Coal mine communication system

Coal mine communication system

The coal mine communication system is one of the six major coal mine systems, and it occupies a pivotal position in coal production. The coal mine communication system communication system realizes communication and contact by sending and receiving communication signals in production, dispatching, management, rescue and other links. System, including wired communication system and wireless communication system.

System introductionedit

The coal mine communication system has digital voice two-way non-blocking communication, one key in place, group calling, full calling, selective calling, forced demolition, forced interruption, monitoring|listening, emergency calling (emergency light alarm), Chinese name display and location of the dispatching station , Automatic recording function (can be recommended for more than 1 year), call history record query and other basic functions of the coal mine dispatch communication system industry (national acceptance standard function)! It also has functions such as internal and external multi-party teleconference, IP converged communication, one-key outbound direct dialing, group ring back tone, voice message and more! .

System compositionedit

The coal mine communication system consists of the host equipment of the dispatching computer room system (digital program-controlled dispatching switch, telephone recording box, mine safety coupler, lightning protection distribution frame, backup power supply, etc. and ground wire engineering), dispatching room operating platform (PC Computer host, dispatching console (button type and touch screen type), wiring system (ground wiring is not required, underground wiring by mining communication cables, mining junction boxes, mining telephone lines, etc.) and terminal equipment (ground ordinary telephones) , Underground explosion-proof telephone) and other four parts!

Coal communication requirementsedit

Because coal production is mainly operated underground, there is a harsh working environment (small working area, poor lighting, humidity, corrosiveness), many unsafe factors (mainly threats of water, fire, gas, roof accidents, etc.), personnel and equipment Many special factors such as high liquidity. From the perspective of the production operation process, the underground mine also has the characteristics of multi-work combined flow operation. This kind of operation often involves a lot of heavy equipment. The transportation, installation, and debugging cooperation between the equipment requires high requirements, and the information transmission must be timely ,accurate. At the same time, the management department and production auxiliary links of the coal mine ground have all the characteristics of ground factory production. Therefore, the coal mine communication network must not only meet the needs of underground safety and production, but also meet the needs of surface production, command, management, and people's lives.

(2) Highly reliable production scheduling communication system as guarantee

Due to many special factors in coal production, the professional scheduling system must be placed in a prominent position in coal production. In addition to the establishment of an administrative communication system, a professional dispatch communication system for production and coal washing must also be established, and they must be connected to each other.

(3) Satisfy the demand for communication information volume under the new situation

In the era of planned economy, the amount of internal communication information in coal mine communications was large, while the amount of external communication and communication between mines was small. With the advent of the market economy, coal mines have more and more foreign exchanges, and the exchanges between coal mines within the bureau have also increased, and the amount of external information has greatly increased. Therefore, the construction of the communication system must fully recognize this change in the amount of information, so that the network design can not only meet the needs of internal production and operation, but also meet the needs of external connections.

(4) The modernization of coal mine production places higher and higher communication requirements

With the continuous improvement of the modernization of coal production, the requirements for communication means and system functions are also increasing. Ensuring that communication information can be transmitted in a timely, accurate and fast manner is extremely important for coal production and management. Optical cables, digital microwaves, and digital program-controlled switches should be widely used in mine communication systems, and broadband Internet access, wireless communication, image transmission, etc. must also be basically popularized in mines.

(5) The safety of coal mines has received increasing attention from all parties.

Underground communication means in coal mines must be more and more perfect, especially for underground emergency communication systems. In addition, the intrinsically safe communication system in coal mines needs to be promoted and applied, and explosion-proof telephones must be eliminated.

Construction principlesedit

(1) Unified planning, scientifically and reasonably constructing a digital communication network that satisfies mine production, safety, operation, and people’s daily life, forming a variety of means, covering both the underground and the underground, achieving flexible and reliable vertical dispatching, smooth communication within and outside the mine, and mobile communication (wireless Communication) in a timely manner, which can ensure the wide expansibility of the emergency communication business scope and the three-dimensional communication network with strong flexibility.

(2) The newly-built mine communication network should be designed at the height of big communication, to ensure that the communication system is operable, manageable, and can be smoothly upgraded to continuously meet the new requirements for communication under the conditions of the market economy.

