RAILWAY DISTURBANCE

Hey everyone!Today my research is based on the main railway disturbance.These are:

  • Noise vibration
  • Air
  • Soil
  • water

First, my research will be on noise vibration .Then others will be on my next research.

Railway noise pollution can be either from airborne sound or from vibration-induced as a result of rail traffic  . The main source of railway noise comes from freight wagons, followed by high-speed trains and inner-urban railways.  However, locomotives passing and accelerating, freight wagons braking, vibrations from rail corrugation, and out-of-round wheels or vehicle coupling in shunting yards, are other sources of noise .

 Noise levels vary, depending on the landscape and weather; open and flat areas allow noise to travel further than forest or mountains areas. In mountainous areas, the effect of noise is greater within valleys, when their width is less than the height of their walls, reducing the attenuating effect of noise . Frost can make the ground hard and impede sound  absorption,but fog prevents noise from dissipating.

Noise above 55 dB(A), where dB(A) is a measure that attempts to correct the way the human ear perceives loudness, is considered noise pollution for humans, and the sound values in the range 65–75 dB(A) cause stress to the body, leading to arterial hypertension (high blood pressure), cardiovascular disease, and heart attacks . In Canada, the sound level of a passing train reaches values up to 85 dB(A), but between trains the sound levels drop to 43–53 dB(A) .Measurement campaigns on high speed trains in several European countries over 10 years revealed sound values ranging from 85.5 to 97 dB(A) when the train speed was between 250 and 350 k. In Japan Matsumoto , compared the noise as a function of distance and observed a high noise level of 64 dB at 200 m from a railway in the countryside, a value similar to that near residential areas (65.7 dB). In fact, in Japan, noise can still reach 72 dB at 50 m from the track, i.e., higher than the Japanese permissible standards of 70 dB A.

 

 

https://link.springer.com/chap.../978-3-319-57496-7_6

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Original Post

Hi Ashilline, 

It’s super exciting how you are beginning a new inquiry question and topic. I really enjoyed how you added your project plan because it super intriguing to see where you are doing with this topic (in the long-term). It also helps me, so I can give you suggestions. As a result, the organization of your post is well-structured! You also have a lot of detail.

The ways noise from railways can affect us is shocking. It’s intriguing how sound above 55dB(A) is considered to be noise pollution because it is the peaking point where it is perceived “loud”. Furthermore, there are various forms and ways, from stress, arterial hypertension, cardiovascular disease and heart attacks, that we can be affected. In Coquitlam, not many people heed much attention to noise pollution, for most of us don’t experience passing trains on a daily basis. It’s important to bring into light on this topic. Congratulations! For your next round of research on air, you may want to look into what sort of gas trains use and how they affect our environment. Before, I know that we used steam trains. They caused a lot of smoke. When we started to use diesel and electric trains, they were cleaner. However, large amounts of coal still burn to make them. Consequently, I suggest you look also into the developments on how we are trying to reduce fuel consumption for a cleaner environment.  

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Websites to use: 

https://www.sahistory.org.za/a...rent-types-transport  

https://enviroliteracy.org/env...rail-transportation/  

https://airbrakesaturningpoint...m/social-impact.html  

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Good luck, 

Alison 

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