摘要
矿井水害防治的关键在于明确威胁矿山的主要含水层特征,并提出适配防治措施。为精准掌握灵新煤矿宝塔山砂岩含水层水文地质条件,保障矿井安全生产,对此开展井下单孔与多孔放水试验。结果显示,单孔放水量平均值为40 m^(3)/h,多孔放水量平均值为19 m^(3)/h,水压从2.3 MPa下降至0.8 MPa,底板水可疏性明显。通过分析放水试验中水量和水压变化及水样中常规离子浓度数据,获得了水文地质参数,确定了水文地质状况并据此验证了疏水降压的可行性。研究表明宝塔山砂岩含水层富水性较弱,本次试验所得水文地质资料为矿井水害防治提供了一定科学依据。
The key to preventing and controlling mine water disasters lies in clarifying the characteristics of the main aquifers that threaten the mine and proposing appropriate prevention and control measures.To accurately grasp the hydrogeological conditions of the Baotashan Sandstone Aquifer in Lingxin Coal Mine and ensure the safe production of the mine,underground single-hole and multi-hole dewatering tests were conducted.The results indicate that the average water discharge of single holes is 40 m^(3)/h,and the average water discharge of multi-holes is 19 m^(3)/h.The water pressure decreased from 2.3 MPa to 0.8 MPa,and the drainability of the floor water is significant.By analyzing the changes in water discharge and water pressure during the dewatering tests,as well as the conventional ion concentration data in water samples,hydrogeological parameters were obtained,the hydrogeological conditions were determined,and the feasibility of dewatering and pressure reduction was verified accordingly.This study shows that the Baotashan Sandstone Aquifer has low water yield capacity.The hydrogeological data obtained from this test provide a scientific basis for the prevention and control of mine water disasters.
作者
王建泽
赵子敬
马金林
赵宝峰
WANG Jianze;ZHAO Zijing;MA Jinlin;ZHAO Baofeng(Lingxin Coal Mine of China Energy Ningxia Coal Industry Co.,Ltd.,Lingwu 750400,Ningxia,China;CCTEG Xi'an Research Institute,Xi'an 710000,Shaanxi,China)
出处
《资源信息与工程》
2025年第5期72-78,83,共8页
Resource Information and Engineering
基金
国家自然科学基金(41807221)
陕西省自然科学基础研究计划(2023-JC-ZD-27)。
关键词
放水试验
宝塔山砂岩
水量
水压
水文地质参数
dewatering test
Baotashan Sandstone
water discharge
water pressure
hydrogeological parameters
