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https://www.sciencedirect.com/science/article/pii/S1674775517300239
1. Introduction. Rockbolt is the most widely used support element in support systems in underground mines and civil tunnels. Rockbolting design is indeed mainly based on experience and it appears that rockbolting design is simply a business of selection of rockbolt types and the determination of bolt length and spacing, but, one essentially uses, either explicitly or implicitly, a methodology ...Cited by: 12
https://en.wikipedia.org/wiki/Types_of_arches
An arch is a vertical curved structure that spans an elevated space and may or may not support the weight above it, or in case of a horizontal arch like an arch dam, the hydrostatic pressure against it.. Arches may be synonymous with vaults, but a vault may be distinguished as a continuous arch forming a roof. Arches appeared as early as the 2nd millennium BC in Mesopotamian brick architecture ...
https://ggwash.org/view/36068/metro-has-eleven-types-of-station-architecture-learn-them-all-with-this-one-interactive-map
Oct 06, 2014 · Metro has eleven types of station architecture. Learn them all with this one interactive map. ... which opened in 1991, has an Arch II design, despite opening at the same time as other waffle stations at Shaw and U Street. Columbia Heights. Twin Tube. The final type of underground station is the twin tube design. This style is used at the super ...
https://link.springer.com/content/pdf/10.1007/s40789-019-00272-5.pdf
support arch. Therefore, a reasonable design of arch joints is the premise of rational support design. Taking Liangjia Coal Mine, a typical deep soft rock mine in China, as research background, this paper fully compared the most widely used joint types of confined concrete arch as analytical objects: flange joints and casing joints.Author: Wei Lu, Qi Wang, Bei Jiang, Shuo Xu, Bohong Liu, Peng Zhang, Zhenhua Jiang
https://www.sciencedirect.com/science/article/pii/0167903191902263
Design tables and guidelines for steel arch supports made from open steel H-sections are presented. The tables record the load bearing capacities, obtained from numerical modelling results, for four different types of steel arches namely circular, semicircular, semicircular with straight legs and splay-legged.Cited by: 4
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