河套平原浅层地下水动态监测网优化设计

doi:10.13278/j.cnki.jjuese.201504203

摘要/Abstract

摘要：

河套平原的地下水动态监测网存在监测井空间布局不合理的问题,限制了地下水研究工作的进一步深入.采用水文地质分析法和克里金插值法,并结合实际情况对河套平原的浅层地下水监测网络进行了优化设计.地下水动态影响因素分区图的编制主要考虑了地貌、包气带岩性、浅水位埋深、含水层渗透系数、年均降水量、年均蒸发量以及地下水开采模数7个因子.结果表明,优化设计的监测网共有监测井428眼,优化后Kriging插值误差标准差为2.53~10.99 m,比优化前(2.75~27.00 m)显著降低,这说明优化设计的监测网精度有很大提高.此外,优化后的监测网不仅能够对河岸带、断裂带、咸淡水交互带、地下水降落漏斗区等关键地段的水位实施监测,还能够满足不同地区对监测井密度的需求,具有一定的参考和实践价值.

关键词: 地下水监测, 优化设计, 克里金插值, 水文地质分析

Abstract:

Groundwater dynamic monitoring network in Hetao plain faces the problem of the unreasonable layout of monitoring wells. This limits the further research of the groundwater environment. Through the analysis of the hydrogeology and kriging interpolation, connecting with the actual situation, the shallow groundwater monitoring network in Hetao basin is optimally designed. Geomorphology, lithology, shallow groundwater depth, permeability coefficient, average annual precipitation, average annual evaporation, and groundwater mining modulus are considered to map the groundwater dynamic influence factor zoning. The results show that the optimum monitoring network has 428 wells; and the kriging interpolation error standard deviation of that is 2.53-10.99 m, significantly decreased compared to the former deviation (2.75-27.00 m). It shows that the monitoring precision of the optimized network has made a great progress. In addition, groundwater dynamic monitoring of the key areas such as riparian zone, fault zone, brackish-water interaction zone and drawdown funnel area can be made by the optimum monitoring network. It can also meet the needs of monitoring well density in different areas practically.

Key words: groundwater monitoring, optimization design, kriging interpolation, hydrogeological analysis

中图分类号:

P641.123

余楚, 张翼龙, 孟瑞芳, 曹文庚. 河套平原浅层地下水动态监测网优化设计[J]. 吉林大学学报(地球科学版), 2015, 45(4): 1173-1179.

Yu Chu, Zhang Yilong, Meng Ruifang, Cao Wengeng. Optimization Design of the Shallow Groundwater Dynamic Monitoring Network in Hetao Plain[J]. Journal of Jilin University(Earth Science Edition), 2015, 45(4): 1173-1179.

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