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金川镍矿是我国著名的有色金属矿山,工程地质条件复杂,矿山开采难度大。近年来由于矿山开发的深入,开采强度、深度、广度的增加,导致了各类工程地质问题恶化。地应力的测量与研究是进行工程地质问题研究的基础,本文总结了主力矿区二矿区地应力研究的历史,根据最新的实地测量数据,对于二矿区的地应力进行了系统研究与分析,总结了最新的矿区地应力分布规律,更新了应力与深度的计算公式,通过分析,1 000m水平为垂直应力逐渐占据主导地位的过渡带,主应力与最大水平应力增加的幅度变缓,带内的应力状况将变得十分复杂,同一深度,不同工程区域可能会出现不同的应力状态,并且随着最大主应力与最小主应力差值的增加,其剪应力将逐渐加大,这对于地下工程施工和采矿都是十分不利的。
Jinchuan Nickel Mine is a famous non-ferrous metal mine in China, with complicated engineering geological conditions and difficult mining. In recent years due to the deepening of mine development, mining strength, depth and breadth increase, leading to the deterioration of various types of engineering geological problems. The measurement and research of geostress is the foundation of engineering geology research. This paper summarizes the history of geostress research in No.2 mining area of main mining area, systematically studies and analyzes the geostress of No.2 mining area according to the latest field measurement data, The latest stress distribution of mining area, updated the formula of stress and depth, through the analysis, 1 000 m level is the vertical stress gradually dominated the transition zone, the main stress and the maximum level of stress increases slowly, the band stress The situation will become very complicated. At the same depth and in different engineering areas, different stress states may appear, and as the difference between the maximum principal stress and the minimum principal stress increases, the shear stress will gradually increase. This is of great significance to the underground construction and Mining is very negative.