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| PREDICTION OF SURFACE SUBSIDENCE ABOVE SALT ROCK GAS STORAGE USING MOGI MODEL |
| LI Yinping1，KONG Junfeng1，XU Yulong1，JI Wendong1，JING Wenjun1，YANG Chunhe1，2 |
| (1. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China；2. Key Laboratory for Exploitation of Southwestern Resources and Environmental Disaster Control Engineering，Ministry of Education，Chongqing University，Chongqing 400044，China) |
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Abstract The main cause of surface subsidence above salt rock gas storage is the creep contraction of salt cavern volume during operation period. Assuming that the surface subsidence caused by equivalent elastic deformation of cavern volume contraction is a first-order approximate quantity of actual subsidence induced by creep contraction，the salt cavern is transformed as the sphere cavern with the same depth and volume，bearing uniform contractive elastic equivalent surface force. Therefore，the subsidence prediction is similar to the problem of boundary deformation of the sphere cavern with shrinkage force in elastic half infinite space. The Mogi model is introduced to get the elastic analytical solution of the surface vertical and horizontal deformations，which is the most successful method to predict the deformation above volcanoes eruption. The subsidence above the salt rock gas storage could be obtained directly with the volume shrinkage，which is the main superiority of Mogi model；and the prediction result has a good approximate effect to the numerical result under the same condition. It indicates that the Mogi model has enough feasibility in salt cavern subsidence prediction. Finally，the direction and recommendation about the further research are given.
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Received: 27 April 2012
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| [1] 丁国生，张昱文. 盐穴地下储气库[M]. 北京：石油工业出版社，2010：1–4.(DING Guosheng，ZHANG Yuwen. Salt rocks underground gas storage[M]. Beijing：Petroleum Industry Press，2010：1–4.(in Chinese))
[2] BÉREST P，BROUARD B. Safety of salt caverns used for under- ground storage[J]. Oil and Gas Science and Technology，2003，58(3)：361–384.
[3] 井文君，杨春和，陈 锋，等. 基于事故统计分析的盐岩地下油/气储库风险评价[J]. 岩土力学，2011，32(6)：1 787–1 793.(JING Wenjun，YANG Chunhe，CHEN Feng，et al. Risk assessment of salt cavern oil/gas storage based on accident statistical analysis[J]. Rock and Soil Mechanics，2011，32(6)：1 787–1 793.(in Chinese))
[4] BAUER S J. Analysis of subsidence data for the Bryan Mound Site，Texas (SAND99–1739)[R]. Albuquerque：Sandia National Laboratories，1999.
[5] BAUER S J. Analysis of subsidence data for the Big Hill Site，Texas (SAND99–1478)[R]. Albuquerque：Sandia National Laboratories，1999.
[6] NEAL J T. Prediction of subsidence resulting from creep closure of solution-mined caverns in salt domes[C]// Proceedings of the 4th International Symposium on Land Subsidence. [S.l.]：LAHS Publ.，1991：225–234.
[7] BAUER S J. Analysis of subsidence data for the West Hackberry Site，Louisiana(SAND97–2036)[R]. Albuquerque：Sandia National Laboratories，1997.
[8] 屈丹安，杨春和，任 松. 金坛盐穴地下储气库地表沉降预测研究[J]. 岩石力学与工程学报，2010，29(增1)：2 705–2 711.(QU Dan?an，YANG Chunhe，REN Song. Study and prediction of surface subsidence of salt rock caverns used for gas storages in Jintan salt mine[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(Supp.1)：2 705–2 711.(in Chinese))
[9] 任 松. 岩盐水溶开采沉陷机制及预测模型研究[博士学位论文][D]. 重庆：重庆大学，2005：87–113.(REN Song. Study on the mechanism and the prediction model of the subsidence caused by rock salt solution mining[Ph. D. Thesis][D]. Chongqing：Chongqing University，2005：87–113.(in Chinese))
[10] 任 松，姜德义，杨春和，等. 岩盐水溶开采沉陷新概率积分三维预测模型研究[J]. 岩土力学，2007，28(1)：133–138.(REN Song，JIANG Deyi，YANG Chunhe，et al. Study on a new probability integral 3D model for forecasting solution mining subsidence of rock salt[J]. Rock and Soil Mechanics，2007，28(1)：133–138.(in Chinese))
[11] REITZE A J，TRYLLER H V. Subsidence above cavities—theoretical principles and practical experience[C]// Proceedings of Solution Mining Research Institute(SMRI) Fall 1996 Technical Meeting. Cleveland Ohio，USA：Solution Mining Research Institute(SMRI)，1996：1–13.
[12] EICKEMEIER R. A new model to predict subsidence above brine fields[C]// Proceedings of Solution Mining Research Institute(SMRI) Fall 2005 Technical Meeting. Nancy，France：Solution Mining Research Institute(SMRI)，2005：1–20.
[13] 王同涛，闫相帧，杨秀娟，等. 考虑盐岩蠕变的盐穴储气库地表动态沉降量预测[J]. 中国科学：技术科学，2011，41(5)：687–692. (WANG Tongtao，YAN Xiangzhen，YANG Xiujuan，et al. Dynamic subsidence prediction of ground surface above salt cavern gas storage considering the creep of rock salt[J]. Scientia Sinica：Technologica，2011，41(5)：687–692.(in Chinese))
[14] YAMAKAWA N. On the strain produced in a semi-infinite elastic solid by an interior source of stress[J]. Journal of the Seismological Society of Japan，1955，8：84–98.
[15] MOGI K. Relation between the eruption of various volcanoes and the deformation of the ground surface around them[J]. Bulletin of the Earthquake Research Institute，1958，36：99–134.
[16] 胡亚轩，施行觉，王庆良，等. 腾冲火山区地表垂直形变分析[J]. 大地测量与地球动力学，2003，23(2)：37–41.(HU Yaxuan，SHI Xingjue，WANG Qingliang，et al. Analysis of vertical deformation in Tengchong volvanic area[J]. Journal of Geodesy and Geodynamics，2003，23(2)：37–41.(in Chinese))
[17] 李玉锁，修济刚，李继泰，等. 火山喷发机制与预报[M]. 北京：地震出版社，1998：83–84.(LI Yusuo，XIU Jigang，LI Jitai，et al. Volcano eruption mechanism and forecast[M]. Beijing：Earthquake Press，1998：83–84.(in Chinese))
[18] 陈国浒. 长白山天池火山形变监测与模拟研究[硕士学位论文][D]. 北京：中国地震局地质研究所，2007：52–57.(CHEN Guhu. Deformation monitoring and simulation research of Mt. Changbai Tianchi Volcano[M. S. Thesis][D]. Beijing：Institute of Geology，China Earthquake Administrations，2007：52–57.(in Chinese))
[19] SCARPA R，TILLING R I. 火山监测与减灾[M]. 刘若新，洪汉净译. 北京：地震出版社，2001：285–303.(SCARPA R，TILLING R I. Monitoring and mitigation of volcano hazards[M]. Translated by LIU Ruoxin，HONG Hanjing. Beijing：Earthquake Press，2001：285–303.(in Chinese))
[20] LISOWSKI M. Analytical volcano deformation source models[C]// DZURISIN D ed. Volcano Deformation. Berlin：Springer，2006：279–304.
[21] BÉREST P，BERGUES J，BROUARD B，et al. A salt cavern abandonment test[J]. International Journal of Rock Mechanics and Mining Sciences，2001，38(3)：357–368. |
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2012, Vol. 31 
