Application of Seismic Parameters for Estimation of Destress Blasting Effectiveness

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68145535%3A_____%2F17%3A00475722" target="_blank" >RIV/68145535:_____/17:00475722 - isvavai.cz</a>

Result on the web

<a href="http://www.sciencedirect.com/science/article/pii/S1877705817323810" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1877705817323810</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.proeng.2017.05.241" target="_blank" >10.1016/j.proeng.2017.05.241</a>

Result language

angličtina

Original language name

Application of Seismic Parameters for Estimation of Destress Blasting Effectiveness

Original language description

Coal seams in the Upper Silesian Coal Basin are currently extracted under more and more disadvantageous geological and mining conditions. Mining depth, geological dislocations and mining remnants are factors which affect the rockburst hazard during underground mining to the greatest extent. This hazard can be minimized by employment of active rockburst prevention, where long-hole destress blasts in roof rocks (torpedo blasts) have an important role. The main goal of these blastings is to either destress local stress concentrations in rock mass and to fracture the thick layers of strong roof rocks to prevent or minimize the impact of high energy tremors on the excavations. Sometimes, these blastings are performed to make the roof rocks caving behind the longwall face easier. The efficiency of blasting is typically evaluated from the seismic effect, which is calculated based on seismic monitoring data (seismic energy) and the weight of the charged explosive. This method, as used previously in the Czech Republic, was adopted in a selected Polish hard coal mine in the Upper Silesian Coal Basin. This method enables rapid and easy estimation of destress blasting effectiveness, adjusted to conditions occurring in the designed colliery. Destress blasts effectiveness may be evaluated via the seismic source parameters analysis as well, as was carried out in the selected colliery in the Polish part of the Upper Silesian Coal Basin. These parameters provide information, for example, on its size, state of stress and occurrence of slip mechanism in the source of provoked tremors. Long-hole destress blasting effectiveness in selected colliery has been evaluated using the seismic effect method and seismic source parameters analysis. The results were compared with each other and conditions were observed in situ.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20703 - Mining and mineral processing

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Article name in the collection

Procedia Engineering - ISRM European Rock Mechanics Symposium EUROCK 2017

ISBN

—

ISSN

1877-7058

e-ISSN

—

Number of pages

11

Pages from-to

750-760

Publisher name

Elsevier Ltd.

Place of publication

Amsterdam

Event location

Ostrava

Event date

Jun 20, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

000416996000096