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A platform for research: civil engineering, architecture and urbanism
Dam calcareous cemented sand gravel deep foundation pit excavation method
The invention provides a dam calcareous cemented sand gravel deep foundation pit excavation method which comprises the following steps: drilling and grouting calcareous cemented sand gravel in batches in a repeated manner, filling gaps in a drilling depth range, combining into a whole, drilling to a designed elevation after repeated operation, filling explosives for loose blasting, and excavating. The method solves the problems that in the excavation process of the calcareous cemented sand gravel deep foundation pit, the excavation and chiseling-away difficulty is large, and blasting pressure relief exists in a drilling blasting mode, the construction efficiency is improved, and the cost is saved.
本发明提供了一种大坝钙质胶结砂砾石深基坑开挖方法，通过多次重复的形式，对钙质胶结砂砾石进行分批次的钻孔、灌浆，将钻孔深度范围内的缝隙填充并结合成整体，通过多次重复后，钻进至设计高程，再填装炸药进行松动爆破，然后开挖。该方法解决了钙质胶结砂砾石深基坑开挖过程中存在的开挖和凿除难度大，钻入爆破的形式存在爆破泄压的问题，提高了施工效率，节省了成本。
Dam calcareous cemented sand gravel deep foundation pit excavation method
The invention provides a dam calcareous cemented sand gravel deep foundation pit excavation method which comprises the following steps: drilling and grouting calcareous cemented sand gravel in batches in a repeated manner, filling gaps in a drilling depth range, combining into a whole, drilling to a designed elevation after repeated operation, filling explosives for loose blasting, and excavating. The method solves the problems that in the excavation process of the calcareous cemented sand gravel deep foundation pit, the excavation and chiseling-away difficulty is large, and blasting pressure relief exists in a drilling blasting mode, the construction efficiency is improved, and the cost is saved.
本发明提供了一种大坝钙质胶结砂砾石深基坑开挖方法，通过多次重复的形式，对钙质胶结砂砾石进行分批次的钻孔、灌浆，将钻孔深度范围内的缝隙填充并结合成整体，通过多次重复后，钻进至设计高程，再填装炸药进行松动爆破，然后开挖。该方法解决了钙质胶结砂砾石深基坑开挖过程中存在的开挖和凿除难度大，钻入爆破的形式存在爆破泄压的问题，提高了施工效率，节省了成本。
Dam calcareous cemented sand gravel deep foundation pit excavation method
一种大坝钙质胶结砂砾石深基坑开挖方法
FAN LICONG (author) / GONG FURONG (author) / WU HAO (author) / LI SANMIN (author) / WANG BAOBING (author) / ZHAO CUIYUN (author) / ZHANG LIJUAN (author) / WAN QIAOYE (author)
2023-05-30
Patent
Electronic Resource
Chinese
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