空心包体应变计地应力分量计算方法及应用
|
摘要
为进一步改进和完善空心包体应变计地应力计算方法,基于地应力现场实测过程中空心包体应变计的安装方式,采用线性参数的最小二乘拟合方法对地应力分量计算公式进行了推导,得出了6个地应力分量的改进算法及其标准误差的计算公式。采用实现完全温度补偿并考虑岩体非线性的地应力测量技术,对弓长岭井下矿-160、-220、-280 m 3个水平3个测点进行了地应力现场实测,得到了3组孔壁应变数据。分别使用常规算法和改进算法对3个测点的地应力分量进行计算并分析其标准误差。结果表明:采用改进算法计算得到的地应力分量其标准误差普遍小于常规算法计算地应力分量产生的标准误差,说明改进算法比常规算法具有更高的可靠度。在此基础上,对弓长岭井下矿地应力赋存规律进行了研究。结果显示:矿区地应力场以水平构造应力为主导,最大水平主应力的走向总体上为南东东-北西西方向,最大水平主应力、最小水平主应力和垂直主应力均随深度呈增长关系。
To improve the in-situ stress calculation method applied in hollow inclusion measurement, the formulas to calculate in-situ stress components are deduced by the least squares fitting method of the linear parameter by considering the installation mode of the hollow inclusion strain cell. We obtained a modified calculation method of six in-situ stress components with standard errors. In Gongchangling underground mine, measurements were performed by using the complete temperature compensation technique, and the improved hollow inclusion strain devices are applied at three points with the levels of -160 m,-220 m and -280 m, respectively. Three sets of borehole wall strain data are measured. The results show that the standard error of in-situ stress components calculated by the modified calculation method is less than that calculated by the traditional method. Therefore, the reliability of calculated results is improved by using the modified calculation method. Based on six obtained in-situ stress components calculated by the modified method, the stress states of Gongchangling underground mine are analyzed. The results show that the in-situ stress is dominated by the horizontal tectonic stress field in the mine area. The maximum horizontal principal stress is oriented in SEE-NWW direction. The maximum horizontal principal stress, the minor horizontal principal stress and the vertical principal stress are increased with the depth.
To improve the in-situ stress calculation method applied in hollow inclusion measurement, the formulas to calculate in-situ stress components are deduced by the least squares fitting method of the linear parameter by considering the installation mode of the hollow inclusion strain cell. We obtained a modified calculation method of six in-situ stress components with standard errors. In Gongchangling underground mine, measurements were performed by using the complete temperature compensation technique, and the improved hollow inclusion strain devices are applied at three points with the levels of -160 m,-220 m and -280 m, respectively. Three sets of borehole wall strain data are measured. The results show that the standard error of in-situ stress components calculated by the modified calculation method is less than that calculated by the traditional method. Therefore, the reliability of calculated results is improved by using the modified calculation method. Based on six obtained in-situ stress components calculated by the modified method, the stress states of Gongchangling underground mine are analyzed. The results show that the in-situ stress is dominated by the horizontal tectonic stress field in the mine area. The maximum horizontal principal stress is oriented in SEE-NWW direction. The maximum horizontal principal stress, the minor horizontal principal stress and the vertical principal stress are increased with the depth.
引文
[1]李华,李崇标,刘云鹏,等.中国西南深切峡谷岸坡地应力场基本特征[J].岩土力学,2016,37(增刊1):482-488.LI Hua,LI Chong-biao,LIU Yun-peng,et al.Geostress field characteristics of high steep canyon slope in Southwest China[J].Rock and Soil Mechanics,2016,37(Supp.1):482-488.
[2]乔兰,蔡美峰.应力解除法在某金矿地应力测量中的新进展[J].岩石力学与工程学报,1995,14(1):25-32.QIAO Lan,CAI Mei-feng.New development of stress relief method for determination of in-situ stresses in a gold mine[J].Chinese Journal of Rock Mechanics and Engineering,1995,14(1):25-32.
[3]王成虎,邢博瑞.原生裂隙水压致裂原地应力测量的理论与实践新进展[J].岩土力学,2017,38(5):1289-1297.WANG Cheng-hu,XING Bo-rui.A new theory and application progress of the modified hydraulic test on pre-existing fracture to determine in-situ stresses[J].Rock and Soil Mechanics,2017,38(5):1289-1297.
[4]彭冠英,许明,谢强,等.基于岩石声发射信号的指数衰减型小波基构造[J].岩土力学,2016,37(7):1868-1877.PENG Guan-ying,XU Ming,XIE Qiang,et al.Construction of exponential attenuation wavelet basis by characteristics of rock acoustic emission[J].Rock and Soil Mechanics,2016,37(7):1868-1877.
