Calculation of parameters of anchor-sprayed concrete support vertical mining operations

The issues of assessing the stability and fastening horizontal vertical mine workings, considering various mining geological conditions, are relevant. study scientific papers related to this problem has shown that a fairly large number works devoted developing methods for calculating applying anchor-sprayed concrete support walls workings. At same time, there is no design model using such trunks In proposed work, method in previous work authors [1] used calculate parameters anchor To develop methodology thickness sprayed coating, quadrangular plate was adopted, theory elasticity were applied, similar boiler reinforced with bolts, first solved by academician A.S.Leibenzon. As result, new formula determining shafts proposed, taking into account steps installing anchors horizontally vertically influence lateral rebound coefficient under action gravitational stress field. strength limit on slice interacting coating solved. An expression obtained minimum value shear applied at depth rocks density; derived allows upper permissible distances between belts vertically, different from previously known formulas it takes effects radius zone destroyed rocks, ultimate concrete. addition, its structure, factor angle inclination horizon most dangerous sliding plane. Based results obtained, can be concluded technique been developed calculation combined small shafts, optimize values create corresponding mathematical model.