Preliminary application of Tunnel Seismic Prediction (TSP) technology in mineral exploration in the Yangla copper mine, Yunnan Province
Received date: 2023-04-08
Online published: 2024-12-19
Copyright
In the prospecting in metal mine tunnel, the exploration accuracy of electrical, magnetic and electromagnetic methods rather than reflection seismic are affected electromagnetic interference. With the simplification of construction technology and the gradual reduction of data processing costs, seismic exploration can be fully utilized in the prospecting of metal mine tunnels because of its advantages of large detection depth, strong signal penetration and high resolution. Therefore, TSP technology based on seismic wave reflection wave method is applied to the Yangla copper mine in Yunnan province mineral exploration. The working principle, data acquisition and data interpretation of TSP technology are briefly described. Combined with the geological data of the mining area, the results of rock mechanics parameters, reflection horizon map and three-dimensional velocity rendering map are analyzed, and the location and spatial distribution of fault fracture zone, lithologic interface and ore body are finally predicted. Through the experimental study of tunnel prospecting in the Yangla copper mine area, it is shown that this technology has broad prospects in tunnel prospecting of metal mines.
JiZhan ZHU , YuZhao HU , ShiLin WU , XinFu WANG . Preliminary application of Tunnel Seismic Prediction (TSP) technology in mineral exploration in the Yangla copper mine, Yunnan Province[J]. Progress in Geophysics, 2024 , 39(5) : 1989 -2001 . DOI: 10.6038/pg2024GG0638
图1 西南三江地区构造单元简图(a)与羊拉矿床地质简图(b)(据李波等,2021)Figure 1 Structural unit diagram (a) and geological diagram (b) of Yangla Cu deposit in Sanjiang area, Southwest China (after Li et al., 2021) |
图2 TSP技术方法原理(据赵轶凡,2018)Figure 2 TSP technical method principle (after Zhao, 2018) |
图3 TSP303Plus观测系统布设图(据罗卫华等,2006)Figure 3 Layout of TSP303Plus observation system (after Luo et al., 2006) |
表1 观测系统布设参数Table 1 Observation system layout parameters |
| 名称 | 检波器孔 | 炮孔 |
| 深度 | 2 m | 1.5 m |
| 直径 | 50 mm钻头钻孔 | 40 mm钻头钻孔 |
| 高度 | 离坑道底高1.35 m | 离坑道底高1.1 m |
| 数量 | 坑道左、右帮各1个 | 左帮24个炮孔,右帮19个炮孔 |
| 定向 | 垂直坑道轴向,上倾5°~10° | 垂直坑道轴向,下倾10°~20° |
| 位置 | 3150中段45线穿脉Z4测量点 | 第1炮点离同侧检波器15 m,炮间距1.5 m |
图10 三维纵波速度渲染异常体的纵剖面切片图(a)与水平切片图(b)Fig 10 Longitudinal section (a) and horizontal section (b) of 3D P-wave velocity rendering abnormal body |
云南迪庆矿业开发有限责任公司在坑道数据采集时提供了支持,瑞士Amberg公司地球物理工程师Dirk Krueger博士在数据处理时提供了帮助,审稿专家和编辑部专家提出了宝贵意见,在此深表谢意.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/
| 〈 |
|
〉 |