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GB/T 50532-2021: Coal industry design code of repairing facilities for electro-mechanical equipment of mining district
Status: Valid GB/T 50532: Evolution and historical versions
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Coal industry design code of repairing facilities for electro-mechanical equipment of mining district
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Coal industry design code of repairing facilities for electro-mechanical equipment of mining district
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Basic data | Standard ID | GB/T 50532-2021 (GB/T50532-2021) | | Description (Translated English) | Coal industry design code of repairing facilities for electro-mechanical equipment of mining district | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | P70 | | Word Count Estimation | 109,137 | | Issuing agency(ies) | Ministry of Housing and Urban-Rural Development of the People's Republic of China; State Administration for Market Regulation | GB/T 50532-2021: Coal industry design code of repairing facilities for electro-mechanical equipment of mining district
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
1 General
1.0.1 This standard is formulated to implement relevant national and coal industry laws, regulations, guidelines, and policies, improve the design quality of electromechanical equipment repair facilities in coal industry mining areas, and unify technical requirements.
1.0.2 This standard is applicable to the engineering design of new construction, reconstruction and expansion of mechanical and electrical equipment repair facilities in underground mining and coal preparation plants.
1.0.3 The mechanical and electrical equipment repair facilities in the mining area should be designed according to the approved overall planning scale of the mining area, and can be built at one time or in stages according to the needs of the mechanical and electrical equipment repair facilities in the mining area construction progress.
1.0.4 In addition to this standard, the design of repair facilities for electromechanical equipment in mining areas shall also comply with the current relevant national standards.
2 Basic regulations
2.0.1 The new repair facilities for electromechanical equipment in mining areas should be composed of repair workshops and corresponding auxiliary facilities, and should be set up according to the amount of electromechanical equipment repairs and professional cooperation conditions.
2.0.2 When the existing capacity of the electromechanical equipment repair facilities in the mining area is insufficient, part of them can be newly built, expanded or rebuilt.
2.0.3 Public works such as power supply, heat supply, water supply, drainage, fire protection, communication, sewage treatment and off-site roads for electromechanical equipment repair facilities in the mining area should be centralized with other auxiliary enterprises in the mining area.
2.0.4 The tasks undertaken by the electromechanical equipment repair facilities in the mining area shall meet the following requirements.
1 Overhaul and general maintenance of mechanical and electrical equipment in mining areas;
2 Except for sporadic accessories, the new factory does not manufacture accessories in principle;
3 Except for U-shaped steel telescopic brackets and anchor rods, no other products are manufactured.
2.0.5 The scope of repair tasks for electromechanical equipment repair facilities in mining areas should be carried out in accordance with the provisions of Appendix A of this standard.
2.0.6 The calculation of the repair workload of mechanical and electrical equipment shall comply with the following regulations.
1 The amount of mechanical equipment repair should be calculated according to the number and quality of the equipment being repaired;
2 The amount of electrical equipment repair should be calculated according to the number, capacity and quality of the equipment;
3 The U-shaped steel telescopic support should be calculated according to the number and quality of the frames.
2.0.7 The annual repair task volume of electromechanical equipment repair facilities in the mining area shall be determined according to the number of equipment used (excluding the spare amount), and shall comply with the following regulations.
1 The repair amount of mechanical and electrical equipment shall be calculated according to the repair cycle and service life of the equipment;
2 The repair cycle and service life of mechanical equipment should be implemented in accordance with Appendix B of this standard;
3 The repair cycle and service life of electrical equipment should be implemented in accordance with Appendix C of this standard;
4.The manufacturing quantity of U-shaped steel telescopic support should be calculated according to the excavation rate of the mine and the service life of the support.
2.0.8 The working system of the electromechanical equipment repair facilities in the mining area shall comply with the following regulations.
1 One shift system should be used, and two shifts can be used when the repair volume is large;
2 Continuously operating equipment should adopt a three-shift system.
2.0.9 The design annual time base of process equipment for electromechanical equipment repair facilities in mining areas should be determined according to Table 2.0.9-1, and the design annual time base of workers should be determined according to Table 2.0.9-2.
3 Mechanical and electrical equipment repair facilities in mining area
3.1 General provisions
3.1.1 The workshop composition of the electromechanical equipment repair facilities in the mining area should be determined according to the type, specification and quantity of the electromechanical equipment in the mining area. Laboratory, warehouse, etc., and should meet the following requirements.
1 When the production tasks of electromechanical equipment repair facilities in the mining area are small, it is advisable to build a relatively centralized joint repair workshop;
2 When the annual overhaul of coal shearers and roadheaders in the mining area is relatively large, a mining machinery repair workshop can be set up separately;
3 When the annual repair volume of the hydraulic support in the mining area is relatively large, a repair workshop for the hydraulic support (including single hydraulic support) can be set up separately;
4 When the repair volume of trackless rubber-tyred vehicles in the mining area is relatively large, a repair workshop for trackless rubber-tyred vehicles in the mining area can be set up separately;
5 For workshops, warehouses and auxiliary buildings that are closely related to production and similar in nature, joint workshops, warehouses and multi-storey buildings should be built under the conditions of safety and sanitation.
