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Determining the dimensions of combined supports in roadways
2011The predominant amount of European coal deposits exploited underground is extracted by the longwall method with controlled caving. Experience shows that roadways, which ensure all transport and ventilation in coalfaces, restrict both output and safety, as well as economy in coal production. The problem is urgent especially in deep mining.
P Kone_n_, R __upárek
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Finite Difference Analysis of Roadway Support
Advanced Materials Research, 2012Hunchun Mining Co., Ltd. for a 11910 face return air drift mine for the study of the background, using the finite difference software (FLAC) simulated roadway excavation and shoring, anchors through simulation analysis supporting roadway network cable and rock deformation stress distribution, simulation results show that the design of the anchor mesh ...
Yu Zhang, Xiang Yi Kong
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Roadway Anchor Support Design Method Based on the “Three Zones” of Roadway Roof
Advanced Materials Research, 2014Aiming at the problem of serious deformation and failure of the surrounding rock of the main roadways in diabase zone in west wing on-500m leve in Dongbaowei Coal Mine and roof caving occurring several times, the rupture characteristics of roadway roof rock was observed in this paper.
Zhi Gang Wang +4 more
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A Guidebook on Transit-Supportive Roadway Strategies
2016This report is a resource for transit and roadway agency staff seeking to improve bus speed and reliability on surface streets while addressing the needs of other roadway users, including motorists, bicyclists, and pedestrians.This guidebook (1) identifies consistent and uniform strategies to improve transportation network efficiency to reduce delay ...
Paul Ryus +4 more
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Strata loading of mine roadway supports
Mining Science and Technology, 1984Abstract Several tunnels and roadways in U.K. coal mines have been instrumented to establish an improved understanding of the general characteristics of rock pressure loading on steel supports in such excavations. The sites selected were in a depth range of 350–780 m below surface, whilst the geology was typically Carboniferous Coal Measures rock ...
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Comprehensive analysis of the support load in a backfilled roadway
International Journal of Surface Mining, Reclamation and Environment, 1996ABSTRACT A large number of open pit mines in operation are using heavy vehicles to transport the ore along the ramps. Normally the transportation distance increases greatly as mining progresses deeper. Meanwhile, there is a growing need of transition from surface to underground mining.
Yonglian Sun, Yaodong Jiang, Shiliang Lu
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Geogrid-Reinforced and Pile-Supported Roadway Embankment
Contemporary Issues in Foundation Engineering, 2005Settlement is one of the major concerns in roadway embankment construction in areas where soft soil deposits constitute the major portion of subsurface soil. A pile foundation system is an effective way to support an embankment in order to minimize total settlement.
Reinaldo Vega-Meyer, Yong Shao
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Research on Guided Roadway Pressure Relief Combined Supporting Technology in High Stress Roadway
Advanced Materials Research, 2014The problem of maintaining the surrounding rock in deep high-stress roadway has been a major subject in coal mining. The analysis of high stress roadway supporting mechanism, and the research on high stress roadway supporting technology as well as its adaptability have important significance in improving the support technology of mine.
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The Research and Application of FLAC3D in Optimization of Roadway Support
Advanced Materials Research, 2014This article describes the basic process of numerical simulation, and an example of Xinyu coal mine roadway numerical simulation research. And the support scheme is proposed by the numerical simulation result.
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