Розвиток основ руйнівного деформування приконтурних порід слабометаморфізованого масиву дією геотехнічних збурень

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dc.contributor.authorСтовпник, Станіслав Миколайович
dc.date.accessioned2021-04-11T18:13:07Z
dc.date.available2021-04-11T18:13:07Z
dc.date.issued2021
dc.description.abstractenThe dissertation is devoted to the decision of an actual scientific and practical problem of development of bases of destructive deformation of contour rocks of the weakly metamorphosed massif by action of geotechnical disturbances which is based on development of measures of maintenance of a balanced condition of a mountain massif. The distribution of energy release of the rock mass around the mine is determined in the work and the share of energy that causes the unbalanced state of the massif, which can be regulated by the energy intensity of rock destruction, is determined. For the first time, the self–oscillating redistribution of compressive and tensile stresses, which determine the development of fracture around the workpiece, was established and experimentally confirmed. Technological solutions and technical means have been developed to ensure the operational stability of mine workings. Technological schemes of step–by–step carrying out of workings are developed. Scientific novelty: The energy component of the unbalanced state of an extremely tense massif is substantiated and analytically determined, the realization of which in the form of physical deformations and destruction of rocks causes damped oscillations of the synenergetic process of achieving equilibrium of the massif disturbed by production. The achievement of the minimum level of energy state of the array as an equilibrium condition of the contour array around the zone of destroyed rocks in the form of an asymmetric ellipse with an equivalent ratio of the lengths of the ellipse diagonals to the physical anisotropy of rocks. For the analytical model of asymptotic occurrence of fracture zones around workings in the form of harmonic oscillations of mutual redistribution of concentration 37 of normal compressive stresses and tangential tensile stresses in the surrounding array is proposed. For the phenomenon of compressibility of collapsed rocks was recorded by instrumental methods and the effect of restoring the bearing capacity of destroyed rocks by the action of rock pressure loads was proved. The physical conditions of formation of different shapes of rock blocks in lateral pillars of development as exponential dependence of the angle of inclination of the main crack during rock destruction by compression on load intensity, which is proportional to the rate of roof stratification, were determined and experimentally confirmed. The hydrostatic state of an array of weakly metamorphosed rocks was experimentally proved by side–gap tests on the effect of "memory" of rocks. The polynomial dependences of indicators of development of a zone of the destroyed breeds around working out by action of geotechnical disturbances are received: at carrying out of parallel working out, influence of mining works, performance of repair work. The dependence of the stable state of the shape of the zone of destroyed rocks in the form of an asymmetric ellipse on the strength of rocks was determined. The conditions of formation of rock blocks of different shapes in the sides of the workings and their compliance with the process of deformation of rocks around the workings are determined. The dependence of indicators of compressibility and bearing capacity of rock mass of destroyed rocks under the action of rock pressure loads is established. The dependence of dynamics of development of a zone of the destroyed breeds around working by action of geotechnical disturbances is carried out: carrying out of parallel workings, influence of extractive works, performance of repair work, etc. The dynamics of attenuation of reference pressure after lava stop is established. The conditions for the creation of the system "Fastening – a layer of reinforced rock–array", which provides a mode of increasing resistance. The indicators of regulation of bearing capacity of fastening from the mode of manifestations of rock pressure are determined. The dependence of intensity of deformation process around working on the moment of creation of the closed design of fastening is established. The possibility of restoring the bearing capacity of rock mass by clogging of clay rocks was determined. The conditions for stopping the process of deformation of rocks around the workings by pinching the fastening structure are determined The practical results of the work are as follows: developed and industrially tested fastening system "closed fastening – layer of reinforced rocks – array", which provides the balance of the array of weakly metamorphosed rocks in the elastic support mode, developed technology for phased construction of workings based on deformation intensity creation of a closed fastening structure, developed technology of restoration of workings section by clamping of fastening structure as conditions to prevent intensification of rock deformation process around workings, production process of main workings maintenance at Zakhidno–Donbaska mine document "Guide to the protection of mining in the mines of Western Donbass" (VNIMI), introduced a combined annular structure of I–beams and anchor reinforcement during the construction of Beskid tunnel. The difference between research and known solutions is to develop a design of annular fastening of I–beam profile, which provides joint deformation around the contour rocks in the mode of "permanent elastic support", to develop a method for determining the density of anchor reinforcement rocks in mine conditions according to geological exploration works depending on the stress state of the massif, development of technology of step–by–step workings by combine method depending on intensity of deformation process in the surrounding massif, development of control system of stability of system of mine workings under the influence of geotechnical disturbances.uk
dc.description.abstractukДисертація присвячена вирішенню актуальної науково–практичної проблеми розвитку основ руйнівного деформування приконтурних порід слабометаморфізованого масиву дією геотехнічних збурень, яка спирається на розробку заходів забезпечення врівноваженного стану гірського масиву. В роботі визначено розподіл енерговиділення гірського масиву навколо виробки і визначена доля енергії, яка викликає неврівноважений стан масиву, який регулюється енергоємністю руйнування порід. Вперше встановлено і експериментально підтверджено коливальний перерозподіл напружень стискання та розтягнення, які визначають розвиток руйнування навколо виробки. Розроблено технологічні рішення і технічні засоби, що забезпечують експлуатаційну стійкість гірничих виробок. Розроблені технологічні схеми поетапного проведення виробок.uk
dc.format.page42 с.uk
dc.identifier.citationСтовпник, С. М. Розвиток основ руйнівного деформування приконтурних порід слабометаморфізованого масиву дією геотехнічних збурень : автореф. дис. … д-ра техн. наук : 05.15.09 - геотехнічна і гірнича механіка / Стовпник Станіслав Миколайович. – Київ, 2021. – 42 с.uk
dc.identifier.urihttps://ela.kpi.ua/handle/123456789/40523
dc.language.isoukuk
dc.publisherКПІ ім. Ігоря Сікорськогоuk
dc.publisher.placeКиївuk
dc.subjectгірнича виробкаuk
dc.subjectслабометаморфізований масивuk
dc.subjectруйнування гірських порідuk
dc.subjectгеотехнічні збуренняuk
dc.subjectконструкція кріпленняuk
dc.subjectmininguk
dc.subjectweakly metamorphosed massifuk
dc.subjectdestruction of rocksuk
dc.subjectgeotechnical disturbancesuk
dc.subjectfastening designuk
dc.subject.udc622.031uk
dc.titleРозвиток основ руйнівного деформування приконтурних порід слабометаморфізованого масиву дією геотехнічних збуреньuk
dc.typeThesisuk

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