3.1.2 The functional scope of each workshop of the electromechanical equipment repair facility in the mining area shall meet the following requirements.
1 The mine machinery repair workshop shall undertake the overhaul and general maintenance of machinery and equipment;
2 The mining machinery repair workshop shall undertake the overhaul and general maintenance of coal shearers, roadheaders and shuttle cars;
3 The hydraulic support repair workshop shall undertake the overhaul and general overhaul of the hydraulic support and the overhaul of the single hydraulic prop;
Machine tool workers can be calculated as one person per shift per machine; auxiliary workers can be calculated as 20% to 30% of the total number of production workers (repair workers and machine tool workers).
3.4.3 The useable area index for overhaul of hydraulic supports should not exceed the provisions in Table 3.4.3-1, and the useable area index for overhaul of single hydraulic props should not exceed the provisions in Table 3.4.3-2.
3.4.4 A cleaning site shall be set up in the hydraulic support repair workshop, and an indoor cleaning room shall be set up in severe cold regions. Each cleaning station can be configured according to 1 to 3 people. The indoor cleaning room shall meet the following requirements.
1 The construction parameters of the cleaning room should be determined according to the model parameters of the largest bracket that can be cleaned, and the indoor net height should be greater than the height of the bracket when it is fully raised;
2 The slope of the ground should be 0.2% to 0.3%, and drainage ditches should be set.
3.5 Electrical Equipment Repair Workshop
3.5.1 The electrical equipment repair workshop is mainly responsible for major repairs of electrical equipment such as various types of motors, transformers, mobile substations, feeder switches, magnetic starters, comprehensive protection devices, electrical control devices, mine safety monitoring plug-ins, general maintenance of some equipment and electrical maintenance. test.
3.5.2 The selection of the test power supply and main devices of the electrical test station shall meet the following requirements.
When the annual repair capacity is 45MW and above, the low-voltage power supply of the electrical test station should use a dedicated transformer, and when it is less than 45MW, a dedicated power line should be installed;
2.The capacity of the induction voltage regulator shall be determined according to the largest electric motor with a lot of repairs in this workshop;
3 It is advisable to set up two sets of withstand voltage test devices for high pressure and low pressure. The high voltage test should be accompanied by a transformer oil insulation withstand voltage test.
3.5.3 Repair workers should be assigned according to the repair schedule and repair quantity of various electrical equipment. There should be 2 to 6 repair workers for electrical control devices and mine safety monitoring plug-ins. Machine tool workers can be calculated as one person per shift per machine. There are 2 to 4 electrical test workers. Auxiliary production workers can be calculated as 7% to 10% of production workers (the sum of repairers, machine tool workers, and electrical test workers). The repair quantity index of repair workers should not be lower than the requirements in Table 3.5.3.
3.5.4 The usable area of the workshop shall be determined according to the technological layout of the repair work bench and equipment, and shall not exceed the provisions in Table 3.5.4.
3.6 Repair workshop for trackless rubber-tyred vehicles
3.6.1 The trackless rubber-tyred vehicle repair workshop shall be responsible for the overhaul, general maintenance and testing of trackless rubber-tyred vehicles such as cargo transport vehicles, personnel transport vehicles, scrapers, loaders and support trucks.
3.6.2 Trackless rubber-tyred vehicles should be maintained by the assembly interchange method, and should be repaired in batches in the workshop, and the overhaul time in the workshop should not exceed 30 days.
3.6.3 The overhaul index of trackless rubber-tyred vehicles should not exceed the provisions in Table 3.6.3.
3.6.4 The usable area index of the workshop should not exceed the provisions in Table 3.6.4.
3.6.5 The trackless rubber-tyred vehicle repair workshop should be equipped with a cleaning area not less than 50m2, a diesel engine test bench of 20m2~30m2 and a painting workshop not less than 40m2.
3.7 Riveting and welding repair workshop
3.7.1 The riveting and welding repair workshop should be equipped with a riveting and welding repair section and a hydraulic support metal structure repair section. When undertaking the task of manufacturing U-shaped steel telescopic brackets, a U-shaped steel telescopic bracket manufacturing section can be added.
3.7.2 The design of riveting and welding repair workshop shall meet the following requirements.
The 1 section is mainly responsible for the repair of metal structural parts of mine electromechanical equipment and the repair of the middle groove of the scraper conveyor. The annual repair amount is determined according to the actual needs of statistical analysis;
2.The index of repair quantity and usable area of the workshop section should not be lower than the provisions in Table 3.7.2.
3.7.3 The repair section of metal structural parts of hydraulic supports should be responsible for the repair of metal structural parts such as the front probe beam, top beam, cover beam and base of hydraulic supports. The usable area should not exceed the provisions in Table 3.7.3.
3.7.4 The design of the manufacturing section of the U-shaped steel telescopic bracket shall meet the following requirements.
