基于GSI分级的小断面引水隧洞超欠挖预测与钻爆参数优化研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (4420 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为解决小断面引水隧洞开挖过程中因围岩等级频繁变更导致爆破超欠挖难以控制的问题，依托犬木塘引水隧洞工程，开展爆破损伤量化预测与效果优化研究。基于图像三维重建技术，建立超欠挖与GSI分级间的关系，以实际炮孔位置建立数值模型，通过量化的GSI分级方法与Hoek-Brown准则计算数值模拟中不断变化的围岩力学参数，模拟爆破损伤，并将损伤结果与实际超欠挖进行对比分析。然后，基于该方法对超欠挖进行预测并优化钻爆参数。研究结果表明，爆破数值损伤轮廓与实际开挖轮廓基本吻合，模拟的每延米超挖体积与现场实测每延米超挖体积和喷射混凝土量的平均误差仅分别为2.54%和5.20%。通过预测不同周边眼间距下岩体损伤，对周边眼间距进行优化，优化后无欠挖产生，且超挖控制在设计允许范围内。通过关联GSI值与BQ值，计算研究段隧洞穿越的II～V级围岩力学参数范围，预测不同周边眼间距下各级岩体超欠挖，得到对II～III，IV～V级围岩建议周边孔间距分别为55和50 cm。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	罗钰博1
	阳军生1
	詹双桥2
	张庆彬3
	陈运财2
	张聪4

关键词 ：隧道工程, 引水隧洞, GSI分级, 超欠挖, 爆破效果预测, 爆破优化

Abstract：To address the challenge of excessive over-under excavation often encountered in the excavation of small-section diversion tunnels due to frequent changes in rock grades，this research investigates quantitative damage prediction and the optimization of blasting effects. The Quanmutang Diversion Tunnel Project was chosen as the case study. Utilizing three-dimensional image reconstruction technology，a relationship between over-under excavation and GSI classification was established. A numerical model was constructed based on actual blasting hole positions，and the mechanical parameters of the surrounding rock，which change continuously，were calculated in the numerical simulation based on a quantified GSI classification method and the Hoek-Brown criterion. Blasting damage was then simulated，and the results were compared with actual over-under excavation for analysis. Subsequently，based on this method，over-under excavation was predicted，and blasting parameters were optimized. The results show that the simulated contour of blasting damage closely matches the actual excavation contour，with an average error of only 2.54% for the simulated over-excavation volume per meter and 5.20% for the field-measured over-excavation volume and shotcrete amount per meter. After predicting rock mass damage under various peripheral hole spacings，blasting parameters were optimized，resulting in no under-excavation and over-excavation was controlled within the design allowable range. By correlating the GSI value with the BQ value，the mechanical parameter ranges for surrounding rock grades II to V are calculated. Over-under excavation for each rock grade under different peripheral hole spacings is predicted，resulting in recommended peripheral hole spacings of 55 cm for grade II–III and 50 cm for grade IV–V surrounding rocks.

引用本文:

罗钰博1，阳军生1，詹双桥2，张庆彬3，陈运财2，张聪4. 基于GSI分级的小断面引水隧洞超欠挖预测与钻爆参数优化研究[J]. 岩石力学与工程学报, 2024, 43(12): 3032-3043.
LUO Yubo1，YANG Junsheng1，ZHAN Shuangqiao2，ZHANG Qingbin3，CHEN Yuncai2，ZHANG Cong4. Prediction of over-under excavation and optimization of blasting parameters in small section diversion tunnels based on GSI classification. , 2024, 43(12): 3032-3043.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2024/V43/I12/3032

