刀柱式采空区遗留资源长壁综放复采关键技术及应用

doi:10.11799/ce202604003

Abstract

Abstract:

In response to the unclear situation of residual resources in the goaf of the Daqiao mine and the difficulty of safe and efficient recovery, this paper studied the adaptability of longwall fully mechanized mining of residual resources in the goaf of the Daqiao mine. The strength size effect of a single cutting column was analyzed, and a mechanical model of the coal column group roof system in the goaf was constructed. The stability of the entire coal column group roof system in the goaf of the Daqiao mine was studied; Based on the detection and analysis of coal seam characteristics, it is believed that the top of the double mining face in the goaf of the cutter column is a loose structure, and the basic top is a block structure. The interaction relationship between the support and the surrounding rock belongs to the given load state. A calculation model for the support strength under the action of the block loose roof is constructed; On site mining verification shows that the working resistance of the support meets the needs of mining, which is consistent with theoretical calculations. The mining pressure is controllable, and the gas emission is within a safe range. The resource recovery rate of the working face has reached 93.4%, verifying its rationality and scientificity.

CLC Number:

TD823

References

[ ] 范维唐.煤炭在能源中处于什么地位[J].中国煤炭，2001(8) :4-6+3.
FAN Weitang. What role does coal play in the energy structure[J]. China Coal, 2001 (8) :4-6+3.
[2] 翟英达.采场上覆岩层中的面接触块体结构及其稳定性力学机理[M]. 北京，煤炭工业出版社，2006.
[3] 冯国瑞，张绪言，李建军，等. 刀柱采空区上方遗弃煤层上行开采可行性判定[J]. 煤炭学报,2009,34(6):726-730.
FENG Guorui, HOU Shuiyun, LIANG Chunhao, et al. Basic theories and key technologies of rock strata control for residual coal resources mining under complex conditions[J]. Coal science and Technology,2009,34(6):726-730.
[4] 吴士良，秦乐尧.刀柱采煤法采空区下长壁采场顶板控制研究[J].山东科技大学学报（自然科学版），2000，19(4): 102-104.
WU Shiliang, QIN Leyao. Study on longwall face roof control beneath the gob area mined with pillar supporting method[J]. Journal of Shandong University of Science and Technology(Natural Science) ,2000, 19(4): 102-104.
[5] 王明立，张华兴，张刚艳.刀柱式老采空区上行长壁开采的采矿安全评价[J].采矿与安全工程学报，2008，25(1)：87-90.
WANG Mingli, ZHANG Huaxing, ZHANG Gangyan. Safety assessment of ascending longwall mining over old rib pillar gobs[J]. Journal of Mining & Safety Engineering, 2008,25(1):87-90.
[6] 胡仲国，杨金顺，彭小元等.极近距离煤层刀柱采空区下走向长壁开采的探讨[J].煤炭科学技术， 2000，28 (4): 43-46.
HU Zhongguo, YANG Jinshun, PENG Xiaoyuan, et al. Discussion on the longwall mining under the cutter pillar gob of extremely close distance coal seam[J]. Coal Sci ence and Technology, 2000, 28(4) :43-46.
[7] 马金奎，郑立永，高新建，等.浅埋煤层房采破坏区充填复采技术研究与应用[J].煤炭工程，2024，56(4):16-21.
MA Jinkui, ZHENG Liyong, GAO Xinjian, et al. Research and application of filling remining technology in room mining failure area of shallow coal seam[J]. Coal Science and Technology, 2024, 56(4) :16-21.
[8] 刘欣欣, 齐学元, 耿俊俊. 浅埋房柱式采空区煤柱稳定性及控制研究[J]. 采矿与岩层控制工程学报, 2024, 6(2): 023537.
LIU Xinxin, QI Xueyuan, GENG Junjun. Stability and control of room-and-pillar mined-out area in shallow coal seam[J]. Journal of Mining and Strata Control Engineering, 2024, 6(2): 023537.
[9] 李晓龙.整合矿井复采条件下老空水防治技术体系研究[J].煤矿安全，2023，54(04):184-193.
LI Xiaolong. Study on system of prevention and control of old goaf water during coal mine re-mining [J]. Safety in Coal Mines, 2023,54(4):184-193.
[ 0]刘硕，杨元伟，牟海鹏，等. 残煤复采区巷道掘进凝胶堵漏防灭火技术研究[J]. 煤矿安全，2024，55（8）：88-96.
LIU Shuo, YANG Yuanwei, MOU Haipeng, et al. Research on gel plugging and fire prevention technology for roadway excavation in residual coal re-mining area[J]. Safety in Coal Mines, 2024, 55（8）: 88-96.
[ 1] 刘天泉.矿山岩体采动影响与控制工程学及其应用[J].煤炭学报，1995，20(1)：1-5.
LIU Tianquan. Mining influence and control engineering of mine rock mass and its application[J]. Journal of China Coal Society,1995 ,20(1): 1-5.
[12] 钱鸣高，石平五. 矿山压力与岩层控制[M]．徐州：中国矿业大学出版社，2003.
[13] 王家臣．极软厚煤层煤壁片帮与防治机制[J]．煤炭学报，2007，32（8）：785-788．
WANG Jiachen. Coal wall slab and prevention mechanism in extremely soft and thick coal seam[J]. Journal of China Coal Society, 2007,32(8):785-788.
[14] 姜福兴，张兴民，杨淑华，等. 长壁采场覆岩空间结构探讨[J]. 岩石力学与工程学报，2006，25(5): 979-984.
JIANG Fuxing, ZHANG Xingmin, YANG Shuhua, et al. Discussion on overlying strata spatial structures of longwall in coal mine[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25(5): 979-984.
[15] 王苏健，金声尧.类孤岛工作面复采方案优选分析研究［J］.煤炭科学技术，2021，49(9）：9-16.
WANG Sujian,JIN Shengyao. Analysis study on selective preference of recovery mining project for island- like working face[J]. Coal Science and Technology,2021,49(9):9-16.
[16] 谢伟，连全东. 综放开采矸石注浆充填技术的研究与应用[J].中国煤炭，2023，49(12):116-124.
XIE Wei, LIAN Quandong. Research and application of gangue grouting and filling technology in fully mechanized caving mining [J]. China Coal, 2023,49 (12):116-124.
[17] 毛德兵，尹希文，张会军. 我国煤矿顶板灾害防治与监测监控技术[J]．煤炭科学技术，2013，41(9) :105-108,121.
MAO Debing，YIN Xiwen，ZHANG Huijun. Technology of Prevention Ｒoof Disasters and Monitoring and Controlling in China Coal Mines [J]. Coal Science and Technology, 2013,41 (9):105-108,121.
[18] 郭文兵，葛志博，胡玉杭，等.厚松散层薄基岩综放开采覆岩破坏与地裂缝发育规律[J].矿业科学学报，2024, 9(5): 723-736.
GUO Wenbing, GE Zhibo, HU Yuhang, et al. Patterns of overburden failure and ground fissure development of thick loose layer and thin bedrock[J]. Journal of Mining Science and Technology, 2024, 9(5): 723-736.
[ 9] 钱鸣高，等. 岩层控制的关键层理论[M]. 中国矿业大学出版社，2000.
[20] 钟新谷. 顶板岩梁结构的稳定性与支护系统刚度[J]. 煤炭学报，1995，20(6): 601-606.
ZHONG Xingu. Stability of roof rock beam structure and stiffness of support system［J］．Journal of China Coal Society，1995，20(6): 601-606．
[2 ] 史元伟，宁宇，齐庆新. 综采放顶煤工作面岩层控制与工艺参数优选[M]. 中国矿业大学出版社，2006.
[22] 王国法，庞义辉. 基于支架与围岩耦合关系的支架适应性评价方法[J]. 煤炭学报，2016，41(6)，1348-1353.
Wang Guofa，Pang Yihui．Shield-roof adaptability evaluation method based on coupling of parameters between shield and roof strata［J］．Journal of China Coal Society，2016，41( 6) : 1348-1353．

