Huang Banma, Chen Haibo, Duan Chenglong, Li Wenhu
Qinghai Traffic Engineering Technical Service Center, Xining, Qinghai 810001, China.
China-Road Transportation Verification and Inspection Hi-Tech Co., Ltd., Beijing 100088, China.
Int J Anal Chem. 2022 Aug 31;2022:2211499. doi: 10.1155/2022/2211499. eCollection 2022.
In order to improve the construction method of highway tunnel fault, improve the excavation level, improve the construction efficiency, reduce the project cost, and shorten the construction period, so as to find a specific road, this paper puts forward the research method of tunnel stability analysis and construction parameter optimization in the fault fracture zone. First, this paper analyzes the specific geographical and geological environment of the construction site. Second, this paper compares and analyzes the effects of the drilling and blasting method and full-face tunnel boring machine (TBM) in construction and further analyzes the surrounding rock deformation, over excavation, and under excavation, as well as the range of loose circles when the surrounding rock is stable. Then, this paper discusses the minimum smooth blasting parameters under these conditions. Finally, the actual blasting effect of tunnel construction is tested and the optimization algorithm model of tunnel fault drilling and blasting parameters is established. The results show that the proposed optimization model of drilling and blasting construction parameters for highway tunnel faults based on the Support Vector Regression (SVR) algorithm combined with a genetic algorithm (GA) has a short calculation time and high parameter optimization accuracy. It is very feasible to optimize the construction parameters of the fault drilling and blasting method, which can greatly improve the construction efficiency, carry out the detailed simulation, reduce the cost, and increase safety. In summary, it has a certain reference significance for the optimization of highway tunnel construction and future research by drilling and blasting method under complex geological conditions in my country.
为改善公路隧道断层施工方法，提高开挖水平，提升施工效率，降低工程造价，缩短施工工期，进而找到一种具体可行的方法，本文提出了断层破碎带隧道稳定性分析及施工参数优化的研究方法。首先，本文分析了施工现场的具体地理和地质环境。其次，本文对比分析了钻爆法和全断面隧道掘进机（TBM）在施工中的效果，并进一步分析了围岩变形、超挖和欠挖情况，以及围岩稳定时松动圈的范围。然后，本文探讨了在这些条件下的最小光面爆破参数。最后，对隧道施工的实际爆破效果进行了测试，并建立了隧道断层钻爆参数优化算法模型。结果表明，基于支持向量回归（SVR）算法结合遗传算法（GA）提出的公路隧道断层钻爆施工参数优化模型计算时间短，参数优化精度高。对断层钻爆法施工参数进行优化是非常可行的，能够大幅提高施工效率，进行详细模拟，降低成本，并提高安全性。综上所述，对于我国复杂地质条件下钻爆法公路隧道施工优化及未来研究具有一定的参考意义。
