首山一矿深部地应力分布规律及影响因素
TD311; 为探讨平顶山首山一矿深部地应力分布规律及其影响因素,基于矿井实测地应力数据,运用构造物理学、岩石力学和数值模拟方法,研究了测点地应力类型、大小和方向分布规律,反演了地应力场分布特征,分析了埋深、岩性和地质构造对地应力的影响,确定了影响地应力分布的主控因素.研究表明:多元回归反演分析法获得的地应力计算值与实测值吻合,相对误差小于20%,结果可靠.矿井煤岩体处于三维压应力状态,煤层主应力关系为SH＞SV＞Sh,地应力由矿井北部向南部呈现先增大后减小再增大的变化趋势,地应力为 28～44 MPa,属于高应力水平,地应力方向为NEE向.埋深影响地应力大小和类型,随埋深增加主应力增大,应力...
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| Published in | 煤炭学报 Vol. 49; no. 5; pp. 2360 - 2375 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国矿业大学(北京)应急管理与安全工程学院,北京 100083%中国矿业大学(北京)应急管理与安全工程学院,北京 100083
01.05.2024
中国平煤神马能源化工集团有限责任公司,河南平顶山 467000%中国平煤神马能源化工集团有限责任公司,河南平顶山 467000 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-9993 |
| DOI | 10.13225/j.cnki.jccs.2023.1646 |
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| Abstract | TD311; 为探讨平顶山首山一矿深部地应力分布规律及其影响因素,基于矿井实测地应力数据,运用构造物理学、岩石力学和数值模拟方法,研究了测点地应力类型、大小和方向分布规律,反演了地应力场分布特征,分析了埋深、岩性和地质构造对地应力的影响,确定了影响地应力分布的主控因素.研究表明:多元回归反演分析法获得的地应力计算值与实测值吻合,相对误差小于20%,结果可靠.矿井煤岩体处于三维压应力状态,煤层主应力关系为SH＞SV＞Sh,地应力由矿井北部向南部呈现先增大后减小再增大的变化趋势,地应力为 28～44 MPa,属于高应力水平,地应力方向为NEE向.埋深影响地应力大小和类型,随埋深增加主应力增大,应力场类型向准静水压力场过渡;岩性与地应力密切相关,从泥岩到砂岩或灰岩,地应力增大,弹性模量越大地应力越大,地层岩性的差异造成地应力大小离散分布、应力方向偏转角不超过 10°;矿井地应力与埋深、弹性模量的关系可表示为σH=0.0350H+0.4681E-8.5513.地质构造是影响首山一矿地应力分布的主控因素,褶皱形态控制地应力的水平应力分布,向斜内弧应力值大于背斜内弧,且褶皱弯曲程度越大,其内弧地应力越大,应力梯度越大;断层带内应力降低、断层尖灭端应力集中,地应力方向沿着断层走向偏转,与断层走向夹角越大,应力方向偏转角越大;断层切割复式褶皱时,断层与向斜构造组合区应力值大于断层与背斜构造组合区,且断褶构造组合造成地应力方向分布紊乱. |
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| AbstractList | TD311; 为探讨平顶山首山一矿深部地应力分布规律及其影响因素,基于矿井实测地应力数据,运用构造物理学、岩石力学和数值模拟方法,研究了测点地应力类型、大小和方向分布规律,反演了地应力场分布特征,分析了埋深、岩性和地质构造对地应力的影响,确定了影响地应力分布的主控因素.研究表明:多元回归反演分析法获得的地应力计算值与实测值吻合,相对误差小于20%,结果可靠.矿井煤岩体处于三维压应力状态,煤层主应力关系为SH＞SV＞Sh,地应力由矿井北部向南部呈现先增大后减小再增大的变化趋势,地应力为 28～44 MPa,属于高应力水平,地应力方向为NEE向.埋深影响地应力大小和类型,随埋深增加主应力增大,应力场类型向准静水压力场过渡;岩性与地应力密切相关,从泥岩到砂岩或灰岩,地应力增大,弹性模量越大地应力越大,地层岩性的差异造成地应力大小离散分布、应力方向偏转角不超过 10°;矿井地应力与埋深、弹性模量的关系可表示为σH=0.0350H+0.4681E-8.5513.地质构造是影响首山一矿地应力分布的主控因素,褶皱形态控制地应力的水平应力分布,向斜内弧应力值大于背斜内弧,且褶皱弯曲程度越大,其内弧地应力越大,应力梯度越大;断层带内应力降低、断层尖灭端应力集中,地应力方向沿着断层走向偏转,与断层走向夹角越大,应力方向偏转角越大;断层切割复式褶皱时,断层与向斜构造组合区应力值大于断层与背斜构造组合区,且断褶构造组合造成地应力方向分布紊乱. |
| Abstract_FL | To investigate the distribution pattern and influencing factors of in-situ stress for deep levels in the Shoushan No.1 Mine,according to the measured in-situ stress data of the mine,the tectonophysics and rock mechanics and numeric-al simulation methods were applied to study the type,magnitude and direction distribution pattern of in-situ stress.The distribution characteristics of in-situ stress field was simulated.The effect of buried depth,lithology and geological struc-ture on the in-situ stress distribution was analyzed.The main factor of in-situ stress distribution was determined.The re-search shows that the in-situ stress values obtained by the multiple regression analysis of inversion method are consistent with the measured values.The relative error is less than 20%and the results are reliable.The coal and rock mass of mine is in a state of three-dimensional compressive stress.The principal stresses