Highway Slope Manual

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Highway Slope Management System (1)
Road Owners with a Large Number of Key Components of the Systems
Highway Slopes to Maintain
Slope Information System Slope Maintenance and Upgrading System Emergency System
Inventory of slopes (2)
Slope location plans
Slope Maintenance Plan/Maintenance
Manuals
Emergency procedures
Procedures to allow early identification
Slope catalogue (3)
System for upgrading of substandard slopes and inspection of serious landslide
Qualified and experienced personnel for
incidents
carrying out maintenance inspections
As-built records of slopes and slope
works
Location plans and details of services
especially water-carrying services that
could affect or be affected by slopes
Records of past landslides
Computerised slope inventory and
database for managing the slope
information
Adequate resources for carrying out the
required maintenance works
Slope maintenance inspection and works
records
A detailed Slope Maintenance
Plan/Maintenance Manuals supplemented
with a set of circulars/guidance notes/
instructions
A long-term strategy for selecting
substandard slopes for upgrading
A dedicated team of staff and a term
contractor for carrying out routine
maintenance inspections and works
One or more consultants engaged to
undertake the Engineer Inspections (EIs) for
different packages of slopes
Computerised system to manage slope
maintenance inspection and works records
Staff on standby 24 hours to report or
receive reports on landslide incidents
and to arrange inspection of landslides
Qualified and experienced personnel
for carrying out landslide inspections
Resources available for carrying out
urgent repairs
A detailed Emergency Manual
supplemented with a set of
circulars/guidance notes/instructions
An emergency controller to assign
priority for the inspection of serious
landslide incidents
A dedicated team of staff on call 24
hours a day to report or receive reports
on landslide incidents
A term contractor engaged for carrying
out urgent repairs
Geotechnical engineers or consultants
engaged to undertake the landslide
inspections
way
Road Owners with Only a Few High
Slopes to Mai ntain
Slope information kept in the form of A few instructions to document the A few instructions to document the
paper file records
maintenance system
emergency system
Upgrading of substandard slopes based on
the recommendations of the EIs or as
ordered by the Building Authority
An in-house experienced technical staff or a
contractor/property management agent
engaged for carrying out routine
maintenance inspections and works
A geotechnical engineer professionally
qualified in Hong Kong engaged to
undertake the EIs
Slope maintenance inspection and works
records kept on paper files
A designated person to report
landslides to the Police or GEO who
would arrange inspection and urgent
repair works, where required
Notes: (1) This Figure aims to illustrate the range of options which road owners with a large number of highway
slopes and those with a small number to maintain can adopt, in order to have a good slope
management system. Road owners with other slopes to maintain can also adopt the appropriate
option to suit their circumstances.
(2) The inventory of slopes should include not only slopes maintained by the road owners but also those
owned or maintained by other parties, the failure of which could affect their roads.
(3) This should include information such as slope type, slope geometry and boundary, type of surface
protection, signs of seepage and movement and time of observation, and reference to previous
study/investigation reports and facilities affected.
Figure 1.1 Range of Options for Highway Slope Management System