PL420148A1 - Method for determination of the horizontal tangent value of the ground vibrations speed vector for different distances from the vibration source - Google Patents

Method for determination of the horizontal tangent value of the ground vibrations speed vector for different distances from the vibration source

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Publication number
PL420148A1
PL420148A1 PL420148A PL42014817A PL420148A1 PL 420148 A1 PL420148 A1 PL 420148A1 PL 420148 A PL420148 A PL 420148A PL 42014817 A PL42014817 A PL 42014817A PL 420148 A1 PL420148 A1 PL 420148A1
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PL
Poland
Prior art keywords
vibrations
source
horizontal tangent
distance
vibration
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Application number
PL420148A
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Polish (pl)
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PL231684B1 (en
Inventor
Tadeusz Chrzan
Barbara Chrzan
Kamil Rogosz
Arkadiusz Grześkowiak
Original Assignee
POLTEGOR-INSTYTUT Instytut Górnictwa Odkrywkowego
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Priority to PL420148A priority Critical patent/PL231684B1/en
Publication of PL420148A1 publication Critical patent/PL420148A1/en
Publication of PL231684B1 publication Critical patent/PL231684B1/en

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Abstract

Sposób określania wartości poziomej stycznej wektora prędkości Vy drgań gruntu dla różnych odległości od źródła drgań, wytworzonych poprzez odpalenie ładunku materiału wybuchowego, umieszczonego w rozmieszczonych w linii otworach strzałowych, znajdujący zastosowanie w górnictwie odkrywkowym, w celu określenia czy rozkład drgań parasejsmicznych układa się kołowo, w którym pomiaru poziomej stycznej wektora prędkości Vy drgań gruntu dokonuje się w punktach pomiarowych umieszczonych w różnych odległościach od źródła drgań i pod różnymi kątami kierunkowymi ?, z których każdy stanowi kąt pomiędzy linią otworów strzałowych a linią łączącą punkt pomiarowy ze źródłem drgań, które stanowi środkowy otwór strzałowy lub środek linii otworów strzałowych charakteryzuje się tym, że wybiera się od kilku do kilkunastu punktów pomiarowych, dla których kąt kierunkowy ? jest z przedziału od 0° do 90° i mierzy się ich rzeczywistą odległością R od źródła drgań, kolejno wyznacza się wartość średnią tych odległości S, a następnie rzeczywistą odległość R poszczególnych punktów pomiarowych od źródła drgań dzieli się przez wartość średnią odległości S, przez co otrzymuje się wskaźnik wpływu odległości RD dla każdego punktu pomiarowego, po czym mnoży się wartość poziomej stycznej wektora prędkości Vy drgań gruntu zmierzonej w danym punkcie pomiarowym przez odpowiadający danemu punktowi pomiarowemu wskaźnik wpływu odległości RD, a wyniki otrzymane dla wartości średniej odległości S punktów pomiarowych od źródła drgań, dla wybranych od kilku do kilkunastu punktów pomiarowych dla których kąt kierunkowy ? wynosi od 0° do 90°, nanosi się na układ współrzędnych i przedstawia się graficznie przy pomocy wykresu Vy=f(?) poziomej stycznej wektora prędkości drgań, z którego odczytuje się następnie, czy rozkład drgań parasejsmicznych układa się kołowo.The method of determining the horizontal tangent value of the velocity vector Vy of ground vibrations for different distances from the source of vibrations, generated by firing explosive charges placed in line of blast holes, used in surface mining, in order to determine whether the distribution of paraseismic vibrations is circular. which measure the horizontal tangent velocity vector Vy of soil vibration is made at measuring points located at different distances from the source of vibration and at different directional angles?, each of which is the angle between the line of blast holes and the line connecting the measuring point with the source of vibration, which is the central hole blast or center of the blast hole line is characterized by the fact that from several to several measuring points are selected for which the directional angle? is from the range of 0 ° to 90 ° and their actual distance R is measured from the source of vibrations, the average value of these distances S is determined successively, and then the actual distance R of individual measuring points from the source of vibrations is divided by the average value of distance S, by which the RD distance impact indicator is obtained for each measuring point, then the value of the horizontal tangent velocity vector Vy of soil vibrations measured at a given measuring point is multiplied by the RD distance impact indicator corresponding to a given measuring point, and the results obtained for the mean value of the distance S of the measuring points from the source vibrations, for selected from several to several measurement points for which the direction angle? is from 0 ° to 90 °, applied to the coordinate system and graphically represented by the graph Vy = f (?) of the horizontal tangent vibration velocity vector, from which it is then read whether the distribution of paraseismic vibrations is circular.

PL420148A 2017-01-11 2017-01-11 Method for determination of the horizontal tangent value of the ground vibrations speed vector for different distances from the vibration source PL231684B1 (en)

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PL420148A PL231684B1 (en) 2017-01-11 2017-01-11 Method for determination of the horizontal tangent value of the ground vibrations speed vector for different distances from the vibration source

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Application Number Priority Date Filing Date Title
PL420148A PL231684B1 (en) 2017-01-11 2017-01-11 Method for determination of the horizontal tangent value of the ground vibrations speed vector for different distances from the vibration source

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PL420148A1 true PL420148A1 (en) 2018-07-16
PL231684B1 PL231684B1 (en) 2019-03-29

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PL420148A PL231684B1 (en) 2017-01-11 2017-01-11 Method for determination of the horizontal tangent value of the ground vibrations speed vector for different distances from the vibration source

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL449290A1 (en) * 2024-07-23 2026-01-26 POLTEGOR-INSTYTUT Instytut Górnictwa Odkrywkowego Method for determining the maximum vertical vibration frequency in a deposit caused by a paraseismic longitudinal wave in the near field during the mining of a rock block by blasting

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PL231684B1 (en) 2019-03-29

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