[1]	陈明，胡英国，卢文波，等. 锦屏二级水电站引水隧洞爆破开挖损伤特性研究[J]. 岩土力学，2011，32(增2)：172–177.(CHEN Ming，HU Yingguo，LU Wenbo，et al. Blasting excavation induced damage characteristics of diversion tunnel for Jinping cascade II hydropower station[J]. Rock and Soil Mechanics，2011，32(Supp.2)：172–177.(in Chinese))
[2]	傅帅旸，李海波，吴迪，等. 基于波速场反演的爆破损伤区范围界定研究[J]. 岩石力学与工程学报，2024，43(增1)：3 257–3 266. (FU Shuaiyang，LI Haibo，WU Di，et al. Study on the quantitative definition of blasting damage zone scope based on wave velocity field inversion[J]. Chinese Journal of Rock Mechanics and Engineering，2024，43(Supp.1)：3 257–3 266.(in Chinese))
[3]	孙露. 某引水隧洞开挖钻爆法施工爆破参数的优化[J]. 人民黄河，2017，39(5)：119–121.(SUN Lu. Optimization of blasting parameters for drilling and blasting construction of diversion tunnel excavation[J]. Yellow River，2017，39(5)：119–121.(in Chinese))
[4]	陶铁军，万嗣鹏，罗毅. 西南地区小断面隧道开挖技术研究[J].公路，2019，64(11)：264–269.(TAO Tiejun，WAN Sipeng，LUO Yi. Excavation technology of small section tunnel in Southwest China[J]. Highway，2019，64(11)：264–269.(in Chinese))
[5]	吕明，李赤谋，陈培帅，等. 基于三维图像重建的隧道围岩超欠挖与[BQ]值相关性研究[J]. 现代隧道技术，2021，58(增1)：394–402. (LV Ming，LI Chimou，CHEN Peishuai，et al. Study on correlation between over-/under excavation of tunnel surrounding rock and[BQ] value based on three-dimensional image reconstruction[J]. Modern Tunnelling Technology，2021，58(Supp.1)：394–402.(in Chinese))
[6]	陆中玏，吴立，李波，等. 地质参数分析与隧道超挖预测优化研究[J]. 现代隧道技术，2015，52(3)：189–192.(LU Zhongle，WU Li，LI Bo，et al. Optimization of tunnel overbreak prediction based on geological parameter analyses[J]. Modern Tunnelling Technology，2015，52(3)：189–192.(in Chinese))
[7]	耿晓杰，吴顺川，高永涛，等. 基于多因素评价的隧道围岩质量与超欠挖关系[J]. 岩土力学，2014，35(11)：3 240–3 246.(GENG Xiaojie，WU Shunchuan，GAO Yongtao，et al. Relationship between surrounding rock quality based on multifactor evaluation and overbreak-underbreak of tunnels[J]. Rock and Soil Mechanics，2014，35(11)：3 240–3 246.(in Chinese))
[8]	TIAN X C，TAO T J，LIU X，et al. Calculation of hole spacing and surrounding rock damage analysis under the action of in situ stress and joints[J]. Scientific Reports，2022，12(1)：22331.
[9]	WANG J X，CAO A S，LIU J X，et al. Numerical simulation of rock mass structure effect on tunnel smooth blasting quality：A case study[J]. Applied Sciences，2021，11(22)：10761.
[10]	丁家仁，曹华彰，蒋楠，等. 引水隧洞光面爆破参数优化数值模拟及现场试验研究[J]. 安全与环境工程，2023，30(5)：46–53. (DING Jiaren，CAO Huazhang，JIANG Nan，et al. Numerical optimization and field test of smooth blasting parameters for diversion tunnel[J]. Safety and Environmental Engineering，2023，30(5)：46–53.(in Chinese))
[11]	李锦航，宋战平，杨棚涛，等. 隧道光面爆破炮孔优化及控制技术研究进展与展望[J]. 现代隧道技术，2024，61(1)：36–47.(LI Jinhang，SONG Zhanping，YANG Pengtao，et al. Progress and outlook of the study on blast hole optimization and control technologies for tunnel smooth blasting[J]. Modern Tunnelling Technology，2024，61(1)：36–47.(in Chinese))
[12]	万嗣鹏，陶铁军，陈二平，等. 小断面隧道快速掘进爆破方案优化研究[J]. 中国矿业，2020，29(11)：178–183.(WAN Sipeng，TAO Tiejun，CHEN Erping，et al. Study on optimization of blasting scheme for fast tunneling of small section tunnel[J]. China Mining Magazine，2020，29(11)：178–183.(in Chinese))
[13]	秦桂芳，曾灿，徐间锋，等. 基于HJC损伤本构模型的灰岩隧道光面爆破数值模拟及工程验证[J]. 爆破器材，2022，51(6)：45–51.(QIN Guifang，ZENG Can，XU Jianfeng，et al. Numerical simulation and engineering verification of smooth blasting in limestone tunnel based on HJC damage constitutive model[J]. Explosive Materials，2022，51(6)：45–51.(in Chinese))
