ORCID Profile
0000-0003-4011-2771
Does something not look right? The information on this page has been harvested from data sources that may not be up to date. We continue to work with information providers to improve coverage and quality. To report an issue, use the Feedback Form.
In Research Link Australia (RLA), "Research Topics" refer to ANZSRC FOR and SEO codes. These topics are either sourced from ANZSRC FOR and SEO codes listed in researchers' related grants or generated by a large language model (LLM) based on their publications.
Geomechanics and Resources Geotechnical Engineering | Resources Engineering and Extractive Metallurgy | Mining Engineering | Metals and Alloy Materials
Coal Mining and Extraction | Workplace Safety | Mining and Extraction of Precious (Noble) Metal Ores |
Publisher: Springer International Publishing
Date: 2013
Publisher: Springer Science and Business Media LLC
Date: 29-07-2016
Publisher: Springer Science and Business Media LLC
Date: 12-2013
Publisher: Hindawi Limited
Date: 2018
DOI: 10.1155/2018/4751612
Abstract: To investigate the mechanical properties and energy evolution characteristics of sandstone depending on the water contents and confining pressure, the uniaxial and triaxial tests were conducted. The test results show that the strain energy was stored in the sandstone s les at the prepeak stage, and that is suddenly released when the failure occurred, and energy dissipation is sharply increased at the postpeak stage. The damage and energy dissipation characteristics of the s les are observed clearly under the stepwise loading and unloading process. The critical strain energy and energy dissipation show a clear exponential relationship. The critical elastic energy decreases linearly as the water content increases. As the confining pressure increases, the critical elastic energy of the s les transforms from linear to exponential. The concept of energy enhancement factor is proposed to characterize the strengthening effect induced by the confining pressure on the energy storage capacity of the rock s les. The energy evolution of the sandstone s les is more sensitive to the confining pressure than that of the water content.
Publisher: Informa UK Limited
Date: 28-03-2016
Publisher: Elsevier BV
Date: 12-2015
Publisher: Elsevier BV
Date: 06-2018
Publisher: Trans Tech Publications, Ltd.
Date: 11-2012
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMM.226-228.1789
Abstract: It is the key to guide rock-breaking design and engineering practice for how to obtain a reasonable test indicator to assess the cuttability of the rock. Some sandstone s les were tested by using the linear rock cutting machine in the school of mining engineering, University of New South Wales (UNSW), Australia. The curves characteristics for the weight percent of the broken debris with the mesh size distribution were obtained through the screening statistics. Furthermore, the fractal dimension of the specimen broken debris was derived through theoretical calculations and statistical analysis. The results showed that the rock cutting fragmentation is of significant fractal features under the mechanical shock loads. The broken debris fractal dimension of the structural integrity specimens is bigger, the range of the fractal dimension is smaller and the broken debris size distribution is more even than that of the poor structural integrity specimens. The fractal dimension is the ideal test indicator to assess and analysis the rock-breaking degree.
Publisher: American Society of Civil Engineers (ASCE)
Date: 04-2016
Publisher: Elsevier BV
Date: 02-2021
Publisher: Elsevier BV
Date: 10-2014
Publisher: Hindawi Limited
Date: 10-2018
DOI: 10.1155/2018/2419659
Abstract: Due to the periodicity of mine pressure, it can easily lead to a wide-range damage of the overburden rock under shallow coal mining conditions, and the falling of the overburden rock is usually a serious threat to the mining safety. Based on the monitoring data of mine pressure in a typical shallow coal mine in northern China, the mechanical model of the surrounding rock in the mining field was built and the identification indicators of the pressure arch after coal mining was defined. Then, the arching mechanism, the stress distribution characteristics in different positions, and the bearing capacity of the pressure arch were analysed, and the evolution characteristics of the pressure arch under shallow horizontal coal mining were verified by numerical simulation and physical experiment. Results show that there is a core-bearing zone in the pressure arch, and the width of the core zone determines the bearing capacity of the pressure arch. The evolution of the pressure arch affects the formation and development of the caving arch of the loose zone in the mining field. The conclusions obtained in the study are of important theoretical value to direct the similar engineering practice.
