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三、关于钻爆质量的检验评判标准 从大瑶山隧道进口的实践来看,深孔钻爆开挖的质量检验应分单个炮孔,单个开挖断面,及区段(如对每月的开挖区段)三个内容。即爆破施工后由技术室测量组在现场上测得的个别炮孔孔底方位偏差尺寸应有个评判的限值;每个开挖循环的平均线性超挖尺寸应有
Third, the drilling blasting quality inspection criteria Judging from the Dayaoshan tunnel entrance practice, the quality inspection of deep-hole drilling blasting should be divided into a single hole, a single excavation section, and the section (such as for each month Excavation section) three content. That blasting construction by the technical room measurement group measured in the field at the individual hole bottom hole position deviation size should have a judge the limits; each excavation cycle average linear over-excavation size should be