[1]	. Research on sectional narrow coal pillar safe retention for end-zone coal caving face [J]. Coal Engineering, 2026, 58(8): 70-79.
[2]	. Research on the response law of conveying performance of backfill slurry based on response surface method [J]. Coal Engineering, 2026, 58(3): 173-181.
[3]	. Reasonable protective coal pillar retention and control for working faces in the footwall of a normal fault [J]. Coal Engineering, 2026, 58(2): 61-69.
[4]	. Study on the Influence Law of Sulfate Ion Concentration on the Strength of Coal Gangue-based Backfill Material [J]. Coal Engineering, 2025, 57(12): 203-209.
[5]	. Roof deformation patterns and key influencing factors in fully mechanized mining faces with paste filling [J]. Coal Engineering, 2025, 57(11): 1-9.
[6]	. Stability study of remaining coal pillars in underground room-and-pillar goaf under over-gob mining in shallow buried thin coal seams [J]. Coal Engineering, 2025, 57(11): 82-0.
[7]	. Construction of filling space enclosure model and simulation on blanking accumulation for double-shield filling mining [J]. Coal Engineering, 2025, 57(11): 122-130.
[8]	. Overburden fracture and deformation patterns in gently inclined coal seam working faces under different fault blocks [J]. Coal Engineering, 2025, 57(11): 141-149.
[9]	. Key technologies for intelligent transformation in complex coal seams [J]. Coal Engineering, 2025, 57(8): 1-7.
[10]	. Layout of mining roadways and surrounding rock control technology in the lower coal seam of contiguous coal seams [J]. Coal Engineering, 2025, 57(8): 16-23.
[11]	. Mechanism of gob-side roadway large deformation with gradient coal pillar in ascending mining and the sectional collaborative support technology [J]. Coal Engineering, 2025, 57(8): 42-48.
[12]	. Lagged top coal caving technologyat the ends of fully mechanized top coal caving faces [J]. Coal Engineering, 2025, 57(7): 1-7.
[13]	. Construction technology of excavation and support for shaft boring machine under freezing method conditions [J]. Coal Engineering, 2025, 57(6): 49-56.
[14]	. Reasonable top coal drawing rounds in horizontal section top-coal caving mining of Wudong Coal Mine#br# [J]. Coal Engineering, 2025, 57(5): 8-16.
[15]	. Characteristics of fly ash gangue based paste material and analysis of goaf filling technology [J]. Coal Engineering, 2025, 57(1): 77-82.

Key technology and application of longwall top coal caving re-mining for residual resources in wedge pillar goaf #br#

PDF (Mobile)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

Comments