Zobrazeno 1 - 10
of 649
pro vyhledávání: '"mining face"'
Publikováno v:
Meikuang Anquan, Vol 55, Iss 12, Pp 123-131 (2024)
Taking Sandaogou Coal Mine 85219 fully mechanized coal mining face as an example, the dust migration rules of the front and rear cylinders under the influence of different cutting turbulent wind conditions were numerically simulated, and the effects
Externí odkaz:
https://doaj.org/article/b09c241bf5e54662b87bf36deb8ef44b
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 11, Pp 174-185 (2024)
Straightness control of fully mechanized mining face is one of the key technologies to realize intelligent mining, and the position control performance of the hydraulic support push cylinder directly affects the straightness level of the mining face,
Externí odkaz:
https://doaj.org/article/0cb2db482e554b9995441358fd12cb18
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 10, Pp 160-167 (2024)
The effectiveness of air curtain dust control is influenced by various factors, including suction ventilation and radial airflow distribution. Existing research is largely limited to the effects of single factors on air curtain dust control. To under
Externí odkaz:
https://doaj.org/article/0b2662f125874d80b0ddc1c4befee85b
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 10, Pp 168-178 (2024)
To understand the migration and distribution patterns of cutting dust in the continuous mining face under ventilation disturbance, the 15218 continuous mining face of the Hongliulin Coal Mine in Shaanxi was taken as the research object. A physical mo
Externí odkaz:
https://doaj.org/article/cb243d3cfb804ee7ac92943f0188c62e
Publikováno v:
Meikuang Anquan, Vol 55, Iss 10, Pp 72-81 (2024)
For the problem of high temperature heat damage at 1012102 working face in Yuanzigou Mine, the best spray pressure and nozzle atomization parameters are determined by using the method of spray cooling experiment. The numerical simulation method is us
Externí odkaz:
https://doaj.org/article/a3099ba6a7074b60a57944d54ba0a1c5
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 9, Pp 98-107 (2024)
Research on coal flow characteristics based on sensors is limited by the restricted monitoring range of sensors, making it impossible to study the coal flow characteristics of the entire scraper conveyor. Additionally, research on coal flow character
Externí odkaz:
https://doaj.org/article/f2c6f4ce52f0486f9b1de268d3b2eeee
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 9, Pp 238-247 (2024)
To solve the problem of rapid following and advancing speed of support in the fully mechanized mining face, a distributed liquid supply system based on accumulators was proposed and tested in the S1204 working face in Ningtiaota Coal Mine. The speed
Externí odkaz:
https://doaj.org/article/6decdf352db64c5ca04ede5a04c8ac65
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 8, Pp 61-68 (2024)
When the mining relationship between the upper coal seam working face and the lower coal seam roadway in the close distance coal seam changes, the deformation and instability mechanism of the surrounding rock of the roadway will be more complicated.
Externí odkaz:
https://doaj.org/article/aa9a8ebb1ea44eb4bc61cb21e77f37d6
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 8, Pp 105-111 (2024)
In order to effectively detect and recognize whether the personnel on the mining face in coal mines are wearing safety protection devices, a small object detection method based on improved YOLOv8n is proposed. It is applied in situations such as poor
Externí odkaz:
https://doaj.org/article/0fc8dc4e25a540eeb82bf341e637c256
Publikováno v:
Case Studies in Thermal Engineering, Vol 63, Iss , Pp 105240- (2024)
The island mining face in coal mines often encounters stress concentration and significant air leakage, elevating the risk of rock burst and spontaneous combustion of residual coal in the goaf. This study centers on the investigation of the 9305 isla
Externí odkaz:
https://doaj.org/article/775aa9c4212d4e5a83b530b5015e952a