Journal of Yangtze River Scientific Research Institute ›› 2021, Vol. 38 ›› Issue (3): 110-114.DOI: 10.11988/ckyyb.201912482021

• ROCK-SOIL ENGINEERING • Previous Articles     Next Articles

Variation Rules of Elastic Modulus of Oil Shale during Pyrolysis

XU Xing-qian1, LIU Jian2,3,4, QU Xin5, ZHANG Xin-qi1, DOU Si-jun1   

  1. 1. College of Water Conservancy, Yunnan Agricultural University, Kunming 650201, China;
    2. Department of Geological Survey Engineering, Shanxi Institute of Energy, Jinzhong 030600, China;
    3. School of Earth Science and Engineering, Hebei University of Engineering, Handan 056038, China;
    4. Key Laboratory of In-situ Modification of Deposit Properties for Improving Mining of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China;
    5. School of Civil and Architecture Engineering, Anyang Institute of Technology, Anyang 455000, China
  • Received:2019-10-15 Revised:2020-02-29 Published:2021-03-17

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Abstract: In the aim of predicting the hydrogeological environment changes in mining area caused by in-situ pyrolysis process, we examined the variation rules of elastic modulus of oil shale by controlling the pyrolysis temperature and time. We established a quantitative model of the elastic modulus of oil shale during pyrolysis based on the pyrolysis reaction rate equation. We further compared the test values with calculation values, and results suggest that the calculated elastic modulus values from the quantitative model are in good agreement with the experimental data, with a relatively small error. The proposed quantitative model accurately estimates the elastic modulus of oil shale during pyrolysis, thus is of referential value for the simulation of porosity, permeability, and groundwater pollutant transport in oil shale in-situ pyrolysis mining area.

Key words: oil shale, pyrolysis, elastic modulus, pyrolysis temperature, quantitative model

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