|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Investigations into the corrosive environments contributing to premature failure of Australian coal mine rock bolts显示文摘University of New South Wales(UNSW Australia) had been involved in the study of premature failure of rock bolts in Australia coal mines from the initial identification of the problem in 1999. Rock bolt steel changes over the last decade appear to have not reduced the incidence of failures. A broadened UNSW research project funded by the Australian Research Council(ARC) and Industry has targeted finding the environmental causes through extensive field and laboratory experiments. This paper describes the field studies conducted in underground coal mines,in particular attempts to measure the contribution to corrosion from groundwater,mineralogy and microbial activity. Various underground survey techniques were used to determine the extent of broken bolts,with the presence of both stress corrosion cracking(SCC) and localized deep pitting making no single technique suitable on their own.Groundwater found dripping from bolts across various coalfields in Australia were found to be not aggressive and known groundwater corrosivity classification systems did not correlate to where broken bolts were found. In-hole coupon bolts placed in roof strata containing claystone bands confirmed the clay as being a major contributor to corrosion. Microbes capable of contributing to steel corrosion were found to be present in groundwater,and culturing of the microbes taken from in-situ coupon bolts proved that the bacteria was present on the bolt surface. An ‘in-hole bolt corrosion coupon' development by the project may have multiple benefits of (1) helping quantify newly developed corrosivity classification systems,(2) providing an in-situ ground support corrosion monitoring tool,and (3) for testing possible corrosion protection solutions. | Craig P. Serkan S. Hagan P. Hebblewhite B. Vandermaat D. Crosky A. Elias E. | 2016 | International Journal of Mining Science and Technology2016，26，1： | 12 |
| 2 | A review of the geomechanics aspects of a double fatality coal burst at Austar Colliery in NSW,Australia in April 2014显示文摘A coal burst occurred on 15 April, 2014 at the Austar Coal Mine, located west of Newcastle, NSW,Australia. The burst resulted in fatal injuries to two men working as part of the mining crew at the development face. At the time, a continuous miner was being used to mine a longwall development gate road through heavily structured coal, at a depth of approximately 550 m. A number of pre-cursor bumps had occurred on previous shifts, emanating from the coal ribs of the roadway, in proximity to the coal face.This paper reviews the geological, geotechnical and mining conditions and circumstances leading up to the coal burst event; and presents and discusses the available evidence and possible interpretations relating to the geomechanical behaviour mechanisms that may have been critical factors in this incident. The paper also discusses some key technical and operational considerations of ground support systems and mining practices and strategies needed for operating in such conditions in the future. | Hebblewhite Bruce Calvin Jim | 2017 | International Journal of Mining Science and Technology2017，27，1： | 11 |
| 3 | Assessment of energy release mechanisms contributing to coal burst显示文摘Coal burst is a dynamic release of energy within the rock(or coal) mass leading to high velocity expulsion of the broken/failed material into mine openings. This phenomenon has been recognised as one of the most catastrophic failures associated with the coal mining industry, which can often lead to injuries and fatalities of miners as well as significant production losses. This paper aims to examine the mechanisms contributing to coal burst occurrence, with an emphasis on the energy release concept. In this study, a numerical modelling study has been conducted to evaluate the roles and contributions of difference energy components. The energy analysis presented in this paper can help to improve the understanding of energy release mechanisms especially under Australian conditions. | Zhang Chengguo Canbulat Ismet Tahmasebinia Faham Hebblewhite Bruce | 2017 | International Journal of Mining Science and Technology2017，27，1： | 7 |
| 4 | Fracturing,caving propagation and influence of mining on groundwater above longwall panels–a review of predictive models显示文摘Historically there have been a number of different hypotheses and empirical models developed in an attempt to describe the nature of fracturing above longwall panels in underground coal mining.The motivation for suchmodels varies,ranging fromunderstanding the impact ofmining on surface subsidence,to back-analysis of caving behaviour in the immediate roof behind the longwall face.One of the most critical motivating factors that is taking on increased importance in many coalfields,is the need for better understanding,and hence prediction of the impact of mining on overlying strata,particularly strata units acting as aquifers for different groundwater horizons.This paper reviews some of the major prediction models in the context of observed behaviour of strata displacement and fracturing above longwall panels in the southern coalfields of New South Wales,south of Sydney.The paper discusses the parameter often referred to as'height of fracturing'in terms of the critical parameters that influence it,and the relevance and appropriateness of this terminology in the context of overlying sub-surface subsidence and groundwater impact.The paper proposes an alternative terminology for this parameter that better reflects what it is and how it is used.The paper also addresses the potential role of major bedding shear planes mobilised by mining and their potential influence on overlying subsidence and groundwater interference. | Bruce Hebblewhite | 2020 | International Journal of Mining Science and Technology2020，30，1： | 7 |
