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Shock and Vibration
Volume 2015 (2015), Article ID 286097, 8 pages
http://dx.doi.org/10.1155/2015/286097
Research Article

Study on Shale’s Dynamic Damage Constitutive Model Based on Statistical Distribution

1State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China
2School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China

Received 11 January 2015; Accepted 2 April 2015

Academic Editor: Mohammad Elahinia

Copyright © 2015 Jianjun Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The dynamic constitutive model of shale is basic for shale gas reservoir reforming. In order to investigate the dynamic mechanism of shale, a new dynamic damage constitutive model of shale under uniaxial impact load was established based on the statistical damage theory and the laboratory test results of deformation and the damage characteristics under the action of SHPB impact. Compared with the theoretical results, the model can describe shale’s mechanical attributes and reveal the fracture damage mechanism as well. The results will provide theoretical basis for hydraulic fracturing on shale and other dynamic reforming technics.