Top

Bulletin of Engineering Geology and the Environment

Published in:

19-01-2021 | Original Paper

Effect of overburden bending deformation and alluvium mechanical parameters on surface subsidence due to longwall mining

Published in: Bulletin of Engineering Geology and the Environment | Issue 3/2021

Activate our intelligent search to find suitable subject content or patents.

search-config

AI-assisted search

Off

Abstract

Longwall extraction of coal seam disturbs the whole overburden strata, from the coal seam to the surface, and forms a subsidence basin. This paper investigated the mechanism of the overburden strata bending deformation, the alluvium mechanical parameters, and their effect on surface subsidence by the theoretical analysis and numerical simulation analysis. The dynamic processes of overburden failure and surface subsidence due to longwall mining was analyzed by a novel two-dimensional trapezoidal-area method. A “π-shaped” model was first developed to reveal that surface subsidence consists of the overburden strata bending deformation and the subsidence of the alluvium. The process and mechanism of the overburden strata bending transfer were analyzed, and two mechanical models of the strata bending deformation were established, i.e., the strata suspended bending model and the strata overhanging bending model. The maximum subsidence equation of the overburden strata bending basin was derived based on the theoretical analysis. Also, the effect of the alluvium mechanical parameters on the surface subsidence was investigated by numerical simulation analysis. The rationalities of the numerical simulation were validated by the field measurements. The results show that surface subsidence increases logarithmically during increased alluvium thickness and decreases exponentially and logarithmically during increased internal friction angles and increased cohesions, respectively.

previous article Tensile strength of unsaturated coarse and fine-grained soils

next article Determination of nonlinear seepage slope for dislocation interface by in situ tests

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

über 67.000 Bücher
über 390 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Maschinenbau + Werkstoffe

Jetzt Wissensvorsprung sichern!

inform now

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

über 102.000 Bücher
über 537 Zeitschriften

aus folgenden Fachgebieten:

Automobil + Motoren
Bauwesen + Immobilien
Business IT + Informatik
Elektrotechnik + Elektronik
Energie + Nachhaltigkeit
Finance + Banking
Management + Führung
Marketing + Vertrieb
Maschinenbau + Werkstoffe
Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

inform now

Asadi ASK, Goshtasbi K et al (2005) Development of a new mathematical model for prediction of surface subsidence due to inclined coal-seam mining. J South Afr Inst Min Metall 105:15–20

Bai E, Guo W, Tan Y, Yang D (2018) The analysis and application of granular backfill material to reduce surface subsidence in China’s northwest coal mining area. PLoS One 13:e0201112. https://doi.org/10.1371/journal.pone.0201112CrossRef

Chang Z, Wang J, Chen M, Ao Z, Yao Q (2015) A novel ground surface subsidence prediction model for sub-critical mining in the geological condition of a thick alluvium layer. Front Earth Sci 9:330–341. https://doi.org/10.1007/s11707-014-0467-2CrossRef

Cui X-M, Li C-Y, Hu Q-F, Miao X-X (2013) Prediction of surface subsidence due to underground mining based on the zenith angle. Int J Rock Mech Min Sci 60:246–252. https://doi.org/10.1016/j.ijrmms.2012.12.036CrossRef

Ghabraie B, Ren G, Barbato J, Smith JV (2017a) A predictive methodology for multi-seam mining induced subsidence. Int J Rock Mech Min Sci 93:280–294. https://doi.org/10.1016/j.ijrmms.2017.02.003CrossRef

Ghabraie B, Ren G, Smith JV (2017b) Characterising the multi-seam subsidence due to varying mining configuration, insights from physical modelling. Int J Rock Mech Min Sci 93:269–279. https://doi.org/10.1016/j.ijrmms.2017.02.001CrossRef

Ghabraie B, Ren G, Zhang X, Smith J (2015) Physical modelling of subsidence from sequential extraction of partially overlapping longwall panels and study of substrata movement characteristics. Int J Coal Geol 140:71–83. https://doi.org/10.1016/j.coal.2015.01.004CrossRef

