煤矿井下生产,矿工要凭借矿灯照明作业。矿灯是一种人造光源,它发射的光线不但强度与自然光不同,而且缺乏自然光线所含七彩光中的绿、青、蓝、紫光谱。长期在这种人造光源照明下工作,缺乏紫外线的照射,会使人体自然合成的维生素D不足,而使钙、磷等在体内代谢不正常,导致骨骼缺钙,影响身体健康。 Coal mine production, miners rely on mining lamp lighting operations. Miner’slamp is a kind of artificial light source, which not only emits light with different intensity and natural light, but also lacks the green, blue, blue and violet spectrum of the colorful light contained in the natural light. Long-term work under the illumination of artificial lighting, the lack of ultraviolet radiation, will make the human body natural synthesis of vitamin D deficiency, leaving calcium, phosphorus and other metabolism in the body is not normal, leading to calcium deficiency bones, affecting their health.