[1]林礼华.新建隧道施工对既有煤矿巷道稳定性影响研究[J].福建工程学院学报,2019,17(04):326-330.[doi:10.3969/j.issn.1672-4348.2019.04.004]
 LIN Lihua.Effects of new tunnel construction on the stability of existing coal-mine roadways[J].Journal of FuJian University of Technology,2019,17(04):326-330.[doi:10.3969/j.issn.1672-4348.2019.04.004]
点击复制

新建隧道施工对既有煤矿巷道稳定性影响研究()
分享到:

《福建工程学院学报》[ISSN:2097-3853/CN:35-1351/Z]

卷:
第17卷
期数:
2019年04期
页码:
326-330
栏目:
出版日期:
2019-08-25

文章信息/Info

Title:
Effects of new tunnel construction on the stability of existing coal-mine roadways
作者:
林礼华
福建省交通规划设计院有限公司
Author(s):
LIN Lihua
Fujian Communications Planning & Design Institute CO., LTD,
关键词:
交叉隧道围岩应力巷道变形施工方法Midas/ GTS NX 软件
Keywords:
intersecting tunnel stress of surrounding rocks roadway deformation construction method Midas/GTS NX software
分类号:
TU457
DOI:
10.3969/j.issn.1672-4348.2019.04.004
文献标志码:
A
摘要:
针对翠屏山隧道与翠屏山煤矿巷道交叉段的特殊工况,分析新建隧道施工对围岩和煤矿巷道变形和应力的影响,通过有限元数值模拟验证现场施工工法的可靠性。研究结果表明:隧道开挖引起下方巷道拱顶最大沉降量为4.6mm,仰拱最大隆起量为0.7mm;新建隧道开挖产生卸荷作用,巷道顶部受到上部土体的约束而产生压应力,最大主压应力为1.85MPa;隧道开挖前后最大主应力变化比例值最大值为42%,位于新建隧道与既有煤矿交叉处;近接隧道施工时,交叉段内地质条件较差时,采用双侧壁导坑法施工,隧道开挖引起的围岩变形量较小,施工方法较合理。
Abstract:
According to the special working conditions of the crossing section of Cuipingshan Tunnel and Cuipingshan Coal-mine Roadway, the effects of new tunnel construction on the deformation and the stress of surrounding rocks and coal-mine roadways were analyzed. The reliability of on-site construction method was verified by finite element numerical simulation. Results show that the maximum settlement of the tunnel roof caused by tunnel excavation is 4.6mm, and the maximum uplift of the inverted arch is 0.7mm. The excavation of the new tunnel creates an unloading effect, and the top of the roadway is constrained by the upper soil to generate a compressive stress and the maximum principal compressive stress is 1.85 MPa. The maximum value of the maximum principal stress change before and after tunnel excavation is 42%, which is located at the intersection of the newly built tunnel and the existing coal-mine. In the construction of adjacent tunnels, when the geological conditions in the intersection are poor, the double-side heading method is adopted, and the deformation of the surrounding rock caused by tunnel excavation is small, which proves that the construction method is reasonable.

参考文献/References:

[1] 贾宝新, 贾志波, 陈扬. 基于间距折减法浅埋小净距交叉隧道安全性分析[J]. 地下空间与工程学报, 2018, 14(2): 507-513.[2] 陈卫忠, 郑东, 于建新, 等. 交叉隧道施工对已有隧道稳定性影响研究[J]. 岩石力学与工程学报, 2015, 34(S1): 3097-3105.[3] 刘镇, 房明, 周翠英, 等. 交叉隧道施工中新建隧道周围复合地层与间距对既有隧道的沉降影响研究[J]. 工程地质学报, 2010, 18(5): 736-741.[4] 陈建刚. 上下交叉隧道近接施工对既有隧道的影响研究[D]. 广州: 华南理工大学, 2017.[5] 李磊, 张孟喜, 吴惠明, 等. 近距离多线叠交盾构施工对既有隧道变形的影响研究[J]. 岩土工程学报, 2014, 36(6): 1036-1043.[6] 孙玉永, 周顺华, 向科, 等. 近距离下穿既有隧道的盾构施工参数研究[J]. 中国铁道科学, 2010, 31(1): 54-58.[7] 申文明, 赖世华, 刘新科, 等. 新建地铁隧道上跨既有地铁隧道的影响分析[J]. 路基工程, 2018, 12(4): 217-221.[8] 张强. 开挖卸荷下既有地铁隧道的竖向变形及其控制研究[D]. 北京: 北京交通大学, 2012.[9] 臧万军, 王钊. 象山隧道拓宽改造工程方案研究[J]. 福建工程学院学报, 2016, 14(6): 526-531.[10] 王丽珊. 公路隧道施工对下方输水隧洞影响分析[J]. 福建交通科技, 2017(4): 150-152, 155.[11] 赵勇博, 吴波, 王鸣涛. 盾构隧道下穿铁路群引起路基沉降的数值研究[J]. 福建工程学院学报, 2016, 14(4): 339-343, 355.[12] 张鹏辉, 吴波, 杨思. 盾构隧道下穿引起铁路轨道沉降变形数值研究[J]. 福建工程学院学报, 2016, 14(4): 332-338.

更新日期/Last Update: 2019-08-25