大断面地下水封石油洞库储油洞室稳定性模拟
|
摘要
由于深埋地下洞室的高地应力对洞室稳定性影响很大,洞室的稳定性、耐久性对所储油品的密封极为重要,且洞室的稳定性关系到整个项目的成败。依托辽宁某真实地下水封石油洞库工程,对其稳定性进行FLAC3D数值分析,研究储油洞室在实际施工开挖工况下的稳定性,并从围岩应力和位移变形两方面研究无支护和有支护两种工况下洞室的稳定性。结果表明:储油洞室处的围岩均没有超出岩石的抗压强度,拉应力的大小和区域也满足要求。通过模拟分析得到了洞室在开挖过程中的薄弱部位,应该在设计和施工中加强支护及监控量测。研究成果为大断面地下水封石油洞库储油洞室稳定性的研究提供了理论依据。(图7,表2,参23)
The high ground stress of deep underground cavern has a great influence on its stability, the stability and endurance of a cavern is quite important for the sealing of the oil products stored in it, and its stability is crucial to the success of the whole project. In this paper, one real underground water-sealed oil storage project in Liaoning was taken as an example. Its stability was numerically analyzed by FLAC3D. The stability of the oil storage cavern in the actual working condition of excavation was analyzed. In addition, the stability of the cavern with and without support was analyzed from the aspects of surrounding rock stress and displacement deformation. It is shown that the surrounding rocks of the oil storage cavern don't exceed the compression strength of the rock and the size and region of the tensile stress satisfy the requirements. By virtue of simulation analysis, the weak positions of the cavern in the process of excavation are identified.It is suggested to strengthen the support and monitoring & measuring on these weak points during design and construction.The research results provide the theoretical basis for the studies on the stability of oil storage caverns of large-section underground water-sealed oil storages.(7 Figures, 2 Tables, 23 References)
The high ground stress of deep underground cavern has a great influence on its stability, the stability and endurance of a cavern is quite important for the sealing of the oil products stored in it, and its stability is crucial to the success of the whole project. In this paper, one real underground water-sealed oil storage project in Liaoning was taken as an example. Its stability was numerically analyzed by FLAC3D. The stability of the oil storage cavern in the actual working condition of excavation was analyzed. In addition, the stability of the cavern with and without support was analyzed from the aspects of surrounding rock stress and displacement deformation. It is shown that the surrounding rocks of the oil storage cavern don't exceed the compression strength of the rock and the size and region of the tensile stress satisfy the requirements. By virtue of simulation analysis, the weak positions of the cavern in the process of excavation are identified.It is suggested to strengthen the support and monitoring & measuring on these weak points during design and construction.The research results provide the theoretical basis for the studies on the stability of oil storage caverns of large-section underground water-sealed oil storages.(7 Figures, 2 Tables, 23 References)
引文
[1]黄润秋,黄达,段绍辉,等.锦屏I级水电站地下厂房施工期围岩变形开裂特征及地质力学机制研究[J].岩石力学与工程学报,2011,30(1):23-35.HUANG R Q,HUANG D,DUAN S H,et al.Geomechanics mechanism and characteristics of surrounding rock mass deformation failure in construction phase for underground powerhouse of Jinping I hydropower station[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(1):23-35.
[2]魏进兵,邓建辉,王俤剀,等.锦屏一级水电站地下厂房围岩变形与破坏特征分析[J].岩石力学与工程学报,2010,29(6):1198-1205.WEI J B,DENG J H,WANG D K,et al.Characterization of deformation and fracture for rock mass in underground powerhouse of Jinping I hydropower station[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(6):1198-1205.
[3]卢波,王继敏,丁秀丽,等.锦屏一级水电站地下厂房围岩开裂变形机制研究[J].岩石力学与工程学报,2010,29(12):2429-2441.LU B,WANG J M,DING X L,et al.Study of deformation and cracking mechanism of surrounding rock of Jinping Iunderground powerhouse[J].Chinese Journal of Rock mechanics and Engineering,2010,29(12):2429-2441.
[4]胡谋鹏,梁久正.地下水封石油储备库洞室间距及数值分析[J].石油工程建设,2013,39(3):17-20.HU M P,LIANG J Z.Numerical and distance analysis of underground water-sealed oil storage in rock cavern[J].Petroleum Engineering Construction,2013,39(3):17-20.