relation of coal seam is SH＞SV＞Sh.The in-situ stress increases firstly,then decreases and finally increases from the north to the south of the mine.The magnitude of in-situ stress is 28-44 MPa and belongs to the high stress level.The in-situ stress direction is NEE.The buried depth controls the magnitude and type distribution of the in-situ stress.With the increase of buried depth,the principal stress is increas-ing and the stress field type has the changing tendency from the dynamic stress field to quasi-hydrostatic pressure field.The lithology has a closely relationship with the in-situ stress.From mudstone to sandstone or limestone,the in-situ stress is increasing.The larger the elasticity module is,the higher the in-situ stress is.The difference of stratum lithology causes the discrete distribution of in-situ stress and the deflection angle of in-situ stress direction is less than 10°.The relation between the in-situ stress and the buried depth and the elasticity modulus is expressed as σH=0.0350H+0.4681E-8.5513 in the mine.The geological structure is the main controlling factor of in-situ stress in the mine.The fold shape controls the horizontal stress distribution of the in-situ stress.The in-situ stress of the syncline inner arc is more than that of the anti-cline inner arc.With the increase of the fold crook degree,the in-situ stress of inner arc increases gradually,and its stress gradient increases gradually.The in-situ stress of fault zone is decreasing and the in-situ stress of the fault pinch-out side is greater.The in-situ stress direction deflects along the fault strike.The larger the angle between maximum horizontal prin-cipal stress and the fault strike is,the greater deflection angle of maximum horizontal principal stress direction is.The in-situ stress of the tectonic association zone of fault and syncline is more than that of the tectonic association of fault and an-ticline.The tectonic association causes the undirectional distribution of the in-situ stress direction. |
| Author | 张铁岗 郭明生 郭德勇 揣筱升 |
| AuthorAffiliation | 中国矿业大学(北京)应急管理与安全工程学院,北京 100083%中国矿业大学(北京)应急管理与安全工程学院,北京 100083;中国平煤神马能源化工集团有限责任公司,河南平顶山 467000%中国平煤神马能源化工集团有限责任公司,河南平顶山 467000 |
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| Author_FL | GUO Deyong CHUAI Xiaosheng ZHANG Tiegang GUO Mingsheng |
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| DocumentTitle_FL | Distribution pattern and influencing factors of in-situ stress for deep levels in Shoushan No.1 Coal Mine |
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| Keywords | 构造物理 应力解除法 stress relief method Shoushan No.1 Coal Mine 地应力测量 in-situ stress measurement tectonophysics 首山一矿 |
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| PublicationTitle_FL | Journal of China Coal Society |
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| Publisher | 中国矿业大学(北京)应急管理与安全工程学院,北京 100083%中国矿业大学(北京)应急管理与安全工程学院,北京 100083 中国平煤神马能源化工集团有限责任公司,河南平顶山 467000%中国平煤神马能源化工集团有限责任公司,河南平顶山 467000 |
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