Therefore, the standardized mining of quarries should be actively promoted.
Several points of safe mining:
I. Promote the management of standardized mining in quarry
The joint and reorganization of collective and individual quarries will expand the scale of quarry mining and increase production capacity. Reasonable layout of mining resources mining points and mining scale to achieve large-scale mining.
Strengthen the organization and coordination of social organizations and technical forces, promote the safe investment in quarry mining, and use advanced controlled blasting techniques and mining techniques to promote the research of new methods for standardized mining of different types of quarries.
According to the status of production safety assessment of non-coal mines, the establishment of standardized demonstration area mining, demonstration sites. Strengthen the basic knowledge of safety management and blasting technology training for the person in charge of the quarry, production management personnel and employees.
Second, play the main role of standardized mining in quarry
The quarry should strengthen the safety production management, improve the safe production conditions, play the main role of safety production, and take active and effective measures to organize the implementation of the quarry in accordance with the provisions of the Law on Safety Production and the Law on Mine Safety. Standardized mining work.
Third, give full play to the technical support and service role of intermediary organizations
The mining of quarries is mostly township (town), village collectives and individual enterprises. The scale of mining is small, the safety investment is seriously insufficient, the cultural level of the employees is low, the technical equipment is backward, and the medium and deep hole differential blasting technology is mastered and utilized. The ability of high-level small-layer stratified irregular small-step differential blasting technology and regular small-step differential blasting technology is very limited, especially in economically underdeveloped areas, advanced blasting technology and mining schemes are more difficult to promote. The promotion task is very difficult. This reality determines the promotion of standardized mining technology and must rely on the technical support and services of the intermediary technology service organization. Therefore, the relative concentration of the quarry area, make full use of technical resources and social enterprises, human resources and capital advantages, multi-channel, multi-form build blasting technology consulting intermediary services organizations, providing regional blasting technology and construction technology Service is conducive to the application and promotion of standardized mining technology.
Fourth, strengthen the supervision and enforcement of the standard mining of quarry
Strengthen the coordination and coordination of government departments, establish and improve the safety access system for non-coal mines. The permission for the start of the quarry must be checked and issued from the source, the education and training, the safety conditions, and the mining standards. Generally, it shall have a quarry mining plan or preliminary design document that has passed the examination, have production technical conditions and safety guarantee conditions that meet the safety requirements of quarry mining, and obtain business licenses and mining licenses according to the procedures stipulated by relevant laws and regulations. Only the explosives use license, the mine manager's safety qualification certificate, and the special operator's operation permit can be engaged in mining activities.
The three is a pipe fittings and a pipe connection. It is also called pipe fittings three or three way fittings, and three way joints are used in the main pipe to branch.
The three link is with three ports, namely, an import, two exits, or two imports, a chemical pipe for an outlet, a T and a Y shape, an equal diameter pipe and a different diameter pipe, used in three same or different pipeline collection. The main function of the three pass is to change the direction of the fluid.
Classification according to the size of pipe diameter:
1, the ends of the ends of the equal diameter three links are all of the same size.
2, the diameter of the three way main pipe takes the same size, and the size of the branch pipe is smaller than the nozzle size of the main pipe.
Material division:Carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon leaching, PVC and so on.
Dividing by making methods:top making, pressing, forging, casting, etc.
Dividing by manufacturing standards:National standard, electric standard, chemical standard, water mark, American Standard, German standard, Japanese standard, Russian standard and so on.
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