Large patios should have integral drains or proper slope design that will carry water to a low point drain.
大院子应该有不可分割的排水渠或斜坡进行适当的设计，将进行水低谷流失。
2
On this basis the measures of horizontal drain Wells for dewatering the body of slope and preventing landslides are proposed.
提出了采用水平排水技术疏干坡体，防治滑坡的技术措施。
3
At the foot of the drainage on embankment slope, there must be a drain, the depth and thickness of which must guarantee enough draining section when the surface is frozen.