Study on Electrical Characteristics of Magmatic Rock Intrusions in Metamorphic Rock Formations—Taking the Mupi Tunnel of Jiuzhaigou-Mianyang Highway as an Example

Study on Electrical Characteristics of Magmatic Rock Intrusions in Metamorphic Rock Formations—Taking the Mupi Tunnel of Jiuzhaigou-Mianyang Highway as an Example | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Study on Electrical Characteristics of Magmatic Rock Intrusions in Metamorphic Rock Formations—Taking the Mupi Tunnel of Jiuzhaigou-Mianyang Highway as an Example Bin Li, Chongde Feng, Qiang Cheng, Jianhua Yu, Hu Zhao, Xuepei Xiao This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-384306/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract The stratum lithology and geological structure of the highway tunnel in the mountainous areas of western China are complex, and the engineering geological conditions are complicated. When the highway tunnel passes through different lithological strata, its structural design and construction are completely different. Therefore, the design and construction of the supporting tunnel are used in the tunnel survey. The identification of the contact boundary between magmatic rock and metamorphic rock and the grade of surrounding rock is very important. The data processing, forward numerical simulation, 1D, 2D, and 3D inversion of the G8513 Jiuzhaigou-Mianyang Expressway Mupi Tunnel survey by magnetotelluric method reveals the ground level along the design line of the tunnel to the depth of 50m depths within the design elevation of the tunnel. Electrical characteristics, focusing on the identification of the contact boundary between magmatic rock and metamorphic rock. This study provides the electrical characteristics of the magmatic rock and metamorphic rock contact boundary of the Mupi Tunnel. It is speculated that the boundary is revealed by the tunnel construction excavation, which verifies the correctness of the geophysical inversion model and provides a more detailed design basis for the tunnel design. It is believed that taking the Mupi tunnel survey as an example, this research can provide detailed geophysical basis for the identification of magmatic rock and metamorphic rock in highway tunnels, as well as the geological survey and design of highway tunnels. Scientific Communication Magnetics Materials and Devices Electrical Engineering highway tunnels magnetotelluric survey engineering geology Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-384306","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":19822950,"identity":"39a893a3-35db-4cf1-9126-0c7d7319c8a9","order_by":0,"name":"Bin Li","email":"","orcid":"","institution":"Chengdu University of Technology, State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Sichuan Chengdu","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Bin","middleName":"","lastName":"Li","suffix":""},{"id":19822951,"identity":"15a725b8-24d8-4062-80d0-cb2b089cf6c3","order_by":1,"name":"Chongde Feng","email":"","orcid":"","institution":"Sichuan Highway Planning, Survey, Design And Research Institute Ltd，Sichuan Chengdu","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Chongde","middleName":"","lastName":"Feng","suffix":""},{"id":19822952,"identity":"78abd28a-ebfd-480c-a400-9738f1a5ebb5","order_by":2,"name":"Qiang Cheng","email":"","orcid":"","institution":"Sichuan Highway Planning, Survey, Design And Research Institute Ltd，Sichuan Chengdu","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Qiang","middleName":"","lastName":"Cheng","suffix":""},{"id":19822953,"identity":"b81e26d3-8f40-42a7-94bc-5a6b948e5fc3","order_by":3,"name":"Jianhua Yu","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA0ElEQVRIiWNgGAWjYHCChAMMDEDE3sDAzMDGwEOCFp4DxGsBAaAWiQSwFsLA4EbCwwM/d9xJ7J/5/OHngrJ7Mgzsh49uIKAl4WDvmWeJM27nGEvPOFfMw8CTlnaDkJYDvG2HExtu57Ax87Yl8DBI8JgR1HLwL1DL/JvHnxGv5TDIlg03GMyI0yJ55kHCYdm2w8YbzwD9wnMugYeNkF/4juckf3zbdlh23vHjDz/zlCXY87MfPoZXi8IBngRUEYJRI9/AfoCQmlEwCkbBKBjpAAB6AFNMvw+GQgAAAABJRU5ErkJggg==","orcid":"","institution":"Sichuan Highway Planning, Survey, Design And Research Institute Ltd，Sichuan Chengdu","correspondingAuthor":true,"submittingAuthor":false,"prefix":"","firstName":"Jianhua","middleName":"","lastName":"Yu","suffix":""},{"id":19822954,"identity":"e69f6240-daab-4c95-bf80-6057bee0a94c","order_by":4,"name":"Hu Zhao","email":"","orcid":"","institution":"Sichuan Highway Planning, Survey, Design And Research Institute Ltd，Sichuan