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This study is a discussion of a new visual analysis technique for rock slope displacement. The presentation is based on data obtained from the system for monitoring displacement at a hydropower station in south China. A database technique, a three-dimensional displacement analysis model, and a visualization analysis technique make up the core of this study, and according to these techniques and methods, a set of software for the analytical slope displacement information system was developed.

A discussion is presented of some important problems in block caving such as the caving mechanism of the ore, the caving law of the orebody, evaluation and classification of cavability, ore fragment prediction and measurement and the engineering control method., A discussion is presented of some important problems in block caving such as the caving mechanism of the ore, the caving law of the orebody, evaluation and classification of cavability, ore fragment prediction and measurement and the engineering control method.

Based on the investigation of rock mass structure and the regularity of spatial distribution of rock joints, quantitative analyses of the size and shape distribution of ore fragments in block caving were carried out. Different model parameters included the joint frequency and continuity, the rock mass properties, the in situ stress, the angle between two superiority joint sets and the appearance frequency of superiority joint sets. The microcomputer program RMPSDOF was used to predict the ore fragments., Based on the investigation of rock mass structure and the regularity of spatial distribution of rock joints, quantitative analyses of the size and shape distribution of ore fragments in block caving were carried out. Different model parameters included the joint frequency and continuity, the rock mass properties, the in situ stress, the angle between two superiority joint sets and the appearance frequency of superiority joint sets. The microcomputer program RMPSDOF was used to predict the ore fragments.