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blasthole
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爆破孔
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详细解释：
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以下为句子列表：
英文: Based on the engineering practice of the side slope excavation of Dayanchi section within the road for the construction traffic of Guandi Hydropower Station, the problems such as the selection of blasthole distance for presplit blasting, and the rock ridg
中文: 摘要通过官地水电站对外交通公路大盐池合同段边坡开挖中预裂爆破的工程实践，对预裂爆破的孔距选择及下部严重出现岩坎、预裂面平整度、预裂爆破后辅助孔成孔率低、预裂与爆破区爆破网络以及预裂孔角度变化等问题进行分析，提出了具体的解决方法。
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