Задача id10698
The borehole is filled with a clay solution with a density Pр = 1.4•103 kg/m3. Determine the z coordinate of the cross section, where stress [s] = 0. The steel drill rod has a length L = 800 m, internal diameter d = 156 mm, pipe wall thickness d = 7 mm, Pst = 7.8•103 kg/m3 (rice. ).
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