我厂总装车间的传送机采用了以隔声为主、吸声为辅的治理噪声方法,使原来高达87～95分贝(A)的噪声值降至74～82分贝(A),消除了危害。 我们在传送机钢制平台上,用木架、纤维板制成一座2.5× 2.0 × 2.4米的隔声消声室(见图1)。室内四壁、地面、顶棚均铺设30毫米的泡沫塑料吸声层 The conveyor of our factory assembly workshop adopts the noise-control method supplemented by sound absorption, reducing the noise value up to 87-95 dB (A) to 74-82 dB (A), eliminating the hazard . On the steel platform of the conveyor, we made a soundproof anechoic chamber of 2.5 × 2.0 × 2.4 meters with wood frame and fibreboard (see Figure 1). Indoor walls, floors, roof are laid 30 mm foam acoustic layer