Nalivaiko J. Parameter grounds of adjacent coal seam mining by mechanized complexes in Lvov-Volynsk deposit

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0402U001863

Thesis Registration Form

0402U001863.pdf

Applicant for

Specialization

  • 05.15.02 - Підземна розробка родовищ корисних копалин

31-05-2002

Specialized Academic Board

Д 08.080.03

National Technical University Dnipro Polytechnic

Essay

New decision of actual scientific problem of parameter grounds of adjacent coal seam extraction by mechanized complexes in complicated mining-geological conditions has been obtained in this work. Calculated algorithm of deter mining and analyzing value-added tax (VAT) of heterogeneous massif in regard to seam extraction in condition of overcutting and undercutting on the base of boundary elements and V.G.Gmoshinsky's analytical decision using P.P.Balandin's criterion has been carried out. Correlative relationship for maximum drift convergation and maximum coefficient of stress concentration in zones of end pressure in front of stopes has been obtained. In the process of mining tests specific display of rock pressure in zones of high ground pressure from pillar of adjacent seams was recorded. Using this methodics, rational parameters of stoping in the mines of Lvov region have been determined (the speed of cutter-loader delivery, the speed of drift movement forced and geometrical parameters of powered support, limited distance between stopes across adjacent seams). Taking into account these relationships, calculation methodics of rational parameters of powered support while working in zones of high ground pressure was composed.

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