Kumar Vivekanand, Palei Sanjay K, Karmakar Netai C, Chaudhary Dhanjee K
Department of Mining Engineering, Indian Institute of Technology (BHU), Varanasi, 221005, India.
Saf Health Work. 2022 Mar;13(1):73-77. doi: 10.1016/j.shaw.2021.10.007. Epub 2021 Oct 25.
Whole-body vibration (WBV) exposure of coal mine dumper operators poses numerous health hazards. The case-control study was aimed at assessing the relative musculoskeletal health risk of dumper operators' exposure to WBV with reference to the nonexposed group.
Measurements of WBV exposure were taken at the operator-seat interface using a human vibration analyzer for 110 dumper operators in three coal mines. This vibration measurement was supplemented by a questionnaire survey of 110 dumper operators exposed to WBV and an equal number of workers not exposed to WBV. The relative risk of musculoskeletal disorders (MSDs) has been assessed through the case-control study design.
ISO guidelines were used to compare the health risk. It was observed that the prevalence of pain in the lower back was 2.52 times more in the case group compared to the control group. The case group of Mine-2 was 2.0 times more prone to vibration hazards as compared to Mine-3.
The case group is more vulnerable to MSDs than the control group. The on-site measurement as well as the response of the dumper operators during the questionnaire survey corroborates this finding.
煤矿翻车机操作员全身振动（WBV）暴露会带来诸多健康危害。该病例对照研究旨在评估翻车机操作员暴露于WBV相对于未暴露组的相对肌肉骨骼健康风险。
使用人体振动分析仪在操作员座椅界面测量了三个煤矿中110名翻车机操作员的WBV暴露情况。通过对110名暴露于WBV的翻车机操作员和同等数量未暴露于WBV的工人进行问卷调查，对此次振动测量进行补充。通过病例对照研究设计评估了肌肉骨骼疾病（MSD）的相对风险。
采用国际标准化组织（ISO）指南比较健康风险。观察到病例组下背部疼痛的患病率是对照组的2.52倍。与3号矿井相比，2号矿井的病例组更容易受到振动危害，前者受振动危害的可能性是后者的2.0倍。
病例组比对照组更容易患MSD。现场测量以及翻车机操作员在问卷调查中的回答证实了这一发现。
