电缆沟工程施工方案.doc

（一）电缆沟工程
1、电缆沟的开挖。打钢板桩。开挖深度为3～４m，故采用槽钢密扣支护，以利挡土与防水，槽钢入土深度应大于2.5m。开挖后的基底及时排水，不得受水浸泡，不得超挖，若超挖用碎石填至基底标高。
2、电缆沟的基础处理。地下导管一般要承受其覆盖土的荷重和外界附加的荷重，因此对沟的基础处理应予以高度的重视：本工程采用Φ10的横向间距为1米，纵向间距为6米的松木桩。松木桩总长6.5米，在其0.5米及其以上部分敷设30cm的10-100KG块石基床，再在此上敷设200mm厚碎石和100mm厚c15素砼。
3、素砼垫层施工。a.沟槽、碎石经验收合格，即测放垫层中线、边线及标高。抽干积水后浇筑砼垫层。捣制砼全过程中以及垫层砼终凝前不得中断排水。b.采用商品砼，严格控制砼坍落度，不合格的砼不准使用。c.砼用平板振捣器振至密实，
(A) of the cable channel works
1, cable trench excavation. Beat sheet pile. Excavation depth is 3 ~ 4m, so close button using channel support to facilitate the retaining and waterproof, channel embedded depth should be greater than 2.5m. After the excavation of the basement drainage time shall not be immersed in water shall not exceed dig, if overbreak filled with gravel to the basement level.
2, cable channel based processing. Underground conduit generally have to bear the load of its coverage territory and outside the additional load, so ditch the basis of treatment should be a high priority: This project uses Φ10 horizontal distance of 1 meter vertical distance of 6 meters of pine pile. Pine pile length of 6.5 meters, 0.5 meters in its part of the laying of 30cm and above the 10-100KG rubble foundation and then laying this on 200mm thick and 100mm thick gravel c15 Plain Concrete.
3, Plain Concrete cushion construction. a. trench, gravel and passes, that measure up cushion center line, sidelines, and elevation. After the pouring of concrete drain the water cushion. Trace the entire process of manufacturing concrete and cushion before the final setting of concrete drainage shall not be interrupted. b. using Shangpin Tong, strict control of concrete slump, concrete are not allowed to use unqualified. c. concrete vibrators with a vibrating plate to compact,