Chengdu","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Hu","middleName":"","lastName":"Zhao","suffix":""},{"id":19822955,"identity":"8a8b87e9-9807-42d1-89d5-fe266eff4118","order_by":5,"name":"Xuepei Xiao","email":"","orcid":"","institution":"Sichuan Highway Planning, Survey, Design And Research Institute Ltd，Sichuan Chengdu","correspondingAuthor":false,"submittingAuthor":false,"prefix":"","firstName":"Xuepei","middleName":"","lastName":"Xiao","suffix":""}],"badges":[],"createdAt":"2021-04-01 17:14:08","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-384306/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-384306/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":7724132,"identity":"54bb20fa-a04c-4e46-9b32-9c366e064d03","added_by":"auto","created_at":"2021-04-06 18:51:41","extension":"jpg","order_by":1,"title":"Figure 1","display":"","copyAsset":false,"role":"figure","size":368033,"visible":true,"origin":"","legend":"Location of the research area. (a) Location of the research area and geological survey. (b) Schematic diagram \nof Mupi tunnel design and Geophysical survey points. The map is based on Google satellite image, showing the location \n of the research area. The legend and other line in the map were created using AutoCAD version 2021\n(https://www.autodesk.com) and CorelDRAW version 2021 (https://www.coreldraw.com).\n\nNote: The designations employed and the presentation of the material on this map\ndo not imply the expression of any opinion whatsoever on the part of Research Square concerning\nthe legal status of any country, territory, city or area or of its authorities, \nor concerning the delimitation of its frontiers or boundaries. This map has been provided by the authors.","description":"","filename":"1.jpg","url":"https://assets-eu.researchsquare.com/files/rs-384306/v1/812b1fe746af0596ef185f6d.jpg"},{"id":7724130,"identity":"34296e62-04b7-4196-bfbb-bb4ef7b7079b","added_by":"auto","created_at":"2021-04-06 18:51:40","extension":"jpg","order_by":2,"title":"Figure 2","display":"","copyAsset":false,"role":"figure","size":854164,"visible":true,"origin":"","legend":"Topography and surface lithology photos of Mupi Tunnel. (a) Topographic photos of the entrance of the \nMupi tunnel. (b) Lithology photo of the stratum at the entrance of Mupi Tunnel. (c) Lithology photo of the surface of \n the middle section of the Mupi Tunnel. (d) Mupishaiziyan photo. The right corner of the photo (c) is the Mupishaiziyan, \n and the picture (d) is taken after magnifying several times.\n\nNote: The designations employed and the presentation of the material on this map\ndo not imply the expression of any opinion whatsoever on the part of Research Square concerning\nthe legal status of any country, territory, city or area or of its authorities, \nor concerning the delimitation of its frontiers or boundaries. This map has been provided by the authors.","description":"","filename":"2.jpg","url":"https://assets-eu.researchsquare.com/files/rs-384306/v1/501d9133fd60c9513dc9e861.jpg"},{"id":7723770,"identity":"ba7b680d-3961-4554-b2c5-9b60bcd86eb2","added_by":"auto","created_at":"2021-04-06 18:47:54","extension":"jpg","order_by":3,"title":"Figure 3","display":"","copyAsset":false,"role":"figure","size":1076980,"visible":true,"origin":"","legend":"Layout Plan of Magnetotelluric Survey Line for Mupi Tunnel. The measurement line is arranged along the \n measurement line of the left hole of the Mupi Tunnel, as shown in Fig. 1b, the distance between the measurement line 159 and the center line of the tunnel is 5.25 meters.","description":"","filename":"3.jpg","url":"https://assets-eu.researchsquare.com/files/rs-384306/v1/8ea7de84f8fa9c8377b01162.jpg"},{"id":7723766,"identity":"4c69a1ba-c403-4761-b6fb-bd7aae77ba83","added_by":"auto","created_at":"2021-04-06 18:47:54","extension":"jpg","order_by":4,"title":"Figure 4","display":"","copyAsset":false,"role":"figure","size":95458,"visible":true,"origin":"","legend":"Mathematical Model of Magnetotelluric Method for Highway Tunnel.","description":"","filename":"4.jpg","url":"https://assets-eu.researchsquare.com/files/rs-384306/v1/012beebc979c2b0fd6c5694d.jpg"},{"id":7723767,"identity":"f753177c-3e7b-4e1d-995b-8509a142e92a","added_by":"auto","created_at":"2021-04-06 18:47:54","extension":"jpg","order_by":5,"title":"Figure 5","display":"","copyAsset":false,"role":"figure","size":566782,"visible":true,"origin":"","legend":"MT data of Mupi tunnel (TE mode apparent resistivity, section 0.27-0.33km, point