水压致裂法地应力测量的数值模拟
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摘要
由于测量深度深及其他突出优点,水压致裂法在地应力测量中已在国内外得到了广泛使用。基于大型通用有限元软件平台Abaqus,建立了二维应力-损伤演化模型,对不同水压及初始裂隙下的多工况进行数值模拟试验,并与理论解进行比较以验证数值模拟结果的可靠性。分析结果表明:数值模拟试验的裂纹开展方位、致裂压力最小值与理论解吻合;初始裂隙的存在将影响致裂最小水压力值和裂纹扩展方向及模式,其结果可对原位地应力测试和水压致裂工程设计提供借鉴和指导。
Hydraulic fracturing as a technique of geostress measurement has been widely used both at home and abroad due to its many outstanding merits.Based on the universal finite element software Abaqus,a 2D stress-damage planar model with different hydraulic and native fissure has been created,its reliability is verified by comparing the numerical simulation results with theoretical solutions.The analysis results show that the crack orientation and the minimum pressure are in accordance with theoretical results.The rock's fissures will affect the minimum fracturing pressure,the crack direction and its extension mode.This study is a valuable guide to geostress measurement and hydraulic fracturing design.
Hydraulic fracturing as a technique of geostress measurement has been widely used both at home and abroad due to its many outstanding merits.Based on the universal finite element software Abaqus,a 2D stress-damage planar model with different hydraulic and native fissure has been created,its reliability is verified by comparing the numerical simulation results with theoretical solutions.The analysis results show that the crack orientation and the minimum pressure are in accordance with theoretical results.The rock's fissures will affect the minimum fracturing pressure,the crack direction and its extension mode.This study is a valuable guide to geostress measurement and hydraulic fracturing design.
引文
[1]Hubbert M K,Willis D G..Mechanics of hydraulicfracturing[J].Trans.AIME,1957,210(2):153-166.
[2]Haimson B C.The hydrofracturing stress measuringmethod and recent results[J].Int.J.Rock Mech.Sci.&Geomeh.Abstr.1978,15(2):167-178.
[3]李方全.谈谈水压致裂法[J].地震战线,1980,2(6):14-21.(Li Fangquan.Discussion of hydrofractur-ing method[J].Earthquake Front,1980,2(6):14-21.(in Chinese))
[4]ISRM.Suggested methods for rock stress determination.Int[J].Rock Mech.Min.Sci.&Geomech.Abstr.,1987,24(1):65-73.
[5]王建军.应用水压致裂法测量三维地应力存在的几个问题[J].岩石力学与工程学报,2000,19(2):229-233.(Wang Jianjun.Several problems in applica-tion of hydraulic fracturing method to in-situ 3-D stressmeasurement[J].Chinese Journal of Rock Mechanicsand Engineering,2000,19(2):229-233.(in Chi-nese))
[6]刘允芳,刘元坤.单钻孔中水压致裂法三维地应力测量的新进展[J].岩石力学与工程学报,2006,25(2):3 816-3 822.(Liu Yunfang,Liu Yuankun.Newadvanced in 3D geostress measurement by hydraulicfracturing technique in one borehole[J].Chinese Jour-nal of Rock Mechanics and Engineering,2006,25(2):3 816-3 822.(in Chinese))
[7]尹健民,刘元坤,艾凯,等.香港排污隧道工程水压致裂法地应力测量研究[J].地下空间与工程学报,2006,2(6):891-894.(Yin Jianmin;Liu Yuankun;AiKai,et al.Hydrofracturing in-situ stress measurementand analysis for drainage tunnel project in Hong KongIsland[J].Chinese Journal of Underground Space andEngineering,2006,2(6):891-894.(in Chinese))