[5]胡谋鹏,梁久正,许杰.地下水封储油库围岩稳定性数值分析[J].油气储运,2013,32(4)):370-375.HU M P,LIANG J Z,XU J.Numerical analysis on the stability of surrounding rock for underground water-sealing oil storage in rock caverns[J].Oil&Gas Storage and Transportation,2013,32(4):370-375.
[6]胡谋鹏,陈雪见,梁久正,等.地下水封储油库围岩间距的FLAC3D数值分析[J].油气储运,2015,34(9):1005-1008.HU M P,CHEN X J,LIANG J Z,et al.Numerical analysis on the surrounding rock spacing of underground water-sealed oil storage based on FlAC3D[J].Oil&Gas Storage and Transportation,2015,34(9):1005-1008.
[7]EVERT H,PAUL M.Predicting tunnel squeezing problems in weak heterogeneous rock masses(Part 1)[J].Tunnels and Tunnelling International,2000,32(11):1-5.
[8]王章琼,晏鄂川,季惠斌,等.黄岛地下水封油库地应力场及地质构造作用分析[J].工程地质学报,2016,24(1):136-141.WANG Z Q,YAN E C,JI H B,et al.In-situ stress field and geological tectonic analysis at Huangdao water-sealed oil cavern site[J].Journal of Engineering Geology,2016,24(1):136-141.
[9]马耀川,潘真.地下水封石油洞库埋深优化方法[J].油气储运,2013,32(5):521-525.MA Y C,PAN Z.Method to optimize the buried depth of underground water-sealing oil storage in rock caverns[J].Oil&Gas Storage and Transportation,2013,32(5):521-525.
[10]陈育民.FLAC/FLAC3D基础与工程实例[M].北京:中国水利水电出版社,2008:28-97.CHEN Y M.FLAC/FLAC3D foundation and engineering examples[M].Beijing:China Water&Power Press,2008:28-97.
[11]陈祖煜.岩质边坡稳定分析-原理、方法、程序[M].北京:中国水利水电出版社,2005:201-243.CHEN Z Y.Rock slope stability analysis:principle,method and program[M].Beijing:China Water&Power Press,2005:201-243.
[12]李树忱,李术才,徐帮树.隧道围岩稳定分析的最小安全系数法[J].岩土力学,2007,28(3):549-554.LI S C,LI S C,XU B S.Minimum safety factor method for stability analysis of surrounding rockmass of tunnel[J].Rock and Soil Mechanics,2007,28(3):549-554.
[13]MARTIN C D,KAISER P K,MCCREATH D R.HoekBrown parameters for predicting the depth of brittle failure around tunnels[J].Canadian Geotechnical Journal,1999,36(1):136-151.
[14]邵国建,卓家寿,章青.岩体稳定性分析与评判准则研究[J].岩石力学与工程学报,2003,22(5):691-696.SHAO G J,ZHUO J S,ZHANG Q.Research on analysis method and criterion of rockmass stability[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(5):691-696.
[15]陈卫忠,朱维申,李术才.节理岩体中洞室围岩大变形数值模拟及模型试验研究[J].岩石力学与工程学报,1998,17(3):223-229.CHEN W Z,ZHU W S,LI S C.Numerical simulation and testing study of large deformation for cavern’s surrounding jointed rockmass[J].Chinese Journal of Rock Mechanics and Engineering,1998,17(3):223-229.
[16]邱祥波,李术才,李树忱.三维地应力回归分析方法与工程应用[J].岩石力学与工程学报,2003,22(10):1613-1617.QIU X B,LI S C,LI S C.3D geostress regression analysis method and its application[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(10):1613-1617.
[17]宋琨,罗关俊,高连通,等.地下石油储备库岩体力学参数研究[J].地质科技情报,2013,32(6):186-190.SONG K,LUO G J,GAO L T,et a1.Rock mass mechanical p a r a m e t e r s o f u n d e r g r o u n d o i l s t o r a g e c a v e r n s[J].Geological Science and Technology Information,2013,32(6):186-190.
