基于参数敏感分析的软弱破碎地层大断面隧道爆破质量优化
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摘要
受软弱破碎地层控制的大断面隧道爆破质量较难保证,如何针对既有的隧道爆破方案以最可靠的结论优化解决现场试验中爆破质量较难保证的难题亟待开展。本文结合改建贵昆铁路某隧道工程,对隧道爆破既有设计方案及其在开挖中存在的问题进行分析,并基于选取的隧道爆破质量敏感因素,建立了隧道爆破质量综合评价数学模型,采用极差分析法,对影响隧道爆破质量敏感因素的敏感程度进行分析并对隧道爆破方案进行优化设计,揭示了对隧道爆破质量具有显著敏感性的主要敏感因素。结果表明,提出的基于爆破质量敏感因素的敏感程度分析对软弱破碎地层隧道爆破质量进行优化设计的方法具有可操作性和实用性,能显著改善隧道爆破的质量。
It is difficult to warrant the blasting quality of large cross-section tunnel under the control of soft fractured rock mass. How to resolve the problem of poor quality of blasting test on the base of existing blasting solutions is an urgent need. This paper combined reconstructed Guiyang-Kunming railway tunnel, analyzed the existing blasting solutions and the construction problems, established the quality comprehensive evaluation model of tunnel based on the selected sensitivity factors, studied the sensitivity of blasting quality influence factors by range analysis, designed the tunnel blasting scheme,and revealed the main sensitivity factors. The results showed that the quality optimization of blasting in soft fractured rock mass based on the parameter sensitivity analysis introduced in this thesis is easy to adopt and operate, thus it can improve the quality of blasting.
It is difficult to warrant the blasting quality of large cross-section tunnel under the control of soft fractured rock mass. How to resolve the problem of poor quality of blasting test on the base of existing blasting solutions is an urgent need. This paper combined reconstructed Guiyang-Kunming railway tunnel, analyzed the existing blasting solutions and the construction problems, established the quality comprehensive evaluation model of tunnel based on the selected sensitivity factors, studied the sensitivity of blasting quality influence factors by range analysis, designed the tunnel blasting scheme,and revealed the main sensitivity factors. The results showed that the quality optimization of blasting in soft fractured rock mass based on the parameter sensitivity analysis introduced in this thesis is easy to adopt and operate, thus it can improve the quality of blasting.
引文
[1]蔡路军,马建军,朱以文,等.宋家湾连拱隧道控制爆破技术研究[J].现代隧道技术,2014,51(1):192-198.
[2]黄志强,吴立,邢心魁.复杂地质条件下大跨度隧道洞口爆破优化设计[J].爆破,2014,31(1):69-74.
[3]宋天宇,王述红,万明富,等.爆破施工下小净距隧道围岩稳定性分析[J].地下空间与工程学报,2013,9(2):380-386.
[4]柳明,张昌锁.复线隧道爆破优化设计与实践[J].金属矿山,2013,10:32-35-39.
[5]Feng X,Zhuang J,Ju J,et al.Smooth blasting hole spacing and smooth surface layer depth optimization[J].Advanced Science Letters,2011,4(8-10):2703-2707.
[6]邵晓宁,张道振.光面爆破技术在新武家庄隧道掘进中的应用[J].铁道建筑,2011,11:54-56.
[7]黄龙华.控制爆破技术在连拱隧道掘进应用的研究[J].工程爆破,2010,16(2):35-39.
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[10]Deya k,Murthy V.Prediction of blast-induced overbreak from uncontrolled burn-cut blasting in tunnels driven through medium rock class[J].Tunnelling and Underground Space Technology,2012,28:49-56.
[11]Maerz N,Ibarra J,Franklin J.Overbreak and underbreak in underground openings part 1:measurement using the light section method and digital image processing[J].Geotechnical and Geological Engineering,1996,12(2):307-323.
[12]Kuzu C,Guclu E.The problem of human response to blast induced vibrations in tunnel construction and mitigation of vibration effects using cautious blasting in halfface blasting rounds[J].Tunnelling and Underground Space Technology,2009,24:53-61.