| 5 | Discussions on rockburst and dynamic ground support in deep mines显示文摘The paper is a summary of discussions on four topics in rockburst and dynamic ground support.Topic 1 is the mechanisms of rockburst.Rockburst events are classified into two categories in accordance with the triggering mechanisms,i.e.strain burst and fault-slip burst.Strain burst occurs on rock surfaces when the tangential stress exceeds the rock strength in hard and brittle rocks.Fault-slip burst is triggered by fault-slip induced seismicity.Topic 2 is prediction and forecasting of rockburst events.Prediction for a rockburst event must tell the location,timing and magnitude of the event.Forecasting could simply foresee the probability of some of the three parameters.It is extremely challenging to predict rockbursts and large seismic events with current knowledge and technologies,but forecasting is possible,for example the possible locations of strain burst in an underground opening.At present,the approach using seismic monitoring and numerical modelling is a promising forecasting method.Topic 3 is preconditioning methods.The current preconditioning methods are blasting,relief-hole drilling and hydrofracturing.Defusing fault-slip seismicity is difficult and challenging but has been achieved.In very deep locations(>3000 m),the fracturing could extend from the excavation face to a deep location ahead of the face and therefore preconditioning is usually not required.Topic 4 is dynamic ground support against rockburst.Dynamic ground support requires that the support system be strong enough to sustain the momentum of the ejecting rock on one hand and tough enough on the other hand to absorb the strain and seismic energies released from the rock mass.The current dynamic support systems in underground mining are composed of yielding tendons and flexible surface retaining elements like mesh/screen and straps.Yielding props and engineered timber props are also used for dynamic support. | Charlie C.Li Peter Mikula Brad Simser Bruce Hebblewhite William Joughin Xiaowei Feng Nuwen Xu | 2019 | Journal of Rock Mechanics and Geotechnical Engineering2019，11，5： | 5 |
| 6 | Estimating abundance and density of Amur tigers along the Sino- Russian border显示文摘As an apex predator the Amur tiger(Panthera tigris altaica)could play a pivotal role in maintaining the integrity of forest ecosystems in Northeast Asia.Due to habitat loss and harvest over the past century,tigers rapidly declined in China and are now restricted to the Russian Far East and bordering habitat in nearby China.To facilitate restoration of the tiger in its historical range,reliable estimates of population size are essential to assess effectiveness of conservation interventions.Here we used camera trap data collected in Hunchun National Nature Reserve from April to June 2013 and 2014 to estimate tiger density and abundance using both maximum likelihood and Bayesian spatially explicit capture-recapture(SECR)methods.A minimum of 8 individuals were detected in both sample periods and the documentation of marking behavior and reproduction suggests the presence of a resident population.Using Bayesian SECR modeling within the 11400 km2 state space,density estimates were 0.33 and 0.40 individuals/100 km^(2) in 2013 and 2014,respectively,corresponding to an estimated abundance of 38 and 45 animals for this transboundary Sino-Russian population.In a maximum likelihood framework,we estimated densities of 0.30 and 0.24 individuals/100 km^(2) corresponding to abundances of 34 and 27,in 2013 and 2014,respectively.These density estimates are comparable to other published estimates for resident Amur tiger populations in the Russian Far East.This study reveals promising signs of tiger recovery in Northeast China,and demonstrates the importance of connectivity between the Russian and Chinese populations for recovering tigers in Northeast China. | Wenhong XIAO Limin FENG Pu MOU Dale GMIQUELLE Mark HEBBLEWHITE Joshua FGOLDBERG Hugh SROBINSON Xiaodan ZHAO Bo ZHOU Tianming WANG Jianping GE | 2016 | Integrative Zoology2016，11，4： | 4 |
