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当铁路下穿立交桥基础部分遇有大量岩石时,必然涉及到基坑、顶进爆破施工。由于爆破点处在铁路下方或临近营业线,爆破施工势必给铁路行车安全带来极大的安全隐患,因此爆破方案的选择和爆破安全控制就显得尤为重要。主要以205国道新沂改线段下穿陇海铁路立交桥工程顶进基坑岩石爆破为例,探讨顶进施工岩石开挖的爆破控制。
When crossing the overpass under the railway in the base part of a large number of rocks encountered, inevitably involve the foundation pit, jacking blasting construction. Blasting construction is bound to bring great safety hazard to railway traffic safety as the blasting point is under the railway or near the business line. Therefore, the selection of blasting schemes and the blasting safety control are especially important. Mainly in the State Road 205 Xinyi line under the section of Longhai Railway overpass excavation rock blasting as an example to explore the jacking construction rock excavation blasting control.