Scottish Road Network Landslides Study - University of Glasgow

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SCOTTISH ROAD NETWORK LANDSLIDES STUDY Editors M G Winter (TRL Limited), F Macgregor and L Shackman (Scottish Executive) The Scottish Executive 2005 Cover Photograph (© Perthshire Picture Agency, PPA: www.ppapix.co.uk): The A85 in Glen Ogle blocked by two debris flows on 18 August 2004. RAF and Royal Navy helicopters are pictured airlifting some of the 57 occupants from the 20 trapped vehicles to safety.
Electronic copies of this report may be obtained from the Scottish Executive web site (www.scotland.gov.uk). The views expressed in this report are those of the Editors and Authors and do not necessarily represent those of the Department or Scottish Ministers. The Scottish Executive and Astron would like to point out that some of the images in this document are of a poorer quality than would normally appear in their documents. This is because some photographs were taken on digital cameras, mobile phone cameras and/or in difficult conditions. In addition, some of the graphs and images used have been necessarily downloaded from websites at low resolutions which are of a poor reproductive quality when printed. © Crown Copyright 2005. Except as otherwise stated. Limited extracts from the text may be reproduced provided the source is acknowledged. For more extensive reproduction, please write to the Chief Road Engineer, Scottish Executive, Victoria Quay, Edinburgh, EH6 6QQ.
Page 1: Scottish Road Network Landslides St
Page 5 and 6: MINISTERIAL FOREWORD The landslide
Page 7 and 8: 3 WORKING GROUP Dr Roger Moore: Rog
Page 9 and 10: 5 EXECUTIVE OVERVIEW Outlining poss
Page 11 and 12: 7 EXECUTIVE OVERVIEW The initial st
Page 13 and 14: 1 INTRODUCTION TO LANDSLIDE HAZARDS
Page 15 and 16: 11 INTRODUCTION Section 6 describes
Page 17 and 18: 13 BACKGROUND However, Varnes (1978
Page 19 and 20: 15 BACKGROUND squares that showed s
Page 21 and 22: 17 BACKGROUND events that do not im
Page 23 and 24: 19 BACKGROUND The A9 was blocked by
Page 25 and 26: 21 BACKGROUND important to note tha
Page 27 and 28: 23 BACKGROUND earthworks stability
Page 29 and 30: 3 DEBRIS FLOW INFORMATION SOURCES b
Page 31 and 32: 27 INFORMATION SOURCES whereas stre
Page 33 and 34: 29 INFORMATION SOURCES Detailed haz
Page 35 and 36: 7. Meteorological: a) Antecedent ra
Page 37 and 38: 33 INFORMATION SOURCES 1:50,000 sca
Page 39 and 40: 35 INFORMATION SOURCES socio-econom
Page 41 and 42: 37 INFORMATION SOURCES Figure 3.6 -
Page 43 and 44: 39 INFORMATION SOURCES team using a
Page 45 and 46: 41 INFORMATION SOURCES events would
Page 47 and 48: NEXTMap Britain Digital Terrain Mod
Page 49 and 50: 4 DEBRIS FLOW TYPES AND MECHANISMS
Page 51 and 52: 47 TYPES AND MECHANISMS damage. Exa
Page 53 and 54:
49 TYPES AND MECHANISMS Figure 4.4
Page 55 and 56:
Page 57 and 58:
53 TYPES AND MECHANISMS The shear r
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Preparatory Factors 55 TYPES AND ME
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57 TYPES AND MECHANISMS Road cuts m
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59 TYPES AND MECHANISMS such featur
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61 TYPES AND MECHANISMS ruptures to
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4 6 10 -6 10 m/s -6 10 m/s -6 m/s L
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65 TYPES AND MECHANISMS detachment
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Page 73 and 74:
69 CONTRIBUTORY FACTORS There is ho
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5.1.2 Geological, Geotechnical and
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73 CONTRIBUTORY FACTORS Other hydro
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75 CONTRIBUTORY FACTORS to the fail
Page 81 and 82:
77 CONTRIBUTORY FACTORS 5.3 FACTORS
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79 CONTRIBUTORY FACTORS upon the lo
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6 PROPOSED METHODOLOGY FOR DEBRIS F
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83 PROPOSED METHODOLOGY ground is u
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85 PROPOSED METHODOLOGY presence of
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87 PROPOSED METHODOLOGY The exposur
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89 PROPOSED METHODOLOGY Once a haza
Page 95 and 96:
A84 South of Strathyre (8km) HIGH H
Page 97 and 98:
HIGH HAZARD AREAS AND EARLY OPPORTU
Page 99 and 100:
8 DEBRIS FLOW MANAGEMENT AND MITIGA
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8.2.3 United Kingdom MANAGEMENT AND
Page 103 and 104:
MANAGEMENT AND MITIGATION OPTIONS D
Page 105 and 106:
MANAGEMENT AND MITIGATION OPTIONS a
Page 107 and 108:
MANAGEMENT AND MITIGATION OPTIONS N
Page 109 and 110:
MANAGEMENT AND MITIGATION OPTIONS r
Page 111 and 112:
MANAGEMENT AND MITIGATION OPTIONS F
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9 SUMMARY AND RECOMMENDATIONS FOR D
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SUMMARY AND RECOMMENDATIONS The ini
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SUMMARY AND RECOMMENDATIONS extensi
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115 REFERENCES Chan, R. K. S. 2000.
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117 REFERENCES Moore, R., Lee, E. M
Page 123 and 124:
APPENDIX - PROJECT WORKSHOP AGENDA
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