Stetskiv I.V. Justification parameters extraction of mineral resources in the
sides of pits when mining stratified deposits.
Thesis for a master's degree in the specialty 8.05030101 - Mining and mining. -
National Technical University of Ukraine "Kyiv Polytechnic Institute", Kiev, 2016.
Dissertation is devoted to establishing the parameters of extraction of reserves
formation of mineral deposits in the sides, which ensure the stability of pit walls
during and after working out.
The calculations of the basic parameters that determine the possibility of safe
and cost-effective application Highwall systems.
According to the research establishment that the development of seams of coal
pillar width interchamber ensuring stability workings, 1.6 times less compared with
the extraction of lignite, that is 1.86 m and 3.0 m respectively.
Modeling of mining stocks stone (mine Okaba, Nigeria) and brown coal
(Semenovskoe field, Ukraine) the Highwall system with auger executive body (round
shape cross section) in the sides and body continuous (rectangular cross-sectional
shape) and calculated values of subsidence surface for installation of stability pit
Applying numerical simulation finite element method with the use of the
criterion of the Mohr-Coulomb strength PLAXIS system.
As a result of coal mining modeling pit wall (cut) found that when placing the
mining circular shape with a diameter of 1.0 in a row at a distance of 4.0 to 0.5 m
apart screw holes destruction does not occur.The results of modeling the behavior of pit wall when placing the screw recess
holes in two rows in a checkerboard pattern indicates that the change in sediment
board surface depending on the distance between production has a certain regularity.
If we compare the value of sediment in well placed in two rows in a staggered
manner and in a single row, the increase in vertical sediment observed for 8 ... 31%.
Simulation of coal mining workings of rectangular cross section shows that at
any distance between the workings vertical surface subsidence does not exceed the
In the simulation, development of reserves of brown coal in the sides in
Semenovski field conditions it found that when the screw recess coal mines during
the period of their stability is ensured.
When extracting reserves continuous complex Highwall (MP) sustainability
developments rectangular shape is not provided.
Keywords: board career, stocks boards, mountain, vertical rainfall, deformation,