Guo W, Zhao G, Lou G, Wang S (2019) A new method of predicting the height of the fractured water-conducting zone due to high-intensity longwall coal mining in China. Rock Mech Rock Eng 52:2789–2802. https://doi.org/10.1007/s00603-018-1567-1CrossRef

Hamdi P, Stead D, Elmo D, Töyrä J (2018) Use of an integrated finite/discrete element method-discrete fracture network approach to characterize surface subsidence associated with sub-level caving. Int J Rock Mech Min Sci 103:55–67. https://doi.org/10.1016/j.ijrmms.2018.01.021CrossRef

Howladar MF, Hasan K (2014) A study on the development of subsidence due to the extraction of 1203 slice with its associated factors around Barapukuria underground coal mining industrial area, Dinajpur, Bangladesh. Environ Earth Sci 72:3699–3713. https://doi.org/10.1007/s12665-014-3419-yCrossRef

Ju J, Xu J (2015) Surface stepped subsidence related to top-coal caving longwall mining of extremely thick coal seam under shallow cover. Int J Rock Mech Min Sci 78:27–35. https://doi.org/10.1016/j.ijrmms.2015.05.003CrossRef

Khan SD, Huang Z, Karacay A (2014) Study of ground subsidence in Northwest Harris county using GPS, LiDAR, and InSAR techniques. Nat Hazards 73:1143–1173. https://doi.org/10.1007/s11069-014-1067-xCrossRef

Lawson HE, Tesarik D, Larson MK, Abraham H (2017) Effects of overburden characteristics on dynamic failure in underground coal mining. Int J Min Sci Technol 27:121–129. https://doi.org/10.1016/j.ijmst.2016.10.001CrossRef

Li LC, Tang CA, Zhao XD, Cai M (2014) Block caving-induced strata movement and associated surface subsidence: a numerical study based on a demonstration model. Bull Eng Geol Environ 73:1165–1182. https://doi.org/10.1007/s10064-014-0656-yCrossRef

Liu L, Schaefer KM, Chen AC, Gusmeroli A, Zebker HA, Zhang T (2015) Remote sensing measurements of thermokarst subsidence using InSAR. J Geophys Res Earth Surf 120:1935–1948. https://doi.org/10.1002/2015jf003599CrossRef

Ma C, Cheng X, Yang Y, Zhang X, Guo Z, Zou Y (2016) Investigation on mining subsidence based on multi-temporal InSAR and time-series analysis of the small baseline subset—case study of working faces 22201-1/2 in Bu’ertai Mine, Shendong Coalfield, China. Remote Sens 8:951. https://doi.org/10.3390/rs8110951CrossRef

McCay AT, Valyrakis M, Younger PL (2018) A meta-analysis of coal mining induced subsidence data and implications for their use in the carbon industry. Int J Coal Geol 192:91–101. https://doi.org/10.1016/j.coal.2018.03.013CrossRef

Nie L, Zhang M, Jian H (2012) Analysis of surface subsidence mechanism and regularity under the influence of seism and fault. Nat Hazards 66:773–780. https://doi.org/10.1007/s11069-012-0515-8CrossRef

Peng SS (2006) Longwall mining. 2nd ed. American Rock Mechanics Association

Peng SS (2008) Coal mine ground control. 3rd ed. Morgantown

Peng SS, Cheng J, Du F, Xue Y (2019) Underground ground control monitoring and interpretation, and numerical modeling, and shield capacity design. Int J Min Sci Technol 29:79–85. https://doi.org/10.1016/j.ijmst.2018.11.026CrossRef

Ren W, Guo C, Peng Z, Wang Y (2010) Model experimental research on deformation and subsidence characteristics of ground and wall rock due to mining under thick overlying terrane. Int J Rock Mech Min Sci 47:614–624. https://doi.org/10.1016/j.ijrmms.2009.12.012CrossRef

