COAL ENGINEERING ›› 2018, Vol. 50 ›› Issue (3): 131-133.doi: 10.11799/ce201803033

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Experimental Study on Simulation Materials and Matches of Coal

  

  • Received:2017-04-06 Revised:2017-05-08 Online:2018-03-20 Published:2018-04-26
  • Contact: wang yixian E-mail:56653648@qq.com

Abstract: Laboratory simulation blasting using simulating materials is a common means of coal blasting test. Based on the study on the physical mechanics properties of coal, the paper summarized the physical mechanics parameters of typical coal (hard coal an medium hard coal). The experiment, by employing 9 groups, 118 pieces of samples which were composed of ordinary building materials, tested the porosity, wave velocity,densityand stress-strain curve respectively after 28 days standard curing. By comparing to the typical properties of coal ,some influence factors and laws of different materials on the properties of simulation coal were summarized and two kinds of material combinations and its mixing ratio were confirmed to simulate hard coal and medium hard coal respectively. This research findings could be applied to the further study on blasting fracture mechanism and gas desorption law in coal.

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