Study on Lateral Deformation and Failure Characteristics of Coal Based on Different Confining Pressures
To study the lateral deformation characteristics of coal under different confining pressures, coal compression experiments with confining pressures of 0 MPa, 3 MPa, 5 MPa, and 7 MPa were conducted under the same loading rate by using the TAW-2000 electrohydraulic servo rock mechanics experimental ma...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/6388687 |
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| _version_ | 1832566278196297728 |
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| author | Jian-jun Ren Shan-Yang Wei Shi-Hai Shu Wei-Dong Luo |
| author_facet | Jian-jun Ren Shan-Yang Wei Shi-Hai Shu Wei-Dong Luo |
| author_sort | Jian-jun Ren |
| collection | DOAJ |
| description | To study the lateral deformation characteristics of coal under different confining pressures, coal compression experiments with confining pressures of 0 MPa, 3 MPa, 5 MPa, and 7 MPa were conducted under the same loading rate by using the TAW-2000 electrohydraulic servo rock mechanics experimental machine. The results of the study showed the following: at the initial stage of loading, the lateral strain of coal was about 12.22%–46.9% of the axial strain at the elastic deformation stage and 41.18%–64.96% of the axial strain at the inelastic deformation to peak stress stage. Compared with the experiment under 0 MPa confining pressure, the growth rate of the lateral strain of the coal under 3 MPa, 5 MPa, and 7 MPa confining pressures was much smaller than that of the corresponding axial strain. When the coal was damaged under different confining pressures, the lateral strain was maintained at about 0.6 × 10−2. Based on the field verification, we proposed that the lateral strain during the coal failure and the nonlinear region of the lateral axis ratio changing with time can be used as potential parameters for predicting the coal failure. |
| format | Article |
| id | doaj-art-5cb0837dcdce45bba5c2490289d62ebd |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-5cb0837dcdce45bba5c2490289d62ebd2025-02-03T01:04:34ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/63886876388687Study on Lateral Deformation and Failure Characteristics of Coal Based on Different Confining PressuresJian-jun Ren0Shan-Yang Wei1Shi-Hai Shu2Wei-Dong Luo3College of Physics and Engineering, Xingyi Normal University for Nationalities, Xingyi 562400, ChinaSchool of Mining, Guizhou University, Guiyang 550025, ChinaCollege of Physics and Engineering, Xingyi Normal University for Nationalities, Xingyi 562400, ChinaGuizhou Panjiang Coal Power and Electricity Group Technology Research Institute Co., Ltd., Guiyang 550081, ChinaTo study the lateral deformation characteristics of coal under different confining pressures, coal compression experiments with confining pressures of 0 MPa, 3 MPa, 5 MPa, and 7 MPa were conducted under the same loading rate by using the TAW-2000 electrohydraulic servo rock mechanics experimental machine. The results of the study showed the following: at the initial stage of loading, the lateral strain of coal was about 12.22%–46.9% of the axial strain at the elastic deformation stage and 41.18%–64.96% of the axial strain at the inelastic deformation to peak stress stage. Compared with the experiment under 0 MPa confining pressure, the growth rate of the lateral strain of the coal under 3 MPa, 5 MPa, and 7 MPa confining pressures was much smaller than that of the corresponding axial strain. When the coal was damaged under different confining pressures, the lateral strain was maintained at about 0.6 × 10−2. Based on the field verification, we proposed that the lateral strain during the coal failure and the nonlinear region of the lateral axis ratio changing with time can be used as potential parameters for predicting the coal failure.http://dx.doi.org/10.1155/2021/6388687 |
| spellingShingle | Jian-jun Ren Shan-Yang Wei Shi-Hai Shu Wei-Dong Luo Study on Lateral Deformation and Failure Characteristics of Coal Based on Different Confining Pressures Shock and Vibration |
| title | Study on Lateral Deformation and Failure Characteristics of Coal Based on Different Confining Pressures |
| title_full | Study on Lateral Deformation and Failure Characteristics of Coal Based on Different Confining Pressures |
| title_fullStr | Study on Lateral Deformation and Failure Characteristics of Coal Based on Different Confining Pressures |
| title_full_unstemmed | Study on Lateral Deformation and Failure Characteristics of Coal Based on Different Confining Pressures |
| title_short | Study on Lateral Deformation and Failure Characteristics of Coal Based on Different Confining Pressures |
| title_sort | study on lateral deformation and failure characteristics of coal based on different confining pressures |
| url | http://dx.doi.org/10.1155/2021/6388687 |
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