Rock Slope Engineering Reference Manual. Part G (Field Manual): Description of Detail Line Engineering Geology Mapping Method

摘要

The detail line mapping method consists of stretching a measuring tape at waist height, or some other appropriate height depending on the nature of the rock face and toe conditions, along the exposed rock face or tunnel wall and recording the measurements and features of interest of the geological discontinuities that intersect the tape. The basic approach taken is easily adapted to computer based system which can be used to aid with the processing, synthesis, and manipulation of the survey data. It aims to relieve the geologist of much of the tedious clerical work involved in transforming his observations into a model for the rock mechanics engineer but makes no attempt to supplant his judgement. The details of the various procedures for setting up a traverse line and recording features of interest in terms of the slope stability analysis requirements are explained. The basic format of the detail line survey sheet is shown. Genetic descriptions and terms of geological discontinuities which should be used in general mapping are given.