Report No. : GCO Publication No. 2/85
Report Title : Groundwater Lowering by Horizontal Drains (1985), 123 p. (Reprinted, 1990).
Author : D. J. Craig & I. Gray
This report presents the results of work carried out to evaluate the feasibility of using a system of horizontal drains to lower groundwater levels in a hillside in the Mid-levels area of Hong Kong in order to improve the hillside stability. In addition, details are provided of the field trials undertaken to evaluate the problems involved in drilling and installing long horizontal drains into the colluvium and weathered rocks encountered in Hong Kong.
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