Slope Safety and UsSlope Safety and Us

To stress the importance of the close relationship between earth science and

man

Focus of study:Focus of study:

• Where are the dangerous slopes of our school?

• When did landslide occur?• Why did slopes collapse?• How did landslide affect us? • What are the measures taken to prevent

landslides?

Ways of teaching:Ways of teaching:

• Site visit

• Map work and worksheet

• Searching info on the internet

• Weather map interpretation

• Video show

Where are the dangerous slWhere are the dangerous slopes of our school?opes of our school?

• Background information:

• Our school site

• http://my.wyk.edu.hk/

• Field work

• A map for locating the dangerous slope

When did landslide occur?When did landslide occur?

May 2 1989

What are the causes of landWhat are the causes of landslide?slide?

• Video show: Landslides in HK by Civil Engineering Dept

• Weather Map

How did landslide affect us?How did landslide affect us?

• Safety of students

• Safety of school buildings

• Traffic

• Bus stop and sidewalk

Man’s response to landslideMan’s response to landslides: s:

Short-term measures

Long-term maintenance

Short-term responseShort-term response

Clearance of mud

Plastic cover and temporary barrier

Removal of bus stop

Long-term measuresLong-term measures

Slope stabilization project

When? Duration?

How? Methods?

Why are these methods adopted?

How much?

How did the slope repair work affect WYK boys?

Limitations? Limitations?

Co-ordination among ED, CED and Building Dept

Ownership – school vs. crown land

A balance between environmental protection and economic consideration

-costly retaining wall

-much of the trees were removed

How can you find out the daHow can you find out the dangerous slopes near your sngerous slopes near your s

chool?chool?

http://hkss.ced.gov.hk/hkss/eng/index.htm