shotcrete
11Эйкли, Карл Итан — Карл Эйкли англ. Carl Ethan Akeley …
12Shaft construction — concerns the building of vertical openings such as Raises and Shafts. Shafts are vertical openings used for supplying equipment, personnel, and support systems to the horizontal tunnel where the pipeline is installed. They can be temporary or… …
13Underground mining (hard rock) — A three dimensional model of an underground mine with shaft access Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, mainly those containing metals[1] such as ore containing gold …
14Carl Akeley — Infobox Scientist name = Carl Akeley box width = image width =150px caption = Carl Akeley birth date = 19 May 1864 birth place = Clarendon, New York death date = 18 November 1926 death place = residence = citizenship = nationality = ethnicity =… …
15Landslide mitigation — Landslides can be triggered by many often concomitant causes. In addition to shallow erosion or reduction of shear strength caused by seasonal rainfall, causes triggered by anthropic activities such as adding excessive weight above the slope,… …
16American Concrete Institute — The American Concrete Institute (ACI) is a non profit technical society and standard developing organization (SDO). ACI was founded in 1904. [ACI:A Century of Progress] ACI History 1904 1929:A lack of standards for making concrete blocks resulted …
17Hormigón proyectado — El hormigón proyectado (o Shotcrete) es un proceso por el cual el hormigón comprimido es proyectado a alta velocidad por medio de una manguera sobre una superficie, para conformar elementos estructurales y no estructurales en edificaciones. La… …
18Architecture and Civil Engineering — ▪ 2009 Introduction Architecture For Notable Civil Engineering Projects in work or completed in 2008, see Table (Notable Civil Engineering Projects (in work or completed, 2008)). Beijing was the centre of the world of architecture… …
19Reinforced concrete — is concrete in which reinforcement bars ( rebars ), reinforcement grids, plates or fibers have been incorporated to strengthen the concrete in tension. It was invented by French gardener Joseph Monier in 1849 and patented in 1867.[1] The term… …
20Drilling and blasting — Before the advent of tunnel boring machines, drilling and blasting was the only economical way of excavating long tunnels through hard rock, where digging is not possible. Even today, the method is still used in the construction of tunnels, such… …
