\begin{tabular}{m{4.5cm}||m{0.5cm}|m{0.5cm}|m{0.5cm}|m{0.5cm}|m{0.5cm}|m{0.5cm}}
\hline
     & $K_{\sigma_{11}}$ 
     & $K_{\sigma_{22}}$ 
     & $K_{\sigma_{33}}$ 
     & $K_{\sigma_{12}}$ 
     & $K_{\sigma_{13}}$ 
     & $K_{\sigma_{23}}$ \\
\hline
\hline
  Туннельная пора & 
  $\frac{1.01}{1.01}$ & 
  $\frac{1.37}{1.39}$ & 
  $\bf\frac{2.17}{2.12}$ &
  $\frac{1.08}{1.08}$ & 
  $\bf\frac{3.00}{2.06}$ & 
  $\frac{0.91}{0.90}$ \\
\hline
  Разрыв волокна основы & 
  $\frac{0.99}{0.99}$ & 
  $\frac{0.95}{0.95}$ & 
  $\frac{1.29}{1.28}$ &
  $\frac{0.91}{0.91}$ & 
  $\bf\frac{3.53}{2.40}$ & 
  $\frac{0.91}{0.91}$ \\
\hline
  Разрыв волокон основы и утка & 
  $\frac{0.98}{0.98}$ & 
  $\frac{1.00}{0.96}$ & 
  $\frac{0.94}{0.90}$ & 
  $\frac{0.99}{0.98}$ & 
  $\bf\frac{3.43}{2.43}$ & 
  $\frac{0.97}{0.92}$ \\
\hline
\end{tabular}