Coal Engineering ›› 2022, Vol. 54 ›› Issue (12): 142-147.doi: 10.11799/ce202212025

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Experimental study on feedback information of rock structure vibration based on drilling simulation system

zhang hongwei   

  • Received:2022-05-17 Revised:2022-09-15 Online:2022-12-14 Published:2023-02-06
  • Contact: zhang hongwei E-mail:zhw123022@163.com

Abstract: The solution to the roof problem cannot be separated from the peep exploration of the roof rock structure. Based on the drilling simulation system with multi-parameter and multi-angle identification of roof structure, this paper conducts drilling simulation tests on different characteristic rocks. The main influencing factors in the process of drilling and rock breaking and the energy loss in the process of drilling were studied and analyzed. The specific work of rock breaking per unit volume was deduced, and the method of fitting with the compressive strength of rock as the identification parameter was proposed. The qualitative relationship between the drilling parameters and the relationship between the specific work of rock breaking per unit volume η and the compressive strength were explored through the simulation test.

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