During the exploration phase of Hongshaquan No.1 open-pit coal mine,the large well method and average precip-itation method were used to predict the water inflow of the open-pit mining site,which deviated significantly from the meas-ured water inflow.We analyze the deviation based on the hydrogeological conditions of the mining field,the composition and variation of the water inflow in the open-pit mining area,and the degree of coal mining.The results show if the annual aver-age precipitation including that of the nearby mountain is adopted,which is actually a large-ranged one,the predicted value of the water inflow world be larger.The hydrogeological analogy method is used to predict the water inflow in the next three years,with relatively small errors.The predicted results provide an important reference for the water prevention and control of the Hongshaquan No.1 open-pit coal mine,and are of better guidance for safety production.
关键词
露天煤矿/露天采场涌水量/偏差分析/大井法/平均降雨量法/水文地质比拟法
Key words
open-pit coal mine/open-pit water inflow/deviation analysis/large well method/average rainfall method/hydro-geological analogy method
维普
万方数据