Novel reverse-circulated excavating-drilling fluidized mining technique for steep-inclined coal seam

Zhang Hongwei; Cheng Jingyi; Zhao Yinxin; Li Yang; Wan Zhijun; Wang Chunyao

doi:10.19606/j.cnki.jmst.2021.03.006

Volume 6 Issue 3

May 2021

Turn off MathJax

Article Contents

Article Navigation > Journal of Mining Science and Technology > 2021 > 6(3): 296-304

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[J]. Journal of Mining Science and Technology, 2021, 6(3): 296-304. doi: 10.19606/j.cnki.jmst.2021.03.006

Citation:

PDF( 14470 KB)

Novel reverse-circulated excavating-drilling fluidized mining technique for steep-inclined coal seam

doi: 10.19606/j.cnki.jmst.2021.03.006

1.
Beijing Key Laboratory for Precise Mining of Intergrown Energy and Resources, China University of Mining and Technology-Beijing, Beijing 100083, China
2.
School of Energy and Mining Engineering, China University of Mining and Technology-Beijing, Beijing 100083, China
3.
Key Laboratory of Deep Coal Resource Mining, China University of Mining and Technology, Jiangsu Xuzhou 221116, China

Received Date: 2020-12-08
Rev Recd Date: 2021-03-25
Publish Date: 2021-06-01

Abstract

Abstract

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.
- steep-inclined coal seam,
- fluidized mining,
- reverse-circulated mining,
- parallel excavating and drilling method

FullText(HTML)

References(20)

