提升速度引起的安全问题

本文基于对提升过程的力学分析结果，指出匀速段提升速度对摩擦提升动防滑，钢丝绳动应力以及容器横向摆动等安全问题的直接影响，有关公式从理论上说明了安全提升速度选取与系统其他参量的关系。图２，参４。     

地表和岩层变形与工作面推进速度的关系

以现场实测和相似材料模拟实验资料为基础，采用连续介质力学的方法，对开采层上覆财层和地表的移动变形与开采工作面推进速度的关系进行研究了。得出其间的动态关系方程。     

自调节水位控制器的应用

介绍了火力发电机组中低压加热器汽液两相流水位控制器的原理、功用.     

峰峰集团公司孙庄矿-228水仓锚注综合加固工程施工方案设计

介绍了孙庄矿-228水仓锚注综合加固工程施工的设计方案。     

模拟火灾注氮灭火试验

介绍了利用BXND-500型地面移动式变压吸附碳分子筛制氮装置作为氮源,在救护队演习巷道内进行的实际规模巷道火灾的自熄和注氮灭火对比试验.考察了巷道火灾半封闭状况下的注氮灭火效果.     

高压旋喷注浆合理提升和旋转速度的理论分析

从高压射流与土体相互作用规律入手，从理论上分析射流束在静止和移动状态下，破土深度与作用时间、扩散宽度、移动速度等之间的相互关系。并结合室内模拟试验结果，推算在砂层中单管旋喷注浆的最佳提升速度和旋转速度配合值。     

Computer simulation of combustion of mine fires

According to control theories, mine fires can be considered as an unsteady process after the normal ventilation system is disturbed. Applied the principal of physical chemistry and thermal fluid mechanics, the parameters models of the unsteady state system have been given, such as fuel combustion rate, heat of combustion, concentration, temperature, heat losses, heat resistance, work of expansion and heat pressure difference. The results of the calculation agree approximately with the results of the test. By the computer simulation, it is shown that the main factor of producing the throttling effect is the fire rate, second is the heat resistance and the heat pressure difference. The rate of heat flow that passes through the airway wall is the maximum on the surface, and decrease with time. The heat transfer progresses only within the range of 0..5 m away from theairway wall during combus-tion for 2 hours. It‘s variable for the mass flux rate and the percentage concentration of the gas along the airway of the downstream. When the delayed time is very small, the varidtion can be neglected. Viscosity resistance is the main part of the heat resistance, second is the expansion resistance that is less than tens Pascal when Mach number is very small. Work of expansion is principally tumed into heat losses, only a very small part is consumed by the work of the heat resistance and the inertia acceleration.     

地基沉降运动

地基沉降是一种缓慢变速运动，不同土层具有不同的运动特点，分析了解地基土沉降运动过程，判断其沉降运动差异对建筑产生的破坏力大小，确定建筑的安全性及可能产生破坏的时间。仅仅考虑最终稳定的沉降差，有时是不安全的。