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10篇 您的检索式:作者名="Simser"
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1Discussions 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 2019Journal of Rock Mechanics and Geotechnical Engineering2019,11,5:5
2Isolation of aspotted fever group rickettsia, Rickettsia peacockii, in aRocky Mountain wood tick, Dermacentor andersoni, cellline显示文摘Simser J A Palmer A T Munderloh U G 2001Appl Environ Microbiol2001,67,2:1
3Isolation of a spotted fever group rickettsia, Richettsia peacockii, in a Rocky Mountain wood tick, Dermacentor andersoni, cell line显示文摘Simser JA Palmer AT Munderloh UG 2001Appl Environ Microb2001,67,:1
4Immune responsive lysozymes from hemocytes of the American dog tick,Dermacentor variabilis and an embryonic cell line of the Rocky Mountain wood tick,D-andersoni显示文摘Simser J A Macaluso K R Mulenga A 0,,12:1
5Use of microseismic source parameters for rockburst hazard assessment显示文摘Alcott J M Kaiser P K Simser B P 1998Pure and Applied Geophysics1998,153,:1
6Dynamics of Rickettsia-tick interactions: identification and characterization of differentially expressed mRNAs in uninfected and infected Dermacentor variabilis显示文摘Mulenga A Macaluso KR Simser JA 2003Insect Mol Biol2003,12,2:1
7Immuneresponsive lysozymes fYom hemocytes of the American dog tick 显示文摘SIMSER J A MULENGA A MACALUS O 2004Insect Biochemistry and Molecular Biology2004,34,:1
8Seismic source parameters used to monitor rockmass response at Brunswick mine显示文摘Simser B Falmague V 2004CIM Bulletin2004,,5:1
9An immune responsive factor D-like serine proteinase homologue identified from the American dog tick显示文摘Variabilis D Simser J A Mulenga A 2004Insect Mol Biol2004,13,1:1
10The performance of Brunswick Mine's roekburst support system during a severe seismic episode显示文摘Simser B Joughin W C Ortle P P W D 2002Journal of the South African Institute of Mining and Metallurgy2002,102,56:1
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