Noise reduction during mining excavations for potash extraction
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The problem of noise generated during mining works consists of noise emitted from inside the canal and outside the canal. Interior noise is generated by mining machinery and equipment for coal mining and transportation. Outside noise is generated by the main fans, which must assure a constant, high dedusting efficiency. During this commission, we dealt with lute fans, which were responsible for the emission of noise outside.
The client asked us to propose a noise reduction strategy for the external fans running continuously during potash extraction in the 37 km tunnel. The shaft tower was located 100m below the ground, from which two 1500m deep shafts for the extraction of the polyhalite base were extended. Our task was to silence the lute fans designed to remove dust from the air flowing through them, located at the mine shafts. Due to the large dimensions of the devices, it was necessary to propose a non-standard solution while maintaining the highest acoustic efficiency.