workface的音标

Based on the damage mechanics, the model of damage base beam is established and the movement of main roof and abutment influenced by break of main roof ahead of workface are analyzed.

基于损伤力学的思想，建立了损伤基础梁的力学模型，并用该模型的结论分析了老顶岩梁超前破断对支承压力及其运动状态的影响。

This paper introduces the state of the art and the development of thick seam mining techniques in details and the prominent achievements in top-coal caving and large cutting height workface in China.

详细介绍了我国厚煤层开采技术现状与发展历程，以及我国在放顶煤开采和大采高开采方面所取得的突出成绩。

Through study and practice to gas drainage of Xinan coal mine, this paper summarizes gas drainage technology in high gas workface, it is experience for preventing gas in same coal mine.

通过对新安煤矿瓦斯抽放技术的实践与研究，总结了高瓦斯工作面的瓦斯抽放技术，为同类矿井的瓦斯防治提供了可借鉴的经验。