Article(id=1222940993578590993, tenantId=1146029695717560320, journalId=1205116964453384197, issueId=1222940980886626474, articleNumber=null, orderNo=null, doi=10.20040/j.cnki.1000-7709.2023.20222601, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1671206400000, receivedDateStr=2022-12-17, revisedDate=1676995200000, revisedDateStr=2023-02-22, acceptedDate=null, acceptedDateStr=null, onlineDate=1769501454014, onlineDateStr=2026-01-27, pubDate=1700841600000, pubDateStr=2023-11-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769501454014, onlineIssueDateStr=2026-01-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769501454014, creator=13041195026, updateTime=1769501454014, updator=13041195026, issue=Issue{id=1222940980886626474, tenantId=1146029695717560320, journalId=1205116964453384197, year='2023', volume='41', issue='11', pageStart='1', pageEnd='226', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769501450987, creator=13041195026, updateTime=1769501450987, updator=13041195026, preIssue=null, nextIssue=null, ext=null, issueFiles=null}, startPage=133, endPage=137, ext={EN=ArticleExt(id=1222940993901552420, articleId=1222940993578590993, tenantId=1146029695717560320, journalId=1205116964453384197, language=EN, title=Large Deformation Mechanism and Treatment Measures of Shallow Buried Unsymmetrical Tunnel Portal Section with Silty Mudstone, columnId=1222925283779400191, journalTitle=Water Resources and Power, columnName=WATER CONSERVANCY AND HYDROPOWER ENGINEERING, runingTitle=null, highlight=null, articleAbstract=

In view of the local large deformation, collapse and erosion of silty mudstone entrance section of Daliangshan Highway #2 tunnel, through the field monitoring, indoor swelling test of surrounding rock and 3D modeling analysis, the mechanism of large deformation of initial support was studied. The impact of factors including rainwater, secondary deformation of surrounding rock and silt bias on the large deformation was discussed. The remediation plan was put forward. The results show that the surface clay rock above the tunnel is swelling rock, and the silty mudstone is non-expansive rock, and the tunnel deformation has little affected by the expansion of the surrounding rock. Affected by continuous rainfall, the change in the settlement of the vault is the most obvious, and the settlement increased by 150 mm compared with the pre-rainfall. The theoretical value of horizontal pressure on the deep buried side of the tunnel is 1.73 times that of the shallow side, and the tunnel structure is subjected to obvious bias load. The comprehensive treatment scheme of strengthening temporary support + advanced support of large pipe shed + grouting reinforcement of double-layer small conduit + addition of anti-slip piles at the junction of light and dark at the top of the cave + two rows of pipe piles on the left side of the left hole and two rows of pipe piles in the middle of the left and right holes of the hole section of the hole was adopted, and the deformation of the tunnel was reduced by 87%, and the large deformation of the initial support is effectively controlled.

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针对大凉山#2公路隧道粉砂质泥岩洞口段出现的局部大变形、坍塌、侵限等问题,通过现场监测、室内围岩膨胀性试验、三维数值模拟和理论分析,研究了初期支护大变形机理,探讨了雨水、围岩二次变形、洞口偏压等因素对大变形的影响规律,提出并采用洞外与洞内加固整治方案。结果表明,隧道上方地表粘土岩属于膨胀岩,粉砂质泥岩为非膨胀岩,隧道变形受围岩膨胀作用有限;受持续降雨影响,拱顶沉降量变化最为明显,沉降量相比降雨前增加150 mm;隧道深埋侧水平压力理论值为浅埋侧水平压力1.73倍,隧道结构承受明显偏压荷载;采用加强临时支护+大管棚超前支护+双层小导管注浆加固+洞顶明暗交界处增加抗滑桩+洞口段左洞左侧和左右洞中间各增加两排管桩的综合治理方案,隧道变形量减小87%,初支大变形得到有效控制。

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梁斌(1963-),男,教授、博导,研究方向为道路工程,E-mail:
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苗景川(1989-),男,工程师,研究方向为隧道工程,E-mail:

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苗景川(1989-),男,工程师,研究方向为隧道工程,E-mail:

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粉砂质泥岩浅埋偏压隧道洞口段大变形机理及治理措施
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苗景川 1, 2 , 陈诺 2 , 郑文飞 1 , 李文杰 2 , 梁斌 2
水电能源科学 | 水利水电工程 2023,41(11): 133-137
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水电能源科学 | 水利水电工程 2023, 41(11): 133-137
粉砂质泥岩浅埋偏压隧道洞口段大变形机理及治理措施
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苗景川1, 2 , 陈诺2, 郑文飞1, 李文杰2, 梁斌2
作者信息
  • 1.中铁十五局集团第一工程有限公司,陕西 西安 710018
  • 2.河南科技大学土木建筑学院,河南 洛阳 471000
  • 苗景川(1989-),男,工程师,研究方向为隧道工程,E-mail:

