路基坡面防护采用比较多的一种是拱形骨架防护，其施工过程主要分为以下8个步骤。
The arch skeleton protection is widely used in subgrade slope protection, and its construction process is mainly divided into the following eight steps.
1、平整边坡
1. Slope leveling
采用人工对交验后的坡面进行修正、整平，清楚坡面危石、松土、填补坑凹等，要求坡面平整、 密实，线形平顺。
Manual correction and leveling are adopted for the slope after inspection. Dangerous rocks, loose soil and filling pits are clear. The slope is required to be flat, dense and smooth.
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2、测量放样
2. Survey and setting out
测量放线前， 工程部测量人员要根据涵洞位置并考虑混凝土踏步位置整体布拱， 在所有拱圈位置确定后才能根据里程位置精确放线。
Before surveying and setting out, the surveyors of the engineering department should arrange the arch as a whole according to the culvert position and considering the concrete step position, and then accurately set out according to the mileage position after all the arch ring positions are determined.
根据测放的里程桩现场排出骨架位置，撒白灰线标示， 排出骨架位置后， 要对相邻的里程桩再次进行闭合测量。确认无误后方可进行基槽开挖。
According to the measured mileage piles, the skeleton position shall be discharged on site and marked with white gray line. After the skeleton position is discharged, the adjacent mileage piles shall be closed for measurement again. The foundation trench can be excavated after confirmation.
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3、骨架基槽开挖
3. Excavation of skeleton foundation trench
根据施工控制桩拉线， 定出拱架的轮廓， 拱形骨架用石灰划出，准备开挖拱架沟槽。采用人工或小型挖机开挖沟槽，根据设计控制线进行开挖，线形平顺，槽底平整、密实无松散，尺寸、高程、坡度等检测指标要满足设计及规范要求。
According to the construction control pile line, the outline of the arch frame is determined, and the arch skeleton is marked with lime, ready to excavate the arch groove. The trench shall be excavated by manual or small excavator according to the design control line, with smooth line, flat and dense trench bottom, and the detection indexes such as size, elevation and slope shall meet the design and specification requirements.
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4、砂垫层铺设
4. Sand cushion laying
在基槽开挖完成后，消除基地松散结构，并进行洒水，在基地平整、密实后即可进行砂垫层的铺设。砂垫层铺设使用土工布铺底， 并且防止其他杂物污染砂浆， 不得直接倒在土基上使用，厚度为10cm，铺设平整、密实。
After the excavation of the foundation trench, the loose structure of the base shall be eliminated, and the water shall be sprayed. After the base is leveled and compacted, the sand cushion can be laid. The sand cushion is laid with geotextile to prevent other impurities from polluting the mortar. It shall not be poured directly on the soil foundation. The thickness is 10cm, and the laying is smooth and dense.
5、拱圈预制块铺设
5. Arch ring precast block laying
预制块自下而上进行铺设，在砂浆垫层上安装预制块。施工时必须挂线砌筑，保证线性平顺、砌体平整，与坡面紧密结合。
The precast blocks are laid from bottom to top, and the precast blocks are installed on the mortar cushion. During the construction, the line must be hung for masonry to ensure that the line is smooth, the masonry is flat and closely combined with the slope.
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