桂林理工大学学报2016，Vol.36Issue(4)：681-687,7.DOI:10.3969/j.issn.1674-9057.2016.04.006
广西花山花岗岩体风化带的渗透系数
Permeability coefficients of weathering zones in Huashan granite of Guangxi
摘要
Abstract
Huashan granite weathering zone is rich in rare earth ore.In the future extraction process,the local groundwater environment may be seriously polluted.In order to evaluate the risk of groundwater pollution during mining,the permeability coefficients of the weathering zones of Huangshan granite are needed to test comprehensively and tostudy systematically.Comprehensive tests are carried out by means of water seepage tests on the surface and pumping tests and water pressure tests in boreholes.Meanwhile,long-term monitoring of groundwater is carried out,so that the permeability coefficients of the weathering zones and their partitions are obtained through GMS numerical simulation.The results indicate that the permeability coefficients of the rock stratum in the weathered zone of granite are getting smaller and smaller as the weakening of weathering from the surface to the depths.The permeability coefficients of each weathering zone are as following:residual soil layer 2.3-3.80 m/d,completely weathering layer 0.50-2.30 m/d,strongly weathering layer 0.01-0.50 m/d,moderate weathering layer 0.003-0.01 m/d,weak weathering layer 8.64 × 10-5-0.003 m/d,unweathered layer ≤ 8.64 × 10-5 m/d.关键词
花岗岩/风化带/渗透系数/数值模拟Key words
granite/weathering zone/permeability coefficient/numerical simulation分类
天文与地球科学引用本文复制引用
李有光,蓝俊康,黎容伶,杨标..广西花山花岗岩体风化带的渗透系数[J].桂林理工大学学报,2016,36(4):681-687,7.基金项目
国家自然科学基金项目(41302197) （41302197）
广西高等学校高水平创新团队及卓越学者计划项目 （）
