【摘 要】
:
Coal fires have a very long history in China; the oldest coal fires have being burning for many million years. Up to now more than 56 coal fires spots were distinguished. They mainly locate in West-North of China, North of China and East-North of China. A
【机 构】
:
Department of Energy Engineering, China University of Geosciences, Beijing 100083, China
论文部分内容阅读
Coal fires have a very long history in China; the oldest coal fires have being burning for many million years. Up to now more than 56 coal fires spots were distinguished. They mainly locate in West-North of China, North of China and East-North of China. About millions of tons of coal have been burned in fires every year. Xinjiang Autonomy is the most serious region in coal fires as it has 38 coal fires spots and about 6.85 million tons of coal was burned every year. Coal fires in China ignited by wildfires, spontaneous combustion and human being during mining activities. These fires have released about 0.9 million tons of gasses (including CO, CO2, SO2, NO2 CH4, CO2, H2S etc.) into the atmosphere every year, most of which are brought to the east by wind and resulting more heavier air pollution in northern China.
其他文献
In order to increase the exploration depth of Rayleigh wave, new idea that different from the former principles in data acquisition was applied. Suitable data acquisition parameter was given out on the basis of large amount of experiments. By reducing the
Coalfield fire is prevalent in the world. especially in China, but the main reason of the fire in the coalfield is not clarity. So it\'s difficult to fight the coalfield fire. Based on the model of outcrop spontaneous combustion in coalfield, that when
The commercial FEM software ANSYS was used to analyze the failure characteristics of overburden strata under the conditions of different lengths of mining faces. It was shown that the parameters of mining faces, especially the length was the important fac
The combustion condition in coal-fired furnaces of the large power station boiler is very complex and the flame emissivity is one of the important combustion parameters.A measurement method of the flame emissivity based on the blackbody furnace calibratio
Exploited the forecast system of mining damages, which uses the theory of clean-production in coal-areas as guide. Its aims is developing and using coal resource reasonably and reducing the damage to the environment.
Nano-composite ceramic coating was fabricated on Q235 steel through thermo chemical reaction method. Structure of the coating was analyzed and the properties were tested. The results show that a few of new ceramic phases, such as MgAl2O4, ZnAl2O4,Al2SiO5,
Focusing on the stability of surrounding rock around the roadway driving along next goaf with a narrow coal pillar, a mechanics model of the triangle block structure of main roof above the roadway is established, and the sliding stability coefficient K1 a
The feasibility of the nozzle of self-excited oscillation pulsed jet (SEOPJ) as the breaker and loosing device for the air-lift pump was researched.The dynamic characteristics of the SEOPJ to crush the hard clay and loose the layer of ore deposit were exp
Based on the nowadays\'condition.it is urgent that the gas detection cable communication system must be replaced by the wireless communication systems.The wireless sensors distributed in the environment can achieve the intelligent gas monitoring system.
The new type of risk management is process management.First,the hazard sources are identified before coal mine accidents occur,and then the pre-control measure and information monitoring method based on classifying the hidden hazard sources are given.Last