Mokrienko V. Justification of protection method parameters of mine roadways by using rigid constructions with compensating cavities

The object of study: the stress-strain state of the rocks surrounding the security structure. Objective: geomechanical rationale of the process parameters of the workings rigid structures combined compensation cavities. Methods: based research is a comprehensive approach that includes the analysis and synthesis of scientific literature on the issue of preserving the stability of excavation excavations, laboratory, analytical modeling, and industrial test method workings of rigid structures, combined with compensatory cavities. The scientific value of the work is to establish patterns of stress-strain state of rocks underlying the strict conservation structures that are built in conjunction with compensatory cavities, thus justify the parameters of the new method of excavation.The practical value of the work is to develop a new way of development workings and methods of calculation of its parameters.The implementation of the conclusions and recommendations of the work. Results have been implemented in the mine "Shcheglovskaya-Deep" for the conditions of the 5th Western conveyor drift layer m3, thus reducing the volume of repair work on ripping the soil to 31-38% at the same economic effect amounted to UAH 200 / rm. output. The novelty of the work: 1.Otnoshenie volumes of extruded rock hard soil under-standing security facilities in the directions perpendicular to the sides of its base, is a linear dependence on the ratio of the size of the protection osnovaniya.2.Pri workings sizes ahbhm rigid structures, erected in conjunction with compensatory skhbhm size cavities, the value of rock displacement of soil excavation depends inversely, and rock roof - is directly proportional to the distance between the rigid structures (c). In this case, the smallest displacement of the soil are provided at a ratio of size m / a: b / a: c / a = 1:2:1 (Pat. 94327 Ukraine). The results of the work are used in the mine "Shcheglovskaya-deep", introduced in the educational process in the SHEE "Donetsk National Technical University". Use Branch: Underground mining of minerals.