地质与勘探2024，Vol.60Issue(6)：1142-1152,11.DOI:10.12134/j.dzykt.2024.06.005
甘肃早子沟金矿典型岩石微观结构特征及其渗透性研究
Microstructure Characteristics and Permeability on the Typical Rocks of the Zaozigou Gold Mine in Gansu Province
叶美娜 1仲海书 2张震 2李保珠 3田向盛 2张英2
作者信息
- 1. 昆明理工大学国土资源工程学院,云南 昆明 650000
- 2. 甘肃省地矿局第三地质矿产勘查院,甘肃兰州 730000
- 3. 昆明理工大学国土资源工程学院,云南 昆明 650000||自然资源部高原山地地质灾害预报预警与生态保护修复重点实验室,云南 昆明 650000
- 折叠
摘要
Abstract
Scanning electron microscopy(SEM)is commonly applied in geotechnical engineering research.By scanning and imaging the microstructures of rock samples,it is possible to obtain magnified images of the rock surface topography,which can be used to study the permeability of rocks.The utilization of SEM to observe the microstructural characteristics of ores can assess their permeability,which will provide a basis for mining operations and mine drainage work.This work conducted SEM experiments on the pores and fractures of rocks from the Zaozigou gold deposit in Gansu Province,and obtained microscopic images of the mine rocks.The MATLAB software was utilized for programming to perform binary processing on electron microscopy scanning images,and the optimal threshold Tb was obtained.Numerical simulation was also conducted by using the COMSOL Multiphysics software,in order to observe the seepage pathways and connectivity of mine rocks.Results indicate that the analysis of SEM images for mine rocks from the Zaozigou gold deposit corresponds well with the theoretical calculations.Different rock types from this deposit generally exhibit low porosity and permeability.For different rock samples with similar porosity,fractal dimension can be used as an effective indicator to distinguish their pore structure complexity.The numerical simulation of micro pore permeability using the COMSOL Multiphysics software shows poor connectivity of rock samples,resulting in poor water yield in the regional strata.关键词
电镜扫描/渗透性/MATLAB/Image-Pro-Plus软件/早子沟金矿/甘肃Key words
electron microscopy scanning/permeability/MATLAB/Image-Pro-Plus software/Zaozigou gold deposit/Gansu Province分类
天文与地球科学引用本文复制引用
叶美娜,仲海书,张震,李保珠,田向盛,张英..甘肃早子沟金矿典型岩石微观结构特征及其渗透性研究[J].地质与勘探,2024,60(6):1142-1152,11.
