综放移架双动喷雾装置与降尘效果

Water spray device for dust suppression in sub-level caving longwall faces and its performance

“三软”煤层综放工作面在移架时，大量破碎顶煤易从支架两侧侧护板间掉落，造成煤尘飞扬，且分布整个支架断面。

Abstract Sub-level caving longwall faces which mine very soft coal seams are usually very dusty because a lot of fine coal drop down from gaps between powered supports.This paper presents an introduction to the working principal and actual performance of a new water spray device that is operated either manually or automatically.