Rošer J, Potočnik D, Vulić M (2018) Analysis of dynamic surface subsidence at the underground coal mining site in Velenje, Slovenia through modified sigmoidal function. Minerals 8:74. https://doi.org/10.3390/min8020074CrossRef

Sepehri M, Apel DB, Hall RA (2017) Prediction of mining-induced surface subsidence and ground movements at a Canadian diamond mine using an elastoplastic finite element model. Int J Rock Mech Min Sci 100:73–82. https://doi.org/10.1016/j.ijrmms.2017.10.006CrossRef

Wang B, Xu J, Xuan D (2018) Time function model of dynamic surface subsidence assessment of grout-injected overburden of a coal mine. Int J Rock Mech Min Sci 104:1–8. https://doi.org/10.1016/j.ijrmms.2018.01.044CrossRef

Wang F, Jiang B, Chen S, Ren M (2019a) Surface collapse control under thick unconsolidated layers by backfilling strip mining in coal mines. Int J Rock Mech Min Sci 113:268–277. https://doi.org/10.1016/j.ijrmms.2018.11.006CrossRef

Wang F, Xu J, Xie J (2019b) Effects of arch structure in unconsolidated layers on fracture and failure of overlying strata. Int J Rock Mech Min Sci 114:141–152. https://doi.org/10.1016/j.ijrmms.2018.12.016CrossRef

Wempen JM (2020) Application of DInSAR for short period monitoring of initial subsidence due to longwall mining in the mountain West United States. Int J Min Sci Technol 30:33–37. https://doi.org/10.1016/j.ijmst.2019.12.011CrossRef

Xu Y, Luo Y, Li J, Li K, Cao X (2018) Water and sand inrush during mining under thick unconsolidated layers and thin bedrock in the Zhaogu No. 1 Coal Mine, China. Mine Water Environ 37:336–345. https://doi.org/10.1007/s10230-018-0539-8CrossRef

Zhang B, Zhang L, Yang H, Zhang Z, Tao J (2016) Subsidence prediction and susceptibility zonation for collapse above goaf with thick alluvial cover: a case study of the Yongcheng coalfield, Henan Province, China. Bull Eng Geol Environ 75:1117–1132. https://doi.org/10.1007/s10064-015-0834-6CrossRef

Zhao G, Guo W, Li X (2019) Mechanical properties of mega-thick alluvium and their influence on the surface subsidence. Geotech Geol Eng 38:137–149. https://doi.org/10.1007/s10706-019-01003-yCrossRef

Zhao J, Konietzky H (2020) Numerical analysis and prediction of ground surface movement induced by coal mining and subsequent groundwater flooding. Int J Coal Geol 229:103565. https://doi.org/10.1016/j.coal.2020.103565CrossRef

Zhou D-W, Wu K, Cheng G-L, Li L (2015) Mechanism of mining subsidence in coal mining area with thick alluvium soil in China. Arab J Geosci 8:1855–1867. https://doi.org/10.1007/s12517-014-1382-2CrossRef

Title: Effect of overburden bending deformation and alluvium mechanical parameters on surface subsidence due to longwall mining
Publication date: 19-01-2021
Published in: Bulletin of Engineering Geology and the Environment / Issue 3/2021
Print ISSN: 1435-9529
Electronic ISSN: 1435-9537
DOI: https://doi.org/10.1007/s10064-020-02091-4

Springer Professional

Abstract

Please log in to get access to your license.

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Technik"

Springer Professional "Wirtschaft+Technik"

Other articles of this Issue 3/2021

Investigation of geometrical representative elementary volumes based on sampling directions and fracture sets

Experimental characterization of the small strain shear modulus of soft clay stabilized with cement and nano-SiO2 using bender element tests

Development of a new empirical model and adaptive neuro-fuzzy inference systems in predicting unconfined compressive strength of weathered granite grade III

Mechanism of pore water seepage in soil reinforced by step vacuum preloading

An experimental study of the relationship between the matric potential, unfrozen water, and segregated ice of saturated freezing soil

Investigation and characteristic analysis of a high-position rockslide avalanche in Fangshan District, Beijing, China