Numerical modelling of shaft lining stability at deep mine

Jia, Yanling; Stace, Rod; Williams, A F

doi:10.1179/1743286312y.0000000022

Cited by 14 publications

(8 citation statements)

References 9 publications

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“…Numerical modelling can capture more of the complex material behaviour and problem geometries than simple analytical tools, as well as the soil/rock-shaft interactions that take place, most notably due to local mining activities. For example, Jia et al [4] presented a numerical study of deep mine and identified the cause and mechanisms of failure of the shaft linings in the affected zone. Mendez et al [5] developed a numerical model to examine the effect of the shaft lining-soil interaction on shaft pressures and concluded that neglecting the interaction between the shaft and soil, as assumed by most continuum models, leads to higher values of horizontal pressure.…”

Section: Advances In Materials Science and Engineeringmentioning

confidence: 99%

An Experimental Evaluation of the Weathering Effects on Mine Shaft Lining Materials

Yang

Marshall

Wanatowski

et al. 2017

Advances in Materials Science and Engineering

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Many shaft collapses are related to the deterioration and failure of the masonry shaft lining materials. In modern mine shaft, concrete is widely used to provide support. To analyse shafts stability, the properties of the lining need to be well defined. The behaviour of masonry and concrete can be considerably affected by long-term exposure to harsh mine water. This paper presents a study which focuses on the weathering effects of mine water on lining materials (brick, mortar, and concrete). To reproduce the weathering process, samples were placed into solutions of potable water, artificial mine water, and a more aggressive mine-water solution for just less than one year. Four phases of laboratory tests were conducted throughout the time period to assess the degradation of mechanical properties of the lining materials. Particular attention is given to the degradation of material strength and stiffness. Results indicate that the harsh acidic mine water has pronounced detrimental effects on the strength and stiffness of mortar. The weathering process is shown to have the most significant effect on the stiffness of concrete and mortar. It is also shown that the use of mass loss as an index for evaluation of mechanical properties may not be appropriate.

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Section: Advances In Materials Science and Engineeringmentioning

confidence: 99%

An Experimental Evaluation of the Weathering Effects on Mine Shaft Lining Materials

Yang

Marshall

Wanatowski

et al. 2017

Advances in Materials Science and Engineering

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“…These shafts pose a serious health and safety issue to the general public. Various research projects have been undertaken relating to the behaviour of mine shafts, including Burke and James (1990), Erasmus et al (2001), Güler (2013), Jia et al (2013), Jia (2010, Jiang and Liu (2010), Lade et al (1981), Ortlepp et al (2008) and Ortlepp (1974). The stiffness and strength of shaft linings inevitably decreases with time due to various reasons, including weathering effects, often in harsh acidic mine water.…”

Section: Introductionmentioning

confidence: 98%

Centrifuge Modelling of the Collapse of Shaft Linings

Yang¹,

Marshall

Stace

et al. 2014

Rock Mechanics and Its Applications in Civil, Mining, and Petroleum Engineering

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The collapse of abandoned and often hidden mine shafts is a serious problem in the UK and many parts of Europe. The collapse of these shafts is often related to the failure of the shaft lining. Understanding the mechanisms of ground movements around deforming/collapsing mine shafts is therefore important in the assessment of mine shaft location as well as lining condition. This paper presents an experimental study of the mechanisms of soil failure around a deforming shaft lining. Geotechnical centrifuge modelling of reduced-scale buried mine shafts were tested to determine the magnitude and pattern of ground deformations that occurred during loss of internal support pressure. An axis-symmetric centrifuge container was used along with half-cylindrical model shafts. These allowed for the acquisition of digital images of the sub-surface soil and mine shafts which enabled the measurement of soil and shaft deformation using image analysis techniques. The results from two model shaft tests are presented; the first test involved the loss of internal support along the entire shaft length whereas the second test studied the effect of a discrete weakened zone within the lining.

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“…For example, the authors (Konstantinova, S. A., Chernopazov, S. A., 2006) give an example of calculating the shaft support loads using the finite element method. (Jia Yudan, 2010;Jia, Y. D. et al, 2013) discussed the method of calculating vertical shaft lining by means of numerical modelling. Also, in their work, they described a study where the stress state of a concrete lining of a vertical shaft located in salt formations was predicted by taking into account the time factor.…”

Section: Introductionmentioning

confidence: 99%

Analysis of shaft lining stress state in anhydrite-rock salt transition zone

Karasev

Protosenya

Katerov

et al. 2022

MGPB

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The main question of this paper is the stress-strain state prediction of the vertical shaft’s combined lining located at the interface of two layers of dolomite and salt. The study predicts geomechanical processes at the contact of the dolomite layer and the salt layer in the vicinity of the vertical shaft’s expanded section, taking into account the operating life of a vertical shaft is equal to 50 years. The results combined lining’s stress-strain state, represented as a four – layer medium, where the external layer is concrete, and the three inner layers are used to account for the heterogeneity of cast-iron tubing and are compared with the results received when taking into account the pipe structure. The solution of the problem was carried out in a three-dimensional statement. The calculation of the tubing lining, considering its actual geometry, will increase the accuracy of the forecast of the stress state of the lining, which in turn will favourably affect the justification of its parameters.

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Numerical modelling of shaft lining stability at deep mine

Cited by 14 publications

References 9 publications

An Experimental Evaluation of the Weathering Effects on Mine Shaft Lining Materials

An Experimental Evaluation of the Weathering Effects on Mine Shaft Lining Materials

Centrifuge Modelling of the Collapse of Shaft Linings

Analysis of shaft lining stress state in anhydrite-rock salt transition zone

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