The collection and analysis of mass-movement data and the broader dissemination of results requires the adoption of standard methods for describing mass-movement style or type and activity state. Main mass-movement styles, such as falling, toppling, sliding, flowing, spreading, and creeping, are defined herein. Well-known substyles are explained and different activity states of mass movements a...

Abstract Rock anchors are used to stabilise large scale infrastructures. Failure of rock could threaten the stability and lead severe economic social consequences. The design is based on four principal failure modes, which breakage steel tendon, tendon-grout interface failure, grout-rock mass around anchor. current dimensioning methods uncertain due limited knowledge bond strength failure. meth...

Geophysical methods for local rock burst prediction are currently being developed along two lines: improving recording equipment and data processing methods. Progress in developing is constrained by the lack of informative prognostic models that describe condition mass, process mass fracturing, phenomena can substantiate choice both criteria test parameters give an estimate time remaining until...

Some of the geotechnical parameters used in the analysis may not be accurately measured directly from laboratory tests due to effects of sample disturbance and errors of tests. The back analysis or the observational method are thus often applied to determine the representative and/or dominant strength parameters based on field observations in practice. Based on the Hoek-Brown failure criterion,...

the rock masses in a construction site of underground cavern are generally not continuous, due to the presence of discontinuities, such as bedding, joints, faults, and fractures. the performance of an underground cavern is principally ruled by the mechanical behaviors of the discontinuities in the vicinity of the cavern. during underground excavation, many surrounding rock failures have close r...

A watershed-based segmentation approach that uses iterative bilateral smoothing with an adapting photometric similarity parameter for pre-filtering is adopted for the segmentation of rock scenes. But the resultant segmented images also contain non-rock watershed regions which are not desired for measuring rock sizes. A proximity-based classifier is applied for the removal of the latter using fe...