[18]谭云亮,王泳嘉.巷道围岩塑性状态判定分析方法[J].工程地质学报,1996,4(2):63-68.TAN Y L,WANG Y J.Method for determining plastic state of surrounding rocks of gate[J].Journal of Engineering Geology,1996,4(2):63-68.
[19]SCHMIDTKE R H,LAJTAI E Z.The long-term strength of Lac Du Bonnet granite[J].International Journal Rock Mechanics and Mining Science and Geomechanics Abstracts,1985,22(6):461-465.
[20]LAU J S O,CHANDLER N A.Innovative laboratory testing[J].International Journal of Rock Mechanics and Mining Science,2004,41(8):1427-1445.
[21]文云波,黄锋,高啸也,等.小净距大断面偏压隧道围岩稳定性分析[J].铁道建筑,2017,7(4):77-80.WEN Y B,HUANG F,GAO X Y,et a1.Surrounding rock stability analysis for large-section tunnels with small spacing and unsymmetrical loading[J].Railway Engineering,2017,7(4):77-80.
[22]刘全林,杨敏.软弱围岩巷道锚注支护机理及其变形分析[J].岩石力学与工程学报,2002,10(8):158-163.LIU Q L,YANG M.Analysis on deformation of surrounding rock masses of tunnel using bolt-grouting support and its mechanism[J].Chinese Journal of Rock Mechanics and Engineering,2002,10(8):158-163.
[23]孙红涛.小净距隧道围岩整体稳定性的下限分析[J].公路工程,2013,38(6):213-216.SUN H T.Lower bound limit analysis on surrounding rock mass global stability of neighborhood tunnel[J].Highway Engineering,2013,38(6):213-216.
[2]魏进兵,邓建辉,王俤剀,等.锦屏一级水电站地下厂房围岩变形与破坏特征分析[J].岩石力学与工程学报,2010,29(6):1198-1205.WEI J B,DENG J H,WANG D K,et al.Characterization of deformation and fracture for rock mass in underground powerhouse of Jinping I hydropower station[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(6):1198-1205.
[3]卢波,王继敏,丁秀丽,等.锦屏一级水电站地下厂房围岩开裂变形机制研究[J].岩石力学与工程学报,2010,29(12):2429-2441.LU B,WANG J M,DING X L,et al.Study of deformation and cracking mechanism of surrounding rock of Jinping Iunderground powerhouse[J].Chinese Journal of Rock mechanics and Engineering,2010,29(12):2429-2441.
[4]胡谋鹏,梁久正.地下水封石油储备库洞室间距及数值分析[J].石油工程建设,2013,39(3):17-20.HU M P,LIANG J Z.Numerical and distance analysis of underground water-sealed oil storage in rock cavern[J].Petroleum Engineering Construction,2013,39(3):17-20.
[5]胡谋鹏,梁久正,许杰.地下水封储油库围岩稳定性数值分析[J].油气储运,2013,32(4)):370-375.HU M P,LIANG J Z,XU J.Numerical analysis on the stability of surrounding rock for underground water-sealing oil storage in rock caverns[J].Oil&Gas Storage and Transportation,2013,32(4):370-375.
[6]胡谋鹏,陈雪见,梁久正,等.地下水封储油库围岩间距的FLAC3D数值分析[J].油气储运,2015,34(9):1005-1008.HU M P,CHEN X J,LIANG J Z,et al.Numerical analysis on the surrounding rock spacing of underground water-sealed oil storage based on FlAC3D[J].Oil&Gas Storage and Transportation,2015,34(9):1005-1008.
[7]EVERT H,PAUL M.Predicting tunnel squeezing problems in weak heterogeneous rock masses(Part 1)[J].Tunnels and Tunnelling International,2000,32(11):1-5.
[8]王章琼,晏鄂川,季惠斌,等.黄岛地下水封油库地应力场及地质构造作用分析[J].工程地质学报,2016,24(1):136-141.WANG Z Q,YAN E C,JI H B,et al.In-situ stress field and geological tectonic analysis at Huangdao water-sealed oil cavern site[J].Journal of Engineering Geology,2016,24(1):136-141.
[9]马耀川,潘真.地下水封石油洞库埋深优化方法[J].油气储运,2013,32(5):521-525.MA Y C,PAN Z.Method to optimize the buried depth of underground water-sealing oil storage in rock caverns[J].Oil&Gas Storage and Transportation,2013,32(5):521-525.
