摘要
通过电磁控制落锤冲击系统对大同塔山矿煤样进行定量循环冲击,冲击破坏后得到煤粉制样,并对其进行红外光谱特征分析。结果表明:煤体中含有大量氢键,氢键在冲击破坏过程中会发生断裂,塔山矿煤样主要表现为光谱波长3 400 cm^(-1)处的羟基自缔合氢键断裂;随着冲击强度的增大,氢键吸收强度降低;随着煤破坏加剧,氢键断裂需要的能量变大,氢键吸收强度下降趋势大大减缓,表现为非线性特征。
We carry out quantitative and circular impact of coal samples from Datong Tashan Coal Mine through controlling the failing hammer impact system by electromagnetic, and the pulverized coal obtained after the impact failure is subjected to sample preparation and the analysis of infrared spectrum characteristics. The results show that the coal contains a large number of hydro- gen bonds, and hydrogen bonds are broken during the impact process. The main property of Tashan coal is the hydroxyl self-asso- ciation bond fracture. With the increase of impact strength, the hydrogen bond absorption intensity decreases. As the intensifying of coal destruction, the energy required for hydrogen bond fracture becomes larger and the decreased trend of hydrogen bond ab- sorption intensity is greatly reduced, mainly presenting the non-linear characteristic.
出处
《煤矿安全》
北大核心
2017年第9期32-34,38,共4页
Safety in Coal Mines
基金
国家自然科学基金青年科学基金资助项目(51404277)
国家自然科学基金资助项目(51274206)
关键词
电磁控制
冲击破坏
煤红外光谱特征
氢键
煤岩动力灾害
electromagnetic control
impact damage
coal infrared spectrum characteristics
hydrogen bond
coal and rock dynamic disaster
