What is a Landslide?

If soils, rocks and other soil fragments can no longer bind them and escape to gravity, landslides will occur

The downward force of the landslide may slowly move (only a few millimeters per year) or may have a catastrophic effect quickly. Landslides may occur even underwater, causing tsunamis and damage to coastal areas. These landslides are called submarine landslides.

Landslides can be caused by earthquakes, volcanic activity, changes in groundwater, disturbances or slope changes. Short-term heavy rain tends to cause shallow and fast moving mud and landslides. Slow and steady rain over a long period of time can cause deeper and slow landslides. Different materials will also behave differently

Landslide damage occurring every year in the United States reaches as much as 2 billion dollars. In the record storm in the San Francisco area in January 1982, about 18,000 debris flows were caused overnight! Physical damage exceeded $ 66 million and 25 people died

When the next election took place in 1997, the Conservative Government quickly regained its unpopular, the Labor Party under Tony Blair gained a huge overwhelming advantage. It is worth noting that recent "Great Landslides" in the UK means. The Labor Party won 43% of votes, with conservatives 31% and LDP 17%. The Labor Party won many seats with discreet profits, so the total number of votes has been converted to 418 seats, 165 seats and 46 seats out of the 650 seats in the House.

Landslides are important geological hazards that can damage natural and social environments. Many authors treat the concept of landslide in various ways. Varnes and IAEG (1984) define the landslide as "massive deformation of almost all slopes including rockfalls, damping and landslides with little or no real slip". Brusden (1984) argues that landslides are a unique form of mass transit, a process that does not require transport media such as water, air, ice. Crozier (1986) defines a landslide as "a transport agent for outward and downward gravity movements of earth's material without tap water". According to Hutchinson (1988), "a strict sense of landslide is a relatively rapid mass waste treatment that brings earth rocks, debris, or downhill movement caused by various external stimuli"

Landslides are defined as large amounts of rocks, debris, or soil that travel along slopes. Landslide is "mass waste" which represents the movement of the earth and rock downhill under the direct influence of gravity. The term "landslide" has five slope motion modes. Falling, dumping, landsliding, spreading, and flowing. These are further classified into the type of geological material (rock, debris, soil). Debris flow (often called landslide or landslide) and falling rock are examples of common types of landslides