Zobrazeno 1 - 10
of 733
pro vyhledávání: '"hydraulic support"'
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-18 (2024)
Abstract Surrounding rock pressure prediction for fully mechanized coal face (FMCF) roof management and control is of great significance. The key challenge is to effectively combine various factors to evolve the surrounding rock pressure trend with h
Externí odkaz:
https://doaj.org/article/3de50c19c78f417b99a054674220cec7
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 11, Pp 4810-4822 (2024)
Abstract To study the effect of different sizes and speeds of coal gangue falling on hydraulic supports for top‐coal caving discharge hydraulic support on the bearing characteristics of the hydraulic support, the ADAMS hydraulic support rigid‐fle
Externí odkaz:
https://doaj.org/article/6b2ffc9125f24bea88cb49322f37cd2d
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 9, Pp 75-81 (2024)
Contact coal-gangue identification requires studying the bearing characteristics of hydraulic support top beams in fully mechanized top coal caving. However, existing research primarily focuses on the bearing characteristics of supports before and af
Externí odkaz:
https://doaj.org/article/6c319fa85f8c4b519593ae9bd1003728
Autor:
GUO Xinwei
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 8, Pp 20-29 (2024)
In the hydraulic support work of fully mechanized working face, there are often problems such as insufficient initial support force and slow moving speed of the support. Currently, most solutions are based on the steady-state operation law of the hyd
Externí odkaz:
https://doaj.org/article/0dc0d34777ac423aad5ee71a5ac8aa76
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 8, Pp 14-19 (2024)
In response to the problems of cumulative errors and inaccurate correction results in the attitude calculation method of hydraulic supports based on inertial measurement units, a fully mechanized working face hydraulic support attitude monitoring met
Externí odkaz:
https://doaj.org/article/1f320017d23c4647bf3a1120061858d7
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 7, Pp 32-39 (2024)
In the actual production of coal working face, due to the roof conditions, mining influence, hydraulic support attitude and their mutual influence, the column pressure after the initial support of the hydraulic support may change, thus affecting the
Externí odkaz:
https://doaj.org/article/8a0e9d114ee94827be0477cb604a92f1
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 6, Pp 30-35 (2024)
Currently, most multi-step hydraulic support pressure predictions are cumulative predictions of single step hydraulic support pressure. The more times a single step accumulates, the greater the cumulative error, which affects the prediction precision
Externí odkaz:
https://doaj.org/article/dc74f7ba6224424fab4ff8217d9c8df7
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 1, Pp 52-64 (2024)
The geological conditions of deep coal resources are complex, and intelligent mining is the only way for the safe, efficient, and green development of deep coal resources. The complete set of intelligent mining technology and equipment that adapts to
Externí odkaz:
https://doaj.org/article/caec3b8e936a497d9f352c504fb3c026
Autor:
Shixin GONG
Publikováno v:
Meitan kexue jishu, Vol 52, Iss S1, Pp 1-12 (2024)
Accurate prediction of hydraulic support load plays an important role in improving the adaptability of support and the stability of surrounding rock control, where high-quality and large-scale time series data and effective prediction methods are nee
Externí odkaz:
https://doaj.org/article/d90d8b575fa542ac8cad47755cec8eea
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 6, Pp 129-135 (2024)
A hydraulic support height measueement sensor based on Pascal's law is designed to address the difficulties in measuring the height, reliability, and stability of hydraulic supports in fully mechanized working faces. The height measurement sensor is
Externí odkaz:
https://doaj.org/article/a90221ccec0847cf94bfe7681feaa2d7