[1]曹洋兵,程志伟,黄真萍*,等.地下水封洞库施工巷道开挖对仰坡稳定性的影响规律[J].山地学报,2020,(01):62-72.[doi:10.16089/j.cnki.1008-2786.000491]
 CAO Yangbing,CHENG Zhiwei,HUANG Zhenping*,et al.Influence Law of Access Tunnel Excavation on the Stability of the Entrance Slope of Underground Water-Sealed Cavern[J].Mountain Research,2020,(01):62-72.[doi:10.16089/j.cnki.1008-2786.000491]
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地下水封洞库施工巷道开挖对仰坡稳定性的影响规律()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2020年01期
页码:
62-72
栏目:
山地灾害
出版日期:
2020-01-30

文章信息/Info

Title:
Influence Law of Access Tunnel Excavation on the Stability of the Entrance Slope of Underground Water-Sealed Cavern
文章编号:
1008-2786-(2020)1-062-11
作者:
曹洋兵123程志伟13黄真萍123*詹淦基13
1.福州大学 环境与资源学院,福州 350116; 2.国土资源部 丘陵山地地质灾害防治重点实验室(福建省地质灾害重点实验室),福州 350116; 3.地质工程福建省高校工程研究中心,福州 350116
Author(s):
CAO Yangbing123 CHENG Zhiwei13 HUANG Zhenping123* ZHAN Ganji13
1. College of Environmental and Resources, Fuzhou University, Fuzhou 350116, China; 2. Key Laboratory of Geohazard Prevention of Hilly Mountains, Ministry of Land and Resources (Fujian Key Laboratory of Geohazard Prevention), Fuzhou 350116, China; 3. Engineering Research Center of Geological Engineering of Fujian Provincial Universities, Fuzhou 350116, China
关键词:
巷道开挖 巷道断面 风化花岗岩 边坡仰坡 洞口段
分类号:
U45
DOI:
10.16089/j.cnki.1008-2786.000491
文献标志码:
A
摘要:
巷道或隧道开挖对洞口仰坡稳定性有重要影响,处理不慎极易酿成工程事故。以山东某地下水封洞库施工巷道洞口风化花岗岩仰坡为研究对象,基于离散元模拟和监测数据,选取仰坡最大位移、塑性区体积及稳定系数作为评价指标,研究了巷道开挖进尺、断面尺寸及W值(上覆地层厚度与巷道跨度之比)对仰坡稳定性的影响。结果表明:随着开挖进尺的增加,坡面最大位移增长速率呈匀速—加速—稳定的变化规律,塑性区体积不断增大,且开挖断面越大,位移、塑性区增长速率越大; 仰坡稳定系数随进尺的增加先降低后趋于稳定,且断面尺寸越大其降低速率和幅度越大,最终降低幅度为6.9%~27.6%; 随着W值增大,仰坡稳定系数先降低后趋于稳定,降低速率随断面尺寸增大而增大,根据特定断面下稳定系数降低速率不同,将关系曲线划分为骤降区、缓降区、陡降区和平稳区。研究结论可为类似工程洞口段划分、施工及稳定性评价提供参考。

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备注/Memo

备注/Memo:
收稿日期(Received date):2019-07-23; 修回日期(Accepted date):2020-01-01
基金项目(Foundation item):福建省自然科学基金项目(2019J05036); 国土资源部丘陵山地地质灾害防治重点实验室(福建省地质灾害重点实验室)开放基金项目(FJKLGH2017K004,FJKLGH2017K002); 岩土钻掘与防护教育部工程研究中心开放基金项目(201702)。 [Fujian Province Natural Science Foundation(2019J05036); Key Laboratory of Geohazard Prevention of Hilly Mountains, Ministry of Land and Resources(Fujian Key Laboratory of Geohazard Prevention)(FJKLGH2017K004, FJKLGH2017K002); Open Fund of Engineering Research Center of Ministry of Education(201702)]
作者简介(Biography):曹洋兵(1987-),男,博士,副教授,主要研究方向:岩质边坡稳定性评价及地下水封洞库工程。 [CAO Yangbing(1987-), male, Ph.D. associate professor, research on rock slope stability evaluation and underground water-sealed cavern] E-mail: ybcao@fzu.edu.cn.
*通讯作者(Corresponding author):黄真萍(1965-),女,硕士,教授,主要研究方向:工程地质物探技术。 [HUANG Zhenping(1965-), female,M.Sc., professor, research on geophysical exploration technology] E-mail: zhphuang@126.com
更新日期/Last Update: 2020-01-30