[10]陈育民.FLAC/FLAC3D基础与工程实例[M].北京:中国水利水电出版社,2008:28-97.CHEN Y M.FLAC/FLAC3D foundation and engineering examples[M].Beijing:China Water&Power Press,2008:28-97.
[11]陈祖煜.岩质边坡稳定分析-原理、方法、程序[M].北京:中国水利水电出版社,2005:201-243.CHEN Z Y.Rock slope stability analysis:principle,method and program[M].Beijing:China Water&Power Press,2005:201-243.
[12]李树忱,李术才,徐帮树.隧道围岩稳定分析的最小安全系数法[J].岩土力学,2007,28(3):549-554.LI S C,LI S C,XU B S.Minimum safety factor method for stability analysis of surrounding rockmass of tunnel[J].Rock and Soil Mechanics,2007,28(3):549-554.
[13]MARTIN C D,KAISER P K,MCCREATH D R.HoekBrown parameters for predicting the depth of brittle failure around tunnels[J].Canadian Geotechnical Journal,1999,36(1):136-151.
[14]邵国建,卓家寿,章青.岩体稳定性分析与评判准则研究[J].岩石力学与工程学报,2003,22(5):691-696.SHAO G J,ZHUO J S,ZHANG Q.Research on analysis method and criterion of rockmass stability[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(5):691-696.
[15]陈卫忠,朱维申,李术才.节理岩体中洞室围岩大变形数值模拟及模型试验研究[J].岩石力学与工程学报,1998,17(3):223-229.CHEN W Z,ZHU W S,LI S C.Numerical simulation and testing study of large deformation for cavern’s surrounding jointed rockmass[J].Chinese Journal of Rock Mechanics and Engineering,1998,17(3):223-229.
[16]邱祥波,李术才,李树忱.三维地应力回归分析方法与工程应用[J].岩石力学与工程学报,2003,22(10):1613-1617.QIU X B,LI S C,LI S C.3D geostress regression analysis method and its application[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(10):1613-1617.
[17]宋琨,罗关俊,高连通,等.地下石油储备库岩体力学参数研究[J].地质科技情报,2013,32(6):186-190.SONG K,LUO G J,GAO L T,et a1.Rock mass mechanical p a r a m e t e r s o f u n d e r g r o u n d o i l s t o r a g e c a v e r n s[J].Geological Science and Technology Information,2013,32(6):186-190.
[18]谭云亮,王泳嘉.巷道围岩塑性状态判定分析方法[J].工程地质学报,1996,4(2):63-68.TAN Y L,WANG Y J.Method for determining plastic state of surrounding rocks of gate[J].Journal of Engineering Geology,1996,4(2):63-68.
[19]SCHMIDTKE R H,LAJTAI E Z.The long-term strength of Lac Du Bonnet granite[J].International Journal Rock Mechanics and Mining Science and Geomechanics Abstracts,1985,22(6):461-465.
[20]LAU J S O,CHANDLER N A.Innovative laboratory testing[J].International Journal of Rock Mechanics and Mining Science,2004,41(8):1427-1445.
[21]文云波,黄锋,高啸也,等.小净距大断面偏压隧道围岩稳定性分析[J].铁道建筑,2017,7(4):77-80.WEN Y B,HUANG F,GAO X Y,et a1.Surrounding rock stability analysis for large-section tunnels with small spacing and unsymmetrical loading[J].Railway Engineering,2017,7(4):77-80.
[22]刘全林,杨敏.软弱围岩巷道锚注支护机理及其变形分析[J].岩石力学与工程学报,2002,10(8):158-163.LIU Q L,YANG M.Analysis on deformation of surrounding rock masses of tunnel using bolt-grouting support and its mechanism[J].Chinese Journal of Rock Mechanics and Engineering,2002,10(8):158-163.
[23]孙红涛.小净距隧道围岩整体稳定性的下限分析[J].公路工程,2013,38(6):213-216.SUN H T.Lower bound limit analysis on surrounding rock mass global stability of neighborhood tunnel[J].Highway Engineering,2013,38(6):213-216.