基于通风成本的废弃煤矿地下空间可利用性评估  

Availability Evaluation of Underground Space in Abandoned Coal Mines Based on Ventilation Cost

作　　者：周一沫 周文豪 ZHOU Yimo;ZHOU Wenhao(School of Resources and Safety Engineering,Chongqing University,Chongqing 400044,China;State Key Laboratory of Coal Mine Disaster Dynamics and Control,Chongqing 400044,China;Technical Center of Shanxi Lu’an Group,Xiangyuan,Shanxi 046204,China)

机构地区：[1]重庆大学资源与安全学院,重庆400044 [2]重庆大学煤矿灾害动力学与控制国家重点实验室,重庆400044 [3]山西潞安矿务局技术中心,山西襄垣县046204

出　　处：《矿业研究与开发》2021年第1期122-126,共5页Mining Research and Development

基　　金：国家科技重大专项项目(2016ZX05067006-001)。

摘　　要：针对当前废弃煤矿地下空间可利用性评估中存在的数据难获取、指标不统一的问题,提出从通风成本的角度定义评估指标,从而为评估提供初步依据。基于FLUENT构建了矿井自然风压数值模型,通过模拟,得到了拟利用废弃煤矿地下井巷路线全年的自然风压规律。将自然风压能克服通风总阻力的比值定义为评估指标,即自然通风能量占需比γn,并结合地下空间用途给出γn及对应的通风成本等级划分。将该模型应用于重庆某煤矿,结果表明,所研究地下空间路线全年自然风压为81.5Pa~145.4Pa,与不同利用情况下的通风总阻力对比计算γn,认为该地下空间通风成本属于中等,适宜储物。实例证实了该模型具有较好的可操作性和合理性,可以为废弃煤矿地下空间可利用性评估提供参考。Aiming at the problem that the availability evaluation of underground space in abandoned coal mines is difficult to obtain the data and the indicators are not uniformed,the evaluation indicators from the perspective of ventilation cost were proposed,so as to provide a preliminary basis for the evaluation.A numerical model was built by FLUENT.Through the simulation,the annual natural wind pressure laws of the roadways in abandoned coal mine were obtained.The ratio of natural wind pressure to total ventilation resistance is defined as the evaluation index,that is,the ratio of natural ventilation energyγn.Combined with the use of underground space,the grade classification ofγnand corresponding ventilation cost was given.The model was applied to a coal mine in Chongqing.The results show that the annual natural wind pressure of underground space route is about 81.5 Pa~145.4 Pa.Compared with the total ventilation resistance under different utilization conditions to calculateγn,it is considered that the ventilation cost of the underground space is medium and suitable for storage.The example proves that the model has a good operability and rationality,which can provide reference for the availability evaluation of underground space in abandoned coal mines.

关 键 词：废弃煤矿 地下空间 自然风压 气固耦合 可利用性评估 

分 类 号：TD98[矿业工程—选矿]