[13]Kim Y,Moon H.Application of the guideline for overbreak control in granitic rock masses in Korean tunnels[J].Tunnelling and Underground Space Technology,2013,35:67-77.
[14]Zhao Z,Zhang Y,Bao H.Tunnel blasting simulations by the discontinuous deformation analysis[J].International Journal of Computational Methods,2011,8(2):277-292.
[15]Paul Singh S,Peter X.Causes,impact and control of overbreak in underground excavations[J].Tunnelling and Underground Space Technology,2005,20:63-71.
[16]傅鹤林,李凯,彭学军,等.梅关隧道工程施工技术[M].北京:科学出版社,2009.
[17]Adhikari G,Rajan Babu A,Balachander R,et al.On the application of rock mass quality for blasting in large underground chambers[J].Tunnelling and Underground Space Technology,1999,14(3):367-375.
[18]Henning G,Mitri H.Numerical modelling of ore dilution in blasthole stoping[J].International Journal of Rock Mechanics&Mining Sciences,2007,44:692-703.
[19]许树柏.实用决策方法-层次分析法原理[M].天津:天津大学出版社,1988.
[2]黄志强,吴立,邢心魁.复杂地质条件下大跨度隧道洞口爆破优化设计[J].爆破,2014,31(1):69-74.
[3]宋天宇,王述红,万明富,等.爆破施工下小净距隧道围岩稳定性分析[J].地下空间与工程学报,2013,9(2):380-386.
[4]柳明,张昌锁.复线隧道爆破优化设计与实践[J].金属矿山,2013,10:32-35-39.
[5]Feng X,Zhuang J,Ju J,et al.Smooth blasting hole spacing and smooth surface layer depth optimization[J].Advanced Science Letters,2011,4(8-10):2703-2707.
[6]邵晓宁,张道振.光面爆破技术在新武家庄隧道掘进中的应用[J].铁道建筑,2011,11:54-56.
[7]黄龙华.控制爆破技术在连拱隧道掘进应用的研究[J].工程爆破,2010,16(2):35-39.
[8]Mandal S,Singh M.Evaluating extent and causes of overbreak in tunnels[J].Tunnelling and Underground Space Technology,2009,24:22-36.
[9]张鸿,方华,尚爱国,等.公路隧道光面爆破技术研究及应用[J].公路隧道,2007,2:5-10.
[10]Deya k,Murthy V.Prediction of blast-induced overbreak from uncontrolled burn-cut blasting in tunnels driven through medium rock class[J].Tunnelling and Underground Space Technology,2012,28:49-56.
[11]Maerz N,Ibarra J,Franklin J.Overbreak and underbreak in underground openings part 1:measurement using the light section method and digital image processing[J].Geotechnical and Geological Engineering,1996,12(2):307-323.
[12]Kuzu C,Guclu E.The problem of human response to blast induced vibrations in tunnel construction and mitigation of vibration effects using cautious blasting in halfface blasting rounds[J].Tunnelling and Underground Space Technology,2009,24:53-61.
[13]Kim Y,Moon H.Application of the guideline for overbreak control in granitic rock masses in Korean tunnels[J].Tunnelling and Underground Space Technology,2013,35:67-77.
[14]Zhao Z,Zhang Y,Bao H.Tunnel blasting simulations by the discontinuous deformation analysis[J].International Journal of Computational Methods,2011,8(2):277-292.
[15]Paul Singh S,Peter X.Causes,impact and control of overbreak in underground excavations[J].Tunnelling and Underground Space Technology,2005,20:63-71.
[16]傅鹤林,李凯,彭学军,等.梅关隧道工程施工技术[M].北京:科学出版社,2009.
[17]Adhikari G,Rajan Babu A,Balachander R,et al.On the application of rock mass quality for blasting in large underground chambers[J].Tunnelling and Underground Space Technology,1999,14(3):367-375.
[18]Henning G,Mitri H.Numerical modelling of ore dilution in blasthole stoping[J].International Journal of Rock Mechanics&Mining Sciences,2007,44:692-703.
[19]许树柏.实用决策方法-层次分析法原理[M].天津:天津大学出版社,1988.