土石方開挖施工技術交底記錄.doc

交底內容：
1、開挖前應對開挖區域的原地形進行復測、拍照、報監理審批，作為工程量計量的依據。
2、開挖前先作好排水設施，保證土石方工程排水順暢。
3、挖土應由邊到中，分層循序進行。當開挖至接近路基設計頂面時，應根據土質情況注意預留碾壓沉落高度，其數值可通過試驗確定。
4、路基的尺寸和高程必須符合圖紙要求，不得超挖，同時應根據施工需要增加工作面寬度。
5、地基的任何部分受到擾動或損壞時，按照監理工程師的要求予以超挖。
6、開挖完后路基要進行平整、碾壓。路基壓實采用重型擊實標準，路塹以下深度0~30cm內路基壓實度要求達到95%。如達不到壓實標準時，要進行換土處理。
7、整個施工期間，始終對所有挖方和路堤的工程邊坡、路拱和排水溝進行修筑，并予以養護來保證滿足排水的要求。
8、路基在開挖過程中，若遇軟弱地層或障礙物，需采取特殊措施時，應與監理工程師和設計部門商討處理。
Cards on the table contents:
1 excavation area before the excavation should retest the original terrain, taking photographs, newspaper supervisory approval, as the basis for measuring quantities.
2, make drainage facilities before excavation, earth works to ensure smooth drainage.
3, by the side of the excavation, the layered sequentially. When the excavation to the top surface close to the design of embankment should be compacted under the sink soil conditions allow a high degree of attention, its value can be determined through experiments.
4, the roadbed must meet the size and elevation drawings shall not exceed dug, and construction should be increased face width.
5, the foundation of any part of the disturbed or damaged, according to the requirements of supervision engineers to be super-dig.
6, finished roadbed excavation to finish, rolling. Compaction by heavy compaction standards, the following cutting depth of 0 ~ 30cm subgrade compaction requirements within 95%. If not meet compaction standards, the need for changing soil.
7, during the construction period, and always for all excavation and embankment slope, road humps and drains were built, and be guaranteed to meet the water conservation requirements.
8, roadbed in the excavation process, In case of soft ground or obstacles, need to take special measures, should be supervision of engineers and design departments to discuss treatment.
 

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