一、水砂充填支架的现状水砂充填采煤工艺在国外应用较少,在需要充填管理顶板的地方,一般采用风力充填。西德风力充填支架现已开始批量生产(如图1),除我国较多地采用水砂充填工艺之外,波兰也采用水砂充填工艺,波兰在水砂充填工作面上开始试验的充填支架是将节式支架尾梁加长,用以支护待充填空间的 First, the status quo of water sand filling bracket Water sand filling coal mining technology in less application abroad, where the need to fill the roof management, the general use of wind filling. West Germany wind-powered stent has now begun mass production (Figure 1), in addition to our more use of water sand filling process, Poland also uses water sand filling process, Poland began filling sand in the test filling bracket Is the section bracket tail beam lengthened to support the space to be filled