“Relief-Retaining” Control Technology of Floor Heave in Mining Roadway with Soft Rock: A Case Study
The floor heave problem is one of the important factors affecting the stability and safety of surrounding rocks of roadways, especially in deep high-stress mining roadway with soft rock. The return airway of no. 130203 working face in Zaoquan Coal Mine of Ningdong Mining Area in Northwest China is t...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/1455052 |
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| author | Ai Chen Xuebin Li Xuesheng Liu Yunliang Tan Ke Xu Honglei Wang |
| author_facet | Ai Chen Xuebin Li Xuesheng Liu Yunliang Tan Ke Xu Honglei Wang |
| author_sort | Ai Chen |
| collection | DOAJ |
| description | The floor heave problem is one of the important factors affecting the stability and safety of surrounding rocks of roadways, especially in deep high-stress mining roadway with soft rock. The return airway of no. 130203 working face in Zaoquan Coal Mine of Ningdong Mining Area in Northwest China is the research object in this study. Firstly, an innovative “relief-retaining” control scheme of floor heave is proposed, which is the comprehensive measure of “cutting groove in floor + drilling for pressure relief at roadway side + setting retaining piles at the junction of roadway side and floor.” Then, the specific parameters suitable for floor heave control of no. 130203 return airway are determined using numerical simulation method. Finally, the yield monitoring results show that both the deformation of surrounding rocks and the cable force are significantly reduced. The roof falling capacity, floor heave displacement, and thickness increasing value of 0–2 m floor strata are 596 mm, 410 mm, and 82 mm, respectively, which are 43.67%, 67.49%, and 75.38% less than those of the control section. The maximum force of cables at roadway sides is 140.13 kN, about 32.54% less than that of the control section. The results verify the reliability of the proposed “relief-retaining” control scheme and can provide some reference for the floor heave control of similar roadways. |
| format | Article |
| id | doaj-art-a935adcbba3a4a608df1673642ac5350 |
| institution | Kabale University |
| issn | 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-a935adcbba3a4a608df1673642ac53502025-02-03T05:53:26ZengWileyAdvances in Civil Engineering1687-80942021-01-01202110.1155/2021/1455052“Relief-Retaining” Control Technology of Floor Heave in Mining Roadway with Soft Rock: A Case StudyAi Chen0Xuebin Li1Xuesheng Liu2Yunliang Tan3Ke Xu4Honglei Wang5School of Energy and Mining EngineeringSchool of Energy and Mining EngineeringSchool of Energy and Mining EngineeringSchool of Energy and Mining EngineeringSchool of Energy and Mining EngineeringSchool of Energy and Mining EngineeringThe floor heave problem is one of the important factors affecting the stability and safety of surrounding rocks of roadways, especially in deep high-stress mining roadway with soft rock. The return airway of no. 130203 working face in Zaoquan Coal Mine of Ningdong Mining Area in Northwest China is the research object in this study. Firstly, an innovative “relief-retaining” control scheme of floor heave is proposed, which is the comprehensive measure of “cutting groove in floor + drilling for pressure relief at roadway side + setting retaining piles at the junction of roadway side and floor.” Then, the specific parameters suitable for floor heave control of no. 130203 return airway are determined using numerical simulation method. Finally, the yield monitoring results show that both the deformation of surrounding rocks and the cable force are significantly reduced. The roof falling capacity, floor heave displacement, and thickness increasing value of 0–2 m floor strata are 596 mm, 410 mm, and 82 mm, respectively, which are 43.67%, 67.49%, and 75.38% less than those of the control section. The maximum force of cables at roadway sides is 140.13 kN, about 32.54% less than that of the control section. The results verify the reliability of the proposed “relief-retaining” control scheme and can provide some reference for the floor heave control of similar roadways.http://dx.doi.org/10.1155/2021/1455052 |
| spellingShingle | Ai Chen Xuebin Li Xuesheng Liu Yunliang Tan Ke Xu Honglei Wang “Relief-Retaining” Control Technology of Floor Heave in Mining Roadway with Soft Rock: A Case Study Advances in Civil Engineering |
| title | “Relief-Retaining” Control Technology of Floor Heave in Mining Roadway with Soft Rock: A Case Study |
| title_full | “Relief-Retaining” Control Technology of Floor Heave in Mining Roadway with Soft Rock: A Case Study |
| title_fullStr | “Relief-Retaining” Control Technology of Floor Heave in Mining Roadway with Soft Rock: A Case Study |
| title_full_unstemmed | “Relief-Retaining” Control Technology of Floor Heave in Mining Roadway with Soft Rock: A Case Study |
| title_short | “Relief-Retaining” Control Technology of Floor Heave in Mining Roadway with Soft Rock: A Case Study |
| title_sort | relief retaining control technology of floor heave in mining roadway with soft rock a case study |
| url | http://dx.doi.org/10.1155/2021/1455052 |
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