The term "construction shaft" is correct and usable in written English.
It is typically used to refer to a vertical tunnel, such as a mine or underground space, that is meant for construction purposes. For example: "The construction shaft was used to access the underground garage."
Construction shaft, used as an air inlet or outlet for better ventilation effect, is applied into the construction ventilation of extra-long tunnel under drilling blasting method and trackless transportation.
In order to solve the problem of construction ventilation in extra-long tunnel under the context of drilling blasting method and trackless transportation, the construction shaft is used as an air inlet or outlet to better ventilation effect.
Therefore, a construction shaft, a water sealing pre-grouting plan and a special supporting system were designed to prevent the potential water inflow when tunneling underneath the Tachia River.
Work began with demolition of buildings at the Chancery Lane site in April 1896 and construction shafts were started at Chancery Lane, Shepherd's Bush, Stanhope Terrace and Bloomsbury in August and September 1896.
Because of its construction, the shaft can be bent, without fracture, to a much smaller radius than a solid shaft of the same outside diameter.
Previous studies have shown that composite materials can replace metals as the material of construction in shafts.
Excavation response experiments conducted as part of shaft construction recorded displacements, shaft convergence, stress changes, and microseismic events in the rock as excavation progressed.
Two plans for mitigating water inrush during shaft construction are proposed based on the models of the spatial distribution of fractures and potential paths of flowing groundwater to the shaft.
Measurement studies have shown that: during the plastic stage of shaft construction period, with the release of hydration heat, the thermal expansion occurs in the concrete and the strain gauge, leading to tensile strain.
Especially adapted to large construction jobs, pier shafts having widths of more than 1.8 m (6 feet) have been excavated to depths greater than 30 m.
