煤炭工程 ›› 2017, Vol. 49 ›› Issue (10): 115-118.doi: 10.11799/ce201710030

• 研究探讨 • 上一篇    下一篇

基于突变理论的冲击地压危险性预测研究

郭延华,乔趁   

  1. 河北工程大学土木工程学院
  • 收稿日期:2017-05-31 修回日期:2017-08-17 出版日期:2017-10-25 发布日期:2018-03-22
  • 通讯作者: 郭延华 E-mail:gyh7263@163.com

Study on prediction of rock burst based on catastrophe theory

  • Received:2017-05-31 Revised:2017-08-17 Online:2017-10-25 Published:2018-03-22

摘要: 深部煤岩开采改变了原岩状态,围岩自稳调整过程中产生应力集中,极易发生冲击地压,给矿山安全生产带来极大威胁。本文以某煤矿工程为例,在现场取样、实验室常规试验鉴定煤层冲击倾向的基础上,从能量转换的角度出发,通过功能平衡关系建立了煤岩系统发生冲击地压危险的折迭突变模型,导出了预测冲击地压发生的判据准则。结果表明,该煤矿具有强冲击倾向性,当煤岩系统参数K<1时,有发生冲击地压的危险。

Abstract: The mechanical mining disturbance of coal rock changes the original stable state of the original rock. The stress concentration in the process of rock slope self adjustment is very easy to cause rock burst and bring great threat to mine safety production. This paper takes a coal mine project as an example, on the basis of laboratory routine test, the impact tendency of coal seam is determined. From the viewpoint of energy conversion, the equilibrium relation of work and energy increment is established the system of coal and rock fold catastrophe model of rock burst, and criteria for predicting rock burst occurrence are derived. The result shows that the coal mine has strong rock burst tendency, and when coal and rock system parameters K<1, rock burst will occur. Combined with the actual situation of the coal mine, measures for preventing rock burst are put forward.

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