摘要
为了明确煤体裂隙演化过程中温-压耦合作用机理及裂隙产生本质,分析了温度、压力、温-压耦合作用对煤体破裂的影响,将损伤理论和破裂准则相结合,建立煤体裂隙演化的温-压耦合模型,从理论和数学关系上进行了说明,指出了煤体在温-压耦合下先损伤后遵循破裂准则表现的本质。
To definitely investigate the nature of fracture generation and the mechanism of temperature-pressure coupling in the cracks evolution process of coal mass,we analyze the effect of temperature,pressure,temperature-pressure coupling on coal fracture in this paper; combining damage theory and fracture criterion,we build temperature-pressure coupling model,and illustrate the coupling mechanism from theory and mathematical relationship.The nature of coal under temperature-pressure coupling failure can be described using the principle of first damage and then following the failure criterion.
出处
《煤矿安全》
CAS
北大核心
2017年第3期32-35,共4页
Safety in Coal Mines
基金
国家自然科学基金资助项目(51204136)
中国博士后科学基金资助项目(2016M590963)
陕西省工业科技攻关资助项目(2016GY-192)
关键词
煤体裂隙
损伤
裂隙演化
温-压耦合模型
煤田火区
cracks of coal mass
damage
crack evolution
temperature-pressure coupling model
coalfield fire
