含山陶厂石膏矿构造应力场数值模拟分析
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摘要
为了分析井田内主要构造断裂的导水性,为断层岩柱留设提供依据,运用有限元法的三维数值模拟程序,对陶厂石膏矿现代构造应力场进行了模拟。模拟结果表明,在断层F17附近存在较大的压应力,在F1及F2断层附近的石膏矿体中存在拉应力,在石膏矿体中的应力水平相对较低且均一。断层附近的Z方向的应力相对石膏矿体的应力低。应力矢量分布中拉应力矢量主要分布在石膏矿体靠近断层附近,随着石膏矿体与断层距离的增加,逐渐转化为压应力,而在断层的交汇处压应力值较高。
In order to analyze water permeability of big tectonic faults and provide the basis of fault waterproof rock pillar setting,modern tectonic stress field of Taochang gypsum mine was simulated by using three dimensional numerical simulation program of finite element method.The simulation results showed that relatively large compressive stress exists near the F17 fault,tensile stress in gypsum ore body near F1 and F2 fault.Relatively small stress uniformly distributes in the gypsum ore body.The stress in Z direction nearby the fault is lower than that in the ore body.Tensile stress vector in stress vector distribution mainly distributes in the ore bodies near fault.Stress gradually transforms into compressive stress from tensile stress,with increase of distance between gypsum ore body and fault,and the compressive stress is higher at the crossroads of the faults.
In order to analyze water permeability of big tectonic faults and provide the basis of fault waterproof rock pillar setting,modern tectonic stress field of Taochang gypsum mine was simulated by using three dimensional numerical simulation program of finite element method.The simulation results showed that relatively large compressive stress exists near the F17 fault,tensile stress in gypsum ore body near F1 and F2 fault.Relatively small stress uniformly distributes in the gypsum ore body.The stress in Z direction nearby the fault is lower than that in the ore body.Tensile stress vector in stress vector distribution mainly distributes in the ore bodies near fault.Stress gradually transforms into compressive stress from tensile stress,with increase of distance between gypsum ore body and fault,and the compressive stress is higher at the crossroads of the faults.
引文
[1]宋卫华,张宏伟,徐秀茹.区域构造应力场的数值模拟与应用[J],辽宁工程技术大学学报:自然科学版,2006,25(1):39-41.
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[5]杨伟利,王毅,李亚辉,等.准噶尔盆地燕山运动期构造应力场模拟[J].新疆石油地质,2003,24(2):124-127.
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[2]孙晓庆.古构造应力场有限元数值模拟的应用及展望[J].断块油气田,2008,15(3):31-33.
[3]田宜平,刘雄,李星,等.构造应力场三维数值模拟的有限单元法[J].地球科学-中国地质大学学报,2011,36(2):375-380.
[4]张胜.构造应力场模拟——有限元理论、方法和研究进展[J].西北地震学报,2010,32(4):405-409.
[5]杨伟利,王毅,李亚辉,等.准噶尔盆地燕山运动期构造应力场模拟[J].新疆石油地质,2003,24(2):124-127.
[6]孙远进,胡宝林,吴诗勇,等.陶厂石膏矿地质构造三维模拟及分析[J],安徽理工大学学报:自然科学版,2011,31(1):63-67.
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