This paper presents a collaborative control scheme involving “unloading-solidifying” to prevent rock bursts during narrow pillar recovery at large mining depths. In this study, the stress distribution rule of coal mass excavation and process is studied, energy accumulation characteristics overlying hard thick roof structure are investigated. way, burst inducing mechanism working face under comp...

a brief background to the development of the rock engineering design process is given, showing that since the development of the science of mathematics, deterministic methods have been used to perform various calculations. the variability of rock properties and support characteristics have always been known. however, they were not explicitly used in design but compensated for by the use of a sa...

The mining industry relies heavily on empirical analysis for design and prediction. An empirical design method, called the critical span graph, was developed specifically for rock stability analysis in entry-type excavations, based on an extensive case-history database of cut and fill mining in Canada. This empirical span design chart plots the critical span against rock mass rating for the obs...

A brief background to the development of the rock engineering design process is given, showing that since the development of the science of mathematics, deterministic methods have been used to perform various calculations. The variability of rock properties and support characteristics have always been known. However, they were not explicitly used in design but compensated for by the use of a sa...

The paper describes some experiences carried out in monitoring of two rock faces in Italian Prealps in order to detect changes due to rock detachments. Since the forecasting of possible rockfall events is the main aim of this research, terrestrial laser scanning application was investigated for high precision deformation monitoring in this context. Firstly, problems concerning the data acquisit...