地下厂房吊车梁岩台爆破开挖试验研究EXPERIMENTAL STUDY ON BLASTING EXCAVATION OF ROCK BENCH FOR CRANE BEAM IN UNDERGROUND WORKSHOP
祝文化,李元章,程康,沈洁
ZHU Wen-hua~1; LI Yuan-zhang~1; CHENG Kang~1; SHEN Jie~2 (1. Wuhan University of Technology;
摘要(Abstract)：
为了在复杂地质条件下爆破开挖吊车梁岩台 ,进行了垂直孔或水平孔光爆以及垂直孔预裂等开挖方案试验。通过不同开挖方案爆破效果的分析和比较 ,确定了能使岩台成型良好的开挖方式和爆破顺序。爆破后利用声波法测定了围岩破坏深度。检测结果表明 ,围岩破坏深度较浅 ,所确定的开挖方式和爆破顺序能够保证吊车梁施工与运行期的安全。
In order that rock bench for crane beam is excavated by blasting in complex geological condition,the excavation schemes such as smooth blasting with vertical or horizontal holes and presplitting with vertical holes are tested.Through analyzing and comparing the blasting results of different excavation schemes,the excavation mode and blasting sequence by which the rock bench with a qualified shape can be formed are determined.After blasting,a sonic method is used for measurement of the damage depth of the country rock.Testing results show that the damage depth of the country rock is less and the determined excavation mode and blasting sequence can ensure the safety of the crane beam during its construction and running.
关键词(KeyWords)：
岩锚梁;光面爆破;预裂爆破;声波法
Crane beam anchored on rock wall; Smooth blasting; Presplit blasting; Sonic method
基金项目(Foundation):
作者(Authors):
祝文化,李元章,程康,沈洁
ZHU Wen-hua~1; LI Yuan-zhang~1; CHENG Kang~1; SHEN Jie~2 (1. Wuhan University of Technology;
参考文献(References)：
- 〔1〕丁隆灼.水电站地下厂房岩锚梁施工综述[J].工程爆破,1996,2(4):80-84.
- 〔2〕黎汉皋.鲁布格水电站厂房开挖与锚喷支护[J].水力发电,1988(12):69-70.
- 〔3〕沈 洁,程 康,黄 霖,许华山.百色水利枢纽地下厂房岩壁梁岩台开挖二序工法研究[J].爆破,2003,20(2):29-30.
- 〔4〕李彬峰,潘国斌.光面爆破和预裂爆破参数研究[J].爆破,1998,15(2):14-18.
- 〔5〕徐 颖,方江华.光面爆破合理炮孔密集系数的研究[J].工程爆破,1998,4(1):25-29.
- 〔6〕阳天海,龙 源,顾文彬,夏卫国.光面、预裂爆破参数选择与质量措施研究[J].爆破,2000,17(1):10-13.