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Coal mining machine maintenance technical requirements
2024-11-18
The casing must be free of cracks or deformation. Welding repairs are permitted, but measures must be taken to prevent deformation and eliminate stress.
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18
2024-11
The coal mining techniques that are commonly used underground in coal mines.
The blasting mining process uses blasting methods to extract coal mines. In practical applications, the selection of blast holes is crucial. If the design is improper, the blasting effect will be affected. In mild cases, there may be blasting deviations, impacting the extraction volume; in severe cases, it can cause losses to life and property. A large amount of dust is generated after blasting, and the mining area needs to be managed post-blasting.
18
2024-11
What are the components and characteristics of coal mining machines?
The coal mining machine mainly consists of an electric motor, hydraulic transmission part, traction transmission part, cutting part, bottom support frame, height adjustment oil cylinder, cable dragging device, and so on.
18
2024-11
Gansu Energy Chemical released the investor relations activity record on June 18, stating that on June 17, 2024, the company received research from 59 institutions, including QFII, insurance companies, others, fund companies, securities companies, and sunshine private equity institutions.
18
2024-11
Have you mastered these 30 questions and answers on coal mining management?
30 questions and answers on coal mining management.
18
2024-11
The locations, reserves, production, coal types, and major mining areas of the six major coalfields.
18
2024-11
Who is "dueling" with the energy powerhouse to achieve the fastest growth?
Not long ago, Xinjiang revealed at the press conference on the national economic operation in the first three quarters of 2024 that its raw coal production ranks fourth in the country, with the highest growth rate nationwide. Meanwhile, Xinjiang's raw coal production accounts for 10.73% of the national total, an increase of 0.92 percentage points compared to last year.
18
2024-11
How to break the traditional governance dilemma of coal gangue?
On April 22, the Ministry of Natural Resources completed the public announcement of six recommended industry standards, including "Technical Specifications for Ecological Restoration of Mines Part 1: General Principles." The reporter noted that in the section on coal mines, the stacking and disposal of coal gangue was listed as one of the main issues. It requires understanding the total emissions and disposal measures, comprehensive utilization, as well as the quantity and height of the gangue piles, the area of land occupied, the stability of the pile engineering, pollution and governance related to spontaneous combustion of coal gangue, and ecological reconstruction.
18
2024-11
"Digital" drives the entire coal chain development.
In the giant mine pit, yellow earth is stripped away, and black coal is exposed. Mining trucks shuttle back and forth, busy with transportation operations. Unlike usual, these trucks have no drivers; apart from safety personnel on-site, the vehicles are "driven" by computers from several kilometers away, and the loading and unloading processes are completed automatically. Recently, at the Heidaigou open-pit coal mine of the Guoneng Zhuoneng Group in Ordos City, Inner Mongolia, three working faces are undergoing heavy-load testing with unmanned trucks.
18
2024-11
Achieving peak carbon emissions and carbon neutrality is a major strategic decision made by the Party Central Committee with Comrade Xi Jinping at its core, taking into account both domestic and international situations. It is an inevitable choice to address prominent issues of resource and environmental constraints and to achieve sustainable development for the Chinese nation. It is also a solemn commitment to building a community with a shared future for mankind.
28
2022-07
In recent years, with the continuous advancement of intelligent construction in coal mines, there are more and more intelligent mines and intelligent working faces, and the intelligent construction of coal mines is in full swing. Intelligent coal mines rely on intelligent equipment; while new equipment is being made intelligent, the existing coal mine equipment also needs to be upgraded and transformed intelligently. As a result, the service for the intelligent transformation and manufacturing of coal mine equipment has emerged, and companies providing intelligent transformation and manufacturing services for coal mines are...