关键词: 地下工程, 山体地下水位, 数学统计, 渗流, 影响因子

Abstract: Groundwater is one of the key factors in underground engineering design, which is related to the stability and structural safety of geotechnical engineering. The large amount of measured data information of groundwater level during operation reflects the operation state and project environment faithfully. So it is very important to evaluate the groundwater distribution and engineering operation security based on these in-site measured data. In this paper, a mathematical model of quantitative analysis of monitoring data is established, and the regression fitting method is used to obtain groundwater distribution and its main influencing factors. Taking the Tianhuangping I pumped storage power station as an example, this paper analyzes and evaluates the groundwater distribution and its seepage influence factors in the project area by using the 20-years operation measured data. The study results in this paper are useful for the analysis of measured data, the distribution and change of groundwater, seepage control effect evaluation, repair plan establishment and operation management.

Key words: underground engineering, mountain ground water level, mathematical statistics, seepage flow, influencing factors