摘要
磨槽江矿区位于陡峻的半山腰陡坡上,为裂隙直接充水的矿山,含水介质为泥盆系砂岩、寒武系砂岩与泥岩互层,主要充水含水层的富水性为弱—中。为了预测矿坑涌水对未来采矿活动的威胁,利用抽水、注水和压水试验等方法来确定含水层的渗透系数;采用耦合了达西流和非达西流于一体的GMS软件进行地下水流场三维数值模拟,运用MODFLOW中的排水沟渠子程序包及河流子程序包模拟冲沟,通过挖空单元体模拟窿道的现状分布和未来开采后逐年空间变化特征,根据计算结果预测各矿坑在未来开采期间的涌水量。结果表明:各平窿口预测的涌水量与实际观测值很相近,说明运用MODFLOW中的排水沟渠子程序包及河流子程序包来模拟山区冲沟的方法是可行的。
Mocaojiang minefield,half way up at a steep mountain slope,belongs to direct-water-filled mine-field.The water-bearing medium are sandstone of Devonian system,interlayer of sandstone and mudstone of Cambrian system.The grades of the groundwater richness for the aquifers range from“weak”to “medium”.In order to find out the danger from groundwater outflow into mine galleries during mining activities in the future, pumping tests,water injection tests and water pressure tests were carried out to determine the permeability coef-ficients of the aquifers.Then GMS software coupled with Darcy flow and non-Darcy flow was used in three-di-mensional numerical simulation.Meanwhile,ditch package and river subroutine package in MODFLOW was al-so applied to simulate the mountain gullies.The distribution of mine galleries at present and in the future were also simulated by digging out some element units in network according to mining situation and mining designs. At last,mine water drainage from every gallery was predicted after calculation.The calculation shows that cal-culated drainages are very close to the observed ones.This phenomenon shows that it is possible to use itches package and rivers subroutines package in MODFLOW to simulate gullies at present technology.
出处
《桂林理工大学学报》
CAS
北大核心
2015年第1期60-66,共7页
Journal of Guilin University of Technology
基金
国家自然科学基金项目(41302197)
广西高等学校高水平创新团队及卓越学者计划项目
关键词
矿坑涌水量
预测
数值模拟
GMS软件
mine water drainage
prediction
numerical simulation
GMS software
作者简介
黎容伶（1987-）,女,硕士研究生,研究方向：水文地质工程地质勘察,569986696＠qq.com.
蓝俊康,博士,教授,lanjk＠163.com.
