矿业工程专业毕业设计外文翻译--hems深井降温系统研发及热害控制对策(编辑修改稿)

矿业工程专业毕业设计外文翻译--hems深井降温系统研发及热害控制对策(编辑修改稿)内容摘要：

nd 100%. Heat hazard are therefore a very serious possibility. Workers often suffer heatstrokes and feel faint when working in high temperature mines. There are frequent casualties in deep mines. This hot environment not only harms the health of workers, but also leads to neurological disorders, which cause people to go into a trance, feel fatigue, a general weakness or bee dazed. These states of mind are the main reasons inducing accidents. 4 Suggestions for the three kinds of mines For normal temperature mines, we suggest that some effective measures, such as a perfect management system or improvement in management should be implemented For middlehigh temperature mines, we should enhance nonmechanical technology, such as increasing ventilation and improving the ventilation layout. With such improvements, we can meet the cooling needs. For high temperature mines, we must take mechanical cooling measures. The suggested measures to be taken in all three groups of mines are shown in Table 1. 5 Operating principle of HEMS Based on the research cited above and given the existing problems in cooling technology at present as well as the deep mine heat hazard situation in the Jiahe coal mine of the Xuzhou Mining Company, it had been suggested that the China University of Mining amp。 Technology (Beijing) in cooperation with the Xuzhou Mining Company investigate present heat hazard control technology. The study was supported by a number of national departments (see Acknowledgements). Based on this investigation, we are proposing, for the first time, new cooling technology which uses mine water inrush as a source of cold energy. The system, called the high temperature exchange machinery system (HEMS) and the equipment were produced and successfully applied in the Jiahe coal mine of the Xuzhou Mining Company in 2020, which has a good effect on controlling heat hazard in coal mines. The operating principle of HEMS is based on extracting cold energy from mine water inrush at every level, and then the cold energy is exchanged for heat energy in high temperature air at a working face, which causes the air temperature and humidity at the working face to be reduced. At the same time, heat energy obtained from HEMS can be used as a heat source for building heating and showers[5–9]. There are two circulations in HEMS, one is refrigeration and heat discharge system in the mine, the other is the heating building and a refrigeration system on the ground. These two systems form the entire circulation and production system[10], which are shown in Fig. 3. Water is the energy carrier of the entire system. It is green and environmentally friendly。 it saves energy and reduces pollution and conforms with sustainable development of energy use in China. 6 Cooling models and technology Three control models of deep mine heat hazard are proposed and the HEMS technology is formed according to the characteristics of the strata temperature field in the Xuzhou mining area and on differences of mine water inrush[11–15]. Jiahe model: moderate cold energy The mining depth of the Jiahe coal mine is down to 1000 m and the heat hazard is very serious, with a working face temperature of about 36 176。 C. The mine water inrush is from 95 to 135 m3/h. The building heating and bath water are supplied by boilers, which wastes plenty of resources and seriously pollutes the environment. According to the specific conditions in the Jiahe coal mine, the HEMS is adopted to reduce the temperature in the mine. The source of cold energy is moderate and meets the need of the objective for refrigeration. Cold energy in water is utilized and heat is generated during the process of cooling, which can be used for heating buildings and bath water instead of using the boiler. There are two phases of engineering construction, given the specific conditions in the Jiahe coal mine. Phase one uses mine water inrush as cold energy。 its operating principle is shown in Fig. 4a. Phase two uses highlow water level circulation for cold energy. Its operating principle is shown in Fig. 4b. This system has been successfully applied at two working faces and four tunneling faces in the cooling project in this mine. The design and construction of the heat utilization project on the ground has been pleted. Fig. 4 Diagram of cooling function of Jiahe model with mine water inrush and circulation of water levels as sources of cold energy Sanhejian model: cold energy shortage and geothermal anomaly The mining depth of the Sanhejian coal mine is now 1000 m and heat hazard are very serious. The temperature at the working face is about 38176。 C . Mine water inrush is 60m3/h and its temperature ranges from 25 to 30176。 C. Complementary dynamic water of the Ordovician system amounts to 1020 m3/h, where the water temperature is 50 176。 C because of a geothermal anomaly. Heat for the buildings and bath water is supplied by a boiler, which wastes plenty of resources and seriously pollutes the environment. According to the specific conditions in the Sanhejian coal mine, the HEMS is adopted to reduce the temperature in the mine. There is insufficient mine water inrush and sources of cold energy are in short supply. Therefore, we should make use of a geothermal anomaly in the Sanhejian coal mine. First, heat energy is extracted from the hot mine water inrush for building heating on the ground in the winter. The HEMS replaces the boiler and cold energy is obtained during the process. Cold energy is stored underground and will be used for cooling at the working faces in the summer. There are two phases of engineering construction, given the present conditions in the Sanhejian coal mine. Phase one uses horizon circulation of water as cold energy, whose function diagram is shown in。 phase two is the geothermal utilization proj。