Results 91 to 100 of about 1,604,914 (120)
In the process of roadway excavation in thick and hard coal seams with a hard roof, the instantaneous release of a large amount of elastic energy accumulated in coal and rock mass causes disasters.
Haitong Kang +4 more
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Mining dynamic stress evolution law and surrounding rock control technology of high stress soft rock roadway in Libi Coal Mine [PDF]
In order to solve the problem of deep high stress argillaceous soft rock floor drainage roadway affected by mining disturbance, taking the layout optimization and surrounding rock control of deep argillaceous soft rock floor drainage roadway in Libi Coal
Hailin CHEN +5 more
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Energy Science & EngineeringAddressing the challenges of surrounding rock control in gob‐side entry driving near an advancing working face affected by adjacent working faces and gobs, taking 5104 return airway of No.1 well in Checun Coal Mine as the background, using theoretical ...
Delong Cui +6 more
doaj +1 more source
Spatially intersecting roadways in mines are prone to stress concentration due to disturbances during mining operations, which significantly affects the stability of the inter-roadway surrounding rock between the roadways.
Liqiang Dong +4 more
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Web-Based Roadway Geometry Design Software for Transportation Education [PDF]
Traditionally, students use pencil and ruler to lay out lines and curves over contour maps for roadway geometry design. Numerous calculations of stopping sight distance, minimum turning radius, and curve alignments are required during the roadway design ...
Chen-Fu Liao, David Levinson
core
Applied SciencesTo reveal the deformation patterns of the surrounding rock in deeply buried straight-wall arch-shaped roadways under seepage action, this study, based on an FLAC3D numerical simulation and classic elastoplastic theory, investigates the influences of ...
Xuebin Xie, Liang Li
doaj +1 more source
, 2011 For operation roadway of anchor net support with rock burst hazard, the paper analyzed mechanism that anchor of roadway restrains hazard of pressure bump by use of dynamic theory and researched influence degree of different anchor parameters on ...
YAO Bao-zhu
core
Large-diameter pressure relief boreholes are one of the primary measures for preventing coal mine rockburst. However, the implementation of these boreholes disrupts the original support structure of the roadway surrounding rock, leading to conflicts with
Yishan Pan +5 more
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Aiming at the difficulties of large plastic failure range of surrounding rock and insufficient strength of bolt support system of the “strong roof and weak side” semi coal-rock roadway, taking 8# coal seam mining roadway of a certain mine as the ...
Bingyuan HAO, Xingyun REN, Ji ZHANG
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Large deformations in deep soft rock roadways primarily stem from low rock strength under high in situ stress and intense mining disturbance. This renders stability control a critical challenge in tunneling support engineering.
Minghao Yang +7 more
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