构造发育区域地应力模拟及灾害判释研究

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (762 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Research purposes: With the continuous extension of China's road network, its construction area gradually tends to be structurally developed, difficult and complex mountainous areas. With the strong tectonic movement, this kind of construction area is pregnant with complex in-situ stress state. Rock burst and large deformation are inevitable in deep buried engineering rock mass. It is necessary to fully rely on the measured in-situ stress data and carry out numerical simulation analysis to obtain the three-dimensional in-situ stress state of the engineering environment from point to surface. After that, according to the early construction projects in such areas, the data of rock burst and large deformation are revealed, and the data of survey and design stage and construction stage are compared and analyzed. Finally, reasonable and effective suggestions for the analysis and determination of rock burst and large deformation of soft rock are put forward.
Research conclusions: (1)With the extremely complex stress state, the deep buried tunnel project is easy to produce rock burst under the condition of hard rock, and it is easy to produce large deformation under the condition of broken soft rock.(2)Based on the representative in-situ stress test results, the inversion analysis of the in-situ stress field of the site by numerical simulation is an effective and feasible method to comprehensively analyze the in-situ stress characteristics of the site.(3)Based on the limited in-situ stress test data, relying on the geological survey data of the region, combined with the topography, lithology and related structures, the numerical model is constructed based on the finite element method, and the three-dimensional in-situ stress data of the tunnel site area is finally obtained. Through the comparative analysis of the simulated data and the measured data, it is verified that the data are in good agreement. At the same time, the characteristics of ground stress in the tunnel site are revealed.(4)The analysis and judgment of rock burst and large deformation need to be appropriately corrected based on the empirical data after the completion of the actual project. By comparing and analyzing the differences between the actual results of the construction stage and the predicted results of the survey and design stage, the analysis and judgment criteria closer to the engineering experience are proposed. These criteria can be used as reference for the investigation and design of similar projects in the future, so as to reasonably control the engineering risk and investment.

Key words： rock burst large deformation of soft rock in-situ stress measurement numerical simulation analysis and judgment

Received: 11 October 2023

PACS:

U212.22

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LI Guosheng

Cite this article:

LI Guosheng. Study on In-situ Stress Simulation and Disaster Interpretation in Structural Development Area[J]. Journal of Railway Engineering Society, 2023, 40(12): 25-29.

URL:

https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2023/V40/I12/25

[1]	蔡美峰,乔兰李,华斌.地应力测量原理和技术[M].北京:科学出版社,1995.Cai Meifeng,Qiao Lanli,Hua Bin.The Principle and Technology of Ground Stress Measurement[M].Beijing:Science Press,1995.
[2]	康红普,林健,张晓.深部矿井地应力测量方法研究与应用[J].岩石力学与工程学报,2007(5):929-933.Kang Hongpu,Lin Jian,Zhang Xiao. Research and Application of In-situ Stress Measurement in Deep Mines[J]. Chinese Journal of Rock Mechanics and Engineering,2007(5):929-933.
[3]	李金锁,彭华,马秀敏,等.水压致裂地应力测试方法在云南大理-丽江铁路隧道工程中的应用[J].地质通报,2006(5):644-648.Li Jinsuo,Peng Hua,Ma Xiumin,etc.Application of Hydraulic Fracturing In-situ Stress Measurements to Tunneling along the Dali-Lijiang Railway, Yunnan,China[J].Geological Bulletin of China,2006(5):644-648.
[4]	谢红强,何江达,肖明砾.大型水电站厂区三维地应力场回归反演分析[J].岩土力学,2009(8):2471-2476.Xie Hongqiang,He Jiangda,Xiao Mingli.Regression Analysis of 3D Initial Geostress in Region of Underground Powerhouse for Large Hydropower Station[J].Rock and Soil Mechanics,2009(8):2471-2476.
[5]	赵辰,肖明,陈俊涛.复杂地质条件下初始地应力场反演分析方法[J].华中科技大学学报:自然科学版,2017(8):87-92.Zhao Chen,Xiao Ming,Chen Juntao.Inversion Analysis Method for In-situ Stress Field under Complex Geological Conditions[J]. Journal of Huazhong University of Science and Technology:Natural Science Edition,2017(8):87-92.
[6]	李静,刘晨,刘惠民,等.复杂断层构造区地应力分布规律及其影响因素[J].中国矿业大学学报,2021(1):123-137.Li Jing,Liu Chen,Liu Huimin,etc.Distribution and Influencing Factors of In-situ Stress in Complex Fault Tectonic Region[J].Journal of China University of Mining and Technology,2021(1):123-137.
[7]	朱明德,王照亚,张月征,等.基于水压致裂法的三山岛深竖井工程区地应力测量与反演分析[J].地质力学学报,2023(6):430-441.Zhu Mingde,Wang Zhaoya,Zhang Yuezheng,etc.In-situ Stress Measurement and Inversion Analysis of the Deep Shaft Project Area in Sanshan Island Based on Hydraulic Fracturing Method[J].Journal of Geomechanics,2023(6):430-441.
[8]	张广泽,贾哲强,冯君,等.铁路隧道双指标高地应力界定及岩爆大变形分级标准[J].铁道工程学报,2022(8):53-58.Zhang Guangze,Jia Zheqiang,Feng Jun,etc.Definition for Dual-index High Geostress and Classification Standard for Rock Burst and Large Deformation in Railway Tunnels [J].Journal of Railway Engineering Society,2022(8):53-58.