Outline the process of liquefaction.
- AQA - A-Level Geography - Question 5 - 2020 - Paper 1
Question 5
Outline the process of liquefaction.
Worked Solution & Example Answer:Outline the process of liquefaction.
- AQA - A-Level Geography - Question 5 - 2020 - Paper 1
Step 1
Liquefaction occurs when compacted sediments lose strength
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Answer
Liquefaction takes place when compacted sediments experience a loss in strength and stiffness due to an applied stress, such as shaking during an earthquake.
Step 2
Material behaves like a liquid
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Answer
Under these conditions, materials that are typically solid begin to behave like a liquid. This transformation is critical, as it leads to different structural behaviors.
Step 3
Conditions necessary for liquefaction
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Answer
For liquefaction to occur, there needs to be a high degree of soil saturation. This is often seen in saturated, unconsolidated soils, which have a low density.
Step 4
Consequences of liquefaction
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The implications of liquefaction can be severe, leading structures to lose stability, compress under load, and even collapse. This rapid loss of structural integrity poses significant risks to buildings and infrastructure.