[8]唐安春,赵文.岩石破裂全过程分析软件系统RF-PA2D[J].岩石力学与工程学报,1997,16(5):507-508.(Tang Chunan,Zhao Wen.RFPA2D system forrock failure process analysis[J].Chinese Journal ofRock Mechanics and Engineering,1997,16(5):507-508.(in Chinese))
[9]王元汉,苗雨,李银平.预制裂纹岩石压剪试验的数值模拟分析[J].岩石力学与工程学报,2004,23(18):3 113-3 116.(Wang Yuanhan,Miao Yu,LiYinping.Numerical simulation of the experiment onrock with preexisted cracks under compression andshearing[J].Chinese Journal of Rock Mechanics andEngineering,2004,23(18):3 113-3 116.(in Chi-nese))
[10]杨天鸿,于庆磊,王善勇,等.荷载和水压力作用下岩石裂纹贯通过程的数值模拟研究[J].岩石力学与工程学报,2005,24(1):5026-5030.(YangTianhong,Yu Qinglei,Wang Shanyong,et al.Study oncrack coalescence process under loading and hydraulicpressures[J].Chinese Journal of Rock Mechanics andEngineering,2005,24(1):5 026-5 030.(in Chi-nese))
[11]杨天鸿,唐春安,刘红元,等.水压致裂过程分析的数值试验方法[J].力学与实践,2001,23(5):51-54.(Yang Tianhong,Tang Chunan,Liu Hongyuan,etal.Numerical tests of progressive failure in hydraulicfracturing[J].Mechanics in Engineering,2001,23(5):51-54.(in Chinese))
[12]李连崇,杨天鸿,唐春安,等.岩石水压致裂过程的耦合分析[J].岩石力学与工程学报,2003,22(7):1 060-1 066.(Li Lianchong,Yang Tianhong,TangChunan,et al.Coupling analysis on hydraulic fracturingprocess of rock[J].Chinese Journal of Rock Mechanicsand Engineering,2003,22(7):1 060-1 066.(in Chi-nese))
[13]冷雪峰,唐春安,杨天鸿,等.岩石水压致裂过程的数值模拟分析[J].东北大学学报,2002,23(11):1 104-1 107.(Leng Xuefeng,Tang Chunan,YangTianhong,et al.Numerical simulation and analysis onheterogeneous and permeable rocks under hydraulic frac-turing[J].Journal of Northeastern University(NaturalScience)2001,23(11):1 104-1 107.(in Chinese))
[14]李根,唐春安,李连崇,等.水压致裂过程的三维数值模拟研究[J].岩土工程学报,2010,32(12):1 875-1 881.(Li Gen,Tang Chunan,Li Lianchong,etal.Numerical simulation of 3D hydraulic fracturingprocess[J].Chinese Journal of Geotechnical Engineer-ing,2010,32(12):1 875-1 881.(in Chinese))
[15]石亦平,周玉蓉.ABAQUS有限元分析实例详解[M].北京:机械工业出版社,2006.(Shi Yiping,Zhou Yurong.Some 4xamples analyzing based onABAQUS[M].Beijing:China Machine Press,2006.(in Chinese))
[16]曹金凤,石亦平.ABAQUS有限元分析-常见问题解答[M].北京:机械工业出版社,2009.(Cao Jinfeng,Shi Yiping.ABAQUS finite analysis-frequently askedquestions and answers[M].Beijing:China MachinePress,2009.(in Chinese))
[17]贺嘉,陈国兴.基于ABAQUS软件的大直径桩承载力-变形分析[J].地下空间与工程学报,2007,3(2):306-310.(He Jia;Chen Guoxing.Analysis ofbearing capacity-deformation of the large diameter pileby The ABAQUS Software[J].Chinese Journal of Un-derground Space and Engineering,2007,3(2):306-310.(in Chinese))
[2]Haimson B C.The hydrofracturing stress measuringmethod and recent results[J].Int.J.Rock Mech.Sci.&Geomeh.Abstr.1978,15(2):167-178.
[3]李方全.谈谈水压致裂法[J].地震战线,1980,2(6):14-21.(Li Fangquan.Discussion of hydrofractur-ing method[J].Earthquake Front,1980,2(6):14-21.(in Chinese))
[4]ISRM.Suggested methods for rock stress determination.Int[J].Rock Mech.Min.Sci.&Geomech.Abstr.,1987,24(1):65-73.
