西安科技大学学报2025，Vol.45Issue(5)：867-875,9.DOI:10.13800/j.cnki.xakjdxxb.2025.0503
陕北含水煤层水文地质特征及矿井涌水规律
Hydrogeological characteristics of coal seam aquifer and the law of mine water inflow in northern Shaanxi
摘要
Abstract
To investigate the causes of water hazards induced by coal mining disturbance in Yuhengbei Mining Area,a detailed analysis has been made of water inflow patterns during shaft construction,road-way development,and panel mining based on the hydrogeological conditions of the water-bearing coal seams and their roof strata.The findings revealed that:The local absence of strata in the fourth member of the Yan'an Formation and the well-developed fractures in No.2 coal seam have created an aquifer with substantial static reserves.During the shaft construction stage,the freezing method is adopted to block the hydraulic connections between the aquifer and shafts,resulting in zero water inflow.Drainage and depressurization formed a cone of depression in main aquifers,with shaft inflow primarily from dy-namic aquifer recharge,showing steady increase.During the second phase construction stage of the coal mine,the initial exposure of No.2 coal seam aquifer caused abrupt water inflow surges due to fracture development and large static reserves.Pre-drainage depressurization of No.2 coal seam aquifer estab-lished a cone of depression around shaft stations,preventing sudden inflow increases.During panel min-ing,the relatively high water yield of direct roof aquifers caused continuous inflow growth with expan-ding goaf areas.Advance drainage of panel roof water combined with adequate drainage capacity en-sured safe mining operations.The construction and coal mining operations in the Yuhengbei Mining Ar-ea are primarily threatened by water-rich coal seams and water-bearing roof strata.Studying the hydro-geological characteristics and water inflow patterns under various control measures provides a scientific guidance for the water hazard prevention during coal seam mining in Yuhengbei Mining Area.关键词
含水煤层/裂隙/涌水规律/水文地质条件/榆横北区Key words
coal seam aquifer/fractures/water inflow law/hydrogeological conditions/Yuhengbei Min-ing Area分类
矿业与冶金引用本文复制引用
杨建,蒲悦,杨磊,贺亮亮,郭翔,李贵娟,蔡玥..陕北含水煤层水文地质特征及矿井涌水规律[J].西安科技大学学报,2025,45(5):867-875,9.基金项目
国家自然科学基金项目(42330808) （42330808）
陕西省重点研发计划(2022SF-046) （2022SF-046）
陕西煤田地质集团有限公司重大科技专项(SMDZ-2023ZD-5) （SMDZ-2023ZD-5）
