Determination of the Parameters of the Effects of Undermining in Specific Conditions of Block 7, Mine Plant 1, at the Lazy Site

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F17%3A10235969" target="_blank" >RIV/61989100:27350/17:10235969 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.5593/sgem2017/22/S09.028" target="_blank" >http://dx.doi.org/10.5593/sgem2017/22/S09.028</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5593/sgem2017/22/S09.028" target="_blank" >10.5593/sgem2017/22/S09.028</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Determination of the Parameters of the Effects of Undermining in Specific Conditions of Block 7, Mine Plant 1, at the Lazy Site

Popis výsledku v původním jazyce

Prediction of the effects of deep mining on the surface is connected with the necessity to verify the coefficients of the theoretical calculation of movements and deformations of the slope of a subsidence trough. One of the methods used to verify the coefficients of the theoretical calculation is the reverse evaluation of theoretical drops verified from the results of direct measurements of movements of surface points. The resulting movement of the surface point is resolved into a horizontal component (shift) and a vertical component (drop). Due to the fact that there is a known functional relationship between drop and shift, it is possible to calculate the values of shift from the determined values of drops. Crucial for the verification of the coefficients of the theoretical calculation of the effects of mining on the surface is thus the verification of the theoretical and measured drops of surface points. This paper describes the formation of a subsidence trough in the area of Block 7 of the mining zone of Mine Plant 1 at the Lazy site on a line of an observation station. In this area, mining takes place in coal seam 40, using the method of directional longwall mining with controlled caving (longwall top coal caving). This paper gives the values of drops obtained from measurement on the line of the observation station during the mining of coalfaces 140702, 140704, 140706 and 140708, and the calculated theoretical values of drops of surface points. Using the measured and theoretical values of drops, the theoretical drops are verified, and subsequently the value of the coefficient of mining is determined, as well as the width of the stope in the probable time of failure of the rigid roof.

Název v anglickém jazyce

Determination of the Parameters of the Effects of Undermining in Specific Conditions of Block 7, Mine Plant 1, at the Lazy Site

Popis výsledku anglicky

Prediction of the effects of deep mining on the surface is connected with the necessity to verify the coefficients of the theoretical calculation of movements and deformations of the slope of a subsidence trough. One of the methods used to verify the coefficients of the theoretical calculation is the reverse evaluation of theoretical drops verified from the results of direct measurements of movements of surface points. The resulting movement of the surface point is resolved into a horizontal component (shift) and a vertical component (drop). Due to the fact that there is a known functional relationship between drop and shift, it is possible to calculate the values of shift from the determined values of drops. Crucial for the verification of the coefficients of the theoretical calculation of the effects of mining on the surface is thus the verification of the theoretical and measured drops of surface points. This paper describes the formation of a subsidence trough in the area of Block 7 of the mining zone of Mine Plant 1 at the Lazy site on a line of an observation station. In this area, mining takes place in coal seam 40, using the method of directional longwall mining with controlled caving (longwall top coal caving). This paper gives the values of drops obtained from measurement on the line of the observation station during the mining of coalfaces 140702, 140704, 140706 and 140708, and the calculated theoretical values of drops of surface points. Using the measured and theoretical values of drops, the theoretical drops are verified, and subsequently the value of the coefficient of mining is determined, as well as the width of the stope in the probable time of failure of the rigid roof.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20703 - Mining and mineral processing

Projekt

—

Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

17th International Multidisciplinary Scientific GeoConference: SGEM 2017 : conference proceedings : 29 June-5 July, 2017, Albena, Bulgaria. Volume 17. Issue 22

ISBN

978-619-7408-02-7

ISSN

1314-2704

e-ISSN

neuvedeno

Počet stran výsledku

6

Strana od-do

229-234

Název nakladatele

STEF92 Technology Ltd.

Místo vydání

Sofia

Místo konání akce

Albena

Datum konání akce

29. 6. 2017

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

—