Sachno I. A Geomechanical justification of parameters road bolting systems for maintaining roadway stability .

Object: process of displacement of a massive fixed road bolts. The purpose: a geomechanical justification of the rational circuits of an arrangement road bolt of cores at fix of rocks environmental roadways, for maintenance of their stability. Methods of researches: mine tool supervision for process of displacement of rocks with the help deep and planimetric control points; laboratory researches on physical models and mathematical modeling with the help of a software package Ansys; processing of results of researches by methods of mathematical statistics. Feature of development of a zone of the destroyed rocks around of roadway fixed road bolting fastening for the first time is experimentally established which consists that the destruction begins outside external border fixed road bolting fastening layered massive, and develops deep into of it. For the first time is established, that the fix of road bolting with orientation provides them on displaced along an axis of roadway to the large diagonals of acube preservation of carrying ability and stability rock-road bolting of a constraction at relative displacement of a contour of roadway up to 10 % from depth fix road bolts. Increase of density fix road bolts layered rock massive more than 1,6 bolt/m2 results in decrease of carrying ability created rock-road bolting of a constraction. The results are introduced by development of the recommendations on account of parameters road bolting fastening on mine "Dobropolskaya". Sphere of use: the main enterprises, scientific researches, educational process.