Study on early warning platform of turned over combustion based onoxidation and temperature rising law of coal pile

In order to have the accurate turned over combustion basis of the long period coal pile storage, to reduce the big error fluctuation existed in the heat measuring process of the storage coal and thus cause the inoperability of the heat value consumption as the turned over combustion basis, based on the temperature as the important predicted characteristic index in the coal oxidation process, the paper provided a judging criterion to handle the monitored internal temperature of the coal pile. With the test and measurement of the coal pile oxidation and temperature rising process under the different piling method, the paper had a discussion on the temperature rising law of the internal different area in the coal pile oxidation process and thus the temperature rising law could provide the scientific basis to the early warning of the coal pile turned over combustion, the analysis on the heat value consumption and the prevention technology of the spontaneous combustion. The test results showed that during the temperature rising process of the coal pile, there was obvious sectional features and there a good correlation between the temperature rising and the heat value reduction. Finally,the early warning platform of the coal pile turned over combustion was established according to the test results.