The expression "secondary lining" is not commonly used in written English, but it is not incorrect either. It could be used to refer to the process of introducing a layer of material to the inside of a structure, such as a wall or a pipe, in order to provide insulation or reinforcement. For example, "The plumber recommended secondary lining the walls of the basement to protect against damp."
With increasing overburden depth, the stress concentration at the spring level and the horizontal deformation in the secondary lining increases, which are the main reasons for cracking in the secondary lining.
In this paper, a large shallow highway tunnel in loose deposits is used as an example to study the cracking mechanism of secondary lining.
An efficient composite shell design with minimal additional reinforcement is achievable if the secondary lining thickness is reduced as compared to current practice.
Because of its high resistance to corrosion, cast iron has been the most commonly used material for segments, thus eliminating the need for a secondary lining of concrete.
Then, this study verified the rationality of the existing reinforcement scheme and obtained the final deformation stability time of the surrounding rock through a numerical simulation of the support reinforcement and the secondary lining during the operational period.
Parametric studies over the practical range of interface stiffness values show that composite action is maintained, although at high interface stiffness, excessive bending may be imposed on the secondary lining, requiring additional reinforcement.
In 1993, she launched her secondary line, Miu Miu, and began a men's clothing line.
Marc by Marc Jacobs, the designer's secondary line, could be closing.
Thus Marc Jacobs, who notoriously created a grunge collection for Perry Ellis a decade ago, reintroduced elements of the look in his secondary line.
Last month she also staged a triumphant homecoming catwalk show in London for the brand's secondary line McQ.
"I have a problem to do a collection that is a secondary line," he said that morning at the Carlyle.
