摘要
为解决煤矿深部开采过程中采掘面温度过高的问题,基于《煤矿井下热害防治设计规范》(GB 50418—2017),对矿区三个主要采掘工作面进行了系统的热害调查与分析。通过专业仪器对工作面温度、湿度、风速等参数进行连续测量,详细计算了各类热源的散热量及其分布特征。研究表明:机械设备散热占总散热量的75.1%,是最主要的热源;采空区散热和围岩散热分别占11.7%和9.9%。基于焓值法计算得出总制冷负荷为4325.0 kW,考虑20%裕度后的设计制冷量为5200 kW。针对性地提出了包括选用5台SAC-500型螺杆式制冷机组、采用双级变频调速主通风机和局部辅助通风机等综合治理措施。实践表明,该方案可有效解决采掘面热害问题,对煤矿安全高效生产具有重要指导意义。
In order to solve the issue of high temperature in mining and excavation faces during the deep mining process in coal mines,this research conducts a systematic heat damage investigation and analysis on three main mining and excavation working faces in a certain mining area based on the"Design Specification for Prevention and Control of Downhole Heat Damage in Coal Mines"(GB 50418—2017).Continuous measurement of parameters such as working face temperature,humidity,wind speed and others is conducted through professional instruments,and the heat dissipations and their distribution characteristics of various types of heat sources are calculated in detail.The research shows that the heat dissipation of mechanical equipment accounts for 75.1%of the total heat dissipation and is the main heat source;The heat dissipation of goaf and surrounding rock accounts for 11.7%and 9.9%respectively.Based on the enthalpy value method,the total refrigeration load is calculated to be 4325.0 kW,and the designed refrigeration capacity after considering a 20%margin is 5200 kW.Targeted comprehensive governance measures are proposed,including the selection of 5 SAC-500 type screw refrigeration units,the adoption of dual stage variable frequency speed regulation main ventilation fans,and local auxiliary ventilation fans,etc.The practice shows that this scheme can effectively solve the heat damage problem in mining and excavation faces and has important guiding significance for safe and efficient production in coal mines.
作者
樊智
FAN Zhi(Shanxi Yangquan Guzhuang Coal Industry Co.,Ltd.,Yangquan 045011,China)
出处
《山东煤炭科技》
2025年第12期65-70,共6页
Shandong Coal Science and Technology
关键词
采掘面
热害
防治技术
mining and excavation face
heat damage
prevention and control technology