[14]	胡盛明，胡修文. 基于量化的GSI系统和Hoek-Brown准则的岩体力学参数的估计[J]. 岩土力学，2011，32(3)：861–866.(HU Shengming，HU Xiuwen. Estimation of rock mass parameters based on quantitative GSI system and Hoek-Brown criterion[J]. Rock and Soil Mechanics，2011，32(3)：861–866.(in Chinese))
[15]	祝志恒，傅金阳，阳军生. 隧道开挖支护质量3DZI检测技术及应用研究[J]. 中国公路学报，2020，33(12)：176–189.(ZHU Zhiheng，FU Jinyang，YANG Junsheng. Quality detection for tunnel excavation and support based on 3DZl[J]. China Journal of Highway and Transport，2020，33(12)：176–189.(in Chinese))
[16]	ZHU Z H，FU J Y，YANG J S ，et al. Panoramic image stitching for arbitrarily shaped tunnel lining inspection[J]. Computer-Aided Civil and Infrastructure Engineering，2016，31(12)：936–953.
[17]	阳军生，张宇，祝志恒，等. 基于图像三维重建的隧道超欠挖检测方法研究[J]. 中南大学学报：自然科学版，2020，51(3)：714–723.(YANG Junsheng，ZHANG Yu，ZHU Zhiheng，et al. Study on tunnel under-over break detection method based on three-dimensional image reconstruction technology[J]. Journal of Central South University：Science and Technology，2020，51(3)：714–723.(in Chinese))
[18]	CAI M，KAISER P K，UNO H，et al. Estimation of rock mass deformation modulus and strength of jointed hard rock masses using the GSI system[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(1)：3–19.
[19]	HOEK E，BROWN E T. Practical estimates of rock mass strength[J]. International Journal of Rock Mechanics and Mining Sciences，1997，34(8)：1 165–1 186.
[20]	MARINOS P，HOEK E. GSI：a geologically friendly tool for rock mass strength estimation[C]// Proceedings of Geoengineering 2000 Conference. Melbourne：[s. n.]，2000：1 422–1 442.
[21]	WANG H T，HE M M，ZHANG Z Q，et al. Determination of the constant mi in the Hoek-Brown criterion of rock based on drilling parameters[J]. International Journal of Mining Science and Technology，2022，32(4)：747–759.
[22]	HOLMQUIST T J，JOHNSON G R. A computational constitutive model for glass subjected to large strains，high strain rates and high pressures[J]. Journal of Applied Mechanics，2011，78(5)：051003.
[23]	方秦，孔祥振，吴昊，等. 岩石Holmquist-Johnson-Cook模型参数的确定方法[J]. 工程力学，2014，31(3)：197–204.(FANG Qin，KONG Xiangzhen，WU Hao，et al. Determination of Holmquist- Johnson-Cook constitutive model parameters of rock[J]. Engineering Mechanics，2014，31(3)：197–204. (in Chinese))
[24]	WANG Z L，WANG H C，WANG J G，et al. Finite element analyses of constitutive models performance in the simulation of blast-induced rock cracks[J]. Computers and Geotechnics，2021，135：104172.
[25]	赵铮，陶钢，杜长星. 爆轰产物JWL状态方程应用研究[J]. 高压物理学报，2009，23(4)：277–282.(ZHAO Zheng，TAO Gang，DU Changxing. Application research on JWL equation of state of detonation products[J]. Chinese Journal of High Pressure Physics，2009，23(4)：277–282.(in Chinese))
[26]	HASHEMI M，MOGHADDAS S H，AJALLOEIAN R. Application of rock mass characterization for determining the mechanical properties of rock mass：a comparative study[J]. Rock Mechanics and Rock Engineering，2010，43(3)：305–320.
[27]	许宏发，陈锋，王斌，等. 岩体分级BQ与RMR的关系及其力学参数估计[J]. 岩土工程学报，2014，36(1)：195–198.(XU Hongfa，CHEN Feng，WANG Bin，et al. Relationship between RMR and BQ for rock mass classification and estimation of its mechanical parameters[J]. Chinese Journal of Geotechnical Engineering，2014，36(1)：195–198.(in Chinese))
[28]	中华人民共和国行业标准编写组. GB/T 50218—2014 工程岩体分级标准[S]. 北京：中国计划出版社，2015.(The Professional Standards Compilation Group of People?s Republic of China. GB/T 50218—2014 Standard for engineering classification of rock mass[S]. Beijing：China Planning Press，2015.(in Chinese))