采用平模生产清水砖板的方法已有多种,但均是在底模上铺一层弹性材料或是用可充气的橡皮条,然后把砖塞进去。因此排砖这一工序仍然不能采用机械化的方法,有时工人还需要爬到底模上用手工排砖。由于砖的规格不整齐,因此很难用橡皮条把砖的四周封闭的很严, There are many methods for producing clear water slabs using flat molds, but they are all covered with a layer of elastic material on the bottom mold or an inflatable rubber strip, and then the bricks are stuffed in. Therefore, the process of arranging bricks can still not adopt a mechanized method. Sometimes workers also need to climb bricks and bricks by hand. Because the specifications of the bricks are not neat, it is difficult to use a rubber strip to close the perimeter of the brick.