Mine disasters

In addition to his work on equifibrium, Le Chatelier was involved in many other areas of chemistry and science in general. For instance, he investigated the cause and prevention of mining disasters. He helped produce... 

Key Laboratory of Mine Disaster Prevention and Control Technology in Hebei Province, China College of Safety Engineering, North China Institute of Science and Technology, Beijing, China... 

Key Laboratory of Mine Disaster Prevention and Control, Hebei, China... 

Method of choosing optimal features used to Intrusion Detection System in coal mine disaster warning internet of things based on Immunity Algorithm... 

Miao Xie xing, et al. 2007. Rock mass seepage and mine disaster prevention and control, Journal of Xi an Petroleum University, 22 74—77 (in Chinese). 

In this paper, a plurality of data of analysis of ground water quality test were pre-processed with Immune Algorithm (lA). The key characteristics of coal mine water inrush source data are extracted by characteristic analysis method. The complexity of the data is reduced by reducing the dimensionality of the data set. With the help of the data after dimension reduction, the Back Propagation Neural Network (BPNN) is trained. The coal mine water inrush source is recognized by the trained BPNN. Experiments show that if the source of mine disaster water is identified by the method developed in the paper, its accuracy can reach 93%. The more detailed introduction on the method is given below. 

THEORY ON IDENTIFICATION OF MINE DISASTER WATER SOURCE... 

Coal Seam Methane (CSM) or coalbed methane (CBM) is the naturally occurring gas in coal seams, which is normally considered as the cause of coal mine disasters like coal and gas outburst and methane explosion (Wang and Xue, 2008). But recently, the nature of CSM as the clean and efficient energy has been progressively understood (Chen et al., 2012). Besides, as a greenhouse gas, CSM has over 20 times the greenhouse effect and 7 times more harming of the Ozone Layer compared to carbon dioxide (Chen et al., 2012). 

The formula y = 0.0047x - 1.0198x + 58.2 is used to describe the relationship between temperature and complete dehydration time of material. Making use of that relation may estimate complete dehydration time of foamed gel between 20°C and 120°C and fill mined-out area in time to avoid mine disasters caused by spontaneous combustion. 

The application research of K shortest path algorithm in avoiding mine disaster... 

Key Laboratory of Hebei Province for Mine Disaster Prevention, Safety Engineering School,... 

ABSTRACT The problems in the current domestic use of the pitot tube combining micro-manometer to verify the mining mechanical anemometers were analyzed. Based on the structure principle of hydrodynamics, under the premise of the test with no violation of the orders anemometer verification, a new method based on wind speed equivalent weight to verify the anemometer was introduced. And the field test in the scene of the Key Laboratory of Hebei Province for Mine Disaster Prevention demonstrates that this method is a simple, fast, and accurate method to verify the mining mechanical anemometers within the expiration date of the wind tunnel. 

The authors have tested the mining mechanical anemometers in the scene of the Key Laboratory of Hebei Province for Mine Disaster Prevention based on the air velocity Equivalent weight method. The anemometers were verified in the medium-speed segment of the wind tunnel with the above-mentioned arrangements and... 

A probe into the working procedures of crisis public relations in mine disasters... 

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