Zobrazeno 1 - 10
of 4 492
pro vyhledávání: '"mechanized"'
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:
Meikuang Anquan, Vol 55, Iss 12, Pp 31-38 (2024)
In order to control the dynamic pressure behavior of the working face under the condition of composite thick and hard roof, taking a mine in Ordos as an example, through theoretical analysis, it is clarified that the instability of small coal pillar
Externí odkaz:
https://doaj.org/article/e57201bb56af4794ab96c89b45c1876c
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
Autor:
Yang Zhang, Danxia Hou, Chuanyun Xu, Heng Wang, Liping Peng, Xinghai Yuan, Xuanpeng Zhang, Gang Li, Song Sun
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-15 (2024)
Abstract Sand gradation is an important reference factor for concrete proportion design, which has a significant impact on the strength and workability of concrete. The efficiency of using the traditional vibrating sieving method to measure the grada
Externí odkaz:
https://doaj.org/article/4b6147ade4eb4febbeb38a857d7171a8
Publikováno v:
Meikuang Anquan, Vol 55, Iss 11, Pp 210-216 (2024)
In order to realize the unmanned mining of the fully mechanized mining face in the coal mine, instead of the staff to explore and monitor the dangerous mining environment, we designed a control system for a mining inspection device based on laser SLA
Externí odkaz:
https://doaj.org/article/0f48d42da7224e72acf6ff6bab2022d3
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 9, Pp 20-27 (2024)
This paper analyzes the current status and existing issues in the control technology of surrounding rock and intelligent top coal caving technology for thick and ultra-thick coal seams in fully mechanized caving faces. The study focuses on five aspec
Externí odkaz:
https://doaj.org/article/cdabbcdf4831421183fe2275ba57331b
Publikováno v:
Gong-kuang zidonghua, Vol 50, Iss 8, Pp 84-90 (2024)
Currently, most research on coal quantity detection focuses on the coal quantity detection and recognition of underground belt conveyors in coal mines. The coal quantity detection of scraper conveyors in fully mechanized working (caving) faces only s
Externí odkaz:
https://doaj.org/article/ff96c3c67fad4072adfa1b317dc9377a
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 90-96 (2024)
To tackle the challenge of accurately determining the volumetric gangue content rate under actual stacking conditions of coal-gangue in fully mechanized caving faces, a prediction method based on the DeepLab v3+ model was proposed. A dataset consisti
Externí odkaz:
https://doaj.org/article/9d59d22f803b4a9f887aaeaeb669b70d
Autor:
Xiaoyan GONG, Hao ZOU, Zhuangzhuang LIU, Long CHEN, Haoran FU, Yuheng SUN, Hao LI, Xinyu WANG, Huming NIU
Publikováno v:
Meitan kexue jishu, Vol 52, Iss 10, Pp 136-146 (2024)
In view of the problem that the traditional ventilation total amount control management mode of the fully mechanized heading face cannot carry out wind flow control according to the actual demand, which causes gas and dust accumulation and pollution
Externí odkaz:
https://doaj.org/article/51e60d8f5df04506b8e48c29309754d4