A method for estimating rock mass joint size using borehole camera technique

WANG Jin-chao; WANG Chuan-ying; TANG Xin-jian; HU Sheng; HAN Zeng-qiang; WANG Yi-teng

doi:10.16285/j.rsm.2017.09.030

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A method for estimating rock mass joint size using borehole camera technique

更新时间：2026-06-25

- A method for estimating rock mass joint size using borehole camera technique
- Vol. 38, Issue 9, Pages: 2701-2707(2017)
- 作者机构：
  
  1. 中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北,武汉,430071
  2. 中国科学院大学,北京,100049
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.09.030
  CLC： TU452
- Online First：05 June 2018，
  
  Published：2017
- 稿件说明：
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WANG Jin-chao, WANG Chuan-ying, TANG Xin-jian, et al. A method for estimating rock mass joint size using borehole camera technique[J]. 2017, 38(9): 2701-2707.
DOI：

WANG Jin-chao, WANG Chuan-ying, TANG Xin-jian, et al. A method for estimating rock mass joint size using borehole camera technique[J]. 2017, 38(9): 2701-2707. DOI： 10.16285/j.rsm.2017.09.030.

摘要

目前，确定岩体节理大小通常是根据岩体暴露区域的节理迹长进行估算，往往因岩体暴露区域的局限性而影响估算结果。以钻孔内节理特性为研究对象，尝试进行岩体节理大小估算，首先通过钻孔摄像技术获取地质钻孔内节理的倾向和倾角信息，建立所研究深度范围内的节理平面方程，形成钻孔之间节理面的连通判断准则，从而确定节理面的迹线长度，同时构建出节理迹线均值函数，最后根据节理面迹长与大小之间的对应关系，估算出岩体节理的大小，从而形成一种利用钻孔内的节理特性来估算岩体节理大小的方法。将该方法应用于张家湾铁矿的地下采选联合工程，其估算结果准确可靠。

Abstract

At present

determining the rock joint size is usually based on the joint trace length in exposed rock area

but the estimated results are often affected by the limited area of exposed rock mass. In this research

we try to estimate the rock mass size according to the joint characteristics around a borehole. At first

the joint and dip information in a geological drill is obtained through the borehole camera technology

a equation for joint plane is developed in the range of drilling depth. Based on this equation

the connectivity criterion among the joint surfaces is constructed and the joint surface trace length is determined; subsequently

the trace mean function of trace length. Finally

the size of rock joint is estimated according to the relationship between trace length and the rock mass size.This method is applied to the combined underground mining-ore dressing of Zhangjiawan iron ore

showing its reability and high accuracy.

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Related Institution

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中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室，湖北武汉 430071 2.长江勘测规划设计研究有限责任公司

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