Necheporenko A. Substantiation the technological parameters of underground coal mining taking into account the dynamics of regional discharge zones

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0411U001294

Applicant for

Specialization

  • 05.15.02 - Підземна розробка родовищ корисних копалин

21-01-2011

Specialized Academic Board

Д 08.080.03

National Technical University Dnipro Polytechnic

Essay

Thesis is devoted to study actual scientific problem underground mining parameters including dynamic changes of the stress-strain state of rocks in a regional zone of discharge. The main idea is to use a dependency of rheological behavior of rocks containing the analysis of geomechanical model of the object of research. Rheological parameters of the model established by execution of field research in the sloping section of the mine workings Kalmius'koy them. AF Mine. Identification and natural object model made the decision problems that correspond to real geological and mining-technical conditions. These conditions pertain to depths exceeding 1000 m and typical of coal seams, which occur in carbon emissions. Simulation performed in dozens of variations of the provisions unloading zone and ranks that are working out. Installed diagram asymmetry coefficients of stress concentration and length the rational unloading bench, which is 300m. Geomechanical model proposed allows to assess the critical stress of rock mass around excavations in the process of cleaning them off. Based on the simulation set points for inclined excavations and chambers for hoisting machines.

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