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 Wysłany: Wto 23:42, 09 Lis 2010 Temat postu: ghd stijltang Rock - the instability of fluid syst |
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Rock - the instability of fluid systems
Events. According to the different coal softening of the solid state, with different pore step gas pressure,[link widoczny dla zalogowanych], the vertical stress values of 15 test program,[link widoczny dla zalogowanych], the results shown in Table 1. Data in Table 1 clearly show that: the rock with pore fluid pressure system with the pore fluid increases, the system non-linear increase in the degree of instability, but also show that the organic softening of coal and rock solid state, the role of load on instability of the system. The conclusions of Shanxi Mining Institute 136】 Volume 1 are well explained the phenomena of coal mine gas outburst and substance. Thus proving the correctness of the proposed theory and universal applicability. Through theoretical study and numerical experiments, we proposed to have the danger of coal seam gas outburst application proposals are the following two points: a. Coal gas outburst is the physical nature of unstable rock conditions and the result of the role of gas. Therefore, the engineering control of coal gas outburst from the impact of changes in orientation, lower gas pressure to proceed. In general, gas drainage less than 1. OMPa can. b. Gas outburst from a sufficient condition for change to proceed, should try to reduce the stress concentration factor and rock stress, improve the strength of coal, are very positive spin engineering measures. Almost all system unstable rock mass are accompanied by the role of fluid dry holes. Instability of the system as a coal and rock work deeper level, this is only a rough theoretical framework is more research, more detailed work has to be later. This equation is based on compressible fluid (gas) is given, the case of incompressible fluid, just to simplify the equation, the other is completely applicable. For the solid-liquid phase medium stretch has to be to continue to study the situation. References 1 waiting to shine. Causes of re-analysis of rock burst and intensity of the points discussed. Third National Conference Selected Papers of rock dynamics,[link widoczny dla zalogowanych], Wuhan: Wuhan University of Surveying and Mapping Press, 1992.11.2 Li Shiping. Rock simple tutorial. Di, China University of Mining State Press. Chapter 19 843 Dream Tao. Burst instability theory and numerical simulation. Rock Mechanics and Engineering, 1987 (3) 4 with springs. Fault zone characteristics and seismic boat leukomalacia non-stable model. Seismology. 1984, (6). 25 Zhao Yang up. Media Theory and Application of a gas coupling. PhD thesis, Tongji University, Hong Lian, etc. Section 1992.69. Dry hole under pressure of the media law of effective stress. Northern Rock Mechanics Engineering Conference Proceedings, Science Press. 199111: l39 ~ 1527 Jin Zhong stuffing and so on. With mechanical properties of gas media,[link widoczny dla zalogowanych], Rock Mechanics and Engineering. 1990 (3) 8 ROCK MECHANICS and so on. Kong Xiang pressure on the media impact of deformation. Shanxi Mining Institute. 1990,8 (4) 9 liters Zhao Yang Qian. Instability of rock units of the system load {hit. Selected papers from the third session of rock dynamics. Wu catch,[link widoczny dla zalogowanych], Surveying and Mapping, Wuhan University of Technology Press, 1992.11 2 Zhao Yang promotion: rock the instability of a fluid system 137Thelost-stabilitystudyontherockmass-fluidsystemZhaoYangsheng; SongXuanmin; KangTianhe (D.., Min.Enginee ~ ng) AbstractBasedonthediscussiononporefluideffects, thepaperhasproponedthelost-stabilitytheoriesofrock12xasssystemcontainingporefluid, whichhastwoparts-thenonlinearsolid-fluidcoupledequationsandunsteadydiseriminants. Accordingtothem, theauthorshaveproponedthenumericalsolutionmethod. andstudiedonallengineeringapplicationaspects. ThisresearchisthefurtherworkwiththerockI'D_assunstabilitystudy. KEYWORDSrockmas Gu a fluidsystem} unstability} mathematicalmodel; numericalmethod
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