137.
[7]王连国,陆银龙,杨新华,等.霍州矿区地应力分布规律实测研究[J].岩石力学与工程学报,2010,29(增刊1):2768-2775.WANG Lianguo,LU Yinlong,YANG Xinhua,et al.Study of distribution characteristic of in-situ stresses for Huozhou mining area[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(Sup 1):2768-2775.
[8]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 Hongpu,JIANG Tieming,ZHANG Xiao,et al.Research on in-situ stress field in Jincheng mining area and its application[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(1):1-8.
[9]肖同强,支光辉,张治高.深部构造区域地应力分布与巷道稳定关系研究[J].采矿与安全工程学报,2013,30(5):659-664.XIAO Tongqiang,ZHI Guanghui,ZHANG Zhigao.Relationship between ground stress distribution and roadway stability in deep tectonic region[J].Journal of Mining and Safety Engineering,2013,30(5):659-664.
[10]徐宏杰,桑树勋,易同生,等.黔西地应力场特征及构造成因[J].中南大学学报(自然科学版),2014,45(6):1960-1967.XU Hongjie,SANG Shuxun,YI Tongsheng,et al.Characteristics of in-situ stress field and its tectonic origin in western Guizhou[J].Journal of Central South University(Science and Technology),2014,45(6):1960-1967.
[11]邓成虎,周文,姜昊罡,等.构造变形对现今地应力方向的影响[J].石油钻采工艺,2009,31(4):57-63.DENG Chenghu,ZHOU Wen,JIANG Haogang,et al.Effect of tectonic deformation on current geo-stress orientation[J].Oil Drilling&Production Technology,2009,31(4):57-63.
[12]张延新,蔡美峰.地应力场与地质构造运动关系研究[J].铜业工程,2004,21(3):7-9.ZHANG Yanxin,CAI Meifeng.Study on the relationship between in-situ stress field and tectonization[J].Copper Engineering,2004,21(3):7-9.
[13]王迎超,靖洪文,陈坤福,等.平顶山矿区地应力分布规律与空间区划研究[J].岩石力学与工程学报,2014,33(增刊1):2620-2628.WANG Yingchao,JING Hongwen,CHEN Kunfu,et al.Study on distribution regularities and regional division of in-situ stress for Pingdingshan mining area[J].Chinese Journal of Rock Mechanics and Engineering,2014,33(Sup 1):2620-2628.
[14]郭爱军.东北地区中、新生代成煤盆地构造演化与动力学分析[D].北京:中国矿业大学(北京),2014.
[15]温全波,刘永江,韩国卿,等.黑龙江东部盆地群中、新生代构造演化[J].世界地质,2008,27(4):370-377.WEN Quanbo,LIU Yongjiang,HAN Guoqing,et al.Mesozoic and Cenozoic tectonic evolution of the basin group in eastern Heilongjiang in China[J].Global Geology,2008,27(4):370-377.
[16]杨继权,王秀琴,刘殿生,等.黑龙江省大地构造单元划分及特征[J].世界地质,2007,26(4):426-436.YANG Jiquan,WANG Xiuqin,LIU Diansheng,et al.Division and characters of geotectonic unit of Heilongjiang province[J].Global Geology,2007,26(4):426-436.
[17]曹成润,郑庆道.黑龙江省东部残留盆地群构造演化特征及其油气勘探意义[J].吉林大学学报(地球科学版),2003,33(2):167-172.CAO Chengrun,ZHENG Qingdao.Structural evolution features and its significance of hydrocarbon exploration in relict basin group,eastern Heilongjiang province[J].Journal of Jilin University(Earth Science Edition),2003,33(2):167-172.
[18]景峰.中国大陆浅源地壳应力场分布规律及工程扰动特征研究[D].北京:中国科学院,2008:12-19.
[19]齐庆新,李晓璐,赵善坤.煤矿冲击地压应力控制理论与实践[J].煤炭科学技术,2013,41(6):1-5.QI Qingxin,LI Xiaolu,ZHAO Shankun.Theory and practices on stress control of mine pressure bumping[J].Coal Science and Technology,2013,41(6):1-5.
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