References

[1]	伍永平, 贠东风, 解盘石, 等. 大倾角煤层长壁综采: 进展、实践、科学问题[J]. 煤炭学报, 2020, 45 (1): 24-34. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202001004.htm Wu Yongping, Yun Dongfeng, Xie Panshi, et al. Progress, practice and scientific issues in steeply dipping coal seams fully-mechanized mining[J]. Journal of China Coal Society, 2020, 45 (1): 24-34. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB202001004.htm
[2]	伍永平, 贠东风, 张淼丰. 大倾角煤层综采基本问题研究[J]. 煤炭学报, 2000, 25 (5): 465-468. doi: 10.3321/j.issn:0253-9993.2000.05.004 Wu Yongping, Yun Dongfeng, Zhang Miaofeng. Study on the emeletary problems of full-mechanized coal mining in greater pitching seam[J]. Journal of China Coal Society, 2000, 25 (5): 465-468. doi: 10.3321/j.issn:0253-9993.2000.05.004
[3]	谢俊文, 高小明, 上官科峰. 急倾斜厚煤层走向长壁综放开采技术[J]. 煤炭学报, 2005, 30 (5): 545-549. doi: 10.3321/j.issn:0253-9993.2005.05.001 Xie Junwen, Gao Xiaoming, Shangguan Kefeng. Long wall mechanized top-caving techniques along strike in steep-inclined thick coal seam[J]. Journal of China Coal Society, 2005, 30 (5): 545-549. doi: 10.3321/j.issn:0253-9993.2005.05.001
[4]	王家臣, 赵兵文, 赵鹏飞, 等. 急倾斜极软厚煤层走向长壁综放开采技术研究[J]. 煤炭学报, 2017, 42 (2): 286-292. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201702003.htm Wang Jiachen, Zhao Bingwen, Zhao Pengfei, et al. Long wall mechanized top-caving techniques along strike in steep-inclined thick coal seam[J]. Journal of China Coal Society, 2017, 42 (2): 286-292. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201702003.htm
[5]	黄志增, 任艳芳, 张会军. 大倾角松软特厚煤层综放开采关键技术研究[J]. 煤炭学报, 2010, 35 (11): 1878-1882. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201011025.htm Huang Zhizeng, Ren Yanfang, Zhang Huijun. Study on key technology of fully mechanized top coal caving in extra-thick soft coal seam with great dip angle[J]. Journal of China Coal Society, 2010, 35 (11): 1878-1882. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201011025.htm
[6]	赵国宏, 苑龙峰. 深部厚煤层俯斜大倾角综放开采技术[J]. 中国煤炭, 2013, 39 (12): 52-53. doi: 10.3969/j.issn.1006-530X.2013.12.014 Zhao Guohong, Yuan Longfeng. Technology of fully mechanized downward caving mining with large angle in deep thick coal seam[J]. China Coal, 2013, 39 (12): 52-53. doi: 10.3969/j.issn.1006-530X.2013.12.014
[7]	李东印, 李化敏, 郑利军. 破碎顶板急倾斜中厚煤层新式采煤方法研究[J]. 煤炭工程, 2008, 10: 10-11. https://www.cnki.com.cn/Article/CJFDTOTAL-MKSJ200810004.htm Li Dongyin, Li Huamin, Zheng Lijun. Study on new mining method for steep inclined mediunl thick sealn with broken roof[J]. Coal Engineering, 2008, 10: 10-11. https://www.cnki.com.cn/Article/CJFDTOTAL-MKSJ200810004.htm
[8]	来兴平, 吴学明, 伍永平, 等. 急倾斜厚煤层102m阶段煤体综放开采煤体致裂综合分析[J]. 西安科技大学学报, 2009, 29 (3): 261-265. doi: 10.3969/j.issn.1672-9315.2009.03.003 Lai Xingpin, Wu Xuemin, Wu Yongping, et al. Comprehensive analysis of coal break on steep and thick coal seam 102m section[J]. Journal of Xi'an University of Science and Technology, 2009, 29 (3): 261-265. doi: 10.3969/j.issn.1672-9315.2009.03.003
[9]	石平五. 急斜煤层老顶破断运动的复杂性[J]. 矿山压力与顶板管理, 1999(3): 26-28. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL1999Z1009.htm Shi Pingwu. The complexity of breaking movement of the old roof of steep coal seam[J]. Journal of Mining and Safety Engineering, 1999(3): 26-28. https://www.cnki.com.cn/Article/CJFDTOTAL-KSYL1999Z1009.htm
[10]	伍永平, 刘孔智, 贠东风, 等. 大倾角煤层安全高效开采技术研究进展[J]. 煤炭学报, 2014, 39 (8): 1611-1618. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201408032.htm Wu Yongping, Liu Kongzhi, Yun Dongfeng, et al. Research progress on the safe and efficient mining technology of steeply dipping seam[J]. Journal of China Coal Society, 2014, 39 (8): 1611-1618. https://www.cnki.com.cn/Article/CJFDTOTAL-MTXB201408032.htm
[11]	何富连, 杨伯达, 田春阳, 等. 大倾角综放面支架稳定性及其控制技术研究[J]. 中国矿业, 2012, 21 (6): 97-100. doi: 10.3969/j.issn.1004-4051.2012.06.026 He Fulian, Yang Boda, Tian Cunyang, et al. Stability and control technology of powered support in deep inclined fully mechanized top-coal caving face[J]. China Mining Magazine, 2012, 21 (6): 97-100. doi: 10.3969/j.issn.1004-4051.2012.06.026
[12]	刘俊峰, 王国法. 大采深、大倾角煤层综采矿压显现规律研究[J]. 西安科技大学学报, 2007, 27 (3): 352-367. doi: 10.3969/j.issn.1672-9315.2007.03.004 Liu Junfeng, Wang Guofa. Strata behavior complexity in large mining depth and high inclined seam[J]. Journal of Xi'an University of Science and Technolog, 2007, 27 (3): 352-367. doi: 10.3969/j.issn.1672-9315.2007.03.004
[13]	王国法, 徐亚军, 李丁一. 大倾角综采工作面液压支架刚柔组合倾覆力矩平衡的支护原理及其应用[J]. 岩石力学与工程学报, 2018, 37 (S2): 328-335. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2018S2034.htm Wang Guofa, Xu Yajun, Li Dingyi. Analysis on supporting principle and its application of powered support in large inclined fully mechanized face based on balance of rigid and flexible combined overturning moment[J]. Chinese Journal of Rock Mechanics and Engineering, 2018, 37 (S2): 328-335. https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2018S2034.htm
[14]	茹新华, 刘顺娟. 履带式无线遥控采煤机在急倾斜煤层采煤工作面的研究与应用[J]. 中国设备工程, 2020(18): 161-163. doi: 10.3969/j.issn.1671-0711.2020.18.095 Ru Xinhua, Liu Sunjuan. Study and application of crawler wireless remote control coal shearer in working face of steep coal seam[J]. China Plant Engineering, 2020(18): 161-163. doi: 10.3969/j.issn.1671-0711.2020.18.095
[15]	娄军辉, 张彦宏, 裴志奇. 适应急倾斜煤层综放工作面液压支架的研究[J]. 煤矿机械, 2012, 33(4): 160-161. doi: 10.3969/j.issn.1003-0794.2012.04.070 Lou Junhui, Zhang Yanhong, Pei Zhiqi. Research on hydraulic support adapt to steep seam working face[J]. Coal Mine Machinery, 2012, 33(4): 160-161. doi: 10.3969/j.issn.1003-0794.2012.04.070
[16]	彭志文. 急倾斜煤层开采新方法的探索与应用[J]. 山东煤炭科技, 2020(8): 33-35. doi: 10.3969/j.issn.1005-2801.2020.08.012 Peng Zhiwen. Exploration and application of new mining method for steeply inclined coal seam[J]. Shandong Coal Science and Technology, 2020(8): 33-35. doi: 10.3969/j.issn.1005-2801.2020.08.012
[17]	王家臣, 杨胜利, 唐岳松. 一种急倾斜煤层流态化开采的方法: 中国, CN108775240B[P]. 2019-06-21.
[18]	赵一鸣, 张农, 潘东江, 等. 一种用于急倾斜煤层的钻采一体化方法: CN104481535A[P]. 2015-04-01.
[19]	程守业. 国内反井钻井技术发展综述[J]. 建井技术, 2017, 38(5): 14-17, 21. https://www.cnki.com.cn/Article/CJFDTOTAL-JJJS201705003.htm Cheng Shouye. Overview on development of raise boring technology in China[J]. Mine Construction Technology, 2017, 38(5): 14-17, 21. https://www.cnki.com.cn/Article/CJFDTOTAL-JJJS201705003.htm
[20]	黄良秋. 反井钻机在60°长斜井施工中的应用[J]. 建井技术, 2015, 36 (S2): 46-49. https://www.cnki.com.cn/Article/CJFDTOTAL-YNSD200704025.htm Huang Liangqiu. The application of raise boring machine in 60° long slope construction[J]. Mine Construction Technology, 2015, 36 (S2): 46-49. https://www.cnki.com.cn/Article/CJFDTOTAL-YNSD200704025.htm

Relative Articles

Supplements(0)

Cited By

Proportional views

Proportional views

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Figures(9)

Get Citation

PDF

XML

Article Metrics

Article views (481) PDF downloads(25)

Novel reverse-circulated excavating-drilling fluidized mining technique for steep-inclined coal seam

doi: 10.19606/j.cnki.jmst.2021.03.006

Abstract

References

Proportional views

Catalog

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Proportional views

Export File

Citation

Format

Content