In-situ experimental study on hydro-borehole technology application to improve the hard coal excavating techniques in coal mine

被引：11

作者：

Dubinski, Jozef ^{[2
]}

Jura, Bartlomiej ^{[1
]}

Makowka, Janusz ^{[3
]}

Janoszek, Tomasz ^{[3
]}

Skiba, Jacek ^{[1
]}

Hildebandt, Robert ^{[4
]}

Duda, Adam ^{[5
]}

Howaniec, Natalia ^{[6
]}

Smolinski, Adam ^{[7
]}

机构：

[1] Cent Min Inst, Dept Min Aerol, Pl Gwarkow 1, PL-40166 Katowice, Poland

[2] Cent Min Inst, Dept Geol & Geophys, Pl Gwarkow 1, PL-40166 Katowice, Poland

[3] Cent Min Inst, Dept Extract Technol Rockburst & Min Support, Pl Gwarkow 1, PL-40166 Katowice, Poland

[4] Cent Min Inst, Dept Underground Res & Surface Maintenance, Podleska 72, PL-43190 Mikolow, Poland

[5] Cent Min Inst, Dept Risk Assessment & Ind Safety, Pl Gwarkow 1, PL-40166 Katowice, Poland

[6] Cent Min Inst, Dept Energy Saving & Air Protect, Pl Gwarkow 1, PL-40166 Katowice, Poland

[7] Cent Min Inst, Pl Gwarkow 1, PL-40166 Katowice, Poland

来源：

SCIENTIFIC REPORTS | 2023年 / 13卷 / 01期

关键词：

D O I：

10.1038/s41598-023-28501-7

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The hydro-mining technology is considered as a promising method of bituminous coal excavation. The paper presents the results of the in-situ experimental campaign and modelling of hydro-cutting technology application. The proposed innovative technology was tested in terms of the effects of the distance between the outlet of water from the nozzle and a sidewall, pressure of the water jet, as well as the type of a nozzle on hydro-mining effectiveness. The hydro-cutting tests of coal seam performed in the Experimental Mine "Barbara" in Poland proved that the increase in water pressure in the range 20-40 MPa only slightly affects the coal face structure, while high pressure, of 80-100 MPa, has a significant impact on a coal face structure. The experimental results also showed the major effects of operating time as well as the distance of the water jet on the effectiveness of coal face mining.

引用

页数：17

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