Abstract
Aiming at the problem of roadway support in the re-mining of residual coal in the goaf under the condition of regenerated roof in thick seam, this paper takes 6F301 re-mining face in Taiping Coal Mine as the background, combines with the roadway layout of the re-mining face, uses 3DEC simulation software to study the movement law of overlying rock in the re-mining face, and designs and studies the support scheme of the re-mining roadway according to the movement law of overlying rock. The results show that the shotcrete + steel roof support scheme can improve the strength parameters of surrounding rock, improve the stress state of surrounding rock and limit the yield failure of surrounding rock. The measured results show that the maximum relative displacement of roof and floor and two sides of roadway is 97 mm and 105 mm respectively, which effectively controls the deformation of surrounding rock strata with good supporting effect. Through on-site industrial test and application, it can effectively improve the average recovery rate of coal resources, improve the economic efficiency of coal mining, reduce the comprehensive cost of coal mining in coal mining enterprises, and has very important engineering application and research value.
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10706-019-00910-4/MediaObjects/10706_2019_910_Fig1_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10706-019-00910-4/MediaObjects/10706_2019_910_Fig2_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10706-019-00910-4/MediaObjects/10706_2019_910_Fig3_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10706-019-00910-4/MediaObjects/10706_2019_910_Fig4_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10706-019-00910-4/MediaObjects/10706_2019_910_Fig5_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10706-019-00910-4/MediaObjects/10706_2019_910_Fig6_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10706-019-00910-4/MediaObjects/10706_2019_910_Fig7_HTML.png)
![](http://media.springernature.com/m312/springer-static/image/art%3A10.1007%2Fs10706-019-00910-4/MediaObjects/10706_2019_910_Fig8_HTML.png)
Similar content being viewed by others
References
Feng G-R, Guo F, Bai J-W et al (2017) Safety mining evaluation of middle abandoned coal seam in “upper pillar-lower longwall”composite mining areas. J China Coal Soc 42(9):2245–2253
Guo W-B, Bai E-H, Yang D-M (2018) Study on the technical characteristics and index of thick coal seam high-intensity mining in coalmine. J China Coal Soc 43(8):2117–2212
Jiang B-Y, Wang L-G, Lu Y-L (2016) Ground pressure and overlying strata structure for a repeated mining face of residual coal after room and pillar mining. Int J Min Sci Technol 26(4):645–652
Li D-Z (2013) Special mining technology in coal mines, vol 165. China University of Mining and Technology Press, Xuzhou
Li F-Y, Wang W-W et al (2009) Roof control technology of multi-layer mining face under thin coal seam. Min Saf Environ Prot 36(1):50–51
Lin B-Q, Wu W (2018) Coal demand in China’s current economic development. Soc Sci China (2):141–161, 207–208
Liu C, Gong P-L, Wang K et al (2015a) Roof stability for repeated mining workface passing through abandoned parallel gateway. J China Coal Soc 40(2):314–322
Liu C, Gong P-L, Wang K et al (2015b) Study on coupling support mechanism when longwall repeated mining face continuously crossing abandoned roadway. Min Res Dev 35(4):38–41
Ma Z-Q, Jiang Y-D, Yang Y-M (2015) Floor roadway stability in repeated mining of close distance coal seams in lu ling coal mine. Chin J Rock Mech Eng 34(S1):3320–3327
Ma W-Q, Wang T-X, Ma Z-Y (2017) Structure of regenerated roof and determination of support load in re-mining stope. Chin J Geotech Eng 39(10):1892–1900
Tian S-Z, Zhao P-D (2017) Coal consumption, pollution emission and regional economic growth. Inq Econ Issues (3):170–177
Wang X-F (2018a) Study on technological parameters of fully mechanized top-coal caving mining in thick coal seam. Coal Eng 50(9):56–58
Wang J-C (2018b) Engineering practice and theoretical progress of top-coal caving mining technology in China. J China Coal Soc 43(1):43–51
Wang H, Jiao S-J, Li X-S et al (2012) Study on numerical simulation of bolt support in gob-side roadway with coal pillar in multiple mining strip. Min Saf Environ Prot 39(5):22–25
Wang S-T, He B-Q, Qiu Z-L et al (2016a) Exploration of mining technology in aged mine. Coal Technol 35(1):12–13
Wang K, Gong P-L, Zhang X-Q et al (2016b) Characteristics and control of roof fracture in caving zone for residual coal mining face. Chin J Rock Mech Eng 35(10):2080–2088
Wei S-L (2010) Supporting technology of gob-side entry driving without coal pillar in double-mining face of three-soft coal seam. Coal Sci Technol 38(12):33–35
Wei G-S, Wang K, Zhang X-Q et al (2017) Application of soft rock coupling support in secondary activation roadway at residual mining gob. China Coal 43(11):64–68
Xu N-Z (2008) Problems and direction of thick seam mining in china. Coal Eng (12):5–7
Xu Z-H, Zhao Y-S, Gao H-B et al (2015) Several problems of the old mining remnants in longwall fully mechanized mining technology. J China Coal Soc 40(S1):33–39
Yang T-F (2018) Study on strata behavior law during fully mechanized top-coal caving in thick coal seam. Coal Eng 50(11):54–57
Yao B-H, Zhou H-F, Chen L (2010) Numerical simulation about fracture development in overlying rocks under repeated mining. J Min Saf Eng 27(3):443–446
Zhao P-K, Wang Y-H (2017) Optimization of remining roadway system based on numerical simulation. Min Res Dev 37(11):90–93
Zhao T, Lu Y, Liu C-Y (2017) Comprehensive optimization and engineering applications of thick residual coal re-mining methodology. J Intell Fuzzy Syst 32(3):2111–2122
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Liu, W., Guo, Z., Hou, J. et al. Research and Application of Support Technology for Re-mining Roadway in Goaf Under Regenerated Roof in Thick Coal Seam. Geotech Geol Eng 37, 4327–4335 (2019). https://doi.org/10.1007/s10706-019-00910-4
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10706-019-00910-4