ON THE STRESS-STRAIN STATE OF THE WALL ROCKS AT THE SUDDEN COLLAPSE OF THE MAIN ROOF
Journal Title: Вісник Кременчуцького національного університету імені Михайла Остроградського - Year 2017, Vol 1, Issue 103
Abstract
Purpose. To determine of the stress-strain state of the lateral rocks during sudden collapse of the roof rocks. Meth- odology. Complex methods of research using the basic provisions of theoretical mechanics and impact theory have been used. Results. The parameters of the hanging rock console, the type of its support and the magnitude of the impulse force pulse in the occurrence of emergency situations associated with the collapse of the lateral rocks, determine the stability of the roof and the soil of the developed formation, as well as the state of the mine workings have been estab- lished. Originality. With the length of the rock console of the direct roof over 20 m, as a result of the collapse of the lateral rocks, the magnitude of the impact pulse of the colliding bodies as a result of sudden caving remains constant has been established. Practical value. Measures aimed at increasing the stability of mine workings in the development of coal seams in difficult mining and geological conditions have been developed. Сonclusions. In order to prevent sudden collapses of lateral rocks in the development of steep coal seams, one should be guided by the use of a universal method for controlling rock pressure and protecting mine workings has been proved. References 23, figures 6.
Authors and Affiliations
S. Podkopaev, I. Yordanov, D. Chepiga
Keywords
Related Articles
- EP ID EP659481
- DOI -
- Views 81
- Downloads 0
THE SYSTEM OF EXERCISES FOR INTERCULTURAL COMMUNICATION COMPETENCIES DEVELOPMENT OF FOREIGN STUDENTS
Purpose. To analyze the issues of designing of the system of exercises to develop intercultural competencies of foreign students during the Ukrainian language training. Findings. Specific features of the system of exerci...
DEVELOPMENT OF A CONCEPTUAL MODEL FOR THE DEVELOPMENT OF ORGANIZATIONAL SUPPORT OF INDUSTRIAL ENTERPRISE INNOVATIVE ACTIVITY
Purpose. To development the model for organization support of innovative activity at the enterprise constructing and validation using the methods of economic and mathematical modeling. Methodology. The regression analys...
PROGNOSTIC ESTIMATION OF APPROXIMATIVE PROPERTIES OF BASES FOR TRIANGULAR FINITE ELEMENTS OF II ORDER
Purpose. The aim is to build and rationale for the practical application of basic functions in a power series for the finite element of the second order in the form of an isosceles right triangle. Methodology. For progno...
ADAPTIVE METHODOLOGY FOR THERMOELECTRIC CHARACTERISTICS CALCULATION OF MYOCARDIAL TISSUE ZONES FROM DIFFERENT ANATOMICAL HUMAN HEART
Purpose. To develop adaptive methodology of calculation of myocardial tissue thermoelectric characteristics based on the analysis of heart tissue individual electrical and thermal parameters response to the impact of rad...
THEORETICAL FOUNDATIONS OF THE VIBRATION COMPACTION OF CONCRETE MIXTURES
Purpose. To consider the theoretical foundations of the vibration compaction process, allowing to estimate efficiency and to choose rational modes of vibration effects on the concrete mixture on the basis of the minimum...