通排风系统中^(239)PuO_2气溶胶微粒的流动特性

运用计算流体动力学(CFD)方法模拟研究了事故状态下有人员工作时,239PuO2微粒在不同工况下的流动特性及其粒子轨迹。结果表明:工作间关门,有利于放射性气溶胶微粒及时从排风口排出。研究结果对工作人员在事故条件下规避放射性气溶胶的危害提供了重要的参考。

溪洛渡水电站左岸地下厂房通排风系统竖、斜井施工安全技术措施

介绍了溪洛渡水电站左岸地下厂房通排风系统工程竖、斜井施工的安全技术措施和管理方法,为地下深井施工安全提供参考。现场安全管理是一门复杂的学科,需要人们在长期的实践中探索、总结,使之更具可操作性、客观性和有效性。

放射性厂房通排风自动控制系统的优化

介绍AC800F在某厂房通排风自动控制系统应用中存在问题的基础上,分析通排风自动控制系统的软硬件结构,将存在问题的流量参数及PID调节模块进行扩展完善,并在工艺现场进行了安装和调试验证。

溪洛渡水电站地下厂房通风系统布置设计

介绍了针对溪洛渡水电站厂区规模巨大、地下洞室密集、施工条件复杂、电气设备多、发热量大、通风排烟问题突出等特点进行的地下洞室通排风系统的布置与设计,最大限度地保证了该电站地下洞室内的空气清新、洁净。

Possibilities of Increasing the Effectiveness of Mining Methane Drainage in Conditions of Low Permeability of Coal Seams

There is very low permeability of coal seams in Polish coal mines. For this reason, pre-mining methane drainage is conducted to a small extent, which rarely brings expected results. Methane emission from roof and floor sub-economic seams has the greatest share in total methane emission to workings. Effective CMM （coal mine methane） capture is used from goaf in advance or after mining. However, due to longwall mining and ventilation systems, it is not always possible to capture methane from strata. This paper presents a method of increasing the permeability of coal seams and a method of drilling boreholes towards goaf. Initial results of the effectiveness of methane capture after applying these methods are presented.