Zonal disintegration of rocks around breakage headings

Reuter, M.A.; Krach, M.; Kießling, U.

doi:10.1134/s1062739115020040

Cited by 7 publications

(2 citation statements)

References 6 publications

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“…Using advanced IT applications in [8], marco Systemanalyse und Entwicklung GmbH described a coal-gangue interface detector based on seismic sensor Marco ps/ks/b having a frequency range of 2.5-25000 Hz. The sensor senses vibro-acoustic effects generated in rock mass when the powered roof support unit advances to the top coal caving zone.…”

Section: Approaches To Top Coal Caving Automationmentioning

confidence: 99%

Longwall top coal caving automation concept

Никитенко

Kießling²,

Kizilov

et al. 2021

E3S Web Conf.

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This paper describes history of the longwall top coal caving technology. The devices capable to promote wider application of LTCC are discussed. The advantages, shortcomings and their elimination methods are specified. The authors designate the objectives to be met to implement the maximum potential of LTCC. The industry approach to these objectives is exemplified. The applicability of LTCC in combination with new-generation powered roof support with coal outlet in supported area in longwalls is discussed. The ways of finding solutions to the set problems are proposed.

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Section: Approaches To Top Coal Caving Automationmentioning

confidence: 99%

Longwall top coal caving automation concept

Никитенко

Kießling²,

Kizilov

et al. 2021

E3S Web Conf.

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show abstract

“…A mathematical model of zonal disintegration of rocks around a deep-level excavation was developed by Mirenkov (2014). Reuter et al (2015) described a model for rock failure around breakage headings in coal mines based on the 2-D problem from the theory of creep with finite strains. Numerical simulation methods have also been incorporated to study this problem.…”

Section: Introductionmentioning

confidence: 99%

Zonal disintegration test of deep tunnel under plane strain conditions

Tian

Tang

Liu

et al. 2020

Int J Coal Sci Technol

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To investigate the zonal disintegration form of the surrounding rock in deep tunnels, model tests were performed in the simulation set-up of fracture mechanism and support technology of surrounding rock in deep tunnel. The test results illustrate that the first fracture of the surrounding rock occurred at the intersection of the tunnel floor and the side wall. After more serious destruction, the side wall and the vault were destroyed. Although the fracture width of each surrounding rock mass was distinct, they were relatively uniform with a nearly continuous fracture form. The width of the split bodies of the model tunnels (i.e., the annular zonal disintegration area) developed with an increasing load. It was observed from the fitting curves of the data that all radial strain values of the surrounding rock were more symmetric with a smooth fitting curve, and the maximum value occurred near the tunnel wall before reducing instantly. The circumferential strain values were dispersed and the data were inconsistent with the fitting curve, which caused some data to be unreliable. The phenomenon of zonal disintegration was primarily caused by radial tension strain of the surrounding rock. This phenomenon would not extend indefinitely as the rupture range would be limited to a certain extent, because the maximum radial tension strain of the surrounding rock was less than the limiting value.

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From the alternating-sign explosion response of rocks to the pendulum waves in stressed geomedia. Part IV

Адушкин

Oparin

2016

J Min Sci

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Zonal disintegration of rocks around breakage headings

Cited by 7 publications

References 6 publications

Longwall top coal caving automation concept

Longwall top coal caving automation concept

Zonal disintegration test of deep tunnel under plane strain conditions

From the alternating-sign explosion response of rocks to the pendulum waves in stressed geomedia. Part IV

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