Larionov H.І., Larionov M.H. About one method of evaluation of freight formalities of metal polymer anker from their effects of its parameters

Details

Parent Category: Geo-Technical Mechanics, 2018

Category: Geo-Technical Mechanics, 2018, Issue 142

Geoteh. meh. 2018, 142, 164-178

DOI: https://doi.org/10.15407/geotm2018.142.164

ABOUT ONE METHOD OF EVALUATION OF FREIGHT FORMALITIES OF METAL POLYMER ANKER FROM THEIR EFFECTS OF ITS PARAMETERS

Larionov H.І., Larionov M.H.

Authors:

Larionov H.І. Doctor of Technical Sciences (D.Sc.), Senior Researcher (IGTM, NAS of Ukraine)

Larionov M.H. Master of Sciences (M.S.) (IGTM, NAS of Ukraine)

UDC 622.28.044:622.831

Language: Ukrainian

Annotation.

In the paper the application of point estimation of the results obtained by numerical methods is considered. The result of the point evaluation is an analytical expression in the form of the product of the independent functions of one variable. The expression is used to analyze the behavior of the function in the neighborhood of the point being studied. As model, for the demonstration of the proposed method, the problem of representing a number of elementary functions with an estimate of their errors is considered. An example of using this approach to the specification is given. The conclusion about the possibility of applying this approach to solving an important scientific problem of determining the step of arrangement of anchors is taken into account taking into account the transfer mechanism in the "anchor-fixing mixture-rock" system. The method of sequential approximation, proposed to determine the regularities between the parameters of the system, confirmed its efficiency.Relative errors for most parameters do not exceed 7%, which is a confirmation of the efficiency of the algorithm, on the one hand, and the possibility of using simplified formulas for engineering calculations, on the other. The system of parameters for assessing the stress-strain state is determined by solving two problems. From the solution of the modified generalized problem M.E. Zhukovsky determined the distribution of tangential stresses on the surface of the well. Next, it was used as the boundary conditions for determining the zone of distribution of the stress-strain state in the vicinity of the anchor. This approach allowed to obtain the dependence of the step of arrangement of anchors, taking into account the depth of occurrence of mining, preliminary tension of anchors, length, its diameter, intensity of tangential stresses. The radius of influence is proportional to the stiffness of the system, which coincides with the conclusions of other scientists about the inverse nature of the dependence on the length of the anchor and confirms the correctness of the obtained dependence.

Keywords:

metal-polymer anchor, estimation, stress-deformed state, system, independent functions, radius of influence.

References:

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About the authors:

Larionov Grigoriy Ivanovych, Doctor of Technical Sciences (D.Sc.), Senior Researcher, Senior Researcher in Department of Mining Transport Physics and Mechanics, M.S. Polyakov Institute of Geotechnical Mechanics NAS of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

Larionov Mykola Grigorovych, Master of Sciences (M.S.), Department of Mining Transport Physics and Mechanics, M.S. Polyakov Institute of Geotechnical Mechanics NAS of Ukraine (IGTM, NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

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