文档介绍：Subject Subject Subject Subject : : : : Study Study Study Study on on on on the the the the numerical numerical numerical numerical simulation simulation simulation simulation of of of of loose loose loose loose coal coal coal coal spontaneous spontaneous spontaneous bustion in in in in roadway roadway roadway roadway Specialty Specialty Specialty Specialty : : : : Safety Safety Safety Safety technology technology technology technology and and and and engineering engineering engineering engineering Name Name Name Name : : : : Shi Shi Shi Shi Jilin Jilin Jilin Jilin (Signature) (Signature) (Signature) (Signature) Instructor: Instructor: Instructor: Instructor: Wen Wen Wen Wen Hu Hu Hu Hu (Signature) (Signature) (Signature) (Signature) ABSTRACT ABSTRACT ABSTRACT ABSTRACT Being the underground channel of ventilation, pedestrian, material transporting, coal seam roadway is also one of the places where occur coal bustion underground. Currently, domestic and foreign scholars did a lot of research on the numerical simulation of bustion process of coal roadway, but there still exists a gap between the research and site reality, mathematic model for describing coal bustion process in various environment and conditions have not been perfect, and more of the simulations on coal bustion process of existing model were 2D, key parameters were selected using theory calculation or experience formula, the difference between simulation calculation results and reality was significant. In this article, one of working faces in 2# coal seam in Zaoquan coal mine of Ningxia Hui autonomous region was taken as example; methids of experiment, field observation and numerical simulation bined to study the loose coal bustion in roadway. Firstly, through the large-scale experiment of coal bustion and programmed temperature experiment, coal bustion character parameters such as oxygen consumption velocity, heat liberation intensity and particle size influence function of coal sample were tested, ex