建筑物基础保护层开挖一直是困扰水利水电施工的难题之一。
Protection layer excavation in foundation of structure is always one of difficult problems perplexing construction in water conservancy project.
介绍在边坡保护层开挖爆破中采用小直径低爆速炸药的试验情况及取得的良好效果。
The experiment about using slim hole and cool explosives to excavate a slope protection layer in excavation blasting is introduced, and excellent effectiveness is achieved.
文中介绍了汾河二库基坑保护层开挖中对基岩的声波测试，着重对测试结果进行了较详细分析。
This paper introduces the rock acoustic wave test in protective layer of dam foundation in Fenhe Secondary Reservoir and conducts more detailed analysis on the test result.
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