Skip to main content
Top
Published in: Geotechnical and Geological Engineering 2/2020

30-09-2019 | Original Paper

Similar Material Simulation Test of Overlying Strata Characteristics of Isolated Working Face Mining with Thick-Hard Strata

Authors: C. Y. Jia, H. L. Wang, X. Z. Sun, K. M. Liu, G. B. Zhang, X. B. Yu, X. Y. Song

Published in: Geotechnical and Geological Engineering | Issue 2/2020

Log in

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

search-config
loading …

Abstract

The overlying strata spatial structure of isolated working face under thick-hard strata is complex, and the overlying strata movement is drastic. Rock burst in this kind of isolated working face is easy to occur under the influence of mining depth and geological structure. Aiming at the safety problems caused by the overlying strata movement deformation of the isolated working face under deep mining, one similar model of the thick-hard strata on the working face is built. The overlying strata structure and its evolution characteristics in the mining process of working face are studied by using a similar material simulation test. The results show that the overlying strata structure above the isolated working face is long-arm T-type spatial structure in the vertical section, and the coal body at the corner of isolated working face forms the stress concentration region. In addition, with the increase of the mining range, the coal pillar in the upper and lower sections compress and sink, resulting in the gob range increases, and the overlying strata re-move on both sides of isolated working face, the long-arm T-type overlying strata fracturing after reaching the limit of suspension, causing the isolated working face instability. It can be seen that the long-arm T-type structure is prone to large scale fracture movement of the key strata, and the risk of inducing strong rock burst is high. Therefore, when mining by strip method, the mining range of the working face on both sides of isolated working face should be increased, or the technology of cutting roof and pressure relief should be adopted to avoid the formation of long-arm T-type spatial structure above the isolated working face, so as to reduce the occurrence of rock burst.

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

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!

Literature
go back to reference Bornyakov SA, Panteleev IA, Tarasova AA (2016) Dynamics of intrafault deformation waves: results of physical simulation. Dokl Earth Sci 471:1316–1318CrossRef Bornyakov SA, Panteleev IA, Tarasova AA (2016) Dynamics of intrafault deformation waves: results of physical simulation. Dokl Earth Sci 471:1316–1318CrossRef
go back to reference Cao AY, Zhu L, Li F (2014) Characteristics of T-type overburden structure and tremor activity in isolated face mining under thick-hard strata. J China Coal Sci 39:328–335 Cao AY, Zhu L, Li F (2014) Characteristics of T-type overburden structure and tremor activity in isolated face mining under thick-hard strata. J China Coal Sci 39:328–335
go back to reference Chong KP, Kuruppu MD (1987) Fracture toughness determination of layered materials. Eng Fract Mech 28:43–54CrossRef Chong KP, Kuruppu MD (1987) Fracture toughness determination of layered materials. Eng Fract Mech 28:43–54CrossRef
go back to reference Dou LM, He H (2012) Study of OX-F-T spatial structure evolution of overlying strata in coal mines. Chin J Rock Mech Eng 31(3):453–460 Dou LM, He H (2012) Study of OX-F-T spatial structure evolution of overlying strata in coal mines. Chin J Rock Mech Eng 31(3):453–460
go back to reference Haimson B, Ovacich J (2003) Borehole instability in high-porosity Berea sandstone and factors affecting dimensions and shape of fracture-like breakouts. Eng Geol 69(3):219–231CrossRef Haimson B, Ovacich J (2003) Borehole instability in high-porosity Berea sandstone and factors affecting dimensions and shape of fracture-like breakouts. Eng Geol 69(3):219–231CrossRef
go back to reference Hou W, Huo HY (2012) Stope rock movement rule of C-shaped of overlying strata spatial structure and disaster causing mechanism of dynamic pressure. J China Coal Soc 37(2):269–274 Hou W, Huo HY (2012) Stope rock movement rule of C-shaped of overlying strata spatial structure and disaster causing mechanism of dynamic pressure. J China Coal Soc 37(2):269–274
go back to reference Jiang FX (2006) View point of spatial structures of overlying strata and its application in coal mine. J Min Saf Eng 23(1):30–33 Jiang FX (2006) View point of spatial structures of overlying strata and its application in coal mine. J Min Saf Eng 23(1):30–33
go back to reference Jiang JQ, Zhang PP, Nie LS (2014) Fracture laws and dynamic response analysis of high-position hard thick strata. Chin J Rock Mech Eng 33(7):1366–1374 Jiang JQ, Zhang PP, Nie LS (2014) Fracture laws and dynamic response analysis of high-position hard thick strata. Chin J Rock Mech Eng 33(7):1366–1374
go back to reference Mousavi Nezhad M, Fisher QJ, Gironacci E, Rezania M (2018) Experimental study and numerical modeling of fracture propagation in shale rocks during Brazilian disk test. Rock Mech Rock Eng 51:1755–1775CrossRef Mousavi Nezhad M, Fisher QJ, Gironacci E, Rezania M (2018) Experimental study and numerical modeling of fracture propagation in shale rocks during Brazilian disk test. Rock Mech Rock Eng 51:1755–1775CrossRef
go back to reference Shi H, Jiang FX (2004) Mechanical analysis of rupture regularity of hard and massive overlying strata of longwall face. Chin J Rock Mech Eng 23(18):3066–3069 Shi H, Jiang FX (2004) Mechanical analysis of rupture regularity of hard and massive overlying strata of longwall face. Chin J Rock Mech Eng 23(18):3066–3069
go back to reference Wang P, Jiang JQ, Zhang PP, Wu QL (2016) Breaking process and mining stress evolution characteristics of a high-position hard and thick stratum. Int J Min Sci Technol 26:563–569CrossRef Wang P, Jiang JQ, Zhang PP, Wu QL (2016) Breaking process and mining stress evolution characteristics of a high-position hard and thick stratum. Int J Min Sci Technol 26:563–569CrossRef
go back to reference Yang PJ, He Y, Guo WB (2013) Disaster-causing mechanism and control measures of extremely thick and hard magmatic rock above working face. J China Coal Soc 38(12):2016–2112 Yang PJ, He Y, Guo WB (2013) Disaster-causing mechanism and control measures of extremely thick and hard magmatic rock above working face. J China Coal Soc 38(12):2016–2112
Metadata
Title
Similar Material Simulation Test of Overlying Strata Characteristics of Isolated Working Face Mining with Thick-Hard Strata
Authors
C. Y. Jia
H. L. Wang
X. Z. Sun
K. M. Liu
G. B. Zhang
X. B. Yu
X. Y. Song
Publication date
30-09-2019
Publisher
Springer International Publishing
Published in
Geotechnical and Geological Engineering / Issue 2/2020
Print ISSN: 0960-3182
Electronic ISSN: 1573-1529
DOI
https://doi.org/10.1007/s10706-019-01076-9

Other articles of this Issue 2/2020

Geotechnical and Geological Engineering 2/2020 Go to the issue