辛安泉水流量衰减原因分析

辛安泉是山西省第二岩溶大泉，泉域面积为10950km^2，泉水多年平均流量为9．64m^3/s，是长治市的主要供水水源。监测资料显示，泉水流量总体上呈逐年减小的趋势。在对泉域内地质、水文地质条件及降雨量等分析基础上，建立了泉流量与降雨量间的相关关系，阐明了降雨量的变化是影响泉水流量的主要原因。

Analysis on the Causes of the Decrease in the Flow Capacity of Xin' an Spring

Xin'an Spring is the second largest Karst spring in Shanxi Province with the area of about 10 950 km2. For many years, as the main water supply recourse of Changzhi City, Xin'an Spring has an average flow capacity of 9.50 cubic meters per second. Unfortunately, as shown on the observation data, decreasing has been the main trend of the flow capacity of Xin'an Spring. With comprehensive study and analysis on those factors, such as the geological conditions, hydro-geological conditions, and precipitation, etc., the correlation between the flow capacity and the precipitation has been established, and the conclusion is obtained that the precipitation is the main factor of influencing the flow capacity of Xin'an Spring.