Applying a statistical method to streamflow reduction caused by underground mining for coal in the Kuye River basin

作者：Li Shu^*; Chen YuanFang; Li ZhiJia; Zhang Ke

来源：Science China Technological Sciences, 2016, 59(12): 1911-1920.

DOI：10.1007/s11431-016-0393-4

• underground mining for coal
• streamflow
• MK-P
• SWAT
• statistical method

Streamflow in the Kuye River basin has been sharply reduced by the effects of climate change and human activities. Since 1997, the intensification of coal mining has resulted in substantial reductions to streamflow alongside an ever-increasing demand for water. In this study, we present a derived statistical method, incorporating the Mann-Kendall and Pettitt method (MK-P) and the Soil and Water Assessment Tool (SWAT), and apply it to estimating the streamflow reductions caused by underground mining for coal in the Kuye River basin. The results show that underground mining is an important cause of the streamflow reductions observed since 1997, being responsible for reductions of 21.15 mm/yr (similar to 56% of the total) during 1997-2009. The results of the SWAT simulation were assessed by several performance criteria: Nash-Suttcliffe Efficiency (N-SE), correlation coefficient (R-2), relative error (RE), P-factor and R-factor. The close match between the simulations and observed data supports the reasonability of our findings. We suggest that engineering strategies be adopted to limit streamflow loss into goafs via fractured zones in the coalfield.

• 出版日期2016-12
• 单位黄河水利委员会黄河水利科学研究院; 河海大学