Construction of Pressure Tunnels
نویسندگان
چکیده
منابع مشابه
An optimal method to design reinforced concrete lining of pressure tunnels
The utilization of the lining type in pressure tunnels is highly dependent on the geological and hydraulic conditions. There are two types of lining, namely concrete and steel lining but steel lining is one of the most expensive arrangements. To decrease the length of steel lining in these tunnels, the concrete lining, which prevents water seepage from the surrounding rock mass, is the appropri...
متن کاملSteel-lined Pressure Tunnels and Shafts in Anisotropic Rock
For the design of steel-lined pressure tunnels and shafts in anisotropic rock, it is common practice to assume for the computation that the system stands in isotropic medium with the lowest stiffness measured in situ. In this paper, stresses and displacements in the steel liner of a particular steel-lined pressure tunnel are numerically assessed taking into account the anisotropic behavior of t...
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بررسی نقش گفتمان در شکل گیری یا کاهش انگیزش فراگیران زبان خارجی موضوع تحقیق نسبتاً جدیدی است. از این رو، تحقیقات کمی در این زمینه وجود دارد. به منظور پر کردن این خلاء ، مطالعه کنونی به بررسی فرآیند گفتمان مدار شکل گیری یا کاهش انگیزش دانشجویان ایرانی زبان انگلیسی پرداخت. نخست، این مطالعه به صورت آزمایشی با 7 نفر (? دانشجوی پسر و 5 دختر) از دانشجویان سال دوم دوره ی کارشناسی زبان و ادبیات انگلیسی ...
Soil-Interaction of Intake Pressure Tunnels under Ground Strength Reduction Conditions due to Cracking of the Lining (Case study: Dasht-e-Abbas intake pressure tunnel)
The induced cracks on the concrete lining of the intake pressure tunnels may cause the water seep into the surrounding media leading to develop a hydro pressure on the external surface of the lining. In the common design practice, the lining can be designed to tolerate with this pressure using the Schleiss method. However, when the tunnel is constructed above the underground water, the seepage ...
متن کاملStudy on Oxygen Supply Standard for Physical Health of Construction Personnel of High-Altitude Tunnels.
The low atmospheric pressure and low oxygen content in high-altitude environment have great impacts on the functions of human body. Especially for the personnel engaged in complicated physical labor such as tunnel construction, high altitude can cause a series of adverse physiological reactions, which may result in multiple high-altitude diseases and even death in severe cases. Artificial oxyge...
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ژورنال
عنوان ژورنال: Archives of Hydro-Engineering and Environmental Mechanics
سال: 2019
ISSN: 2300-8687
DOI: 10.1515/heem-2019-0006