[5]蔡美峰.地应力测量原理和方法的评述[J].岩石力学与工程学报,1993,12(3):275-283.CAI Mei-feng.Review of principles and methods for rock stress measurement[J].Chinese Journal of Rock Mechanics and Engineering,1993,12(3):275-283.
[6]蔡美峰,乔兰,李华斌.地应力测量原理和技术[M].北京:科学出版社,2000.CAI Mei-feng,QIAO Lan,LI Hua-bin.Principle and techniques of in situ stress measurement[M].Beijing:Science Press,2000.
[7]蔡美峰,乔兰,于波,等.梅山铁矿地应力测量结果及其分析[J].岩石力学与工程学报,1997,16(3):233-239.CAI Mei-feng,QIAO Lan,YU Bo,et al.Results and analysis of in-situ stress measurement in Meishan Iron Mine[J].Chinese Journal of Rock Mechanics and Engineering,1997,16(3):233-239.
[8]蔡美峰,刘卫东,李远.玲珑金矿深部地应力测量及矿区地应力场分布规律[J].岩石力学与工程学报,2010,29(2):227-233.CAI Mei-feng,LIU Wei-dong,LI Yuan.In-situ stress measurement at deep position of Linglong Gold Mine and distribution law of in-situ stress field in mine area[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(2):227-233.
[9]蔡美峰,郭奇峰,李远,等.平煤十矿地应力测量及其应用[J].北京科技大学学报,2013,35(11):1399-1406.CAI Mei-feng,GUO Qi-feng,LI Yuan,et al.In-situ stress measurement and its application in the 10th Mine of Pingdingshan Coal Group[J].Journal of University of Science and Technology Beijing,2013,35(11):1399-1406.
[10]MIAO S J,LI Y,TAN W H,et al.Relation between the in-situ stress field and geological tectonics of a gold mine area in Jiaodong Peninsula,China[J].International Journal of Rock Mechanics and Mining Sciences,2012,51(4):76-80.
[11]CAI M F,QIAO L,LI C,et al.Application of an improved hollow inclusion technique for in-situ stress measurement in Xincheng Gold Mine,China[J].International Journal of Rock Mechanics and Mining Sciences,1995,32(4):735-739.
[12]CAI M F,QIAO L,YU B,et al.Stress measurement with an improved hollow inclusion technique in Jinchuan Nickel Mine[J].Journal of University of Science and Technology Beijing,2000,7(3):157-160.
[13]李远,王卓,乔兰,等.基于双温度补偿的瞬接续采型空心包体地应力测试技术研究[J].岩石力学与工程学报,2017,36(6):1479-1487.LI Yuan,WANG Zhuo,QIAO Lan,et al.Development of CSIRO cell with the compromised application of instantaneous data-logging,no-power data-connection and twin temperature compensation techniques[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(6):1479-1487.
[14]王连捷,潘立宙,廖椿庭,等.地应力测量及其在工程中的应用[M].北京:地质出版社,1991.WANG Lian-jie,PAN Li-zhou,LIAO Chun-ting,et al.In-situ stress measurement and its application in mining engineering[M].Beijing:Geological Publishing House,1991.
[15]李立球,吕悦军,关伟沂,等.单孔压磁全应力测量法[J].岩石力学与工程学报,1996,15(1):32-39.LI Li-qiu,LüYue-jun,GUAN Wei-yi,et al.Three dimensional stress measurement in situ by piezomagnetic method in a single borehole[J].Chinese Journal of Rock Mechanics and Engineering,1996,15(1):32-39.
[16]杨小聪,王连捷.地应力测量的误差处理及精度评定[J].地质力学学报,2000,6(2):53-63.YANG Xiao-cong,WANG Lian-jie.Error processing and precision estimation for rock stress measurement[J].Journal of Geomechanics,2000,6(2):53-63.
[17]王连捷,王薇.多种方法得到的地应力测量资料的综合处理[J].中国地质科学院地质力学研究所所刊,1989,(12):159-170.WANG Lian-jie,WANG Wei.Computation of rock stress from readings by different methods of measurements[J].Bulletin of the Institute of Geomechanics CAGS,1989,(12):159-170.
[2]乔兰,蔡美峰.应力解除法在某金矿地应力测量中的新进展[J].岩石力学与工程学报,1995,14(1):25-32.QIAO Lan,CAI Mei-feng.New development of stress relief method for determination of in-situ stresses in a gold mine[J].Chinese Journal of Rock Mechanics and Engineering,1995,14(1):25-32.
[3]王成虎,邢博瑞.原生裂隙水压致裂原地应力测量的理论与实践新进展[J].岩土力学,2017,38(5):1289-1297.WANG Cheng-hu,XING Bo-rui.A new theory and application progress of the modified hydraulic test on pre-existing fracture to determine in-situ stresses[J].Rock and Soil Mechanics,2017,38(5):1289-1297.
