The advance support of intake and return aircourse needs a lot of plate girders in the comprehensive mechanized coal mining face. 綜采工作面的進(jìn)回風(fēng)巷超前支護要用很多板梁。
An air curtain was designed according to the jet theory of fluid mechanics and the role and feature of air curtain to separate dust in a fully mechanized face. 根據流體力學(xué)射流理論，分析了空氣幕在綜采工作面隔離粉塵的作用，并根據綜采工作面應用空氣幕隔塵的特點(diǎn)，設計了空氣幕。
