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Study on Stability of Deep Joint Rock Roadway and Prestressed Anchor Support Design

Author: ZhaoBin
Tutor: WangTongXu
School: Shandong University of Science and Technology
Course: Engineering Mechanics
Keywords: Joints roadway Roof subsidence Bolting Friction Extrusion pressure UDEC
CLC: TD353
Type: Master's thesis
Year: 2009
Downloads: 218
Quote: 0
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Abstract


Mining Group , Jining Qufu Cheonan Star Mine a joint development roadway engineering background , research joints engineering characteristics bolting support the role of the mechanism . UDEC numerical simulation software , on different roadway width , joint spacing and bedding thickness ratio , coefficient of lateral pressure , project size and different joints pitch ratio prestressed conditions prestressed anchor support simulation analysis . Roof sinking with the variation of the actual situation of different projects , construction joints characteristics of surrounding rock stability . Focus from the level of the joint surface of the roadway roof extrusion pressure , vertical joints between the friction as well as changes in the size of the bolt axial force and distribution and other aspects of simulation analysis, the following conclusions: jointed rock bolt support role , can significantly increase the level of the joint surface between the rock squeeze pressure , thereby increasing the the joints friction surface , maintaining the stability of surrounding rock the improved roof stress distribution , and enhance the integrity of the roof . The above results on the Star Mine coal mining Driving and bolt support care to provide a theoretical basis for the guidance of the scene .

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CLC: > Industrial Technology > Mining Engineering > Mine the pressure and support > Mine support equipment > Roadway support
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