【摘要】 为了探明巴拉素煤矿煤炭开采与地表径流量减少之间的关系,在对项目调查评价区水文地质条件分析的基础上,利用GMS地下水数值模拟软件建立评价区地下水数值模型,定量分析评价区内主要地表径流量随煤炭开采地下径流补给衰减变化曲线,结果表明:各河谷地下水总溢出量衰减率均小于12.00%,且在煤炭开采第49年后,地表径流量衰减明显上升,其主导因素为评价区内煤炭开采引起地表沉陷明显下降,第四系潜水水位抬升,造成无效蒸发量增大,从而造成补给地表水体水量减少。更多还原

【Abstract】 In order to make clear the relationship between coal mining and surface runoff reduction in Balasu Coal Mine,based on the analysis of hydrogeological conditions in the project investigation and evaluation area,the GMS underground water numerical simulation software was used to establish the underground water numerical model in the evaluation area,quantitative analysis and evaluation of the attenuation change curve of main surface runoff that change with the underground runoff recharge from coal mining. The results show that the attenuation rate of underground water spillover is less than 12.00% in all valleys,and after 49 years of coal mining,the attenuation of surface runoff increases obviously. The main factors are surface subsidence caused by coal mining,and the rise of quaternary phreatic water level,which causes the invalid evaporation to increase,thereby,the amount of water supplied to the surface runoff is reduced.更多还原