[4]彭冠英,许明,谢强,等.基于岩石声发射信号的指数衰减型小波基构造[J].岩土力学,2016,37(7):1868-1877.PENG Guan-ying,XU Ming,XIE Qiang,et al.Construction of exponential attenuation wavelet basis by characteristics of rock acoustic emission[J].Rock and Soil Mechanics,2016,37(7):1868-1877.
[5]蔡美峰.地应力测量原理和方法的评述[J].岩石力学与工程学报,1993,12(3):275-283.CAI Mei-feng.Review of principles and methods for rock stress measurement[J].Chinese Journal of Rock Mechanics and Engineering,1993,12(3):275-283.
[6]蔡美峰,乔兰,李华斌.地应力测量原理和技术[M].北京:科学出版社,2000.CAI Mei-feng,QIAO Lan,LI Hua-bin.Principle and techniques of in situ stress measurement[M].Beijing:Science Press,2000.
[7]蔡美峰,乔兰,于波,等.梅山铁矿地应力测量结果及其分析[J].岩石力学与工程学报,1997,16(3):233-239.CAI Mei-feng,QIAO Lan,YU Bo,et al.Results and analysis of in-situ stress measurement in Meishan Iron Mine[J].Chinese Journal of Rock Mechanics and Engineering,1997,16(3):233-239.
[8]蔡美峰,刘卫东,李远.玲珑金矿深部地应力测量及矿区地应力场分布规律[J].岩石力学与工程学报,2010,29(2):227-233.CAI Mei-feng,LIU Wei-dong,LI Yuan.In-situ stress measurement at deep position of Linglong Gold Mine and distribution law of in-situ stress field in mine area[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(2):227-233.
[9]蔡美峰,郭奇峰,李远,等.平煤十矿地应力测量及其应用[J].北京科技大学学报,2013,35(11):1399-1406.CAI Mei-feng,GUO Qi-feng,LI Yuan,et al.In-situ stress measurement and its application in the 10th Mine of Pingdingshan Coal Group[J].Journal of University of Science and Technology Beijing,2013,35(11):1399-1406.
[10]MIAO S J,LI Y,TAN W H,et al.Relation between the in-situ stress field and geological tectonics of a gold mine area in Jiaodong Peninsula,China[J].International Journal of Rock Mechanics and Mining Sciences,2012,51(4):76-80.
[11]CAI M F,QIAO L,LI C,et al.Application of an improved hollow inclusion technique for in-situ stress measurement in Xincheng Gold Mine,China[J].International Journal of Rock Mechanics and Mining Sciences,1995,32(4):735-739.
[12]CAI M F,QIAO L,YU B,et al.Stress measurement with an improved hollow inclusion technique in Jinchuan Nickel Mine[J].Journal of University of Science and Technology Beijing,2000,7(3):157-160.
[13]李远,王卓,乔兰,等.基于双温度补偿的瞬接续采型空心包体地应力测试技术研究[J].岩石力学与工程学报,2017,36(6):1479-1487.LI Yuan,WANG Zhuo,QIAO Lan,et al.Development of CSIRO cell with the compromised application of instantaneous data-logging,no-power data-connection and twin temperature compensation techniques[J].Chinese Journal of Rock Mechanics and Engineering,2017,36(6):1479-1487.
[14]王连捷,潘立宙,廖椿庭,等.地应力测量及其在工程中的应用[M].北京:地质出版社,1991.WANG Lian-jie,PAN Li-zhou,LIAO Chun-ting,et al.In-situ stress measurement and its application in mining engineering[M].Beijing:Geological Publishing House,1991.
[15]李立球,吕悦军,关伟沂,等.单孔压磁全应力测量法[J].岩石力学与工程学报,1996,15(1):32-39.LI Li-qiu,LüYue-jun,GUAN Wei-yi,et al.Three dimensional stress measurement in situ by piezomagnetic method in a single borehole[J].Chinese Journal of Rock Mechanics and Engineering,1996,15(1):32-39.
[16]杨小聪,王连捷.地应力测量的误差处理及精度评定[J].地质力学学报,2000,6(2):53-63.YANG Xiao-cong,WANG Lian-jie.Error processing and precision estimation for rock stress measurement[J].Journal of Geomechanics,2000,6(2):53-63.
[17]王连捷,王薇.多种方法得到的地应力测量资料的综合处理[J].中国地质科学院地质力学研究所所刊,1989,(12):159-170.WANG Lian-jie,WANG Wei.Computation of rock stress from readings by different methods of measurements[J].Bulletin of the Institute of Geomechanics CAGS,1989,(12):159-170.