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大水矿山由于含水层通常难以疏干,矿山生产常采取边疏干含水层边开采的带压开采方式进行,此类矿山实际开采环境是由排水系统及地下水系统组成,即排水-地下水的开采环境(DrainingGroundwater Mining Environment,DGME)系统。为此,根据系统论的原理,构建了大水矿山排水-地下水开采环境系统动态随机模型,并以模型为基础分析了系统水位随机变化的影响因素。结果表明:1)DGME系统动态随机模型可反映出矿山地下水系统与排水系统之间的相互关系;2)矿山地下水位变化是Wiener过程,臼水位分布符合正态分布,其数字特征取决于系统输入输出流量差的均值及方差;3)系统当前风险状态受短期内系统水位变化影响,超出一定时域,系统风险状态不可预知。
Large water mines Because the aquifers are usually difficult to dry, the mining production is often carried out by the exploitation of side-drained aquifers under pressure mining methods. The actual mining environment of such mines is composed of drainage systems and groundwater systems, namely drainage and groundwater extraction Environment (DrainingGroundwater Mining Environment, DGME) system. Therefore, according to the principle of system theory, a dynamic stochastic model of Drainage and Groundwater Exploitation Environment System of Dashui Mine is constructed. Based on the model, the influencing factors of stochastic change of system water level are analyzed. The results show that: 1) The dynamic stochastic model of DGME system can reflect the relationship between mine groundwater system and drainage system; 2) The change of mine groundwater level is Wiener process, the water level distribution is in accordance with the normal distribution, and its digital characteristics depend on the system input 3) The current risk status of the system is affected by the change of the system water level in a short period of time, beyond a certain time domain, the system risk status is unpredictable.