Heat and Humidity Problems in Indian Coal Mines Mass Production Panels and Their Remedies

摘要

Abstract Workplace comfort studies have been undertaken in a variety of sectors worldwide. In some countries, studies on the underground coal mine thermal environment have also been carried out. However, no analogous studies have been conducted on the thermal comfort of miners working in Indian mass production panels (MPPs). This study was conducted on 14 MPPs in Indian geo-mining scenario, which included 12 Continuous Miner (CM) panels and two Powered Support Longwall panels. The actual thermal environment of each MPP is evaluated. The probable causes of the thermal environment and their practical cures have been elucidated. The thermal environment data of MPPs are analyzed, and regression analysis is performed to establish relationships that can be used to regulate the thermal environment of MPPs. This research also outlined the heat and water sources in MPPs and their control measures. The study suggested that a temperature difference between DBT and WBT in the MPP working areas must be maintained at least 2?°C to achieve a relative humidity of around 80 and a thermally comfortable, safe, and healthy working environment for the miners. It is also proposed to introduce a dry drilling system in the Bolter and include a covered water drainage system in the design and layout of mass production CM panels. The implementation of the recommendations in MPPs of India not only improved the thermal environment, but also the productivity, health and safety of the miners.