Геология и геофизика №8 2005

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MFP = , δ([ − [ ) δ(\ − \ ) δ(] − ] ) H−LωW A^_Fv ^[ \ ] ` ² dhhS^bgZlu ]_g_SZlhSgh]h dhglmSZ ω = πI ² pbdebq_FdZy qZFlhlZ δ ² ^_evlZ nmgdpby >bSZdZ , ² Zfieblm^Z lhdZ L ² fgbfZy _^bgbpZ HiS_^_ebf we_dlSbq_Fdh_ ihe_ ( ([ \ ]) MSZ\g_gby FZdF\_eeZ \ iSh\h^ys_c g_fZ]gblghc FS_^_ bf_xl \b^    ]^_ MFP = ^M[ FP \\ FP M] Fh^_S`Zs_c bFlhqgbd URWURW ( + N (ξ)( = − Lωµ MFP A^_Fv ξ([ \ ]) ² lhqdZ gZ[ex^_gby < d\ZabFlZpbhgZSghf FemqZ_ \hegh\h_ qbFeh N (ξ) = √ E =   −Lωµ σ(ξ) LZg]_gpbZevgu_ dhfihg_glu we_dlSbq_Fdh]h ihey g_iS_Su\gu gZ \F_[ ]SZgbpZ[ >(τ@]E = ]M D\Z^SZlgu_ Fdh[db hagZqZxl FdZqhd ihey gZ ]SZgbp_ >ey we_dlSbq_Fdh]h ihey lZd`_ \uihegy_lFy mFeh\b_ baemq_gby gZ [_Fdhg_qghFlb  ([ \ ] MSZ\g_gb_ \f_Fl_ F mFeh\byfb b  → ξ → ∞ hiS_^_eyxl dSZ_\mx aZ^Zqm ^ey we_dlSbq_Fdh]h ihey IS_^iheh`bf qlh lS_[f_Sgh_ SZFiS_^_e_gb_ we_dlShiSh\h^ghFlb fh`gh iS_^FlZ\blv \ \b^_ Fmffu σ(ξ) = σE (]) + δσ(ξ) ]^_ σE (]) ² SZFiS_^_e_gb_ we_dlShiSh\h^ghFlb aZ\bFys__ lhevdh hl dhhS^bgZlu ] δσ(ξ) ² hlghFbl_ev gh fZeu_ lS_[f_Sgu_ \hafms_gby we_dlShiSh\h^ghFlb PD[ _δσ(ξ)_ σE (]) Fh^_ev F SZFiS_^_e_gb_f we_dlShiSh\h^ghFlb σE(]) \ ^Zevg_cr_f [m^_f gZau\Zlv S_n_S_glghc Z Fhhl\_lFl\mxsb_ ihey ² ghSfZevgufb We_dlSbq_Fdh_ ihe_ lZd`_ iS_^FlZ\bf dZd Fmi_Sihabpbx ghSfZevghc b \hafms_gghc FhFlZ\eyxsb[ ( = (E + δ( ]^_ (E ² ghSfZevgh_ we_dlSbq_Fdh_ ihe_ Z δ( ² _]h \hafms_gb_ Ihe_ (E m^h\e_l\hSy_l Fe_^mxs_fm mSZ\g_gbx URWURW (E + NE (])(E = − Lωµ MFP A^_Fv NE (]) = √−Lωµ σE (]) ² \hegh\h_ qbFeh ^ey S_n_S_glghc fh^_eb Ih^FlZ\eyy ihemqbf  URWURW ((E + δ() + (NE (]) + δN (ξ)) ((E + δ() = − Lωµ MFP ]^_ δN (ξ) ² \hafms_gb_ d\Z^SZlZ \hegh\h]h qbFeZ F\yaZggh_ F hlghFbl_evgh g_[hevrbfb iShFlSZg Fl\_ggufb \ZSbZpbyfb we_dlShiSh\h^ghFlb \ g_dhlhShc h[eZFlb 9 Ba ihemqZ_f mSZ\g_gb_ gZ \hafms_ggmx FhFlZ\eyxsmx δ( URWURW δ( + NE (]) δ( = − δN (ξ) ((E + δ() <_dlhSgh_ mSZ\g_gb_ fh`gh S_rblv bFihevamy nmgdpbb =SbgZ IhFe_^gb_ y\eyxlFy S_r_gbyfb lh]h `_ FZfh]h mSZ\g_gby gh F ^Sm]hc iSZ\hc qZFlvx URWURW *( + NE (]) *( = δ([ − [ ) δ(\ − \ ) δ(] − ] ) L[ \ ] A^_Fv L[ L\ L] ² hSlu h[s_c ^_dZSlh\hc FbFl_fu dhhS^bgZl \ mSZ\g_gb_ URW + = γ( + MFP URW ( = Lωµ + we_dlSbq_Fdh]h b fZ]gblgh]h ihe_c g_ SZ\gu gmex Ba FbFl_fu FP` b γ = (σ − Lωε) ² dhfie_dFgZy we_dlShiSh\h^ghFlv Hlf_lbf qlh \F_ dhfihg_glu fh`gh ihemqblv mSZ\g_gb_ =_evf]hevpZ ^ey we_dlSbq_Fdh]h ihey ( \ h[eZFlb

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