... are unique to the waterways. Table 1 : Comparisons between canal embankments and cuttings. Material Age Homogeneity Compaction Max. slope angle Height Vegetation Structure interactions Location Gives support to Deteriorating factors Results of failure Embankments Variable...

...WETTING DETERIORATION OF SOFT SANDSTONE MICROSCOPIC INSIGHTS Fu-Shu Jeng1, Ming-Lang Lin2 and Tsang-Hwei Huang3 ABSTRACT Some sandstone may become weaker and softer as it is immersed in water. It has been reported that the excavated surface of a tunnel, being exposed to a very humid working...

... deterioration upper seam ABSTRACT: When conditions in the gate roads of a longwall panel at Sigma Colliery suddenly started deteriorating, the matter was investigated in detail. Observations indicated that there were distinct zones of tensile and compressive rock failure. The observations corresponded...

... ABSTRACT: An analysis is given of a case history of the deterioration of a gallery along a long wall coal panel during the extraction of the coal. Many observations have been carried out during the winning of the panel and additional information was gathered during the winning of a second coal...

..., diamond drilling and surface and downhole geophysics with additional mapping and drilling in exploratory underground works. Laboratory testing of cores was conducted for indexing of the various rock types and to investigate the deterioration characteristics of the rocks for long term stability...

... about two times than that with deterioration to be considered. ). For viscoelastic-viscoplastic rock media,the final loading on lining relates to a series of phy- sical and geometrical parameters of lining and viscoelastic rock media,but mainly depends on lining time t, and dimension of viscoplas- tic...

... metals & mining strength Rock Strata stone masonry structural geology steel rib shotcrete dynamic loading deterioration reservoir geomechanics displacement convergence roadway Clay Rock Reservoir Characterization strata deformation Upstream Oil & Gas weak rock lining...