国家重点基础研究发展计划项目973项目2009CB 219801;国际科技合作计划项目2010DFA 72760-609;国家自然科学基金煤炭联合基金项目U1261210。The National Basic Research Program of China 973 Program2009CB219801;International Science and Technology Cooperation Project 2010DFA 72760-609; Joint Funds of the National Natural Science Foundation of ChinaU1261210