Why is laying railways difficult?
Answer: Explanation: Indian districts like Gujarat and Rajasthan has a large amount of barren land due to the hot and dry weather throughout the whole year. That’s why railway transportation establishment is also difficult is these two states.
Why is there a lack of rail transport in North India?
There is lack of rail transport in northern India because it is a mountainous region where construction of roads is comparatively easier than laying railway tracks.
Why are the Himalayan mountainous regions Unfavourable for the construction of railway lines?
The Himalayan mountainous regions too are unfavourable for the construction of railway lines due to high relief, sparse population and lack of economic opportunities. Thefts and damaging of railway property has not yet stopped completely.
Where are railway developed in hilly areas and why trace their history in the colonial period?
Answer. The Kalka Shimla Railway, which is a 96 km long, single track working rail link built in 1910 to provide service to the highland town of Shimla. The mountain railways emerged as a result of delayed interest evinced during British Raj for establishing control over the Himalayas and other mountain ranges of India …
How railway network is laid down in hilly area?
In the hilly terrains of the peninsular region, railway tracts are laid through low hills, gaps or tunnels. In recent times, the development of the Konkan railway along the west coast has facilitated the movement of passengers and goods in this most important economic region of India.
Why are railways developed in hilly areas?
The mountain railways emerged as a result of delayed interest evinced during British Raj for establishing control over the Himalayas and other mountain ranges of India. Development of the Hill Passenger Railway: – Tramway between Siliguri and Darjeeling: worked started in 1878 complete in 1881.
Where are railways developed in hilly areas and why 10?
Railway tracts are laid through low hills, gaps or tunnels in the hilly terrains of peninsular region. In the places such as Himalayan regions, it is not favourable to construct railway lines.
Which region is suitable to construct railway lines?
The Northern plains provide favourable conditions for the growth of a railways.
Why narrow gauge is used in hilly areas?
Since narrow-gauge railways are usually built with smaller radius curves, smaller structure gauges and lighter rails, they can be less-costly to build, equip and operate than standard- or broad-gauge railways(particularly in mountainous or difficult terrain).
What is meant by creep of rails?
Creep of Rail is defined as a longitudional movement of rail with respect to sleeper. Rail have the tendency to gradually move in the direction of dominant traffic. The creep of rail is common to all railway tracks and its value varies from almost nothing in some cases to about 130 mm/ month in creep.
What is the most serious effect of creep of rails?
Creep of rails often results in uneven size of gap between railway track and even rail dislocation in severe cases. At the same time, the sleeper will also occur skew phenomenon, which will cause great damage to the line, resulting in poor rail structure and endangering traffic safety.
What are the effects of creep?
Effects of Creep on Concrete and Reinforced Concrete
- In reinforced concrete beams, creep increases the deflection with time and may be a critical consideration in design.
- In eccentrically loaded columns, creep increases the deflection and can load to buckling.
What are the possible cause of creep?
In materials science, creep (sometimes called cold flow) is the tendency of a solid material to move slowly or deform permanently under the influence of persistent mechanical stresses. It can occur as a result of long-term exposure to high levels of stress that are still below the yield strength of the material.
How do you stop creep failure?
Prevention of creep failure Reduce the effect of grain boundaries: -Use single crystal material with large grains. -Addition of solid solutions to eliminate vacancies. Employ materials of high melting temperatures.
What is the principal causes of creep in rails?
Major Causes of Creep Increase of starting the wheels pushes the rail backward and hence the direction of creep is in backward direction. When brakes are applied then the wheels of the vehicles push the rails in forward direction and hence the creep is in forward direction.
What is creep How is it prevented?
The creep of rail can be prevented by the use of anchors and sufficient crib ballast. 3. The creep of the track can be prevented by the use of steel sleepers which provide a good grip. Increase in the number of sleepers per rail length helps to prevent creep.