双断层地下洞室稳定性快速分析方法研究

刘乃飞; 李宁; 菅强

doi:10.3969/j.issn.1001-5485.2014.11.0252014,31(11):125-130

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长江科学院院报 ›› 2014, Vol. 31 ›› Issue (11) : 125-130. DOI: 10.3969/j.issn.1001-5485.2014.11.0252014,31(11):125-130

地下洞室围岩稳定

双断层地下洞室稳定性快速分析方法研究

刘乃飞¹,李宁^1,2,菅强^1,3

作者信息 +

Rapid Analysis Method for the Stability of Underground Chambers with Double Faults

LI Ning^1,2, LIU Nai-fei¹, JIAN Qiang^1,3

Author information +

文章历史 +

摘要

针对当前商业软件分析速度难以满足信息化施工时效性的这一关键难题,结合课题组多年的研究成果,提出了一种全新的解决思路。首先概化出对隧洞稳定性影响较大的4大类15个参数,并拟定系统的数值试验方案;然后建立数值分析结果和各影响因素的关系数据库,并以此为样本借助BP神经网络技术构建双断层洞室稳定性快速分析系统;最后用该系统对拉西瓦水电站厂房稳定性进行了分析。洞周变形误差小于20%,满足工程要求,表明该系统具有较好的可靠性。

Abstract

The analysis speed of commercial softwares cannot meet the timeliness requirements of information construction. In view of this, an entirely new idea is proposed in this paper. Firstly, 4 groups including 15 parameters which have significant impacts on the stability of tunnel are generalized and test plan is drawn up. Subsequently the relational database of numerical analysis results and the main influences is established, and the rapid analysis and evaluation system for underground chamber with double faults is built up with the help of BP neural network. This system is employed to analyze the stability of the powerhouse of Laxiwa hydropower station. The error of peripheral deformation is less than 20%, which meets the engineering requirements and shows a good reliability of this system.

导出引用

刘乃飞,李宁,菅强. 双断层地下洞室稳定性快速分析方法研究[J]. 长江科学院院报. 2014, 31(11): 125-130 https://doi.org/10.3969/j.issn.1001-5485.2014.11.0252014,31(11):125-130

LI Ning, LIU Nai-fei, JIAN Qiang. Rapid Analysis Method for the Stability of Underground Chambers with Double Faults[J]. Journal of Changjiang River Scientific Research Institute. 2014, 31(11): 125-130 https://doi.org/10.3969/j.issn.1001-5485.2014.11.0252014,31(11):125-130

中图分类号： TU45

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