Highway Slope Manual

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19 Plate 1.6 Open-slope Debris Avalanche on Natural Terrain in Ma Liu Shui in July 1997 (Lam, 1999) Note: The landslide debris reached the adjacent KCRC railway track. Plate 1.7 Open-slope Debris Avalanche on Natural Terrain in Ma On Shan in July 1997 (Halcrow, 1999b) Note: The landslide debris reached the cycle track at the toe.
20 Plate 1.8 Steep Natural Terrain along the North Lantau Expressway near Tung Chung 1.3 HIGHWAY SLOPE MANAGEMENT SYSTEM To ensure that the safety of slopes is adequately managed and their stability maintained, road owners should set up appropriate slope management systems commensurate with the number of slopes and the size of the slope-related problems (e.g. the potential risk to life and property and the socio-economic impact associated with disruption to traffic in the event of landslides) that they have to manage. A range of options is illustrated in Figure 1.1. The <strong>Highway</strong>s Department (HyD) of the Hong Kong Special Administrative Region (SAR), being responsible for the maintenance of a large number of highway slopes in Hong Kong, has established a comprehensive slope management system. A brief description of HyD’s system is given in Appendix A. Apart from HyD, there are others who are responsible for the maintenance of roadside slopes. These include the Agriculture, Fisheries and Conservation Department, Architectural Services Department, Drainage Services Department, Hospital Authority, Housing Authority, Water Supplies Department, Kowloon-Canton Railway Corporation, Mass Transit Railway Corporation, universities and private parties. An appropriate slope management system should be set up by each party. In some cases, e.g. a private lot with only a few slopes affecting a lightly used road, a simple slope management system may be adequate.
Page 1 and 2: HIGHWAY SLOPE MANUAL GEOTECHNICAL E
Page 3 and 4: 2 。 The Government of the Hong Ko
Page 5 and 6: 4 STEERING COMMITTEE: Geotechnical
Page 7 and 8: 6 Page No. 3. SITE INVESTIGATION 33
Page 9 and 10: 8 Page No. APPENDICES APPENDIX A -
Page 11 and 12: 10 LIST OF FIGURES Figure No. Page
Page 13 and 14: 12 LIST OF LATES Plate No. Page No.
Page 15 and 16: 14 [BLANK PAGE]
Page 17 and 18: 16 year (Evans et al, 1998), they h
Page 19: 18 Plate 1.4 Landslide at Ching Che
Page 25 and 26: 24 Notes: (1) The projects in the P
Page 27 and 28: 26 of the geotechnical hazards and
Page 29 and 30: 28 Table 2.2 Geotechnical Haards Th
Page 31 and 32: 30 for carrying out a GA is given i
Page 35 and 36: 34 Table 3.1 Potential Uses of Diff
Page 37 and 38: 36 or features such as dykes or fra
Page 39 and 40: 38 movement monitoring and control
Page 41 and 42: 40 landslide debris, and the nature
Page 43 and 44: 42 Notes: (1) This Figure is based
Page 45 and 46: 44 Table 4.5 Recommended Minimum Fa
Page 49 and 50: 48 Plate 5.1 Surface Runoff Channel
Page 51 and 52: 50 Cascades, with cover where neces
Page 53 and 54: 52 (a) Trash Grill at Inlet of Cros
Page 55 and 56: 54 5.2.3 Drainage Improvement Works
Page 57 and 58: 56 For the control of visual impact
Page 59 and 60: 58 Plate 6.3 Pattern and Texture Pl
Page 61 and 62: 60 ighways are environments with a
Page 63 and 64: 62 Filling operations for a highway
Page 65 and 66: 64 Blasting is the most common meth
Page 67 and 68: 66 Notes: (1) The responsibility fo
Page 69 and 70: 68 Results of Rockfall Protective B
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70 [BLANK PAGE]
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72 overseeing the maintenance of th
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74 In addition to the slope upgradi
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76 after each heavy rainstorm event
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78 d n n d d d d d d d
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80 event of a landslide should be b
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82 [BLANK PAGE]
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84 Federal Highway Administration (
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86 Highways Department (1996). Mana
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88 Wong, H.N., Pang, L.S., Wong, A.
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90 [BLANK PAGE]
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92 [BLANK PAGE]
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94 key natural terrain and man-made
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96 and details of all existing slop
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98 [BLANK PAGE]
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-AA (v) relevant services and utili
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-A2 (m) (n) 1dentify any statutory
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-A4 Notes: (-) An example of a prog
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106 [BLANK PAGE]
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108 Wong, C.K.L. (1998). The New Pr
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110 of slopes and slope owners and
Page 113 and 114:
112 [BLANK PAGE]
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114 (iv)subsidence of ground or roa
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