JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI ›› 2018, Vol. 35 ›› Issue (8): 151-153.DOI: 10.11988/ckyyb.20180470

• TECHNOLOGY FOR UNDERGROUND WATER-SEALED CAVERN OFZHANJIANG NATIONAL CRUDE OIL STORAGE PROJECT • Previous Articles     Next Articles

Influence of the Distance Between Fault Fracture Zone and Cavern on the Stability of Underground Water-sealed Oil Storage Cavern

LIU Peng1,ZHAO Qing2,CHEN Yi-lei3,JIN Wu3   

  1. 1.Power China Zhongnan Engineering Corporation Limited, Changsha 410014, China;
    2.Wuhan Changjiang Kechuang Technology Development Co., Ltd., Yangtze River Scientific Research Institute, Wuhan 430010, China;
    3.Sichuan Zhongliang Construction Engineering Co., Ltd., Chengdu 610094, China
  • Received:2018-05-08 Online:2018-08-01 Published:2018-08-14

Abstract: Underground water-sealed caverns are usually excavated in granite and other hard rock masses where defective geological structures such as faults and joints develop well. In an attempt to investigate into the influence of fault fracture zone on the stability of underground cavern, we examined the displacements of surrounding rock and typical sections in FLAC3D with varying distance between fault fracture zone and cavern. The conclusions are as follows: (1) The location of fault fracture zone has great influence on the stability of surrounding rock of adjacent side wall, but has little influence on the stability of surrounding rock of distant side wall; (2) When the distance between fault fracture zone and cavern exceeds half of the cavern span, the influence of fault fracture zone on the stability of surrounding rock can be neglected. The conclusions are of guiding importance for determining the safe distance and selecting the location of such caverns.

Key words: underground water-sealed oil storage cavern, fault fracture zone, FLAC3D, surrounding rock stability, numerical simulation

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