The lower construction is a rectangular plate beam gantry with good rigidity and tensional strength. 下部结构为空间矩型板梁式门架，有较好的刚度和抗扭性能。
The advance support of intake and return aircourse needs a lot of plate girders in the comprehensive mechanized coal mining face. 综采工作面的进回风巷超前支护要用很多板梁。
