Protection of the Liuzheng Water Source: A Karst Water System in Dawu, Zibo, China

Abstract

The Dawu water source is a rare, large-scale groundwater source located in northern China. The water supply function from this water source has, however, been lost due to anthropogenic pollution. In order to fully utilize valuable groundwater resources, a new water source of urban domestic water in Liu Zheng is planned. In this study, a tracer test and a numerical simulation method are used to examine the hydraulic connection between the Liuzheng water source and the Wangzhai industrial park; to optimize the exploitation layout of the Liuzheng water source and Dawu water source; and to propose the extent of the Liuzheng water source protection area. Results indicate that: (1) Karst development in the study area is uneven, and the Wangzhai area is a recharge area of the Liuzheng water source; (2) it is predicted that the groundwater flow field will not be significantly changed when a groundwater volume of 150,000 m3/day is exploited from the Liuzheng water source; (3) it is predicted that the proposed chemical park in Wangzhai will gradually pollute to the groundwater in the northern area of Liuzheng; and (4) results using the empirical formula method and the numerical simulation method indicate that the area of the primary protection area of the Liuzheng water source is about 0.59 km2, and the area of the secondary protection area is about 14.98 km2. Results from this study provide a certain technical basis for the exploitation and protection of groundwater in the Liuzheng water source.

Hydrogeochemistry Evidence for Impacts of Chemical Acidic Wastewater on Karst Aquifer in Dawu Water Source Area, Northern China

“…The northern area is a piedmont inclined plain, with the plain is covered by Quaternary sediments. The water-bearing rocks are mainly the pore water-bearing rocks of the upper Quaternary loose rocks and the fissure karst water-bearing rocks of the lower Ordovician carbonate rocks [24,30]. The groundwater exploitation is mainly concentrated in the carbonate fractured karst aquifer.…”

“…The karst aquifer is mainly recharged by precipitation in the southern mountainous and the leakage from the eastern Zihe River [24]. Karst groundwater generally flows northward and northeastward until it is blocked by the Carboniferous-Permian coal-bearing strata in the north, forming a huge underground reservoir with an exploitation volume accounting for about 350,000 m 3 /day [30].…”

Spatial and Temporal Distribution of Groundwater in Open-Pit Coal Mining: A Case Study from Baorixile Coal Mine, Hailaer Basin, China

“…Long-term drainage of groundwater in open-pit coal mining will lead to changes in groundwater flow near the stope [18,23] and formed groundwater drawdown funnels in the mining pits [13,15,29,37]. Through long-term observation of groundwater, the influence of open-pit coal mining on groundwater can be studied [11], which is helpful for groundwater management and protection [11,12,[38][39][40][41][42][43][44][45]. Long-term observation of open-pit groundwater in arid areas generally shows a downward trend in groundwater level [15,46].…”

Structure identification of a karst groundwater system based on high-resolution rainfall-hydrological response characteristics

“…Thus, identifying the development degree of deep karst, as opposed to shallow karst, in this region is much more challenging. As such, determining the karst groundwater system's structural characteristics and type of water-bearing medium is imperative for engineers to design safe and appropriate local construction practices and for decision-makers to determine efficient use of the karst groundwater resources (Yu et al, 1990;Wu et al, 2009;Tian et al, 2016;Chongxi et al, 2017;Zhu et al, 2019).…”