Novel reverse-circulated excavating-drilling fluidized mining technique for steep-inclined coal seam
The steep-inclined coal seams are widely distributed in western and southern China.These coal seams are complex and difficult for fully-mechanized coal mining.Therefore, developing a novel fluidized and intelligent mining method to recovery the steep-inclined coal seam is of great significance to en...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Emergency Management Press
2021-06-01
|
| Series: | 矿业科学学报 |
| Subjects: | |
| Online Access: | http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2021.03.006 |
| _version_ | 1811335768502697984 |
|---|---|
| author | Zhang Hongwei Cheng Jingyi Zhao Yinxin Li Yang Wan Zhijun Wang Chunyao |
| author_facet | Zhang Hongwei Cheng Jingyi Zhao Yinxin Li Yang Wan Zhijun Wang Chunyao |
| author_sort | Zhang Hongwei |
| collection | DOAJ |
| description | The steep-inclined coal seams are widely distributed in western and southern China.These coal seams are complex and difficult for fully-mechanized coal mining.Therefore, developing a novel fluidized and intelligent mining method to recovery the steep-inclined coal seam is of great significance to ensure the safety production of coal.This paper proposed a reverse-circulated excavating-drilling method.A novel fluidized reverse-circulated mining machine was designed and the composition and utilization of this machine were introduced.Afterwards, the parallel excavating and drilling method of this machine is proposed.Finally, the coal mining efficiency, recovery rate and high-pressure water jet assisted coal cutting of this method were calculated.Results show that a larger diameter of cutting head always implies a greater coal mining efficiency.It is necessary to select a suitable diameter and overlap length of the cutter head according to the geological conditions and the target recovery rate of coal seam.It is found that the annual coal production linearly increased with the increasing cutter head advancing speed.Furthermore, a suitable drilling speed parameter and the utilization of the high-pressure water jet are both important to the increase of coal production. |
| first_indexed | 2024-04-13T17:29:56Z |
| format | Article |
| id | doaj.art-cb490df1f1dd45b8b5fb2d04932f3934 |
| institution | Directory Open Access Journal |
| issn | 2096-2193 |
| language | English |
| last_indexed | 2024-04-13T17:29:56Z |
| publishDate | 2021-06-01 |
| publisher | Emergency Management Press |
| record_format | Article |
| series | 矿业科学学报 |
| spelling | doaj.art-cb490df1f1dd45b8b5fb2d04932f39342022-12-22T02:37:37ZengEmergency Management Press矿业科学学报2096-21932021-06-016329630410.19606/j.cnki.jmst.2021.03.00620210306Novel reverse-circulated excavating-drilling fluidized mining technique for steep-inclined coal seamZhang Hongwei0Cheng Jingyi1Zhao Yinxin2Li Yang3Wan Zhijun4Wang Chunyao5Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology-Beijing, Beijing 100083, ChinaKey Laboratory of Deep Coal Resource Mining, China University of Mining and Technology, Jiangsu Xuzhou 221116, ChinaBeijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology-Beijing, Beijing 100083, ChinaSchool of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaKey Laboratory of Deep Coal Resource Mining, China University of Mining and Technology, Jiangsu Xuzhou 221116, ChinaSchool of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, ChinaThe steep-inclined coal seams are widely distributed in western and southern China.These coal seams are complex and difficult for fully-mechanized coal mining.Therefore, developing a novel fluidized and intelligent mining method to recovery the steep-inclined coal seam is of great significance to ensure the safety production of coal.This paper proposed a reverse-circulated excavating-drilling method.A novel fluidized reverse-circulated mining machine was designed and the composition and utilization of this machine were introduced.Afterwards, the parallel excavating and drilling method of this machine is proposed.Finally, the coal mining efficiency, recovery rate and high-pressure water jet assisted coal cutting of this method were calculated.Results show that a larger diameter of cutting head always implies a greater coal mining efficiency.It is necessary to select a suitable diameter and overlap length of the cutter head according to the geological conditions and the target recovery rate of coal seam.It is found that the annual coal production linearly increased with the increasing cutter head advancing speed.Furthermore, a suitable drilling speed parameter and the utilization of the high-pressure water jet are both important to the increase of coal production.http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2021.03.006steep-inclined coal seamfluidized miningreverse-circulated miningparallel excavating and drilling method |
| spellingShingle | Zhang Hongwei Cheng Jingyi Zhao Yinxin Li Yang Wan Zhijun Wang Chunyao Novel reverse-circulated excavating-drilling fluidized mining technique for steep-inclined coal seam 矿业科学学报 steep-inclined coal seam fluidized mining reverse-circulated mining parallel excavating and drilling method |
| title | Novel reverse-circulated excavating-drilling fluidized mining technique for steep-inclined coal seam |
| title_full | Novel reverse-circulated excavating-drilling fluidized mining technique for steep-inclined coal seam |
| title_fullStr | Novel reverse-circulated excavating-drilling fluidized mining technique for steep-inclined coal seam |
| title_full_unstemmed | Novel reverse-circulated excavating-drilling fluidized mining technique for steep-inclined coal seam |
| title_short | Novel reverse-circulated excavating-drilling fluidized mining technique for steep-inclined coal seam |
| title_sort | novel reverse circulated excavating drilling fluidized mining technique for steep inclined coal seam |
| topic | steep-inclined coal seam fluidized mining reverse-circulated mining parallel excavating and drilling method |
| url | http://kykxxb.cumtb.edu.cn/cn/article/doi/10.19606/j.cnki.jmst.2021.03.006 |
| work_keys_str_mv | AT zhanghongwei novelreversecirculatedexcavatingdrillingfluidizedminingtechniqueforsteepinclinedcoalseam AT chengjingyi novelreversecirculatedexcavatingdrillingfluidizedminingtechniqueforsteepinclinedcoalseam AT zhaoyinxin novelreversecirculatedexcavatingdrillingfluidizedminingtechniqueforsteepinclinedcoalseam AT liyang novelreversecirculatedexcavatingdrillingfluidizedminingtechniqueforsteepinclinedcoalseam AT wanzhijun novelreversecirculatedexcavatingdrillingfluidizedminingtechniqueforsteepinclinedcoalseam AT wangchunyao novelreversecirculatedexcavatingdrillingfluidizedminingtechniqueforsteepinclinedcoalseam |