International Journal of Mining Science and Technology, 2013 Comparing with the resin bolt, the hydraulic expansion bolt has different anchoring mechanism and application advantage. According to the working mechanism of the hydraulic expansion bolt, its anchoring force is expressed in four forms including support ...
Qingliang Chang +3 more
doaj +2 more sources
Flexural floor heave mechanism and floor corner piles control technology in soft rock roadway
矿业科学学报, 2021 In order to solve the problem of flexural floor heave support under the condition of weak floor with high stress, the supporting form of concrete filled steel tube floor corner pile is put forward.
Guo Dongming +6 more
doaj +2 more sources
Mechanism of Roadway Floor Heave Controlled by Floor Corner Pile in Deep Roadway under High Horizontal Stress [PDF]
Advances in Civil Engineering, 2021 In order to overcome the support difficulty of serious floor heave caused by rock burst, with the floor heave of ventilation roadway in Hegang Xing An Coal Mine as the engineering background, the treatment scheme of the concrete‐filled steel tube corner pile and floor grouting is put forward.
Xinchao Kang, Dongming Guo, Zhiying Lu
openaire +3 more sources
Physical model study on the mechanism of floor heave for the deep-buried roadway excavated in soft rock of gently inclined thin strata. [PDF]
Sci RepStrata structure is an important factor affecting floor heave of deep soft rock roadway, however, the mechanism of floor heave induced by the rock structure has not been fully understood, so it is still necessary to study the floor heave of deep-buried ...
Chen F +5 more
europepmc +2 more sources
Mechanism and control strategies of asymmetric floor heave under dynamic pressure in roof-cutting gob-side entry retaining: a case study. [PDF]
Sci RepRoof cutting for gob-side entry retaining actively modifies the structural configuration of the roof and the two ribs, which intensifies the inherent asymmetry in both the surrounding rock structure and the stress distribution.
Wang H +6 more
europepmc +2 more sources
Deformation control of asymmetric floor heave in a deep rock roadway: A case study
International Journal of Mining Science and Technology, 2014 Abstract In order to control asymmetric floor heave in deep rock roadways and deformation around the surrounding rock mass after excavation, in this paper we discuss the failure mechanism and coupling control countermeasures using the finite difference method (FLAC3D) combined with comparative analysis and typical engineering application at Xingcun ...
Xiaoming Sun
exaly +2 more sources
Floor heave mechanism in water-rich soft rock roadways and a DS-IBA control approach
Geomatics, Natural Hazards and Risk, 2022 Severe floor heave in underground soft rock roadways heavily affects mine safety and production efficiency. In the present study, the context of the Shanghaimiao mining area is analyzed as the research object.
Wenli Zhai, Fulian He
exaly +3 more sources
Applied SciencesAiming at the difficult problem of floor heave control in deep coal mine roadways, this paper took the 1224 transportation roadway of Shuguang Coal Mine in Shanxi as the engineering background and carried out the first underground industrial test of ...
Xuanqi Liu +3 more
doaj +2 more sources
Numerical studies of floor heave control by the rock bolts reinforcement technology in retained gob-side gateroad [PDF]
E3S Web of ConferencesThe effectiveness of modified rock bolts reinforcement technology for floor heave control in gob-side entry retaining was studied in this paper. A finite-element numerical simulation was used to analyse stress-strain state of surrounding rocks before and
Sakhno Ivan +3 more
doaj +4 more sources
Study on floor large deformation and failure mechanism of water-rich soft rock roadway. [PDF]
Sci RepThis study investigates the failure mechanisms and stability control of water-rich soft rock roadways, focusing on the severe floor heave in the north wing main roadway of Hongqi Coal Mine, China.
Li L +5 more
europepmc +2 more sources