The Article presents the results of long-term investigations of the problem concerning the protection of shafts with pillars of reduced sizes under conditions of the Talnakh and Oktiabrsky deposits. The principal potentiality of partial mining of shaft-bottom pillars VS-3 and GS has been proved at the Oktiabrsky ore mine. Certain recommendations are given on optimization of parameters of shaft-bottom protective pillars.
Features of the stress field in the ore-bearing intrusions of the October and Talnakhskiy deposits, with taking into account the depth of the ore deposits and the formation of tectonic disturbances are considered. Analysis of tension underworked and overworked intrusion. The dependencies of stress field formation in the intrusion in the joint working out of intrusion ore deposits are obtained. Recommendations on joint working out of intrusion ore deposits Oktyabrskiy and Talnakhskiy deposits are given.
Consideration is given to the causes complicating the mining of shaftbottom pillar and protection of shaft lining. The analysis is given of the formation of stress-strain state of the protective pillar and its enclosing rocks. Practical recommendations are given for control of deformationand stresses in the shaftbottom mass during extraction of protective pillars in deep ore mines at Talnakh.
The reasons that complicate the process of elaboration dividing arrays of deep mines Talnakh. The analysis of the formation of stress-strain state dividing arrays during the development of treatment work. Practical advice on management strains and stresses in underworking Block structures dividing arrays.
The paper deals with the specific formation of stress fields in ore-bearing intrusions at the Oktiabrsky and Talnakh ore deposits with due account of depth of occurrence and formation of tectonic disturbances. The authors have investigated the influence of mining works on stress state of ore-bearing portion of the intrusion. The relationships were obtained in terms of the formation of stress fields in the intrusion during its undermining, overmining and joint mining of several ore deposits. Some recommendations are given for mining of series of ore formations at the Oktiabrsky and Talnakh deposits.
Consideration is given to the causes complicating the mining of shaftbottom pillar and protection of shaft lining. The analysis is given to the formation of stress-strain state of the protective pillar and its enclosing rocks. Practical recommendations are given for control of deformation and stresses in the shaftbottom mass during extraction of protective pillars in deep ore mines at Talnakh.
Consideration is given to the geological, mining and operating conditions of the Norilsk industrial district. The analysis is made of the present-day state of mining production of the Zapoliarny branch of the Norilsk Nickel Co. The principal trends in the safe and efficient exploration of the raw material resources base have been stated within the Norilsk industrial district .
The paper contains the results and analysis of the formation of stress-strain state in blocky structure enclosing the dividing mass. The regularities were established on the influence of blocky structure undermining on stress state of the floor of dividing mass. Recommendations are given for the safe mining in the dividing rock mass.
The paper presents the main technologies, characteristics, schematic diagrams and parameters of active methods for control of geomechanical state of technogenic rock mass, domain and technical-and-economical efficiency of their industrial application.