Geostress Measurement Accuracy and Its Extensive Quantitative Characterization

HAN Xiao-yu; WU Ai-qing; XU Chun-min

doi:10.11988/ckyyb.20200461

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Journal of Changjiang River Scientific Research Institute ›› 2021, Vol. 38 ›› Issue (8) : 84-90. DOI: 10.11988/ckyyb.20200461

ROCK-SOIL ENGINEERING

Geostress Measurement Accuracy and Its Extensive Quantitative Characterization

HAN Xiao-yu, WU Ai-qing, XU Chun-min

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Abstract

In this paper we studied the definition and extensive characterization of geostress measurement accuracy in view of the present situation of the research field. First of all, we reviewed the geostress measurement methods, commonly used techniques, and the problems in measurement accuracy as well as their causes. From the perspective of closed-loop measurement, we gave our definitions of geostress measurement and geostress measurement accuracy. On the basis of classifying and summarizing historic researches, we presented the composition and structure of a characterization system for geostress measurement accuracy, expounded the significance of accuracy research, the difference between measurement method and measurement technology, as well as the accuracy problems. Furthermore, we presented the idea and connotations of quantitatively characterizing all factors of geostress measurement accuracy and gave the 3D physical model test device for measurement accuracy and its coordinate setting and characterization program. We also introduced the characterization formulae of all factors which include indexes of average-mode and maximum-mode in 2D and 3D measurement. In addition, we discussed the method of calculating angle error and explained the relationship between characterization modes and technical requirements. Taking the example of characterizing the measurement accuracy of the physical model test results of USBM borehole deformation gauge and CSIRO hollow inclusion strain gauge, we demonstrated the process of our extensive quantitative characterization. By comparing the characterization indexes with the original ones, we found that the overall measurement error of the single index of the maximum-mode of USBM and CSIRO is 10% and 27%, respectively. By using the present extensive characterizing method in consideration of all factors, we found that the measurement accuracy of USBM is superior to that of CSIRO.

Key words

geostress / measurement accuracy / magnitude error / angle error / single index / USBM borehole deformation gauge / CSIRO hollow inclusion strain gauge

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HAN Xiao-yu, WU Ai-qing, XU Chun-min. Geostress Measurement Accuracy and Its Extensive Quantitative Characterization[J]. Journal of Changjiang River Scientific Research Institute. 2021, 38(8): 84-90 https://doi.org/10.11988/ckyyb.20200461

References

[1] 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, 1995.
[2] 张重远,吴满路,陈群策,等.地应力测量方法综述[J].河南理工大学学报(自然科学版),2012,31(3):305-310.
[3] CAI M, PENG H. Advance of In-situ Stress Measurement in China[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2011, 3: 373-384.
[4] CORTHESY R, HE G , GILL D E, et al. A Stress Calculation Model for the 3D Borehole Slotter[J]. International Journal of Rock Mechanics and Mining Sciences, 1999, 36(4):493-508.
[5] 葛修润,侯明勋.三维地应力BWSRM测量新方法及其测井机器人在重大工程中的应用[J].岩石力学与工程学报, 2011, 30(11): 2161-2180.
[6] SJÖBERG J, KLASSON H. Stress Measurements in Deep Boreholes Using the Borre(SSPB) Probe[J]. International Journal of Rock Mechanics and Mining Sciences, 2003, 40(7):1205-1223.
[7] 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量技术研究[J]. 岩石力学与工程学报, 2017,36(6): 1479-1487.
[8] HAIMSION B C, CORNET F H. ISRM Suggested Methods for Rock Stress Estimation-Part 3: Hydraulic Fracturing(HF) and/or Hydraulic Tests of Pre-existing Fractures(HTPF)[J]. International Journal of Rock Mechanics Mining Sciences, 2003, 40(7): 991-998.
[9] SJOBERG J, CHRISTIANSSON R, HUDSON J A. ISRM Suggested Methods for Rock Stress Estimation—Part 2: Overcoring Methods[J]. International Journal of Rock Mechanics Mining Sciences, 2003, 40(7): 999-1010.
[10]ASTM D4645-08, Standard Test Method for Determination of In-situ Stress in Rock Using Hydraulic Fracturing Method[S]. West Conshohocken: ASTM International, 2008.
[11]GB/T 50266—2013, 工程岩体试验方法标准[S]. 北京:中国计划出版社, 2003.
[12]SL 264—2001, 水利水电工程岩石试验规程 [S]. 北京:中国水利水电出版社, 2001.
[13]ITO T, IGARASHI A, KATO H,et al. Crucial Effect of System Compliance on the Maximum Stress Estimation in the Hydrofracturing Method: Theoretical Considerations and Field-Test Verification[J]. Earth Planets Space, 2006, 58: 963-971.
[14]韩晓玉.地应力套心解除法测量精度的校验方法研究[J].地下空间与工程学报,2019,15(1):256-261.
[15]韩晓玉,刘元坤,尹健民,等.空心包体介质参数对应变片变形和测量精度的影响分析[J].长江科学院院报,2020,37(3):144-149,161.
[16]GB/T 6379—2004,测量方法与结果的准确度(正确度与精密度)[S]. 北京:中国标准出版社, 2004.
[17]蔡美峰.不同岩石条件下地应力解除测量技术可靠性的试验研究[J].岩石力学与工程学报,1991(4):339-353.
[18]乔兰,张亦海,孔令鹏,等.基于分段解除的深部空心包体应变计中非线性优化算法[J].煤炭学报,2019,44(5):1306-1313.
[19]FAIRHURST C. Measurement of in situ Rock Stresses, with Particular Reference to Hydraulic Fracturing[J]. Rock Mechanics and Rock Engineering,1964, 2: 129-175.
[20]HAIMSON B C. The Hydrofracturing Stress Measuring Method and Recent Field Results[J]. International Journal of Rock Mechanics and Mining Sciences, 1978,15: 167-178.
[21]刘建中,刘翔鹗,张雪,等.大尺度水压致裂模拟实验[J].地球物理学报, 1994, 37(增刊1):161-169.
[22]刘允芳.水压致裂法地应力测量的校核和修正[J].岩石力学与工程学报,1998(3):297-304.
[23]王成虎,宋成科,邢博瑞.水压致裂应力测量系统柔性分析及其对深孔测量的影响[J].现代地质, 2012, 26(4): 808-816.
[24]FRASH L P, GUTIERREZ M, HAMPTON J. True-triaxial Apparatus for Simulation of Hydraulically Fractured Multi-borehole Hot Dry Rock Reservoirs[J]. International Journal of Rock Mechanics and Mining Sciences, 2014, 70:496-506.
[25]尹光志, 李铭辉, 许江, 等. 多功能真三轴流固耦合试验系统的研制与应用[J]. 岩石力学与工程学报, 2015, 34(12):2436-2445.
[26]韩晓玉, 刘元坤, 邬爱清,等. 解除应力测量法测量精度的校验装置及方法:中国,ZL 201710706939.3[P].2018-06-29.
[27]CAI M, QIAO L, LI C, et al. Results of in situ Stress Measurements and Their Application to Mining Design at Five Chinese Metal Mines[J]. International Journal of Rock Mechanics and Mining Sciences, 2000, 37(3):509-515.