what Are the landslide cause in guwahati
Answers
Explanation:
Landslide in Guwahati city is mainly caused due to interference of human by disturbing the surrounding environment. Due to rise in population, the area under forest cover has decreased, which has exposed the top surface to weathering.
Answer:
The causes of landslide in Guwahati are:
Hills lying near roads or highways are often cut and severed to provide extra space for addition of extra lanes. The part of road cross-section at Jorabat in Guwahati has been widened to make way for a 4-lane highway due to which the hill slopes near the road has been cleared and excavated. Even though the exposed cut slopes look unwavering at first sight but it might not be the case during intense rainfall conditions. The rainfall data of first 11 days of month of May, 2013 indicates direct relationship of rainfall and landslide.
Moreover the hills in question also have a history of being affected by landslides. The area records many landslide activities during the rainy seasons leading to loss of lives and damage to property. The failure of a mass of soil located beneath a slope is called a slide. It involves a downward and outward movement of entire mass of soil that participates in the failure. The action of gravitational forces and seepage forces within the soil are two main causes of landslide. The slopes under study fail suddenly without any prior warning. However, continuous drizzles are dangerous than heavy rainfall. As in heavy rainfall, most of the rain water becomes run off compared to that of drizzle, where the rain water sips into the soil mass making it saturated and weak.