Improvement of Method of Design and Limit Calculation by the 1st Limit Stability Case. Proposing Metod of Calculation for Ultimate Limit Stability and Deep Limit Calculation of Pit. Graphical building the Chart of Statically limited stressing field inside triangular with vertical edge, Jet Grouting Coloumn Body , wich were generated with help(using) Modified Preliminary Method of Assuming from V.V. Sokolovskii, in case assuming Limit Stabilities wedqe with internal friction and cohesion and wedqe with internal friction without cohesion. As resalt of this sume there is Limit Stability of wedqe with low Strength(Stability) characteristics. Receiving Solution is the basement for Calculation of Possible Deep of Pit.
Keywords: gruntiest, jet grouting, strength characteristics, stress-strain state of the Foundation soil allowable stress field, the stability of the fence of the pit, plane strain, ultimate load, external load, approximate method