云浮市云安区重点建筑石料开采区工程地质特征分析——以某露天石场为例

Analysis of engineering geological features of key building stone mining area in Yunfu City:taking an open⁃air quarry as an example

云浮市云安区重点建筑石料开采区现有矿权数量多、开采规模大,以露天开采形式为主,边坡高度150~375 m。研究区地质岩性主要为黑云母花岗岩、二长花岗岩;受区域地质构造及多期次地质动力作用影响,裂隙显著发育,但优势裂隙存在一定的规律。本次工作搜集整理了多处矿山的工程地质参数,分析了风化岩土体及矿体裂隙发育特征,指出了优势发育裂隙,有利于该区域工程地质安全防治工作。

The key building stone mining areas in Yun′an District,Yunfu City are open pit mines,with large scales and mineral rights,and with 150~375 m slope height.The geology and lithology of the study area are mainly biotite granite and monzonitic granite.Affected by regional geological structure and multiple geodynamics,the regional fissures developed significantly.However,dominant fractures developed in accordance to certain rules.This work collected and collated the engineering geological parameters of many mines,analyzed the fissure development features of weathered rock and soil and ore body in detail,pointed out the dominant developmental fissure,which can provide benefits on engineering geological prevention and control in this area.