浅析矿井避难硐室安全供氧方式的选择

供氧系统是避难硐室的重要组成部分,主要为避险人员提供生命保障。对目前避难硐室采用的3种安全供氧方式,即压风供氧、压缩氧气瓶供氧、化学制氧(包含再生药板生氧装置和氧烛供氧)进行了分析比较,为避难硐室安全供氧方式的选择提供理论依据。     

New application notion of pipeline transport—— integrated in industry solid waste innocuous and efficient disposition

In order to solve transport problems of industry solid, firstly, a new application notion of pipeline transport was presented, that is to say, combining pretreatment and transport with disposal techniques of industry solid waste. Secondly, the integrated disposal and transport system for industry solid waste was introduced, in particular, the operating principles, equipment set-up, key technology and technical parameters. Next, this paper illustrated the application of this integrated system. Such as it can transport coal sludge with sufficiently high solids content （ about 72%-77%） and high apparent viscosity （about 1 000-3 000 Pa.s） directly by pipeline having no use for water and addition agent. Generally, the transport distance is about 1 000 m. This system has been successfully used in innocuous disposition and efficient utilization of other industrial byproducts or solid wastes, such as city sludge and paper making waste. The integrated system causes no pollution to the environment for its complete seal and realizes protecting the environment, conserving the energy, promoting the development of cycling economic. Finally, the paper discussed the research works that were needed for studying such pipeline transport system and narrates the relevant condition and application status.     

矿井独头巷道掘进超前探测技术现状

介绍了几种适合独头巷道的超前探测技术,详述了其勘探原理、工作方法、国内仪器现状及特点等,对煤矿井下掘进超前探测技术的合理选择具有一定借鉴意义。     

预压螺旋的研究与应用

在泵送高浓度粘稠物料的浓料泵送系统中,由于所泵送的介质浓度高,粘度大,使得各种结构形式的浓料泵都有泵吸难的普遍问题,从而极大的限制了泵送效率.本文介绍了一种适用于高浓度粘稠物料泵送系统中给浓料泵提供带有一定压力和足够供给量的预压螺旋给料装置,详细阐述了其主要结构、工作原理及主要特点.     

非煤矿山安全生产检测检验运行规则和技术规范的研究

通过研究我国非煤矿山安全生产检测检验运行规则和技术规范的现状,提出需要改进的地方,对提升我国安全生产整体水平具有重大意义,这也是国家安全生产技术支撑体系建设的重要内容。     

SLC30煤泥搓和机的改进设计

高浓度煤泥(质量浓度75%)在贮存中易于结块且在运输中常混入矸石、木块等杂质,故管道输送前必须对其破碎成浆,降低输送阻力.鉴于煤泥浓度高、持水性强、内聚力大,传统的破碎设备易发生堵塞,而SLC30煤泥搓和机弥补了传统破碎设备的缺陷,但实际应用中发现其煤泥处理量仅为20 t/h,无法满足工程需求.本文详述了SLC30煤泥搓和机的改进方案,最终使得煤泥的处理量增加至30 t/h,降底了煤泥破碎粒度,大大提高了其工作效率.     

高粘度煤泥加压旋转流变仪的标定与应用

高粘度煤泥流变特性是影响其高压管道输送阻力的一个重要因素．故研制加压旋转流变仪测量高粘度煤泥不同压力时的流变特性。标定加压旋转流变仪,用于测试压力对流变性的影响。使用加压旋转流变仪测试浓度75％煤泥的剪切应力和剪切速率．绘制了煤泥不同压力时的流变曲线和表观粘度曲线,通过分析确定了煤泥常压下是宾汉型流体,加压下为屈服假塑性流体。     

浅析煤矿井下电缆着火事故原因及其防范措施

电缆在煤矿井下广泛使用,由电缆着火和延燃所酿成的煤矿井下重特大火灾事故时有发生,造成严重的人员伤亡和经济损失.对此,文章分析了煤矿井下电缆着火的原因并提出了相应的预防措施,对预防井下火灾有一定的借鉴价值.