[5]王建军.应用水压致裂法测量三维地应力存在的几个问题[J].岩石力学与工程学报,2000,19(2):229-233.(Wang Jianjun.Several problems in applica-tion of hydraulic fracturing method to in-situ 3-D stressmeasurement[J].Chinese Journal of Rock Mechanicsand Engineering,2000,19(2):229-233.(in Chi-nese))
[6]刘允芳,刘元坤.单钻孔中水压致裂法三维地应力测量的新进展[J].岩石力学与工程学报,2006,25(2):3 816-3 822.(Liu Yunfang,Liu Yuankun.Newadvanced in 3D geostress measurement by hydraulicfracturing technique in one borehole[J].Chinese Jour-nal of Rock Mechanics and Engineering,2006,25(2):3 816-3 822.(in Chinese))
[7]尹健民,刘元坤,艾凯,等.香港排污隧道工程水压致裂法地应力测量研究[J].地下空间与工程学报,2006,2(6):891-894.(Yin Jianmin;Liu Yuankun;AiKai,et al.Hydrofracturing in-situ stress measurementand analysis for drainage tunnel project in Hong KongIsland[J].Chinese Journal of Underground Space andEngineering,2006,2(6):891-894.(in Chinese))
[8]唐安春,赵文.岩石破裂全过程分析软件系统RF-PA2D[J].岩石力学与工程学报,1997,16(5):507-508.(Tang Chunan,Zhao Wen.RFPA2D system forrock failure process analysis[J].Chinese Journal ofRock Mechanics and Engineering,1997,16(5):507-508.(in Chinese))
[9]王元汉,苗雨,李银平.预制裂纹岩石压剪试验的数值模拟分析[J].岩石力学与工程学报,2004,23(18):3 113-3 116.(Wang Yuanhan,Miao Yu,LiYinping.Numerical simulation of the experiment onrock with preexisted cracks under compression andshearing[J].Chinese Journal of Rock Mechanics andEngineering,2004,23(18):3 113-3 116.(in Chi-nese))
[10]杨天鸿,于庆磊,王善勇,等.荷载和水压力作用下岩石裂纹贯通过程的数值模拟研究[J].岩石力学与工程学报,2005,24(1):5026-5030.(YangTianhong,Yu Qinglei,Wang Shanyong,et al.Study oncrack coalescence process under loading and hydraulicpressures[J].Chinese Journal of Rock Mechanics andEngineering,2005,24(1):5 026-5 030.(in Chi-nese))
[11]杨天鸿,唐春安,刘红元,等.水压致裂过程分析的数值试验方法[J].力学与实践,2001,23(5):51-54.(Yang Tianhong,Tang Chunan,Liu Hongyuan,etal.Numerical tests of progressive failure in hydraulicfracturing[J].Mechanics in Engineering,2001,23(5):51-54.(in Chinese))
[12]李连崇,杨天鸿,唐春安,等.岩石水压致裂过程的耦合分析[J].岩石力学与工程学报,2003,22(7):1 060-1 066.(Li Lianchong,Yang Tianhong,TangChunan,et al.Coupling analysis on hydraulic fracturingprocess of rock[J].Chinese Journal of Rock Mechanicsand Engineering,2003,22(7):1 060-1 066.(in Chi-nese))
[13]冷雪峰,唐春安,杨天鸿,等.岩石水压致裂过程的数值模拟分析[J].东北大学学报,2002,23(11):1 104-1 107.(Leng Xuefeng,Tang Chunan,YangTianhong,et al.Numerical simulation and analysis onheterogeneous and permeable rocks under hydraulic frac-turing[J].Journal of Northeastern University(NaturalScience)2001,23(11):1 104-1 107.(in Chinese))
[14]李根,唐春安,李连崇,等.水压致裂过程的三维数值模拟研究[J].岩土工程学报,2010,32(12):1 875-1 881.(Li Gen,Tang Chunan,Li Lianchong,etal.Numerical simulation of 3D hydraulic fracturingprocess[J].Chinese Journal of Geotechnical Engineer-ing,2010,32(12):1 875-1 881.(in Chinese))
[15]石亦平,周玉蓉.ABAQUS有限元分析实例详解[M].北京:机械工业出版社,2006.(Shi Yiping,Zhou Yurong.Some 4xamples analyzing based onABAQUS[M].Beijing:China Machine Press,2006.(in Chinese))
[16]曹金凤,石亦平.ABAQUS有限元分析-常见问题解答[M].北京:机械工业出版社,2009.(Cao Jinfeng,Shi Yiping.ABAQUS finite analysis-frequently askedquestions and answers[M].Beijing:China MachinePress,2009.(in Chinese))
[17]贺嘉,陈国兴.基于ABAQUS软件的大直径桩承载力-变形分析[J].地下空间与工程学报,2007,3(2):306-310.(He Jia;Chen Guoxing.Analysis ofbearing capacity-deformation of the large diameter pileby The ABAQUS Software[J].Chinese Journal of Un-derground Space and Engineering,2007,3(2):306-310.(in Chinese))
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