通讯作者:

梁斌(1963-),男,教授、博导,研究方向为道路工程,E-mail:
Large Deformation Mechanism and Treatment Measures of Shallow Buried Unsymmetrical Tunnel Portal Section with Silty Mudstone
Jing-chuan MIAO1, 2 , Nuo CHEN2, Wen-fei ZHENG1, Wen-jie LI2, Bin LIANG2
Affiliations
  • 1.The 1st Construction Co., Ltd. of China Railway Construction 15th Group, Xi’an 710018, China
  • 2.School of Civil Engineering and Architecture, Henan University of Science and Technology, Luoyang 471000, China
出版时间: 2023-11-25 doi: 10.20040/j.cnki.1000-7709.2023.20222601
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针对大凉山#2公路隧道粉砂质泥岩洞口段出现的局部大变形、坍塌、侵限等问题,通过现场监测、室内围岩膨胀性试验、三维数值模拟和理论分析,研究了初期支护大变形机理,探讨了雨水、围岩二次变形、洞口偏压等因素对大变形的影响规律,提出并采用洞外与洞内加固整治方案。结果表明,隧道上方地表粘土岩属于膨胀岩,粉砂质泥岩为非膨胀岩,隧道变形受围岩膨胀作用有限;受持续降雨影响,拱顶沉降量变化最为明显,沉降量相比降雨前增加150 mm;隧道深埋侧水平压力理论值为浅埋侧水平压力1.73倍,隧道结构承受明显偏压荷载;采用加强临时支护+大管棚超前支护+双层小导管注浆加固+洞顶明暗交界处增加抗滑桩+洞口段左洞左侧和左右洞中间各增加两排管桩的综合治理方案,隧道变形量减小87%,初支大变形得到有效控制。

降雨入渗  /  粉砂质泥岩  /  浅埋偏压隧道  /  大变形机理  /  室内试验  /  数值模拟

In view of the local large deformation, collapse and erosion of silty mudstone entrance section of Daliangshan Highway #2 tunnel, through the field monitoring, indoor swelling test of surrounding rock and 3D modeling analysis, the mechanism of large deformation of initial support was studied. The impact of factors including rainwater, secondary deformation of surrounding rock and silt bias on the large deformation was discussed. The remediation plan was put forward. The results show that the surface clay rock above the tunnel is swelling rock, and the silty mudstone is non-expansive rock, and the tunnel deformation has little affected by the expansion of the surrounding rock. Affected by continuous rainfall, the change in the settlement of the vault is the most obvious, and the settlement increased by 150 mm compared with the pre-rainfall. The theoretical value of horizontal pressure on the deep buried side of the tunnel is 1.73 times that of the shallow side, and the tunnel structure is subjected to obvious bias load. The comprehensive treatment scheme of strengthening temporary support + advanced support of large pipe shed + grouting reinforcement of double-layer small conduit + addition of anti-slip piles at the junction of light and dark at the top of the cave + two rows of pipe piles on the left side of the left hole and two rows of pipe piles in the middle of the left and right holes of the hole section of the hole was adopted, and the deformation of the tunnel was reduced by 87%, and the large deformation of the initial support is effectively controlled.

rainfall infiltration  /  silty mudstone  /  shallow buried biased tunnel  /  large deformation mechanism  /  laboratory test  /  numerical simulation
苗景川, 陈诺, 郑文飞, 李文杰, 梁斌. 粉砂质泥岩浅埋偏压隧道洞口段大变形机理及治理措施. 水电能源科学, 2023 , 41 (11) : 133 -137 . DOI: 10.20040/j.cnki.1000-7709.2023.20222601
Jing-chuan MIAO, Nuo CHEN, Wen-fei ZHENG, Wen-jie LI, Bin LIANG. Large Deformation Mechanism and Treatment Measures of Shallow Buried Unsymmetrical Tunnel Portal Section with Silty Mudstone[J]. Water Resources and Power, 2023 , 41 (11) : 133 -137 . DOI: 10.20040/j.cnki.1000-7709.2023.20222601
2023年第41卷第11期
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doi: 10.20040/j.cnki.1000-7709.2023.20222601
  • 接收时间:2022-12-17
  • 首发时间:2026-01-27
  • 出版时间:2023-11-25
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  • 收稿日期:2022-12-17
  • 修回日期:2023-02-22
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    1.中铁十五局集团第一工程有限公司,陕西 西安 710018
    2.河南科技大学土木建筑学院,河南 洛阳 471000

通讯作者:

梁斌(1963-),男,教授、博导,研究方向为道路工程,E-mail:
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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