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Study on Deformation Law of Crossing Layer Drilling Superimposed Floor Roadway.

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Title: Study on Deformation Law of Crossing Layer Drilling Superimposed Floor Roadway.
Authors: Liu, Xiao1,2 (AUTHOR) liuxiao@hpu.edu.cn, Li, Bo1 (AUTHOR), Xie, Jiawei1 (AUTHOR), Ni, Xiaoming1,2 (AUTHOR), Wei, Shaoren1 (AUTHOR), Yang, Chengtao3 (AUTHOR), Zhang, Yubo1 (AUTHOR), Lin, Haixiao1 (AUTHOR), Zhao, Wei4 (AUTHOR), Wang, Tao4 (AUTHOR)
Source: Energy Science & Engineering. Jun2026, Vol. 14 Issue 6, p2752-2771. 20p.
Subject Terms: *Deformations (Mechanics), *Materials compression testing, *Geotechnical engineering, *Roads, *Coalbed methane, *Gases
Abstract: Floor extraction roadway crossing layer drilling is a pivotal strategy for gas control in areas prone to coal and gas outbursts. However, this method often fails due to overburden pressure and mining stress, causing floor deformation and drilling blockage. To solve the problem for extracting gas of crossing coal layer drilling in the floor roadway, uniaxial compression tests on perforated specimens was carried out. And the plastic zone failure of crossing layer drilling was analyzed through numerical simulations in FLAC3D with customized command flow. The study finds that drilling angle, drilling section, and coal‐rock interface most affect borehole deformation. Hole sections show decreasing compressive strength: borehole mouth > borehole body > borehole bottom. The present investigation reveals that low dip angle drilling is particularly susceptible to complications such as borehole blockage and collapse. It is recommended to implement protective measures for low dip angle drilling. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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Header DbId: enr
DbLabel: Energy & Power Source
An: 194418743
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Study on Deformation Law of Crossing Layer Drilling Superimposed Floor Roadway.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Liu%2C+Xiao%22">Liu, Xiao</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> liuxiao@hpu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Bo%22">Li, Bo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xie%2C+Jiawei%22">Xie, Jiawei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ni%2C+Xiaoming%22">Ni, Xiaoming</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wei%2C+Shaoren%22">Wei, Shaoren</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Chengtao%22">Yang, Chengtao</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Yubo%22">Zhang, Yubo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lin%2C+Haixiao%22">Lin, Haixiao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Wei%22">Zhao, Wei</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Tao%22">Wang, Tao</searchLink><relatesTo>4</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
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  Data: <searchLink fieldCode="JN" term="%22Energy+Science+%26+Engineering%22">Energy Science & Engineering</searchLink>. Jun2026, Vol. 14 Issue 6, p2752-2771. 20p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Deformations+%28Mechanics%29%22">Deformations (Mechanics)</searchLink><br />*<searchLink fieldCode="DE" term="%22Materials+compression+testing%22">Materials compression testing</searchLink><br />*<searchLink fieldCode="DE" term="%22Geotechnical+engineering%22">Geotechnical engineering</searchLink><br />*<searchLink fieldCode="DE" term="%22Roads%22">Roads</searchLink><br />*<searchLink fieldCode="DE" term="%22Coalbed+methane%22">Coalbed methane</searchLink><br />*<searchLink fieldCode="DE" term="%22Gases%22">Gases</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Floor extraction roadway crossing layer drilling is a pivotal strategy for gas control in areas prone to coal and gas outbursts. However, this method often fails due to overburden pressure and mining stress, causing floor deformation and drilling blockage. To solve the problem for extracting gas of crossing coal layer drilling in the floor roadway, uniaxial compression tests on perforated specimens was carried out. And the plastic zone failure of crossing layer drilling was analyzed through numerical simulations in FLAC3D with customized command flow. The study finds that drilling angle, drilling section, and coal‐rock interface most affect borehole deformation. Hole sections show decreasing compressive strength: borehole mouth > borehole body > borehole bottom. The present investigation reveals that low dip angle drilling is particularly susceptible to complications such as borehole blockage and collapse. It is recommended to implement protective measures for low dip angle drilling. [ABSTRACT FROM AUTHOR]
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/ese3.70504
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 20
        StartPage: 2752
    Subjects:
      – SubjectFull: Deformations (Mechanics)
        Type: general
      – SubjectFull: Materials compression testing
        Type: general
      – SubjectFull: Geotechnical engineering
        Type: general
      – SubjectFull: Roads
        Type: general
      – SubjectFull: Coalbed methane
        Type: general
      – SubjectFull: Gases
        Type: general
    Titles:
      – TitleFull: Study on Deformation Law of Crossing Layer Drilling Superimposed Floor Roadway.
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          Name:
            NameFull: Liu, Xiao
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            NameFull: Li, Bo
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            NameFull: Xie, Jiawei
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            NameFull: Ni, Xiaoming
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            NameFull: Wei, Shaoren
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            NameFull: Yang, Chengtao
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            NameFull: Zhang, Yubo
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            NameFull: Lin, Haixiao
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            NameFull: Zhao, Wei
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          Dates:
            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 20500505
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            – Type: volume
              Value: 14
            – Type: issue
              Value: 6
          Titles:
            – TitleFull: Energy Science & Engineering
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