To create cavities when dissolving rock salt, it is most expedient to supply the solvent through nozzles of a perforated pipe in form submerged jets. This article examines physical dissolution cavity with water from stationary nozzle diameter 0.004 m at two constant velocities cross-section. The efficiency dissolution, which has an almost cylindrical shape semi-cylindrical bottom, was analyzed ...

This paper compares classic (continuous) fatigue tests and carried out with time intervals of no stress in rock salt using a multifunctional testing machine acoustic emission equipment. The results show that have strong impact on the activity salt. In intervals, residual strain circles following an interval (α circles) is generally larger than before (β circles). insertion process accelerates a...

A novel VSP imaging method that only requires a local velocity model around the well is presented. This method is denoted as a ‘local migration’, where the modelbased forward propagation and backward propagation operators are computed using a local velocity model between the well and the the target body. The velocity model for the complex overburden and salt body are not needed, and the source-...

The Phoenix Mission was the first to land in the polar regions on Mars. The mission revealed three surprising results: (1) The surface at the landing site had a very low concentration of large size rocks, (2) The unexpectedly sticky nature of the soil prevented it initially from falling through one of the instrument’s screens as planned, (3) Perchlorate salt was found at a high concentration (~...