How to avoid the risk of open-pit mining, 24 prevention and control points to ensure production safety

(6) Stone open-pit mine road safety warning signs

Strengthen the road safety management of stone open pit mine, control the various safety risks of vehicles on the road, mine road safety warning signs are very important auxiliary means, which is of great significance to reduce the various safety risks of stone open pit mine road.

2. Safety risk points and prevention and control of electrical facilities in stone open-pit mines

The high mountains and far roads of the stone open-pit mines are mostly located in the underdeveloped and remote mountain villages, and the stone open-pit mines are mostly private enterprises, so there are many safety risk points in the electrical aspects of the mines, which is an important aspect of the safety risk prevention and control of stone open-pit mines.

The possible safety risks of electrical facilities in stone open-pit mines include mine power interruption, substation failure, electric shock accident for operators, and substation operation stop due to natural disasters.

Safety risks and prevention methods of electrical facilities in stone open-pit mines:

(1) Prevention and control of safety risks of high-voltage lines

Design the circuit according to the requirements of the factory and mine electricity code. The high voltage line maintenance and management personnel are all professionals who hold work certificates. Special personnel regularly check the use of high-voltage lines, and form inspection records; The hidden dangers in the inspection are rectified in time. The high-voltage line is strictly prohibited as the mining area, and there is a safe distance between the high-voltage line and the mining operation area. Necessary safety warning signs shall be set up in the high-voltage line area.

(2) Substation safety risk prevention and control

The safety risks of substation mainly include:

① External risk. The external risks of the substation are natural forces, and the impact of human damage on the normal operation of the substation. In order to prevent external risks, some signs should be set up at the substation where non-staff members are forbidden to enter, and walls or guardrails should be set up to prohibit outsiders and animals from entering.

(2) Natural environmental risks. Natural environmental risks are unavoidable for substations. Natural wind, frost, rain, snow, sun, these risk factors to the substation lines and equipment more or less caused varying degrees of damage, leading to a variety of safety accidents, power failures, and even the entire power system in serious cases. The prevention of natural environment risk is the focus of substation management.

③ Staff risk. In the control process of substation operation and maintenance risk, the staff's risk awareness and strong sense of responsibility are crucial to the normal operation of the substation. In addition, the substation maintenance staff left their posts without authorization, which increased the risk of substation operation and maintenance to a large extent. The types of lines and equipment in the substation are more complex and the number is larger, which has high requirements for the technical level of the substation maintenance personnel.

(3) Substation risk prevention and control

① Strengthen shift and duty management. This is not only the basis of substation safety management, but also a very important work. When the substation staff change over, they should carefully prepare for the handover, sort out and summarize the operation and maintenance of the substation equipment and lines, comprehensively check whether the equipment is in normal operation, record the inspection results in detail, do a good job in site environmental health and equipment cleaning, and carefully sort out the information. In the process of transition, the shift personnel need to inform the succession personnel of the substation operation, existing risks, maintenance and other related matters, so that the succession personnel have a certain understanding of the operation of the equipment. The replacement personnel shall comprehensively check the operation of the substation equipment, and complete the overhaul and maintenance work not completed by the shift personnel. For example, substation lighting inspection, data and maintenance tools inspection, etc., to determine the safety problems existing in the operation of equipment. After the succession personnel make it clear that all the operation of the substation is basically normal, the succession personnel can sign on the shift record to leave a certificate.

② Strengthen flood control management to prevent damage caused by rainwater to substations. In the daily operation and maintenance of the substation, it is necessary to be equipped with certain flood control equipment and materials, especially during the flood control period, the staff need to conduct a comprehensive inspection of the flood control equipment and materials in the substation to ensure that these equipment and materials do not fail, and the management of these equipment and materials by special personnel: It is necessary to thoroughly check the operation functions of various equipment in the substation, such as switches, mechanism boxes, relays, etc.