Chengguo Zhang
University of New South Wales
Coal miningGeologyEngineeringLongwall miningClassification of discontinuitiesComposite materialMining engineeringSubsidenceEnergy (signal processing)Geotechnical engineeringClosure (topology)Materials scienceDynamic loadingRoofOverburdenEnvironmental scienceRock mass classificationFracture (geology)CoalStructural engineeringGroundwaterStress (mechanics)Shear (geology)
67Publications
12H-index
410Citations
Publications 68
Newest
#1Faham Tahmasebinia (UNSW: University of New South Wales)H-Index: 9
#2Chengguo Zhang (UNSW: University of New South Wales)H-Index: 12
Last. Samad M.E. Sepasgozar (UNSW: University of New South Wales)H-Index: 16
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Abstract null null A rock and/or coal burst is an uncontrolled failure that releases a massive amount of kinetic energy, inducing excessive displacement of coal/rock mass. Combined support to controlling rock and/or coal dynamic failures is an essential part of the rock burst management. In the design of rock support, it is essential to consider not only the capacity of the individual elements but also their compatibility with each other and their interactions. This paper aimed to develop a nove...
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#1Changbin Wang (UNSW: University of New South Wales)H-Index: 1
#2Guangyao Si (UNSW: University of New South Wales)H-Index: 11
Last. Ismet Canbulat (UNSW: University of New South Wales)H-Index: 12
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Data integrity and reliability during seismic event detection are the main factors limiting the effectiveness of seismic monitoring systems in underground mines. As it is impossible for current seismic monitoring systems to record all mining-induced seismic events, the incomplete seismic dataset may cause significant bias during data analyses and interpretation processes. Evaluation of seismic data integrity in mine seismology and eliminate its impact on seismic analyses is a critical issue that...
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#1Changbin WangH-Index: 1
#2Guangyao Si (UNSW: University of New South Wales)H-Index: 11
Last. Ismet CanbulatH-Index: 12
view all 5 authors...
Abstract Coal bursts have emerged as the most critical mining hazard for underground coal mines around the world. Seismic monitoring and seismic clustering analysis are the cornerstones to develop an understanding of and to quantify coal burst hazards. The prerequisite to successfully detect seismic clustering behaviours is the accuracy of locating seismic events, which however can be a challenging task in underground coal mines. Therefore, the characteristics of location errors of seismic event...
2 CitationsSource
#1Chunchen Wei (UNSW: University of New South Wales)H-Index: 1
#2Chengguo Zhang (UNSW: University of New South Wales)H-Index: 12
Last. Ismet Canbulat (UNSW: University of New South Wales)H-Index: 12
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Abstract Coal burst induced by fault-slip in longwall mining can adversely influence underground mining activities. This paper analyses the source mechanisms of fault-slip behaviour using a numerical fast Lagrangian analysis of continua in three dimensions (FLAC3D) model. The fault was simulated by the build in zero-thickness interface elements. The post failure process of fault-slip was studied using the linear slip weakening law which was implemented in a user-defined FISH program. The numeric...
3 CitationsSource
#1Jason Emery (UNSW: University of New South Wales)H-Index: 3
#2Ismet Canbulat (UNSW: University of New South Wales)H-Index: 12
Last. Chengguo Zhang (UNSW: University of New South Wales)H-Index: 12
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Abstract Underground coal mining is inherently hazardous, with uncontrolled ground failure regarded as one of only several critical risks for multiple fatality events. Development, implementation and management of overarching systems and procedures for maintaining strata control is an important step to mitigating the impact of ground failure hazards at a mine site operational level. This paper summarised the typical pro-active ground control management system (PGCMS) implemented in various Austr...
6 CitationsSource
#1Qingyuan He (CUMT: China University of Mining and Technology)H-Index: 7
#2Yingchun Li (DUT: Dalian University of Technology)H-Index: 12
Last. Chengguo Zhang (UNSW: University of New South Wales)H-Index: 12
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Abstract Coal pillars are usually loaded under combined compression-shear stresses at underground coal mines. Their long-term stability is critical to the utilization of underground structures, such as underground reservoirs at coal mines. In this study, a modified rock property testing system was used to explore the mechanical properties of coal specimens under quasi-static combined compression-shear loading conditions. The acoustic emission technique was applied to investigating the microcrack...
5 CitationsSource
#1Faham TahmasebiniaH-Index: 9
#2Chengguo ZhangH-Index: 12
Last. Serkan SaydamH-Index: 14
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Coal burst occurrences are affected by a range of mining and geological factors. Excessive slipping between the strata layers may release a considerable amount of strain energy, which can be destructive. A competent strata is also more vulnerable to riveting a large amount of strain energy. If the stored energy in the rigid roof reaches a certain level, it will be released suddenly which can create a serious dynamic reaction leading to coal burst incidents. In this paper, a new damage model base...
3 CitationsSource
#1Gangwei FanH-Index: 4
#1Gangwei FanH-Index: 7
Last. Chengguo ZhangH-Index: 12
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The effect of underground coal mining on groundwater, ranging from minimal to severe depending on the mined-out panel size, is primarily associated with the change in ground hydraulic permeability. This paper presents a novel panel design method, taking consideration of reducing water loss during the mining operation, which is based on evaluating and ranking the impact of panel size on the hydraulic permeability of weakly cemented strata. The permeability test results of weakly cemented rock sam...
3 CitationsSource
#1Changbin Wang (UNSW: University of New South Wales)H-Index: 1
#2Anye Cao (CUMT: China University of Mining and Technology)H-Index: 13
Last. Ismet Canbulat (UNSW: University of New South Wales)H-Index: 12
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Mining-induced seismicity is one of the dynamic energy sources that can trigger coal burst. This paper presents a new methodology to assess coal burst risks under different loading conditions by examining seismic energy attenuation and fracture size. Two new indices are proposed: (1) Dynamic Load Index (DLI) quantifies the magnitude of dynamic loading induced by seismic events, based on the relationships between the seismic energy, peak particle velocity and dynamic stress; (2) dynamic–static lo...
8 CitationsSource
#2Ismet CanbulatH-Index: 12
Last. Kevin McDougallH-Index: 12
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Longwall mining is a major mining method to extract thick, flat-lying and extensive seams. Due to the nature of this mining method, the overlying strata move continuously downwards into goaf and as a result, surrounding rocks are distressed, deformed and fractured. In the near area above the mined coal seam, both vertical and horizontal fracturing networks are evident, however within the higher zones, bed separation and slippage are the dominant displacements. The enhanced cracks alter hydraulic...