appendicular skeleton

WT5BZ]The reasons why the operation of central air_condition and water pump(typical affiliated system of construction) would bring construction's vibration and high environmental noise are set out and its,mechanism is revealed on the basis of signal analysis technique.

本文分析了建筑物典型附属系统中央空调和供水泵引起结构振动与高水平环境噪声产生的原因 ,用信号分析技术揭示了振噪机理 ,通过诊断 -技改与施工 -对比测试与分析 ,成功实现了减振降噪 ,说明所采用的研究途径和应用技术的有效性。

On the basis of integral simulation experiments,the study of acce-ssory device of main mine fan and the analysis of the existing problems of the compno-ents with high resistance force, the author makes clear the pressure loss of eachcomponent of the accessory devices and advances the key points and measures for reducing the resistance force of main accessory devices.

通过对矿井主要通风机附属装置的整体模拟实验研究及高阻力部件存在问题的分析，弄清了附属装置各部件的压力损失情况，提出了主要附属装置减阻改造工作的重点和措施。