A methodology for predicting the in situ size and shape distribution of rock blocks

被引：45

作者：

Wang, LG

Yamashita, S

Sugimoto, F

Pan, C

Tan, G

机构：

[1] Cent S Univ, Coll Resources Environm & Civil Engn, Changsha, Peoples R China

[2] Akita Univ, Grad Sch Min & Engn, Akita 010, Japan

[3] Akita Univ, Dept Earth Sci & Technol, Akita 010, Japan

来源：

ROCK MECHANICS AND ROCK ENGINEERING | 2003年 / 36卷 / 02期

关键词：

ore fragmentation; block caving; cavability; characteristics of discontinuity; 3D prediction model;

D O I：

10.1007/s00603-002-0039-8

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

In block caving, it is important to estimate the cavability of an ore body. This study proposes a new three dimensional (3D) model for predicting the characteristics of ore fragmentation in block caving, which is based on the Monte Carlo simulation technique. In this paper, the following subjects are discussed: sampling methods of discontinuity, 3D modeling algorithms and conceptualization for analyzing the distribution of discontinuities. In addition, the influence of each modeling parameter on the distribution of ore fragmentation was analyzed. The characteristics of ore fragmentation in a Northern China underground copper mine are used as a case study. Based on the methods discussed here, a software system named "MAKEBLOCK" was developed for analyzing the characteristics of discontinuities in an ore body and predicting the size distribution of ore fragments in block caving. The ore fragmentation attained by using this 3D model is in a good agreement with the field fragmentation measurements.

引用

页码：121 / 142

页数：22

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