Deformation mechanism and treatment technology research of coal pillars in acute inclined goafs under expressway
Applied Geophysics - Trang 1-15 - 2023
Tóm tắt
When the expressway crosses the goafs inevitably, the design is generally to build the road on coal pillars as much as possible. However, the existing coal pillars are often unable to meet relevant requirements of highway construction. Combining three-dimensional physical model tests, numerical simulations and field monitoring, with the Urumqi East Second Ring Road passing through acute inclined goafs as a background, the deformation and failure mechanism of the overlying rock and coal pillars in acute inclined goafs under expressway load were studied. And in accordance with construction requirements of subgrade, comprehensive consideration of the deformation and instability mechanism of acute inclined goafs, the treatment measures and suggestions for this type of geological disasters were put forward. The research results confirmed the rationality of coal pillars in acute inclined goafs under the expressway through grouting. According to the ratio of different overlying rock thickness to coal pillar height, the change trend and value of the required grouting range were summarized, which can provide reference for similar projects.
Tài liệu tham khảo
Bao Weixing, Ma Zhiwei, Wang Haibo, Ren Jianjun, Huang Yong, Liang Bangwei, Li Yingchun, 2020, Integrated Treatment Technology of Storage-Mining Inclined Goaf under Expressway: Advances in Civil Engineering, 1–19.
D. Mondal and P. N. S. Roy, 2019, Fractal and seismic b-value study during dynamic roof displacements (roof fall andsurface blasting) for enhancing safety in the longwall coal mines: Engineering Geology, 253, 184–204.
Kumar Ashok, Kumar Dheeraj, Singh Arun Kumar, et al., 2019, Roof sagging limit in an early warning system for safe coal pillar extraction: International Journal of Rock Mechanics and Mining Sciences, 123, 104131.
Kumar, R., Das, A. J., Mandal, P. K., et al., 2021, Probabilistic stability analysis of failed and stable cases of coal pillars: International Journal of Rock Mechanics and Mining Sciences, 144, 104810.
Das Arka Jyoti, Mandal Prabhat Kumar, Paul Partha Sarathi, et al., 2019, Assessment of the Strength of Inclined Coal Pillars through Numerical Modelling based on the Ubiquitous Joint Model: Rock Mechanics and Rock Engineering.
Singh K.K.K, Singh P.K, Roy M.P., 2016, Resistivity imaging technique to investigate the subsurface strata conditions due to blasting in underground coal mines in India: Near Surface Geophysics, 14(1), 47–56.
Yu A Gaziev, Kh A Rizaev, 2004, Goaf filling with industrial wastes: Journal of Mining Science, 40(5), 528–530.
He J, 2018, Combined Application of Wide-Field Electromagnetic Method and Flow Field Fitting Method for High-Resolution Exploration: A Case Study of the Anjialing No. 1 Coal Mine: Engineering, 4, 667–675.
Yang D, Guo W, Tan, 2018, Application of magnetotelluric method to the detection of overburden failure height in shallow seam mining: Arabian Journal of Geosciences, 11, 350–359.
Shi L, Wang Y, Qiu M, Gao W, Zhai P, 2019, Application of three-dimensional high-density resistivity method in roof water advanced detection during working stope mining: Arabian Journal of Geosciences, 12, 464–474.
Zhuravkov Michael, Ji Shunying, Kanavalau Aleg, 2020, Modeling of deformation processes in rock massif in the vicinity of underground goafs considering the formation of discontinuity zones: Theoretical and Applied Mechanics Letters, 10(2), 92–97.
I S Lomakin, A A Tsayukov, 2021, Estimating the influence of the technological interlayer lamination on stability of the goaf supporting elements: Procedia Structural Integrity, 32, 117–123.
Boothukuri Veera Reddy, Bhattacharjee Ram Madhav, Panigrahi Durga Charan, Benerjee Gautam, 2019, Impact of geo technical factors on strata behavior in longwall panels of Godavari Valley coal field-a case study: International Journal of Mining Science and Technology, 29(2), 335–341.
YANG Jingming, WEI Zhouzheng, GAO Xiaowei, 2014, The application of the methods of high density resistivity method and transient electromagnetic to detecting coal mining goafs and to inspect grouting effect: Progress in Geophysics, 29(1), 362–369.
Fang Lei, Li Chunmiao, Pei Zongping, 2013, The Stability Evaluation of Goafs in Coal Mine: Chinese Journal of Underground Space and Engineering, 9(S2), 2034–2039.
LIU Junyong, YIN Weilin, LI Gang, 2015, Application of Transient Electromagnetic Method in Inspection Engineering of Grouting Quality in Goafs of Highway: HIGHWAY, 60(05), 12–16.
LIU Zhenming, LIU Shiqi, TANG Xiaomou, 2014, Study on Application of Comprehensive Geophysical Exploration Combining Seismic Tomography with Seismic Imaging Method: JOURNAL OF RAILWAY ENGINEERING SOCIETY, 2, 11–14.
Bharti, A. K., Pal, S. K., Priyam, P., Pathak, V. K., Kumar, R., Ranjan, S. K., 2016, Detection of illegal mine voids using electrical resistivity tomography: The case-study of Raniganj coalfield (India): Engineering Geology, 213, 120–132.
Liu Z, Cui B, Liang Y, Guo H, Li Y, 2019, Study on Foundation Deformation of Buildings in Mining Subsidence Area and Surface Subsidence Prediction: Geotechnical and Geological Engineering, 37, 1755–1764.
YANG Ke, XIE Guangxiang, CHANG Jucai, 2009, Study on the Stability of Rock Surrounding Gateway with Different Coal-pillar Widths: Chinese Journal of Underground Space and Engineering 5(05), 991–995.
Yang Baoguo, 2019, Research of Reasonable Width of Coal pillars in Fully Mechanized Face: Shandong Coal Technology, 1, 43–45.
FAN Huihe, JIANG Qinghong, LIU Haiyan, 2010, Study on Coal Pillar in Preventing Destruction to Overlying Highways Caused by Mined-out Area: Subgrade Engineering, 1, 54–56.
Gao Yulan, Nie Chengkai, Ma Jianzhong, et al., 2011, Guidelines for Design and Construction of Highway Engineering in the Mined-out Area, Bejing, 49–50.