ZK124+850,880,910).","description":"","filename":"5.jpg","url":"https://assets-eu.researchsquare.com/files/rs-384306/v1/4239c47ac64a11f51457f2aa.jpg"},{"id":7724131,"identity":"3ac44eba-f478-46ac-9ec5-45021cbf4b75","added_by":"auto","created_at":"2021-04-06 18:51:41","extension":"jpg","order_by":6,"title":"Figure 6","display":"","copyAsset":false,"role":"figure","size":219180,"visible":true,"origin":"","legend":"1D inversion map of ZK124+670 measuring points of Mupi Tunnel.","description":"","filename":"6.jpg","url":"https://assets-eu.researchsquare.com/files/rs-384306/v1/941ed133494a3f5cc94b33c0.jpg"},{"id":7723772,"identity":"1907823d-b24c-4baa-8a51-7f76e23e1317","added_by":"auto","created_at":"2021-04-06 18:47:54","extension":"jpg","order_by":7,"title":"Figure 7","display":"","copyAsset":false,"role":"figure","size":678867,"visible":true,"origin":"","legend":"Mupi tunnel inversion map. (a) Occam inversion grid division (b) Occam inversion parameter selection (c) \n Occam inversion apparent resistivity contour map","description":"","filename":"7.jpg","url":"https://assets-eu.researchsquare.com/files/rs-384306/v1/8e117d4117fc84f1bd996a66.jpg"},{"id":7723774,"identity":"3528f18a-cdb6-4a81-9f8f-7855cfe4216a","added_by":"auto","created_at":"2021-04-06 18:47:55","extension":"jpg","order_by":8,"title":"Figure 8","display":"","copyAsset":false,"role":"figure","size":765888,"visible":true,"origin":"","legend":"Mupi Tunnel Electrical Geological Interpretation Section. (a) Preliminary electrical geological interpretation \n profile. (b) Comprehensive geological results, considering the occurrence of metamorphic rocks and magmatic rock \n intrusions, modified electrical geological interpretation section. ","description":"","filename":"8.jpg","url":"https://assets-eu.researchsquare.com/files/rs-384306/v1/23d64848d819aef4e29ba674.jpg"},{"id":7723773,"identity":"34aba5e3-538e-464b-b58f-8c6565a22fb2","added_by":"auto","created_at":"2021-04-06 18:47:54","extension":"jpg","order_by":9,"title":"Figure 9","display":"","copyAsset":false,"role":"figure","size":698887,"visible":true,"origin":"","legend":"Mupi tunnel construction photos. (a) Mupi left hole ZK125+234 surrounding rock photos. (b) ZK125+280 \ntunnel face surrounding rock photos. (c) ZK125+706-716 left side arch waist surrounding rock falling photos. (d)\n ZK125 +773 Photos of the left arch from the waist to the top of the vault.","description":"","filename":"9.jpg","url":"https://assets-eu.researchsquare.com/files/rs-384306/v1/257368bf0479f97ccc0e2aa8.jpg"},{"id":7723771,"identity":"c31cd9bb-a61c-4bda-ad88-8fcfb6bae547","added_by":"auto","created_at":"2021-04-06 18:47:54","extension":"jpg","order_by":10,"title":"Figure 10","display":"","copyAsset":false,"role":"figure","size":652633,"visible":true,"origin":"","legend":"Magnetotelluric Forward Numerical Simulation of Mupi Tunnel. (a) Different lithology models of the \n undulating terrain of the tunnel. (b) TE mode apparent resistivity profile. (c) TE mode impedance phase profile.\n\nNote: The designations employed and the presentation of the material on this map\ndo not imply the expression of any opinion whatsoever on the part of Research Square concerning\nthe legal status of any country, territory, city or area or of its authorities, \nor concerning the delimitation of its frontiers or boundaries. This map has been provided by the authors.","description":"","filename":"10.jpg","url":"https://assets-eu.researchsquare.com/files/rs-384306/v1/3e1fb309c17dbd13c41b1825.jpg"},{"id":7724134,"identity":"25b8440a-54d7-47ac-9758-62fb7f919cc1","added_by":"auto","created_at":"2021-04-06 18:51:41","extension":"png","order_by":11,"title":"Figure 11","display":"","copyAsset":false,"role":"figure","size":2837798,"visible":true,"origin":"","legend":"Three-dimensional inversion map of veneer tunnel. (a) N-E-plane-at-Depth 0 km. (b) N-E-plane-at-Depth 1 \n km. (c) N-E-plane-at-Depth 2 km. (d) N-E-plane-at-Depth 3 km. (e) N-E-plane-at-Depth 4 km. (f) N-E-plane-at-Depth \n 5 km. (g) N-E-plane-at-Depth 6 km. (h) N-E-plane-at-Depth 7 km.