Volume 46 Issue 1
Feb.  2018
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ZHANG Fan, MA Geng, TAO Yunqi, LIU Xiao, FENG Dan, LI Rui. Proportioning experiment of similar material for coal and rock model test[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(1): 119-124. DOI: 10.3969/j.issn.1001-1986.2018.01.021
Citation: ZHANG Fan, MA Geng, TAO Yunqi, LIU Xiao, FENG Dan, LI Rui. Proportioning experiment of similar material for coal and rock model test[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(1): 119-124. DOI: 10.3969/j.issn.1001-1986.2018.01.021
shu

Proportioning experiment of similar material for coal and rock model test

  • 1. School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China;

  • 2. Research Institute of Henan Energy Resource and Chemical Industry Group Co., Ltd., Zhengzhou 450046, China;

  • 3. Henan Engineering Research Center of Simultaneous Extraction of Coal and Gas of & Outburst-prone Coal Seam with Low Permeability, Zhengzhou 450046, China;

  • 4. State Key Laboratory for Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400044, China;

  • 5. Applied Technical College, China University of Mining and Technology, Xuzhou 221008, China

Funds: 

Innovative Talent Team Construction Project of Science and Technology of Henan Province(1641005 10024)

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  • Received Date: April 05, 17
  • Published Date: February 24, 2018
    Graphical Abstract
    • Abstract
  • The similarity model test is one of the important means to study the law of hydraulic fracture propagation in coal and rock mass, the efficiency of test result depends on the selection and ratio of similar materials. In order to conduct hydraulic fracturing simulation experiment, according to the mechanical properties of raw coal, a proportioning test of similar materials was carried out by means of orthogonal designed method and a suitable similar material model for hydraulic fracturing experiment was developed. Cement and gypsum were selected as binder, coal powder was applied to the aggregate through comparative analysis. The uniaxial compressive strength, elastic modulus, Poisson's ratio and consistent coefficient of similar materials were determined through a series of laboratory tests. The mechanical properties of raw coal and similar materials were analyzed and the effect of different ratios on the mechanical properties of similar materials was studied systematically. The results showed that the mechanical properties of similar materials can meet the requirements of similar model test of coal and rock. The results of the study can provide reference for the selection of similar materials in hydraulic fracturing simulation experiment.
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    • References (17)
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