Experimental Study on Mechanical Property of Cemented Backfill in Coal Mine.
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| Title: | Experimental Study on Mechanical Property of Cemented Backfill in Coal Mine. |
|---|---|
| Authors: | Yang, Haigang1,2 (AUTHOR) haigangy@163.com, Wang, Rui1,2 (AUTHOR), Zhang, Qiang3 (AUTHOR), Ma, Wencheng4 (AUTHOR), Wang, Yukai5 (AUTHOR) |
| Source: | Materials (1996-1944). Sep2025, Vol. 18 Issue 18, p4423. 15p. |
| Subjects: | Shear strength, Homogeneity, Coal mining, Controlled low-strength materials (Cement), Filler materials, Mechanical behavior of materials, Slurry |
| Abstract: | In response to the insufficiency of shear strength and severe segregation of cemented backfilling material in coal mines, a shear strength test, static segregation index test, and homogeneity degree test were carried out, taking slurry concentration (SC) as the main control factor. The effect law of SC on shear strength, the static segregation index, and the homogeneity degree was discussed. The relationship between the static segregation index and homogeneity degree and shear strength was analyzed, and the action mechanism of SC on shear strength was revealed. The research results show that for cemented backfill in coal mines, with a suspending agent content of 0 and a curing age of 28 d, when SC increases from 77% to 80%, shear strength increases by 31.43%, the static segregation index of the backfilling slurry decreases by 40.29%, and the homogeneity degree of the backfill increases by 69.23%. The increase in SC can enhance shear strength, reduce the segregation degree of backfilling slurry, and improve the homogeneity of backfill. The reason for the increase in shear strength lies in the fact that SC reduces the segregation degree of the backfilling slurry. The research in this paper has certain guiding significance for the timely support of the surrounding rock in the working face and the effective control of surface settlement. [ABSTRACT FROM AUTHOR] |
| Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 188281975 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Experimental Study on Mechanical Property of Cemented Backfill in Coal Mine. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Yang%2C+Haigang%22">Yang, Haigang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> haigangy@163.com</i><br /><searchLink fieldCode="AR" term="%22Wang%2C+Rui%22">Wang, Rui</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Qiang%22">Zhang, Qiang</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ma%2C+Wencheng%22">Ma, Wencheng</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Yukai%22">Wang, Yukai</searchLink><relatesTo>5</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Sep2025, Vol. 18 Issue 18, p4423. 15p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Shear+strength%22">Shear strength</searchLink><br /><searchLink fieldCode="DE" term="%22Homogeneity%22">Homogeneity</searchLink><br /><searchLink fieldCode="DE" term="%22Coal+mining%22">Coal mining</searchLink><br /><searchLink fieldCode="DE" term="%22Controlled+low-strength+materials+%28Cement%29%22">Controlled low-strength materials (Cement)</searchLink><br /><searchLink fieldCode="DE" term="%22Filler+materials%22">Filler materials</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Slurry%22">Slurry</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In response to the insufficiency of shear strength and severe segregation of cemented backfilling material in coal mines, a shear strength test, static segregation index test, and homogeneity degree test were carried out, taking slurry concentration (SC) as the main control factor. The effect law of SC on shear strength, the static segregation index, and the homogeneity degree was discussed. The relationship between the static segregation index and homogeneity degree and shear strength was analyzed, and the action mechanism of SC on shear strength was revealed. The research results show that for cemented backfill in coal mines, with a suspending agent content of 0 and a curing age of 28 d, when SC increases from 77% to 80%, shear strength increases by 31.43%, the static segregation index of the backfilling slurry decreases by 40.29%, and the homogeneity degree of the backfill increases by 69.23%. The increase in SC can enhance shear strength, reduce the segregation degree of backfilling slurry, and improve the homogeneity of backfill. The reason for the increase in shear strength lies in the fact that SC reduces the segregation degree of the backfilling slurry. The research in this paper has certain guiding significance for the timely support of the surrounding rock in the working face and the effective control of surface settlement. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=188281975 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/ma18184423 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 15 StartPage: 4423 Subjects: – SubjectFull: Shear strength Type: general – SubjectFull: Homogeneity Type: general – SubjectFull: Coal mining Type: general – SubjectFull: Controlled low-strength materials (Cement) Type: general – SubjectFull: Filler materials Type: general – SubjectFull: Mechanical behavior of materials Type: general – SubjectFull: Slurry Type: general Titles: – TitleFull: Experimental Study on Mechanical Property of Cemented Backfill in Coal Mine. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yang, Haigang – PersonEntity: Name: NameFull: Wang, Rui – PersonEntity: Name: NameFull: Zhang, Qiang – PersonEntity: Name: NameFull: Ma, Wencheng – PersonEntity: Name: NameFull: Wang, Yukai IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 09 Text: Sep2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 19961944 Numbering: – Type: volume Value: 18 – Type: issue Value: 18 Titles: – TitleFull: Materials (1996-1944) Type: main |
| ResultId | 1 |