\n\nNote: The designations employed and the presentation of the material on this map\ndo not imply the expression of any opinion whatsoever on the part of Research Square concerning\nthe legal status of any country, territory, city or area or of its authorities, \nor concerning the delimitation of its frontiers or boundaries. This map has been provided by the authors.","description":"","filename":"11.png","url":"https://assets-eu.researchsquare.com/files/rs-384306/v1/1fadad106395d79f6f16cfd1.png"},{"id":13618197,"identity":"cb1ed59c-f6a5-48d5-b188-d19924606051","added_by":"auto","created_at":"2021-09-17 06:56:08","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":5341875,"visible":true,"origin":"","legend":"","description":"","filename":"Studyonelectricalcharacteristicsofmagmaticrockintrusionsinmetamorphicrockformations.pdf","url":"https://assets-eu.researchsquare.com/files/rs-384306/v1_covered.pdf"},{"id":9949415,"identity":"4f5a2f1c-4322-458f-acee-4974c29a14d8","added_by":"auto","created_at":"2021-06-03 17:14:39","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":5338405,"visible":true,"origin":"","legend":"","description":"","filename":"Studyonelectricalcharacteristicsofmagmaticrockintrusionsinmetamorphicrockformations.pdf","url":"https://assets-eu.researchsquare.com/files/rs-384306/v1_covered.pdf"},{"id":7724409,"identity":"18b545dd-2bf9-4b64-a9fc-1a826890222e","added_by":"auto","created_at":"2021-04-06 18:54:01","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":10997640,"visible":true,"origin":"","legend":"","description":"","filename":"Studyonelectricalcharacteristicsofmagmaticrockintrusionsinmetamorphicrockformations.pdf","url":"https://assets-eu.researchsquare.com/files/rs-384306/v1_stamped.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"\u003cp\u003eStudy on Electrical Characteristics of Magmatic Rock Intrusions in Metamorphic Rock Formations—Taking the Mupi Tunnel of Jiuzhaigou-Mianyang Highway as an Example\u003c/p\u003e","fulltext":[{"header":"Full Text","content":"This preprint is available for \u003ca href='/article/rs-384306/latest.pdf' target='_blank'\u003edownload as a PDF\u003c/a\u003e."}],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":false,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"highway, tunnels, magnetotelluric, survey, engineering geology","lastPublishedDoi":"10.21203/rs.3.rs-384306/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-384306/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"The stratum lithology and geological structure of the highway tunnel in the mountainous areas of western China are complex, and the engineering geological conditions are complicated. When the highway tunnel passes through different lithological strata, its structural design and construction are completely different. Therefore, the design and construction of the supporting tunnel are used in the tunnel survey. The identification of the contact boundary between magmatic rock and metamorphic rock and the grade of surrounding rock is very important. The data processing, forward numerical simulation, 1D, 2D, and 3D inversion of the G8513 Jiuzhaigou-Mianyang Expressway Mupi Tunnel survey by magnetotelluric method reveals the ground level along the design line of the tunnel to the depth of 50m depths within the design elevation of the tunnel. Electrical characteristics, focusing on the identification of the contact boundary between magmatic rock and metamorphic rock. This study provides the electrical characteristics of the magmatic rock and metamorphic rock contact boundary of the Mupi Tunnel. It is speculated that the boundary is revealed by the tunnel construction excavation, which verifies the correctness of the geophysical inversion model and provides a more detailed design basis for the tunnel design. It is believed that taking the Mupi tunnel survey as an example, this research can provide detailed geophysical basis for the identification of magmatic rock and metamorphic rock in highway tunnels, as well as the geological survey and design of highway tunnels.","manuscriptTitle":"Study on Electrical Characteristics of Magmatic Rock Intrusions in Metamorphic Rock Formations—Taking the Mupi Tunnel of Jiuzhaigou-Mianyang Highway as an Example","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2021-04-06 18:47:52","doi":"10.21203/rs.3.rs-384306/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"d22e83f8-9071-43db-a58e-c19982c58a03","owner":[],"postedDate":"April 6th, 2021","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":3432538,"name":"Scientific Communication"},{"id":3432539,"name":"Magnetics Materials and Devices"},{"id":3432540,"name":"Electrical Engineering"}],"tags":[],"updatedAt":"2021-06-03T17:14:10+00:00","versionOfRecord":[],"versionCreatedAt":"2021-04-06 18:47:52","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-384306","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-384306","identity":"rs-384306","version":["v1"]},"buildId":"7rjqhiLT3MXkJMwkYKINL","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}