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A new coal mine floor rating system and its application to assess the potential of floor heave [PDF]

International Journal of Rock Mechanics and Minings Sciences, 2020
Several underground coal mines have reported floor heave associated with the buckling mechanism. However, studies on the coal mine floor, especially the buckling failure mechanism in the floor and relevant analysis techniques, are still insufficient ...
Hamed Lamei Ramandi, Bruce Hebblewhite, Serkan Saydam   +2 more
exaly   +2 more sources

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Control of floor heave with proper mine design — three case studies

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 1987
Abstract The results of three case studies concerning the control of floor-heave problems are presented. Finite element modeling was employed to identify the causes of excessive floor heave, to propose remedial measures, and to evaluate the effectiveness of mine layout design in controlling floor heave.
S.M. Hsiung, S.S. Peng
  +4 more sources

Mitigation of floor heave in West Kentucky Coal Mine

International Journal of Mining Science and Technology, 2016
A West Kentucky mine operation in No. 11 seam encountered floor heave, due to the localized increase in the thickness of the fireclay mine floor. Floor heave has overridden seals installed in two mined out panels. The third seal\u27s location was planned
Bradley, Joel, Unrug, Kot, Klimek, Mark, Perry, Kyle A.   +3 more
exaly   +2 more sources

Floor Heave Controlling Technology of Deep Soft Rock Roadway

Applied Mechanics and Materials, 2012
The floor heave is one of soft rock roadway distortion. Based on soft rock supporting theory and engineering practice, the program bolt-mesh-anchors and floor corner, bolts coupling support to control floor heave of the soft rock roadway is proposed. Numerical simulation results show that bolt-anchors can mobilize the strength of the deep adjacent rock,
Zhan Jin Li, Shi Bo Li, Xue Li Zhao
openaire   +1 more source

Parameter Design of Anti-Slide Pile Control Method in Floor Heave

Applied Mechanics and Materials, 2012
Floor heave is a kind of deformation form that rock and soil mass of roadway floor enter a plastic flow state under surrounding stress. Installing anti-slide piles is an effective method to control floor heave. Considering the stress conditions and the characteristic of slip line fields in geometry size when floor heave emerges, some parameters used to
Yan Qiu, Yu Hua Lu, Chun An You, Qiu Yuan Liu   +3 more
openaire   +1 more source

Numerical Research on the Floor Heave Control of Deep Roadway in Coal Mining

Advanced Materials Research, 2012
On the engineering background of coal mine roadway orbit, according to the destruction of its original roadway, the paper have analyzed the situation of the deformation in the roadway , using the method of numerical simulation. Besides, it also determined the stress distribution and the forces supporting of roadway in the deformation process ...
Fu Kun Xiao, Chun Jie Zhang, Li Wei Gao, Yang Yang Yue   +3 more
openaire   +1 more source

Mechanism and Control of Roadway Floor Heave in the Paleogene Soft Rock Surroundings

Geotechnical and Geological Engineering, 2019
To analyze the mechanism of roadway floor heave in the Paleogene soft rocks and provide corresponding control strategies, taking the monorail lane of the Liuhai Mine as the research background, the special geological conditions of the deep soft rock roadway and failure characteristics of the roadway floor are analyzed by means of an indoor physical ...
Jun Yang, Kaifang Zhou, Yu Cheng, Yubing Gao, Qinglong Wei, Yongguang Hu   +5 more
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Numerical simulation of grooving method for floor heave control in soft rock roadway

Mining Science and Technology (China), 2011
Abstract Grooving method can restrain the deformation and destruction of surrounding rock by transferring the maximum stress to deep rock, bringing about the effective control for floor heave in soft rock roadway. Based on this important effect, and to discuss the relationship between cutting parameters and pressure-relief effect, this paper carried ...
Sun Jin, Wang Lianguo
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Floor heave mechanism and stiff control technology by I-beam for deep mine roadway

Engineering Failure Analysis
Diyuan Li, Wenkai Ru, Pingkuang Luo
exaly   +2 more sources

Control Technology and Simulation Study of Floor Heave in High Stress Soft Rock Roadway

Geotechnical and Geological Engineering, 2020
In order to solve the problems of large deformation and difficult control of the soft rock roadway floor under the influence of high stress and mining stress superposition in Zhaogu mining area, this paper analyzes the stress environment and failure mechanism of the surrounding rock by means of on-site investigation, numerical simulation and on-site ...
Laizheng Xu, Sijiang Wei
openaire   +1 more source