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Effect of bolting on roadway support in extremely weak rock. [PDF]
Springerplus, 2016 In mine roadway support operations, floor bolting not only played a role in floor heave control, but also in reinforcing roof and its two sides. Correspondingly, bolting of roof and two sides also played a part in floor heave control. To quantify the effect of such bolting, based on roadway support in extremely weak rock, three physical models were ...
Li Q, Shi W, Qin Z.
europepmc +3 more sources
Factors influencing the anti-impact performance of a “roadway rock support” system
Frontiers in Earth Science, 2023 A mechanical model of a circular section of a tunnel roadway considering damage is established to improve the impact protection performance of the “roadway rock-support” system and provide a theoretical basis for designing coal mine impact ground ...
Zhi Tang +3 more
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Geomechanics and Geophysics for Geo-Energy and Geo-ResourcesRoadway support can effectively improve the stability of roadway excavation and ensure the safety of underground mining. This study investigates the secondary support time and parameter optimization of combined support for a deep roadway in the stage of ...
Weile Geng +6 more
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Energy Science & Engineering, 2020 To control roadway under small abandoned mines in ultrathick coal seam, this paper analyzed its deformation and failure characteristics. As a result, the roadway occurred roof leakage and right rib extrusion. Based on above characteristics, the secondary
Yang Tai +4 more
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Research on supporting mechanism and application of new ductile thin spraying technology in coal mine roadway [PDF]
Scientific ReportsThe safety and stability of the roadway is the fundamental guarantee for safe, green, high-yield and efficient production in coal mines, and the surface support of the roadway surrounding rock is crucial for the stability and effectiveness of the entire ...
Ruijie Wang +4 more
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Continuous Support for Roadways [PDF]
Energies, 2021 Opening deeper coal seams requires constructing underground mine roadways in difficult geological conditions. Supporting of such roadways is subjected to a very high load from the rock mass. The types of roof supports used so far do not provide immediate support for the rock mass, which tends to converge the roadway, allowing for a rapid build-up of ...
Krzysztof Mazurek +3 more
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Advanced Support Technologies in Roadway
Applied Sciences, 2022 In the continuous development and application of underground spaces (such as roads, tunnels and underground caverns), safe and efficient support technology is an important means to maintain the stability and integrity of roadways [...]
Jiahao Sun, Guoming Liu, Xiangming Hu
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Investigation of the evolution and control of fractures in surrounding rock under different pressure relief and support measures in mine roadways prone to rockburst events [PDF]
Royal Society Open Science, 2021 This paper studies the evolution and control of surrounding rock under different pressure relief support conditions in mine roadways in which rockburst events have occurred.
Yongliang He +3 more
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Research on surrounding rock control technology of deep roadway based on butterfly failure theory
Meitan kexue jishu, 2023 At present, roadway surrounding rock control is still one of the major problems in deep mining of coal resources. The formation and development of the plastic zone of the surrounding rock is the main cause of large deformation and failure of roadway.
WANG Weijun +3 more
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Lithosphere, 2022 As one of the most common disasters in deep mine roadway, floor heave has caused serious obstacles to mine transportation and normal production activities. The third section winch roadway in the third mining area of Qitaihe Longhu coal mine has a serious
Xuming Zhou +7 more
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