Geologic and Mine Modelling Using Techbase and Lynx / Edition 1

by Martin Smith

Overview

This text provides a process oriented discussion of the theory, methodology and philosophy of geologic and mine modelling using two commercial software packages: Techbase, a leader for mineral exploration and modelling bedded deposits; and Lynx, for modelling geology.

Product Details

ISBN-13:	9789054106913
Publisher:	Taylor & Francis
Publication date:	01/01/1999
Edition description:	Hardbound with CD
Pages:	436
Product dimensions:	7.00(w) x 10.00(h) x (d)

Table of Contents

PREFACE — 1 INTRODUCTION — 1.1 Geologic and mine modelling software — 1.2 Modelling as a basis for decision making and design — 1.3 Overview and limits of geologic and mine modelling — 1.4 Geologic and mine modelling procedure — 1.5 Examples and conventions used in text — 1.6 An introduction to Techbase — 1.6.1 Overview of Techbase — 1.6.2 Limitations of Techbase — 1.6.3 Navigating Techbase — 1.7 An introduction to Lynx — 1.7.1 Overview of Lynx — 1.7.2 Limitations of Lynx — 1.7.3 Navigating Lynx — 1.8 A comparison of Techbase and Lynx — 2 GEOLOGIC DATABASE MANAGEMENT — 2.1 Data formats — 2.1.1 Survey or map data — 2.1.2 Drillhole data — 2.2 Geologic database structure — 2.3 Creating a Techbase database — 2.4 Key fields and join tables — 2.5 Creating a Lynx database — 2.5.1 Type 1: Header records — 2.5.2 Type 1: Survey records — 2.5.3 Type 1: Data records — 2.6 Some hints on UNIX, text editing and generating Lynx ASCII drillhole data files — 2.7 Working with map data — 2.8 Lynx map definition — 2.9 Importing ASCII map data — 3 DATA ANALYSIS — 3.1 Introduction — 3.1.1 Data validation — 3.1.2 Exploratory analysis — 3.1.3 Outliers and population classes — 3.1.4 Distributions — 3.1.5 Correlations — 3.1.6 Spatial covariance — 3.2 Visual data analysis — 3.2.1 Scatter plots — 3.2.2 Histograms — 3.2.3 Contour maps — 3.3 Spatial covariance — 3.4 Drift and trend surfaces — 4 MODELLING GEOLOGIC SURFACES — 4.1 Drillhole data compositing — 4.1.1 Regularization — 4.1.2 Boundary intercepts — 4.1.3 Compositing methods — 4.2 Two-dimensional surface modelling — 4.3 Representing a surface as a matrix — 4.4 Cell tables in Techbase — 4.5 Triangulated surfaces — 4.6 Calculating volumes from triangle sets — 4.7 Interactive geological interpretation — 4.8 Cross sectional displays — 4.9 Interactive geological interpretation and volume modelling — 5 ESTIMATION OF GRIDS, AREAS AND VOLUMES OF INTERSECTION — 5.1 Estimation methods — 5.2 Areas of influence — 5.3 Triangles and triangulation — 5.4 Splines — 5.5 Weighted averages and inverse distance — 5.6 Block models — 5.7 Geologic reserves — 5.8 Derivation of the Kriging weights — 5.9 Derivation of an expression for R(x0) — 5.10 Unconstrained optimization of a single function and the Lagrange parameter — 5.11 Deriving the Kriging system of equations — 5.12 Modelling the experimental variogram — 5.12.1 Nugget effect — 5.12.2 Linear models — 5.12.3 Spherical models — 5.12.4 Exponential models — 5.12.5 Gaussian models — 5.12.6 Hole effect — 5.13 Modelling anisotropic variograms — 5.14 Using jackknifing to evaluate estimation accuracy — 5.15 Estimating areas and volumes of intersection — 6 OPEN PIT MINE DESIGN — 6.1 Geological versus mining block models — 6.2 Intersecting pits, block models and surface topography — 6.3 Calculating mining block values — 6.4 Pit expansion methods — 6.5 Cone mining heuristics — 6.6 Ultimate pit limit optimization — 6.7 Pit expansion — 6.8 Including haul roads in an expanded pit — 6.9 Haul road construction in plan view — 6.10 Pit volume modelling and mining reserve analysis — 7 UNDERGROUND DESIGN — 7.1 Mine development openings — 7.2 Mine access and haulage method — 7.3 Shaft location and number — 7.4 Shaft design — 7.5 Shaft station chambers — 7.6 Level intervals — 7.7 Raises — 7.8 Ramps — 7.9 Drifts and crosscuts — 7.10 Using Lynx for underground excavation design — 7.11 Mine excavation openings — 7.12 Stope design using Lynx — 7.13 Using Techbase for underground excavation design — 7.14 Polygon tables — 8 PRODUCTION SCHEDULING — 8.1 Long-term production scheduling — 8.2 Short-term production scheduling — APPENDIX 1: Project databases A1.1 Using the project databases — A1.1.1 Suggestions for using Techbase databases A1.1.2 Suggestions for using Lynx databases — A1.2 Project descriptions Al.2.1 Boland Banya A 1.2.2 Smoot Al.2.3 Pasir A 1.2.4 Tutorial — APPENDIX 2: Techbase database automatic fields — APPENDIX 3: Techbase value settings — REFERENCES — INDEX.