›› 2009, Vol. 30 ›› Issue (12): 3627-3632.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Distribution and structural fabric features of mudstone interlayer of rock salt in underground gas storage

LIU Yan-hui1, 2, LI Xiao1, LI Shou-ding1, HE Jian-ming1   

  1. LIU Yan-hui1, 2, LI Xiao1, LI Shou-ding1, HE Jian-ming1 (1.Key Laboratory of Engineering Geomechanics, Institute of Geology and Geophysics，Chinese Academy of Sciences, Beijing 100029, China; 2. China Institute for Geo-Environment Monitoring, Beijing 100081, China
  • Received:2008-08-10 Online:2009-12-10 Published:2010-01-18

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Abstract:

Taking the Jintan rock salt gas storage in Jiangsu Province of China for example, regional tectonic and engineering geologic setting are analyzed. The mineral form, fine composing and hydrophilicity of mudstone interlayer between rock salt are studied by XRD test, granularity test and slaking test. The results are as follows. Mudstone interlayer are composed by interbedded mudstone and inter mudstone of rock salt. Interbedded mudstone of rock salt is thick with connected distribution. Inter mudstone of rock salt is thin with disconnected distribution. Clay is the main mineral of interbedded mudstone of rock salt. The illites/smectite mixed-layer mineral is the main formation of clay in interbedded mudstone. Granule particle is main in interbedded mudstone. Interbedded mudstone slakes by stratification bedding and little expansion. The character of interbedded mudstone affect the safety and running of Jintan gas storage.

Key words: underground gas storage, mudstone interlayer, distribution, structural fabric features

CLC Number: 

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