改变通风方法条件下斜井旧水平贯通巷道内有害气体的防治

Prevention and Control of Harmful Gases in Old Horizontal Through-lane of Inclined Shafts Under Changing Ventilation Method

摘要: 为防止负压通风引起贯通巷内有害气体排出,通过以贯通巷道隔离带设置和密闭四周围岩裂隙封堵为基础,对原有贯通巷隔离带设置和充填以及密闭四周围岩裂隙封堵的方案进行治理。结果表明,在排查出贯通巷密闭具体信息情况和在不破坏原有密闭的前提下,采取贯通巷道隔离带设置和密闭四周围岩裂隙封堵,能保证贯通巷内有害气体在负压通风作用下不外溢。

Abstract: To prevent the discharge of harmful gases in the through-lane caused by negative pressure ventilation, the scheme of setting and filling original through-lane isolation belt and the sealing of surrounding rock fissure are carried out based on the installation of through-lane isolation belt and the sealing of the surrounding rock fissures. The research results show that under the premise of detecting the specific information of the through-lane sealing and without destroying the original sealing, the through-lane isolation belt setting and sealing surrounding rock fissures can be used to ensure that the harmful gas in the tunnel will not overflow under the action of negative pressure ventilation.