Time-dependent subsidence prediction model and influence factor analysis for underground gas storages in bedded salt formations
作者: Guimin ZhangYu WuLijuan WangKai ZhangJaak J.K. DaemenWei Liu
作者单位: 1State Key Laboratory for Geomechanics & Deep Underground Engineering, China University of Mining & Technology, Xuzhou, Jiangsu 221116, China
2School of Geodesy and Geomatus, Jiangsu Normal University, Jiangsu 221116, China
3Mackay School of Earth Sciences and Engineering, University of Nevada, Reno, NV, USA
4State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
刊名: Engineering Geology, 2015, Vol.187 , pp.156-169
来源数据库: Elsevier Journal
DOI: 10.1016/j.enggeo.2015.01.003
关键词: Underground gas storages in bedded salt formationsImpurity and creepTime-dependent surface subsidenceSolution and operationInfluence factorsNumerical modeling
原始语种摘要: Abstract(#br)Taking into account the impurity and creep of rock salt, a new model is proposed to predict the time-dependent subsidence of the surface above underground gas storage caverns in bedded salt formations. In this model, the shape of the storage cavern is assumed to be a sphere. Formulae are developed for the volume and volume reduction of the cavern over time during both the construction and the operating periods. A probability integral method is adopted to determine the shape of the subsidence regions, and corresponding formulae are derived for the time-dependent surface subsidence, radial tilt and radial curvature. FLAC3D was used to verify the proposed prediction model. Using the proposed model, parametric analyses are carried out to study the influences of draw angle, volume...
全文获取路径: Elsevier  (合作)
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影响因子:1.403 (2012)

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