| 7 | A semi-quantitative coal burst risk classification system显示文摘Safety is the highest priority in the mining industry as underground mining in particular poses high safety risks to its workers. In underground coal mines, coal bursts are one of the most catastrophic hazards, which involves sudden and violent dynamic coal mass failure with rapid ejection of the broken material into the mine workings. Despite decades of research, the contributing mechanisms of coal bursts are still not completely understood. Hence, it remains challenging to forecast coal bursts and quantify their likelihood of occurrence. However, a range of geological and geotechnical factors are associated with coal bursts and can increase the coal burst proneness. This paper introduces a semi-quantitative coal burst risk classification system, namely, BurstRisk. Based on back-analysis of case histories from Australia, China and the United States, BurstRisk classifies the coal burst risk into three categories:low, medium and high risk. In addition, it allows mining engineers to modify the weighting of the selected factors based on specific conditions. The risk classification charts introduced are for both longwall retreat and development sections of long-wall mining operations. This paper also provides a set of risk management strategies and control measures for effective coal burst mitigation. | Onur Vardar Chengguo Zhang Ismet Canbulat Bruce Hebblewhite | 2018 | International Journal of Mining Science and Technology2018，28，5： | 3 |
| 8 | Coal mine roof rating(CMRR),rock mass rating(RMR)and strata control:Carborough Downs Mine,Bowen Basin,Australia显示文摘The rock mass rating(RMR)has been used across the geotechnical industry for half a century.In contrast,the coal mine roof rating(CMRR)was specifically introduced to underground coal mines two decades ago to link geological characterization with geotechnical risk mitigation.The premise of CMRR is that strength properties of mine roof rock are influenced by defects typical of coal measures stratigraphy.The CMRR has been used in longwall pillar design,roof support methods,and evaluation of extended cuts,but is rarely evaluated.Here,the RMR and CMRR are applied to a longwall coal mine.Roof rock mass classifications were undertaken at 67 locations across the mine.Both classifications showed marked spatial variability in terms of roof conditions.Normal and reverse faulting occur across the mine,and while no clear relationships exist between rock mass character and faulting,a central graben zone showed heterogeneous rock mass properties,and divergence between CMRR and RMR.Overall,the CMRR data fell within the broad envelope of results reported for extended cuts at Australian and U.S.coal mines.The corollary is that the CMRR is useful,and should not be used in isolation,but rather as a component of a strata control programme. | Martin Brook Bruce Hebblewhite Rudrajit Mitra | 2020 | International Journal of Mining Science and Technology2020，30，2： | 3 |
| 9 | Numerical investigation of the effect of joint geometrical parameters on the mechanical properties of a non-persistent jointed rock mass under uniaxial compression显示文摘 | M. Bahaaddini G. Sharrock B.K. Hebblewhite | 2013 | Computers and Geotechnics2013，，： | 2 |
| 10 | Analytical solutions for mining induced horizontal stress in floors of coal mining panels 显示文摘 | Zhao Chongbin Hebblewhite B K Galvin J M | 2000 | Computer Methods in Applied Mechanics and Engineering2000，184，1： | 1 |
| 11 | Australian experience in long-hole in-seam drilling technology for seam gas drainage显示文摘 | Hebblewhite B K Richmond A J Allan J | 1982 | Symposia Series-Australasian Institute of Mining and Metallurgy1982，16，2： | 1 |
| 12 | Analysis ofguidelines for basal-bolus insulin dosing: basal insulin,correctionfactor, and carbohydrate-to-insulin ratio显示文摘 | Davidson PC Hebblewhite HR Steed RD | 2008 | Endocr Pract2008，14，： | 1 |
| 13 | Geomechanical behaviour oflaminated, weak coal mine roof strata and the implications for aground reinforcement strategy显示文摘 | HEBBLEWHITE B K LU T | 2004 | International Journal of RockMechanics & Mining Sciences2004，41，： | 1 |
| 14 | Numerical investigation of the effect of joint geometrical parameters on the mechanical properties of a non-persistent jointed rock mass under uniaxial compression显示文摘 | BAHAADDINI M SHARROCK G HEBBLEWHITE B K | 2013 | Computers and Geotechnics2013，49，： | 1 |
| 15 | A new capabilityassessment criterion for long-wall top coal caving显示文摘 | VAKJLI A HEBBLEWHITE B K | 2010 | International Journal of Rock Mechanics & Mining Sci-ences2010，47，8： | 1 |
| 16 | Numerical in- vestigation of the effect of joint geometrical parameters on the mechanical properties of a non-persistent jointed rock mass under uniaxial compression 显示文摘 | Bahaaddini M Sharrock G Hebblewhite B | 2013 | Computers and Geotechnics2013，49，： | 1 |
| 17 | Numerical direct shear tests to model the shear behaviour of rock joints显示文摘 | Bahaaddini M Sharrock G Hebblewhite B K | 2013 | Computers and Geoteehnies2013，51，： | 1 |
| 18 | Numerical direct shear tests to model the shear behaviour of rock joints显示文摘 | M. Bahaaddini G. Sharrock B.K. Hebblewhite | 2013 | Computers and Geotechnics2013，，： | 1 |
| 19 | Numerical investigation of the effect of joint geometrical parameters on the mechanical properties of a non-persistent jointed rock mass under uniaxial compression显示文摘 | BAHAADDINI M SHARROCK HEBBLEWHITE B K | 2013 | Computers and Geoteehnics2013，49，： | 1 |
| 20 | Numerical direct shear tests to model the shear behaviour of rock joints显示文摘 | Bahaaddini M Sharrock G Hebblewhite B K | 2013 | Computers and Geotechnics2013，51，： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员