顶板灰岩抽采系统对矿井通风系统影响的研究

Influence of Gas Drainage of Roof Limestone on Mine Ventilation System

义棠煤业矿井瓦斯主要赋存在煤层顶板灰岩裂隙内,以游离状态为主,建立地面瓦斯抽采系统抽采之后,矿井出现总回风小于总进风的情况,给通风管理带来困扰。为科学系统地解释这种现象,分析义棠煤业矿井通风系统历史数据及井下实际情况,综合各方面因素提出了灰岩瓦斯抽采系统影响机理,并建立相关研究模型。通过实际测量数据及计算分析,得出较为相符的数据结果,为之后有针对性地采取措施提供了科学可靠的依据。

The gas,mainly in free state,exists in the fissures of roof limestone of the coal seam in Yitang Mine.After the establishment of surface gas drainage system,the total return air volume is less than the total inlet air.In order to explain the phenomenon scientifically,the historical data and conditions of the underground ventilation system were analyzed.Taking all factors into consideration,an influence mechanism of limestone gas drainage system was put forward and research models were established.With actual measurement data and calculation,more consistent data were obtained,which could provide a scientific and reliable basis for targeted measures in future.