J4 ›› 2010, Vol. 40 ›› Issue (3): 610-616.

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Groundwater Numerical Simulation of Muti-Aquifers in the First Exploiting Region of Baoqing Open-Cast Coal in Heilongjiang Province

FANG Zhang1, XIAO Chang-lai1|YAO Shu-rong2, MA Zhe1,XU Bin1,3, REN Yan-ru1,4   

  1. 1.College of Environment and Resources, Jilin University, Changchun 130026, China;
    2.Heilongjiang Province Coalfield Geology 110 Survey Team, Shuangyashan, Heilongjiang 155100,China;
    3.Baicheng Water Resources Bureau|Baicheng, Jilin 137000, China;
    4.Guanyinge Reservoir Administrative Bureau in Liaoning Province, Benxi|Liaoning 117100, China
  • Received:2009-06-29 Online:2010-05-26 Published:2010-05-26

Abstract:

Yield of groundwater and its decline process are key issues for the exploitation time of the open-cast coal. Groundwater numerical model including three aquifers and two aquitards is built using GMS in the Baoqing open-cast coal in the Eastern Heilongjiang Province. The model is calibrated and validated according to measured data. Considering both economic benefits and dewatering effect，the flow field of different schemes are predicted by the model. Based on the result the best scheme of dewatering well design (86 dewatering wells) and the corresponding yield of abstraction(95 718.84 m3/d) are determined. The process of groundwater level decline in the first exploiting region is presented too, the average decline speed in 0.17 m/d. The result provides technical support for solving practical key problems in dewatering projects such as number of dewatering wells and their location design, yield of single well, and the prediction of decline speed of groundwater level.

Key words: open-cast coal, muti-aquifers, numerical simulation, groundwater exploitation prediction, groundwater

CLC Number: 

  • P641.8
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