双轨运输滑道在高边坡锚索工程中的运用

高边坡锚索施工过程中由于地势陡峭,无法布置交通通道,材料运输难度大,而材料的供应直接影响整个施工作业面的施工进度。施工过程中因地制宜,采用斜坡滑道成功解决了材料运输难题,保证了施工进度。文中介绍了滑道设计施工方案。

综采超前轻便型运输单体柱滑道车的设计

基于超前支护影响作业面工作效率和职工健康,设计了综采超前轻便型运输单体柱滑道车。该型滑道车具有结构轻巧、使用方便、操作简单的特点,在燕子山矿得到推广应用。应用效果表明该滑道车具有制造简单、成本低、强度高、易于滑动、滑动稳定的特点,彻底改变了以往人工运输单体柱的方式,同时实现了工作面安全高效生产,创造了较高的经济效益。

滚筒式滑道在长河坝水电站高边坡锚索施工中的运用

在长河坝水电站左岸开关站高边坡锚索施工过程中,由于地势陡峭而无法布置交通通道,导致材料运输难度加大,而材料的供应又直接影响整个施工作业面的施工进度。施工过程中,因地制宜,采用斜坡滑道,成功解决了材料运输的难题,保证了施工进度。介绍了滑道设计施工方案,对类似工程施工具有借鉴意义。

Transport of Cu-H2O nanofluid through a channel with wavy walls under velocity slip and connective boundary conditions

Present study examines the mixed convective peristaltic transport of Cu-H2O nanofluid with velocity slip and convective boundary conditions. Analysis is performed using the two-phase model of the nanofluid. Viscous dissipation and heat generation/absorption effects are also taken into account. Problem is formulated using the long wavelength and low Reynolds number approach. Numerical solutions for the pressure rise per wavelength, pressure gradient, axial velocity, temperature and heat transfer rate at the boundaxy are obtained and studied through graphs. Results show that the area of peristaltic pumping decreases with an increase in the nanoparticles volume fraction. Increase in the velocity slip parameter shows an increase of the pressure gradient in the occluded part of the channel. Further, addition of copper nanoparticles reduces both the axial velocity and temperature of the base fluid. Temperature of the nanofluid also decreases sufficiently for an increase in the value of Blot number.