Publisher: Elsevier BV
Date: 10-2018
Publisher: American Concrete Institute
Date: 12-2015
DOI: 10.14359/51687769
Publisher: Elsevier BV
Date: 04-2016
Publisher: International Hellenic University
Date: 2017
Publisher: ASTM International
Date: 02-03-2018
DOI: 10.1520/GTJ20170139
Publisher: Publicaciones DYNA
Date: 2017
DOI: 10.6036/8325
Publisher: Springer Science and Business Media LLC
Date: 24-08-2014
Publisher: ASTM International
Date: 28-01-2016
DOI: 10.1520/GTJ20150096
Publisher: Elsevier BV
Date: 09-2017
Publisher: Elsevier BV
Date: 03-2016
Publisher: Elsevier BV
Date: 03-2018
Publisher: Elsevier BV
Date: 03-2018
Publisher: ASTM International
Date: 22-06-2015
DOI: 10.1520/GTJ20140238
Publisher: Mechanical Engineering Faculty in Slavonski Brod
Date: 06-2018
Publisher: Elsevier BV
Date: 10-2013
Publisher: Elsevier BV
Date: 06-2016
Publisher: Elsevier BV
Date: 09-2017
Publisher: American Society of Civil Engineers (ASCE)
Date: 02-2016
Publisher: Springer Science and Business Media LLC
Date: 14-03-2019
Publisher: Elsevier BV
Date: 2016
Publisher: American Society of Civil Engineers (ASCE)
Date: 03-2018
Publisher: Springer Science and Business Media LLC
Date: 26-04-2018
Publisher: Hindawi Limited
Date: 2014
DOI: 10.1155/2014/950870
Abstract: Under the concentrated loading and the uniform loading, the tests on the brittle fracture and the hinged arching until the rock-arch instability of the sandstone plate were conducted using self-developed loading device, and the sensitivity of influent factors on the rock-arch failure was analyzed by numerical test based on the particle flow code (PFC). The results showed that sandstone plate instability presented four phases: small deformation elastic stage, brittle fracture arching stage, rock-arch bearing stage, and rock-arch instability stage. Under the uniform loading, the maximum vertical force of the rock-arch instability was much higher than that under the concentrated loading condition, but the maximum lateral force was almost the same. The number of acoustic emission (AE) and its positioning results of the sandstone plate showed that the extent of the plate damage under the uniform loading was higher than that under the concentrated loading condition. The friction coefficient effect, size effect, loading rate effect, and the initial horizontal force effect on the rock-arch instability were analyzed by the PFC 3D numerical experiment.
Publisher: Elsevier BV
Date: 07-2019
Publisher: World Scientific Pub Co Pte Ltd
Date: 04-2019
DOI: 10.1142/S1758825119500303
Abstract: Under the shallow coal mining condition and based on the cracking and movement rules of the roof in different mining stages, the mechanical models of symmetrical pressure-arch, stepped pressure-arch, rotating-squeezed pressure-arch in the mining field were established. Then, the instability criterion of each pressure-arch structure was derived. Through the similarity material experiment and numerical simulation, the evolution characteristics of the composite pressure-arches in the near- and far-field were revealed. Results show that the stepped pressure-arch in broken blocks of the basic roof was formed when the horizontal principal stress was greater than the in-situ stress. The broken blocks’ sliding could induce roof cutting off and strong weighting load. The structural characteristics of the overlying strata were determined by the thickness of the bedrock. The upper broken rocks formed a symmetrical pressure-arch in the near- and a far-field pressure-arch formed in the mining field. The median periodic broken rocks formed the rotating-squeezed pressure-arch, bearing the load of the loose layers and protecting the mining panel. After all bedrocks breaking, the latter arch foot of the far-field pressure-arch was transferred to the compacted caving zone. This study can provide a theoretical reference for the similar mining engineering.
Publisher: Elsevier BV
Date: 2019
Publisher: Elsevier BV
Date: 12-2018
Publisher: Mechanical Engineering Faculty in Slavonski Brod
Date: 06-2016
Publisher: Trans Tech Publications, Ltd.
Date: 09-2013
DOI: 10.4028/WWW.SCIENTIFIC.NET/AMM.405-408.1115
Abstract: This paper discusses the development of acoustic emission tomography to identify structural discontinuities in concrete. An algorithm was developed to reconstruct velocity tomographs of the interior of the material. Both theoretical analysis and experimental data were used to determine best sensor array geometry. Experiments on a concrete block with artificial fracture indicate that the technique can be used to identify structural discontinuities.
Publisher: Hindawi Limited
Date: 16-09-2018
DOI: 10.1155/2018/6817059
Abstract: To reveal the performance of the stepped subsidence and the strong roof weighting during shallow coal mining, taking the fully mechanized mining face with large mining height in the Shendong mining area in China as the engineering background, theoretical analysis and numerical simulation were used to analyze the pressure-arching effect of the hanging roof blocks. Three typical pressure-arch models of the roof structure were proposed, such as the symmetrical pressure-arch of two key blocks, the step pressure-arch of multiple key blocks, and the rotative pressure-arch of multiple key blocks. Results indicate that the horizontal stress displays a nonlinear distribution at the abutments of the symmetrical pressure-arch, and there is a linear distribution of horizontal stress with a higher peak value at the midspan of the pressure-arch. The high horizontal stress at the arch abutment is necessary to form the rotative pressure-arch of multiple key blocks. The horizontal stress is relatively less at the arch abutment of the step pressure-arch structure. The main key block is easier to slide in this structure as the boundary horizontal stresses display the nonlinear distribution. The results are of instructive significance for roof weighting forecast and strata control during shallow horizontal mining for a thick coal seam.
Publisher: Elsevier BV
Date: 09-2013
Publisher: American Society of Civil Engineers (ASCE)
Date: 02-2017
Start Date: 2015
End Date: 2018
Funder: Australian Research Council
View Funded ActivityStart Date: 2015
End Date: 2017
Funder: Australian Coal Association Research Program
View Funded ActivityStart Date: 2018
End Date: 2020
Funder: Australian Coal Association Research Program
View Funded ActivityStart Date: 2010
End Date: 2013
Funder: Australian Research Council
View Funded ActivityStart Date: 2013
End Date: 2014
Funder: Australian Coal Association Research Program
View Funded ActivityStart Date: 04-2015
End Date: 12-2018
Amount: $210,000.00
Funder: Australian Research Council
View Funded ActivityStart Date: 06-2011
End Date: 06-2014
Amount: $270,000.00
Funder: Australian Research Council
View Funded Activity