Computational models of geomechanical mechanisms for safe sublevel coal mining

Code

L2-7234 (C) - included in ARIS records

Head

PhD Jakob Likar

Period

9/1/2005 - 8/31/2008

Range in 2008

0.27 FTE

Science

Natural sciences and mathematics (3)
Engineering sciences and technologies (7)

Reseacher status

Researcher (10)
Junior expert or technical associate (0)

Education

Doctor's degree (7)
Other (3)

Sex

Man (10)

Status

Employed at RO and RRD (6)
No data on employment in RO (2)
Retired (1)
Deceased (1)

No. of publications

10–99 (4)
100–999 (5)
1,000–9,999 (1)

Projects / Programmes source: ARIS

source: ARIS

Computational models of geomechanical mechanisms for safe sublevel coal mining

Research activity

Code	Science	Field	Subfield
2.16.00	Engineering sciences and technologies	Mining and geotechnology

Code	Science	Field
T340	Technological sciences	Mining

Keywords

underground coal exploitation, caving proccesses, stress and strains, pore water preassure, comprimation of caving material, 3D numerical analysis, Finite Difference Method.

Evaluation (rules)

source: COBISS

Evaluation of bibliographic research performance indicators according to ARIS methodology

Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases

source: WoS

source: Scopus

source: COBISS

Researchers (10)

no.	Code	Name and surname	Research area	Role	Period	No. of publicationsNo. of publications
1.	20119	Jurij Čadež	Mining and geotechnology	Researcher	2005 - 2008	250
2.	11443	PhD Andrej Gosar	Geology	Researcher	2005 - 2008	455
3.	25592	PhD Gregor Jeromel	Mining and geotechnology	Junior researcher	2005 - 2008	28
4.	22918	Robert Lah	Mining and geotechnology	Researcher	2005 - 2008	44
5.	13459	Marjan Lenart	Geology	Researcher	2005 - 2008	54
6.	09644	PhD Jakob Likar	Mining and geotechnology	Head	2005 - 2008	1,884
7.	08302	PhD Tomaž Rodič	Materials science and technology	Researcher	2005 - 2008	241
8.	16096	PhD Tomaž Šuštar	Mathematics	Researcher	2005 - 2008	46
9.	11755	PhD Željko Vukelič	Mining and geotechnology	Researcher	2005 - 2008	323
10.	18918	PhD Milivoj Vulić	Geodesy	Researcher	2005 - 2008	228

Organisations (3)

no.	Code	Research organisation	City	Registration number	No. of publicationsNo. of publications
1.	1252	The Coal mine Velenje	Velenje	5040361	352
2.	1533	Centre for Computational Continuum Mechanics	Ljubljana	5663270	83
3.	1555	University of Ljubljana, Faculty of Natural Sciences and Engeneering	Ljubljana	1627074	19,839

Abstract

Project has already been developed in past years as part of applied research project in collaboration with Velenje coal mine, actual project will continue and finish work in past years. A 2D numerical analysis has been executed in past years, with usage of different failiure criteria, but results haven’t fully satisfied the expectations. Then a 3D numerical model has been constructed, and a special code for real geometry of geology and exploitation field has been developed. Test calculations with 3D model have been already executed, and first results fit the expectations. The calculation of previous coal exploitation, executed from Velenje coal mine will be performed in future, with different failiure criteria and other input data like geomechanical properties of raw materials, primary stress state and water pressures to adjust the calculation results as much as possible to real mechanism at exploitation of coal, or, in other words, a calibration of the model. At calibration phase an experience and basic research, site and laboratory, will be taken into account. If none of the failiure criteria won’t fit the expectations, for the first time in Slovenia a new failiure criteria will be developed, which will describe the properties of row material at Velenje coal mine area. When the model will be calibrated, a number of calculations will be executed, to simulate a coal exploitation, provided from Velenje coal mine in the future. The design of the exploitation proccess will be verified, critical areas will be find and changes will be suggested, if necessary. Paralel to the calculation a proccess of including a numerical analysis to the working process at Velenje coal mine will be done. Necessary hardware and software is partly already available. The project goal is to include a 3D numerical analysis in a working process, to developed a new tool for the exploitation coal design, increase the safety in coal exploitation nad improve the productivity of coal exploitation process.