Dynamic Ground Support in Underground Mines
1China University of Mining & Technology, Xuzhou, China
2Central South University, Changsha, China
3The University of New South Wales, Sydney, Australia
4AGH University of Science and Technology, Kraków, Poland
Dynamic Ground Support in Underground Mines
Description
Although in recent years many new types of support components and materials have been developed to prevent structure failures in underground mines, casualties are still frequent when dynamic areas are encountered, thereby presenting great challenges to practitioners. Dynamic ground supports are designed with characteristics in relation to the dynamic responses of rock/coal in underground excavations. Activities such as drilling or blasting and improper roadway layouts are very likely to cause rock bursts, and so the role of dynamic ground support is to counteract the seismic energy rock bursts can impose.
Nowadays, it is still difficult to adequately specify where, when, and how a dynamic-induced event occurs from the perspective of rock/coal mass, as neither current seismic monitoring nor numerical modelling are able to produce reliable predictions. Nevertheless, proper design of dynamic ground support can provide a solution. Dynamic support requires that the support system should be strong, tough, yielding, and compatible enough that the majority of the kinetic seismic energy released from the rock/coal mass can be absorbed. Current research with laboratorial tests and in situ application of supporting components is not sufficient to guide the countermeasures in dynamic underground mining activities. Therefore, it is necessary to continue studying the mechanical reactions of supports under dynamic environments and to propose new components with trustworthy capabilities.
This Special Issue will be focused on reporting original research articles on the latest findings with regard to the dynamic characteristics of support components or rock/coal masses under various dynamic conditions. Furthermore, to bridge the gap between laboratory tests and actual mining activities, integrated studies concerning both these aspects are welcomed. We welcome both original research and review articles.
Potential topics include but are not limited to the following:
- Failure characteristics of supports in burst-prone mines
- Field investigation or monitoring related to dynamic phenomena in mines
- Advanced tools or methods for dynamic rock laboratory testing
- Advanced tools or methods for laboratory testing of support components
- Practical experience of dynamic engineering cases
- Numerical/analytical methods for revealing in-depth mechanisms of dynamic phenomena in rock mass or supporting components
- Stability analysis of underground mine pillars suffering dynamic impacts
- Cyclic failure of supporting components based on field trials or laboratorial tests
- Whole-process life monitoring of supporting components installed in dynamic ground conditions
- Dynamic tests for energy-adsorbing components using SHTB system