(1) Halcrow China Ltd., Hong Kong, China;(2) University of Leeds, Leeds, UK;(3) University of Seoul, Seoul, Korea;(4) Golder Associates, Toronto, Canada;(5) Canterbury, New Zealand
Abstract:
Sheeting joints are extensive fractures that typically develop parallel to natural slopes. Embryonic sheeting joints initially
constitute channels for water flow and then become the focus for weathering and sediment infill accompanied by progressive
deterioration and dilation. Slabs of rock fail along them periodically because of their adverse orientation and long persistence.
They are however rough and wavy and these characteristics contribute highly to their shear strength and improve their stability.
This paper reviews several landslide case histories and on the basis of these provides guidelines for characterising sheeting
joints and determining their shear strength. Engineering options for stabilising sheeting joints in natural and cut slope
configurations are then examined with reference to case examples.