Study on the Key Factors of Terminal Mining Line Layout in Repeated Mining of Close-Distance Thick Coal Seams
In order to mater the reasonable layout basis of the terminal mining line position in the repeated mining of close-distance thick coal seams, taking Yan mine as the engineering background, we conducted theoretical analyses, numerical simulations, and field measurements to study the action mechanism...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-01-01
|
| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2022/9724275 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850174219980111872 |
|---|---|
| author | Fulian He Bingquan Liu Liang Li Xuhui Xu Kai Lv Wenli Zhai Jiayu Song Deqiu Wang |
| author_facet | Fulian He Bingquan Liu Liang Li Xuhui Xu Kai Lv Wenli Zhai Jiayu Song Deqiu Wang |
| author_sort | Fulian He |
| collection | DOAJ |
| description | In order to mater the reasonable layout basis of the terminal mining line position in the repeated mining of close-distance thick coal seams, taking Yan mine as the engineering background, we conducted theoretical analyses, numerical simulations, and field measurements to study the action mechanism of the stress arch. The results show that (1) with repeated mining, the shape of the left and right half arches of the stress arch changes in the order of time and space until it is stable; (2) the shape of the stress arch is highly related to the distribution of abutment pressure in the working face. If the shape is unchanged, the distribution of abutment pressure is unchanged; (3) in the final mining stage of repeated mining, when the shape of the right half arch is stable, the difference stagger distance of the terminal mining line has little effect on the distribution of abutment pressure of the working face where the front arch foot is located; (4) when the internal stagger distance between 3216 working face and terminal mining line of 4216 working face is greater than 22 m or the external stagger distance is greater than 30 m, 3216 working face is located in a relatively safe position. This study clarifies the key factors for the layout of terminal mining lines in close-distance thick coal seams, which can provide a scientific basis for similar projects. |
| format | Article |
| id | doaj-art-c97dc526b09249d3925bdfc0074d5c13 |
| institution | OA Journals |
| issn | 1687-8442 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-c97dc526b09249d3925bdfc0074d5c132025-08-20T02:19:42ZengWileyAdvances in Materials Science and Engineering1687-84422022-01-01202210.1155/2022/9724275Study on the Key Factors of Terminal Mining Line Layout in Repeated Mining of Close-Distance Thick Coal SeamsFulian He0Bingquan Liu1Liang Li2Xuhui Xu3Kai Lv4Wenli Zhai5Jiayu Song6Deqiu Wang7School 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 EngineeringSchool of Energy and Mining EngineeringSchool of Energy and Mining EngineeringIn order to mater the reasonable layout basis of the terminal mining line position in the repeated mining of close-distance thick coal seams, taking Yan mine as the engineering background, we conducted theoretical analyses, numerical simulations, and field measurements to study the action mechanism of the stress arch. The results show that (1) with repeated mining, the shape of the left and right half arches of the stress arch changes in the order of time and space until it is stable; (2) the shape of the stress arch is highly related to the distribution of abutment pressure in the working face. If the shape is unchanged, the distribution of abutment pressure is unchanged; (3) in the final mining stage of repeated mining, when the shape of the right half arch is stable, the difference stagger distance of the terminal mining line has little effect on the distribution of abutment pressure of the working face where the front arch foot is located; (4) when the internal stagger distance between 3216 working face and terminal mining line of 4216 working face is greater than 22 m or the external stagger distance is greater than 30 m, 3216 working face is located in a relatively safe position. This study clarifies the key factors for the layout of terminal mining lines in close-distance thick coal seams, which can provide a scientific basis for similar projects.http://dx.doi.org/10.1155/2022/9724275 |
| spellingShingle | Fulian He Bingquan Liu Liang Li Xuhui Xu Kai Lv Wenli Zhai Jiayu Song Deqiu Wang Study on the Key Factors of Terminal Mining Line Layout in Repeated Mining of Close-Distance Thick Coal Seams Advances in Materials Science and Engineering |
| title | Study on the Key Factors of Terminal Mining Line Layout in Repeated Mining of Close-Distance Thick Coal Seams |
| title_full | Study on the Key Factors of Terminal Mining Line Layout in Repeated Mining of Close-Distance Thick Coal Seams |
| title_fullStr | Study on the Key Factors of Terminal Mining Line Layout in Repeated Mining of Close-Distance Thick Coal Seams |
| title_full_unstemmed | Study on the Key Factors of Terminal Mining Line Layout in Repeated Mining of Close-Distance Thick Coal Seams |
| title_short | Study on the Key Factors of Terminal Mining Line Layout in Repeated Mining of Close-Distance Thick Coal Seams |
| title_sort | study on the key factors of terminal mining line layout in repeated mining of close distance thick coal seams |
| url | http://dx.doi.org/10.1155/2022/9724275 |
| work_keys_str_mv | AT fulianhe studyonthekeyfactorsofterminalmininglinelayoutinrepeatedminingofclosedistancethickcoalseams AT bingquanliu studyonthekeyfactorsofterminalmininglinelayoutinrepeatedminingofclosedistancethickcoalseams AT liangli studyonthekeyfactorsofterminalmininglinelayoutinrepeatedminingofclosedistancethickcoalseams AT xuhuixu studyonthekeyfactorsofterminalmininglinelayoutinrepeatedminingofclosedistancethickcoalseams AT kailv studyonthekeyfactorsofterminalmininglinelayoutinrepeatedminingofclosedistancethickcoalseams AT wenlizhai studyonthekeyfactorsofterminalmininglinelayoutinrepeatedminingofclosedistancethickcoalseams AT jiayusong studyonthekeyfactorsofterminalmininglinelayoutinrepeatedminingofclosedistancethickcoalseams AT deqiuwang studyonthekeyfactorsofterminalmininglinelayoutinrepeatedminingofclosedistancethickcoalseams |