薛里;
XUE Li;China Academy of Railway Sciences Corporation Limited;

• 1:中国铁道科学研究院集团有限公司

摘要(Abstract)：

针对贵广铁路GGTJ-2标DK120+692^DK120+874段的地质条件,在综合了光面爆破和预裂爆破特点的基础上,提出了边坡控制爆破改进技术,结合钻孔角度精确定向技术和爆破参数优化方法,优化起爆顺序,实现了软弱围岩边坡的精准控制爆破。通过现场应用,爆后边坡平整美观,半孔率达到了90%;同时降低了保留岩体的损伤,增加了保留边坡岩体的稳定性,为以后在软弱岩层条件下进行路堑边坡爆破开挖提供了参考。
According to the geological conditions of Guiyang Guangzhou railway GGTJ-2 DK120+692DK120+874段的地质条件,在综合了光面爆破和预裂爆破特点的基础上,提出了边坡控制爆破改进技术,结合钻孔角度精确定向技术和爆破参数优化方法,优化起爆顺序,实现了软弱围岩边坡的精准控制爆破。通过现场应用,爆后边坡平整美观,半孔率达到了90%;同时降低了保留岩体的损伤,增加了保留边坡岩体的稳定性,为以后在软弱岩层条件下进行路堑边坡爆破开挖提供了参考。
According to the geological conditions of Guiyang Guangzhou railway GGTJ-2 DK120+692 DK120+874 section,the improved slope control blasting technique is put forward based on the characteristics of smooth blasting and pre splitting blasting,combined with drilling angle precise directional technology and blasting parameters optimization method,and the sequence of detonation is optimized,and the precise control blasting of the soft surrounding rock slope is realized.Through the field application,the slope is beautiful after blasting,and the half-hole rate reaches 90%.At the same time,the damage of retaining rock mass is reduced,and the stability of the rock mass is increased,which provides a reference for the excavation of the cutting slope under the condition of soft rock in the future.

关键词(KeyWords)： 路堑边坡;控制爆破;装药结构;钻孔精度
cutting slope;controlling blasting;charging structure;drilling precision

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 薛里;
XUE Li;China Academy of Railway Sciences Corporation Limited;

参考文献(References)：

• [1]中华人民共和国铁道部.铁路路堑边坡光面(预裂)爆破技术规程:TB10122-2008[S].北京:中国铁道出版社,2008.Ministry of Railways of the People's Republic of China.Code for smooth(presplitting)blasting on cutting of railway:TB10122-2008[S].Beijing:China Railway Publishing House,2008.
• [2]中国铁道科学研究院铁道建筑研究所.京沪高速铁路岩石边坡精准控制爆破技术的试验研究[R].北京:中国铁道科学研究院,2009.Railway Engineering Research Institute,China Academy of Railway Sciences.The experiment research of precise controlling blasting technique on jing-hu highspeed railway cutting slope[R].Beijing:China Academy of Railway Sciences,2009.
• [3]杨年华,薛里,孟海利,等.精准控制钻孔角度的定向装置研究[J].工程爆破,2011,17(1):39-42.YANG N H,XUE L,MENG H L,et al.Study on precise control of drilling angle of orientation device[J].Engineering Blasting,2011,17(1):39-42.
• [4]陈晓波.光面爆破参数选择与质量控制措施[J].爆破,2006,23(1):39-41.CHEN X B.The selection of smooth blasting parameters[J].Blasting,2006,23(1):39-41.
• [5]汪旭光.爆破手册[M].冶金工业出版社,2010.WANG X G.Handbook of blasting[M].Metallurgical Iindustry Press,2010.
• [6]钱叶甫.光面、预裂爆破成缝原理[J].重庆大学学报,1994,17(1):126-130.QIAN Y F.The mechanism of smooth and precracking blasting[J].Journal of Chongqing University,1994,17(1):126-130.
• [7]黄郑华,左廷英,吴晓梦.高台阶爆破过程的高速摄影观测[J].矿冶工程,1997,17(4):1-5.HUANG Z H,ZUO T Y,WU X M.High speed photographic observation of the process of elevated bench blasting[J].Mining and Metallurgical Engineering,1997,17(4):1-5.