Difference of “whole-process and stages” response law of energy evolution regulated by high energy storage rock modification

Abstract

Aiming at the technical problems of regional rock burst control and disaster reduction, the indoor comparative tests of three kinds of variables are designed, involving water content, borehole diameter and borehole filling materials. This research analyzed the characteristics of the whole process of energy evolution of rock impacted by different regulation methods, and revealed the differences and applicable conditions of different regulation methods in reducing the impact mechanism. The results show that different control methods can effectively change the mechanical parameters of the target object. There are significant stage differences in the energy evolution of impact rocks. By constructing the energy conversion efficiency model, the study further elaborated on the water injection softening mechanism of "release first and then weaken", the drilling pressure relief mechanism of "guide first and then release" and the filling strengthening regulation mechanism of "release first and then absorb". The study of the optimal application conditions of different control measures provides an important basis for the regulation and disaster reduction of rock burst.

Keywords

Rock burst / In-situ modification / Regulating and reducing impact / Mechanical properties / Energy evolution

CRediT authorship contribution statement

Xingping Lai: Writing-original draft. Shuai Zhang: Writing-original draft. Jiantao Cao: Writing-review & editing. Yao Sun: Writing-review & editing. Feilong Xin: Writing-review & editing.

Conflict of interest

The authors declare no conflicts of interest regarding the publication of this article.

Acknowledgments

This study was funded by Special scientific research project of Shaanxi Provincial Department of Education (No. 24JK0545), Shaanxi Province postdoctoral research project (No. 2023BSHEDZZ313). Their support is gratefully acknowledged.

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