(3) Networking with multiple services such as data and image to form a broadband integrated service digital network. The transformation of the existing communication network must make good use of existing resources and achieve a combination of short-term and long-term, which is in line with the actual situation and adapts to future development. Especially for issues that have a greater impact on network development and business development such as the layout, network structure, and switching functions of the bureau (subsidiary), it is necessary to analyze with advanced awareness to avoid large-scale network transformation in the near future , Lay a good foundation for the development of the coal private network, and better serve production and life. Achieve "one plan, step-by-step implementation, one investment, long-term benefit".

(4) Not only can it meet the usual communication needs, but also can ensure emergency communication in various natural disasters, mine accidents and other situations.

(5) Adhere to the principle of synchronous development with the public network. It is necessary to use NO.7 signaling to connect with the private network of the mining area or the public telecommunication network to make the communication of the coal mine develop from a closed type to an open type. Allowing coal mine phone users to use the mine phone to communicate with outsiders is the same as using the public network phone.

(6) Try to adopt dual routes and two outlets to improve the reliability and security of the transmission network.

Networking mode editing

For a modern mine, its communication system must complement each other for administrative and dispatching communications, complemented by wired and wireless communication methods, and ensured by emergency communications, so that there is greater room for development. Only in this way, the communication network can not only guarantee the needs of coal production, safety, operation and people's lives, but also realize the communication guarantee in emergency situations, and lay the foundation for the evolution to the next-generation network. Therefore, the new coal mine communication network will be a network that integrates security, management, scalability, and survivability. Without such a network support, it is difficult for communication to ensure the normal progress of coal mine safety production, and it is difficult to adapt to the needs of coal mine development. Figure 1 below is the specific networking mode of the coal network.

Based on years of on-site communication management experience, the coal network networking mode shows that there is an administrative switch, a production dispatch switch, and a coal washing plant special dispatch switch (some mines do not have an independent coal washing plant, so this switch is not installed). Equipped with some underground wired and wireless communication systems constitute an ideal coal mine communication network.

(1) Administrative communication system

The system mainly provides communication guarantee for the management of mine production and operation and people's lives. The administrative communication system occupies a dominant position in the coal mine communication network. Especially in the era of market economy, coal mine communications must move towards operable, which means that administrative communications must not only meet the status quo of telephone calls, but must also stand at the height of large communications and operable, focusing on equipment operation reliability and value-added services. Development capabilities, comprehensive billing capabilities and tandem capabilities, etc., continue to meet the needs of coal mine communications to go to the market.

The selection of administrative switches is generally carried out under the guidance of the communication development plan of the entire mining area. [1] It is not recommended for each mine to do its own way, so as to avoid problems such as multiple types of equipment on the communication network of the mining area, difficulty in networking, and limited value-added services. As the communication private network of the mining bureau, its network structure should be the "central office with remote module" networking mode is the most reasonable. This is a problem of the networking mode of the private communication network of the mining area and will not be discussed here.

(2) Production scheduling communication system

This system is one of the important means in coal mine safety production management, and it plays a very important role in coal production. On the ground, it is an indispensable and important supplementary part of the administrative communication system, because the coal mine production regulations stipulate that two sets of administrative and production communication equipment should be installed on the ground such as winch house, central substation and other key parts to ensure that one system fails. Another system can meet the needs of production. In the underground, the production scheduling communication system is the main communication means, and the information of each production link in the underground is mainly transmitted through this system. The main requirement for the production scheduling communication system is reliable operation. It is not necessary to develop value-added services and install a billing system in the system.

(3) Coal washing dispatching communication system

The coal washing plant has multiple production links and complex systems, which play a very important role in the operation of coal mines. Because it is not very closely related to underground production, when considering the networking mode, the coal washing plant should build a set of dispatch communication system independently for the production dispatch command in the plant. The dispatcher must realize NO.1 signaling networking with the mine administration and production communication systems.

(4) Computer, safety monitoring and monitoring system

There are many types of supporting systems such as mine computers, safety monitoring, and monitoring systems, with different transmission signal formats. Various information in the system must be timely transmitted to the main dispatching room of the mine. At the same time, part of the information must be entered into the production dispatch communication system for relevant departments to grasp. Therefore, the production dispatch communication system is required to have various expandable interfaces and be able to network with each system.