本图解法巷道支护设计计祘,系作者设计过的一项工程实例。计算工作简化了。在条件相似的地方,使用类似的支护形式,可作参考。一、工程目的和工程地质条件本巷道工程,在地表倾斜15°～30°,上陡下缓的山坡地下,掘凿断面3m~2,距地表10m(坑口处)～46m,全长250m,为疏干地下水 The diagram solution roadway support design 祘, the author designed a project example. The calculation is simplified. In similar conditions, the use of similar support form, can be used as a reference. I. Engineering Objectives and Engineering Geological Conditions The roadway project, digging and cutting a section of 3m ~ 2 at a slope of 15 ° ~30 ° on the earth’s surface with a steep slope, is 46m in length from the surface of 10m (pit mouth) to a total length of 250m, To divert groundwater