scholarly journals Methods and costs of thin-seam mining. Final report, 25 September 1977-24 January 1979. [Thin seam in association with a thick seam]

1981 ◽  
Author(s):  
T.E. Finch ◽  
E.L. Fidler
Keyword(s):  
Final Report ◽  
Thick Seam ◽  
Thin Seam ◽  
Seam Mining

scholarly journals Characteristics of Strata Behavior during Thick Seam Mining by Fully-Mechanized Top Coal Caving in a Loess-Covered Gullied Region

Minerals ◽  
2017 ◽  
Vol 7 (4) ◽  
pp. 63 ◽  
Author(s):  
Xu-feng Wang ◽  
Yang Wang ◽  
Dong-sheng Zhang ◽  
Hong-zhi Wang ◽  
Yang Zhang ◽  
...  
Keyword(s):  
Thick Seam ◽  
Strata Behavior ◽  
Seam Mining

Driving and ventilating shallow development workings in thick seam mining

1993 ◽  
Vol 28 (5) ◽  
pp. 472-474 ◽  
Author(s):  
A. M. Goryunov ◽  
V. I. Klopov ◽  
G. I. Kulakov ◽  
A. N. Naumov ◽  
V. M. Makridin ◽  
...  
Keyword(s):  
Thick Seam ◽  
Seam Mining

scholarly journals Gob-Side Entry Retaining Involving Bag Filling Material for Support Wall Construction

2020 ◽  
Vol 12 (16) ◽  
pp. 6353
Author(s):  
Zhaowen Du ◽  
Shaojie Chen ◽  
Junbiao Ma ◽  
Zhongping Guo ◽  
Dawei Yin
Keyword(s):  
Field Tests ◽  
Filling Material ◽  
Construction Technology ◽  
Working Face ◽  
Support Resistance ◽  
Pillar Mining ◽  
High Production ◽  
Wall Construction ◽  
Thin Seam ◽  
Seam Mining

Gob-side entry retaining, also termed as non-pillar mining, plays an important role in saving coal resources, high production and efficiency, extending the service life of mine and improving the investment benefit. Herein, a gob-side entry retaining method involving the use of bag filling material for wall construction is proposed based on the thin seam mining characteristics. First, a gob-side entry retaining mechanical model is established, and the side support resistance of the 8101 working face is calculated. The mechanical properties of the bag material are investigated through experiments, and the construction technology of the gob-side entry retaining approach involving the use of bag filling material for wall construction is introduced. The deformation on the two sides, the roof and floor of the roadway, are simulated via numerical methods and monitored during field tests. The results show a small control range for the deformations and a good roadway retention effect, thereby proving the feasibility of the bag filling material for wall construction. This study provides a reference for the development of gob-side entry retaining mining for thin coal seams.

Analysis of Three-Dimensional Numerical Simulationin on Overlying Strata’s Stress Field and Displacement Field in Thick Seam Mining

2013 ◽  
Vol 718-720 ◽  
pp. 1919-1922
Author(s):  
Meng Lin Xu ◽  
De Shen Zhao
Keyword(s):  
Numerical Simulation ◽  
Stress Field ◽  
Coal Mining ◽  
Displacement Field ◽  
Three Dimensional ◽  
Mining Technology ◽  
Thick Seam ◽  
High Efficient ◽  
Seam Mining ◽  
Overburden Strata

It takes the typical coal of mining in S2S9 face of Daping mine, using the 3-D numerical simulation to reveal on its face with the vertical characteristics of the stress field and displacement field .The study showed that the overburden strata migration features during the mining process in in thick seam mining of Daping mine.This research can be a reference for safety and high efficient coal mining of other parts of the soft overburden in extra- thick seam mining technology.

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