基于正态检验的排水型隧道排水水质特征的统计与预测分析

Statistics and Prediction Analysis of Drainage Water Quality Characteristics of Drainage Tunnel Based on Normal Test

地下水对隧道混凝土的腐蚀性及其空间分布的变化规律是岩土工程重要的研究内容。以青岛某隧道的排水水质为研究对象,系统分析了隧道排水的的水质特征以及不同浓度的概率分布,并对其腐蚀性进行评价。结果表明,PH值、氯化物、硫酸盐和浓度正态性检验呈正偏态分布,浓度服从正态分布。从统计分析结果来看各水质指标波动范围不大,各取水点的水质差别不大,腐蚀性评价基本为微腐蚀性,并估计了概率为95%时青岛地区隧道排水水质的参考值范围。

The corrosiveness of groundwater to tunnel concrete and the change of its spatial distribution are important research contents in geotechnical engineering.Taking the drainage water quality of a section in Qingdao as the research object,the water quality characteristics of the section and the probability distribution of different concentrations are systematically analyzed,and the corrosiveness is evaluated.The results show that the pH value,chloride,sulfate and concentration normality test showed a positive skew distribution,and concentration followed a normal distribution.According to the statistical analysis results and the fluctuation range of each water quality index is not large,the water quality of each water intake point is not much different,the corrosion evaluation is basically slightly corrosive,and the reference value range of the tunnel drainage water quality in Qingdao area is estimated at a probability of 95%.