Zobrazeno 1 - 10
of 25
pro vyhledávání: '"underground drilling"'
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 7, Pp 173-178 (2024)
A digital monitoring system for underground drilling in coal mines has been designed to address issues such as difficulty in measuring borehole bottom engineering parameters, insufficient accuracy and completeness of drilling data, and inadequate app
Externí odkaz:
https://doaj.org/article/1be98d10ed6b41e0b95c5217c2c50d5b
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-24 (2024)
Abstract In the field of engineering systems—particularly in underground drilling and green stormwater management—real-time predictions are vital for enhancing operational performance, ensuring safety, and increasing efficiency. Addressing this n
Externí odkaz:
https://doaj.org/article/2050cec9c81b444cb849a0f5c7038bb6
Publikováno v:
Water Resources and Industry, Vol 31, Iss , Pp 100250- (2024)
Hidden collapse column associated with high pressure dynamic water is a main cause of major water inrush accidents in North China type coal fields. Taking the structural abnormality area discovered in 11603 working face of Daizhuang Coal Mine as an e
Externí odkaz:
https://doaj.org/article/81f570c99df34516833228dfab87ab44
Publikováno v:
In Water Resources and Industry June 2024 31
Autor:
LI Kun
Publikováno v:
Meikuang Anquan, Vol 54, Iss 3, Pp 226-231 (2023)
In order to meet the design requirements of the end-actuator of the drill pipe loading and unloading robot in coal mines, a hydraulic permanent magnet drill pipe grabbing device was developed. The structural characteristics and the process flow of th
Externí odkaz:
https://doaj.org/article/989634d7bfb244beb1f5e375ab1b856c
Publikováno v:
Meitan kexue jishu, Vol 50, Iss 12, Pp 73-82 (2022)
In order to make use of the favorable extraction conditions formed by ground fracturing to carry out the underground borehole replacement extraction in the drainage exhaustion period of ground fracturing wells, and form the advanced treatment of grou
Externí odkaz:
https://doaj.org/article/8d5e2b62e6dc49298b76023f8e2d980a
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Publikováno v:
Meikuang Anquan, Vol 53, Iss 3, Pp 150-155 (2022)
The basic design principles and structural characteristics of the feeding device of drilling rig in underground coal mine are analyzed. According to the demand of long-stroke, a feeding device by the series and parallel combination cylinder is develo
Externí odkaz:
https://doaj.org/article/2caa7d12efba4bd19b87ee80a57adfce
Publikováno v:
Gong-kuang zidonghua, Vol 46, Iss 10, Pp 9-13 (2020)
Development and application of intelligent drilling tool and acquisition and analysis of drilling data are outstanding characteristics of intelligent underground drilling. However,research foundation of intelligent underground drilling in China's coa
Externí odkaz:
https://doaj.org/article/05723f53c749431a89d882bdf153177c
Publikováno v:
Meikuang Anquan, Vol 51, Iss 6, Pp 134-137 (2020)
The common types and treatment methods of drilling accidents in directional drilling construction are described, and the principle, auxiliary salvage drilling tools, process methods and key points of reverse wire salvage technology are emphatically a
Externí odkaz:
https://doaj.org/article/602846917f2747d19e861eaa80b846a3