北京市平原区地下水养蓄控高水位及其约束下的地下水库调蓄空间计算

Research about Restricted Groundwater Surface and Regulated Capacity of Groundwater Reservoirs in The Beijing Plain

北京市平原区地下水长期的超量开采导致地下水位持续下降和储量资源大量亏损,并引发了一系列环境地质问题,南水北调工程引水入京为地下水资源蓄养提供了条件,地下水超采困境将逐步得以改善。由于地下水位下降造成的非饱和地下空间受人类干扰明显,恢复地下水位必须考虑人为因素的影响。本文论述了北京平原区(不含延庆)建[构]筑物地下基础与固体废弃物的填埋场对于地下水位上升的制约作用,提出了相应的地下水限制恢复水位,利用克里金插值法绘制出限制曲面。在此基础上,从历史上曾经存在的、由实际地下水开采结构控制的水位流场中,寻找最接近的限制水位作为地下水回升的控高目标,并计算了地下水库中能够用于水资源储存的可恢复调蓄空间。

In the Beijing plain, the groundwater resource and the groundwater surface be decreasing on account of long excessive exploitation, and a series of environmental geology problem have been appearing. South-to-North Water Diversion Project will give a chance for the store of groundwater resource and the plight of long excessive exploitation of groundwater will be improving. The human action markedly disturbed the unsaturated underground space that the fallen surface of groundwater made, and must be considered influence of artificial factors on restoration of groundwater surface. This disquisition discussed that the groundwork of building and the site of filled solid waste be going to constrain the rising of groundwater level in the Beijing plain（excluding Yanqing district）, advanced the restricted groundwater level, drew the restricted groundwater surface by Kriging interpolation method. On this basis, from once existed in history, from the actual structure of the control of groundwater exploitation of water flow field, looking for the nearest pick-up restrictions on groundwater as the water level control of high goals, and calculate a regulated capacity of groundwater reservoir.