摘要
岩溶地区船闸基坑开挖面积大、地质条件复杂、质量要求高,为使边坡保留壁面质量满足设计及现行施工技术规范要求,需采用光面爆破技术进行开挖,在查阅当地地质勘察资料的基础上,结合现场爆区实际地质情况,分析岩溶对光面爆破施工的影响以及技术难点,在采用工程类比法对岩溶地区船闸基坑两种岩性边坡进行光面爆破试验研究,并在施工过程中不断总结经验的基础上,通过调整光面爆破试验参数及规范操作步骤,成功地解决了岩溶地区船闸基坑开挖技术问题。
In karst region, the foundation pit excavation area of the ship-lock is large, with complicated geological condi- tions and high quality requirements, in order to make quality of the slope retaining wall meet the requirements of design and the current construction technical specification, smooth blasting excavation technology should be used. Based on consulting the local geological prospecting data, this paper analyzed the influence of karst on smooth blasting construction and its tech- nical difficulties combined with the geological situation of field blasting area. On the basis of researching the smooth blasting experiments with engineering analogy method for two different types of rock slope and constantly summing up experience in the construction of foundation pit excavation of the ship-lock in the karst region, by adjusting the smooth blasting test pa- rameters and standardizing the operation steps, the technological problems of foundation pit excavation had been solved suc- cessfully.
出处
《铁道建筑技术》
2016年第10期116-119,共4页
Railway Construction Technology
基金
中国铁建港航局集团有限公司科技研究开发计划课题(2015-11)
关键词
光面爆破
试验研究
岩溶地区
smooth blasting
experimental research
karst region
