Conception for strata control and intelligent mining technology in deep coal mines with depth more than 1 000 m

被引：0

作者：

Kang H. ^{[1
,2
,3
]}

Wang G. ^{[1
,2
,3
]}

Jiang P. ^{[1
,2
,3
]}

Wang J. ^{[4
]}

Zhang N. ^{[5
]}

Jing H. ^{[5
]}

Huang B. ^{[5
]}

Yang B. ^{[4
]}

Guan X. ^{[6
]}

Wang Z. ^{[7
]}

机构：

[1] Coal Mining and Designing Department, Tiandi Science and Technology Co., Ltd., Beijing

[2] Coal Mining and Designing Branch, China Coal Research Institute, Beijing

[3] State Key Laboratory of Coal Mining and Clean Utilization, Beijing

[4] China University of Mining & Technology (Beijing), Beijing

[5] China University of Mining and Technology, Xuzhou

[6] Henan Polytechnic University, Jiaozuo

[7] Xinji Energy Co., Ltd., China National Coal Group Corp., Huainan

来源：

Meitan Xuebao/Journal of the China Coal Society | 2018年 / 43卷 / 07期

关键词：

Bolting-grouting-destressing; Coal mines with depth more than 1 000 m; Extra-long face; Group cooperative control; Hydraulic shield; Intelligent mining; Strata control;

D O I：

10.13225/j.cnki.jccs.2018.0634

中图分类号：

学科分类号：

摘要：

Deep resource development is an important area for Chinese future scientific and technological research and development.In this paper,the current status of strata control and intelligent mining technology for coal mines with a depth more than 1 000 m is evaluated.With the focuses on the theme of safe and efficient mining activity,taking into consideration of the interaction between entry excavation and coal extraction,some key scientific issues and technique conceptions are proposed aiming to increase the length of longwall face,achieve intensive production,reduce the rate of excavation,and increase coal recovery rate.There are four key scientific issues:1) the large-deformation mechanism of roadways with a depth 1 000 m and above; 2) the cooperative control principle of "bolting-grouting-destressing" for the rock surrounding a roadway; 3) the evolution mechanism of stresses and overlying structure of 350 m extra-long longwall face; and 4) multi-information integration intelligent mining mode for extra-long longwall face.These key scientific issues will provide a theoretical basis for strata control and intelligent mining in deep coal mines.Based on the characteristics of high in-situ stresses and strong mining induced stresses suffered by coal mine roadways at 1 000 m deep and above,a cooperative control technology called "bolting-grouting-destressing" is proposed to achieve an active support by means of a combination of rock bolts with high prestressed,high strength,and high impact toughness,high-pressure split grouting and modification of broken rock mass,and active destressing using hydraulic fracturing.It is expected that this trinity technology can solve the problem of strata control for coal mine roadways at 1 000 m deep and above.Based on the characteristics of partition breaking of overlying strata and dynamic migration of ground pressures during coal mining process in extra-long longwall face at 1 000 m depth,the anti-impact technology for hydraulic shields is developed.The self-adaptation group cooperative control technology and equipment with multi-information integration anti-impact hydraulic shields,and systematically integrating shearer and other equipments used in longwall face.In this way,a complete technology system of intelligent mining will be formed for extra-long longwall face at 1 000 m depth,aiming to provide theoretical and technical supports for the safe,efficient and high-recovery mining of deep coal resources. © 2018, Editorial Office of Journal of China Coal Society. All right reserved.

引用

页码：1789 / 1800

页数：11

共 31 条

[1] Xie H., Gao F., Ju Y., Et al., Quantitative definition and investigation of deep mining, Journal of China Coal Society, 40, 1, pp. 1-10, (2015)
[2] Kang H., Fan M., Gao F., Et al., Deformation and support of rock roadway at depth more than 1000 meters, Chinese Journal of Rock Mechanics and Engineering, 34, 11, pp. 2227-2241, (2015)
[3] Zhang N., Chen H., Chen Y., An engineering case of gob-side entry retaining in one kilometer-depth soft rock roadway with high ground pressure, Journal of China Coal Society, 40, 3, pp. 494-501, (2015)
[4] Xie H., Gao F., Ju Y., Research and development of rock mechanics in deep ground engineering, China Journal of Rock Mechanics and Engineering, 34, 11, pp. 2161-2177, (2015)
[5] Kang H., Wang J., Lin J., High pretensioned stress and intensive bolting system and its application in deep roadways, Journal of China Coal Society, 32, 12, pp. 1233-1238, (2007)
[6] Sun G., Zhu S., Jiang F., Et al., Safe mining technology at strong dynamic pressure area in deep extra-thick coal seam, Journal of China Coal Society, 40, pp. 12-18, (2015)
[7] Wang G., Pang Y., Ren H., Et al., Coal safe and efficient mining theory, technology and equipment innovation practice, Journal of China Coal Society, 43, 4, pp. 903-913, (2018)
[8] Wang J., Huang L., Li S., Et al., Development of intelligent technology and equipment in fully-mechanized coal mining face, Journal of China Coal Society, 39, 8, pp. 1418-1423, (2014)
[9] Wang Z., Research on"Three-in-one"compound stowing supporting technology for soft rock roadway in deep mine, Mining Safety & Environmental Protection, 43, 4, pp. 64-67, (2016)
[10] Singh R., Mandal P.K., Singh A.K., Et al., Upshot of strata movement during underground mining of a thick coal seam below hilly terrain, Int J Rock Mech Min Sci., 45, pp. 29-46, (2008)

← 1 2 3 4 →