1 Card cables should be outsourced for processing and manufacturing;
2 The index of personnel and workshop usable area in the section should not be lower than the provisions in Table 3.7.4.
3.8 Comprehensive auxiliary workshop
3.8.1 The main production part of the comprehensive auxiliary workshop should include repairing group, processing group, fitter group, pipe repair and sheet metal group, electrical equipment maintenance group, forging group and heat treatment group.
3.8.2 The configuration of main process equipment shall meet the following requirements.
1 Repair of old parts can be equipped with equipment such as laser cladding, surfacing welding, spraying (welding) and brush plating as required; electroplating should be outsourced;
2 Castings and complex forgings required for machine repair should be outsourced.
3.8.3 Workshop workers should be equipped according to the following indicators.
1 One person per shift for each lathe, and one person for each other metal cutting machine tools and old equipment. The number of fitters can be 50% to 100% of machine tool workers. Auxiliary workers can be 5% to 10% of the total number of production workers (machine tool workers and fitters).
2.2 to 5 pipe repair and metal workers (the larger value is taken for those with heating equipment).
3 2 to 8 electrical equipment maintenance workers.
4 The forging team can have 3 to 4 people for each forging hammer.
5 3 to 5 heat treatment workers.
3.8.4 The usable area of the workshop can be determined according to the following regulations.
1 The repairing, processing and fitter groups should be arranged according to the process, and should be calculated based on the occupation of 30m2 to 45m2 for each machine tool;
2.The pipe repair sheet metal group should be 30m2~50m2.When there is a boiler room, the pipe repair part can be arranged in the boiler room;
3 Electrical equipment maintenance group should be 30m2~50m2;
4 The forging group can be calculated as 120m2～150m2 occupied by each forging hammer;
5 The heat treatment group should be 120m2~150m2.
3.9 Measuring room and physical and chemical laboratory
3.9.1 The measurement room shall be composed of reference, measurement, repair and auxiliary parts, and its scale shall meet the following requirements.
1 Personnel should be equipped with 3 to 5 people;
2 The building area can be 60m2~90m2.
3.9.2 The physical and chemical laboratory shall be composed of chemical analysis, mechanical performance test and metal flaw detection. Its scale should not exceed the requirements in Table 3.9.2.
3.10 Warehouse
3.10.1 The warehouse should be composed of equipment storage to be repaired, accessory (spare) parts warehouse, equipment warehouse, finished product warehouse, metal material warehouse, oil chemical warehouse, oxygen cylinder acetylene cylinder warehouse, labor insurance miscellaneous goods warehouse, etc. Various warehouses can be combined or merged into relevant workshops according to specific conditions and relevant regulations.
3.10.2 The total construction scale of the warehouse should not exceed the requirements in Table 3.10.2.
3.10.3 The metal material warehouse can be equipped with 1 to 3 metal sawing machines, and the lifting and transportation equipment of each warehouse can be equipped according to the process requirements.
4 General plan transportation
4.0.1 The site of the electromechanical equipment repair facilities in the mining area shall be determined according to the approved overall planning of the mining area or the planning of the central auxiliary enterprise area of the mining area. Before the preparation of the preliminary design documents, the topography (land features, landforms), earthquake, meteorology, engineering geology and hydrogeology of the site should be further verified to confirm the feasibility of building the plant.
4.0.2 The general layout of the electromechanical equipment repair facilities in the mining area shall meet the following requirements.
1 It should meet the requirements of the main production process, make a good plan for the development of the early and late stages, arrange it reasonably, and save land;
2.The transportation inside and outside the factory should be adapted; the logistics and people flow lines in the factory area should be smooth and short, and the intersection of logistics and people flow lines should be avoided;
3 The natural conditions such as topography, geology, and meteorology should be used to arrange buildings reasonably; workshops with close process connections and large transportation volumes should be arranged nearby or set up joint workshops, and the buildings should have a good orientation;
4.According to the nature of workshop production, the layout should be divided into reasonable areas to avoid and reduce environmental pollution;
5 The plane layout of building groups should be combined with the space landscape environment and greening layout.
4.0.3 The land area of the electromechanical equipment repair facilities in the mining area shall comply with the current relevant national standards.
4.0.4 The vertical design of the factory area shall meet the following requirements.
1 The vertical design of the plant area should be considered in unison with the general layout of the plant area, and coordinated with the existing transportation lines and drainage systems outside the plant;
2 Production and transportation should have good conditions, and the factory area should not be threatened by floods and waterlogging;
3 The natural terrain should be used to reduce the amount of earthwork and earthwork, and it is advisable to achieve a balance between excavation and filling; when the natural terrain has a large slope, a mixed or stepped vertical arrangement can be adopted;
4 The flat slope of the site should be conducive to drainage.
4.0.5 The elevation of the entrances and exits of the factory area and the indoor and outdoor floors shall comply with the following regulations.
1.The elevation of the road surface at the entrance and exit of the factory area should be higher than the elevation of the road surface outside the factory;
2 The floor elevation in the factory building should be 0.20m or more higher than the outdoor (flat field elevation);
3 The floor elevation of the open-air operation site and open-air storage yard should be 0.10m or more higher than the average elevation, and a drainage slope of not less than 5‰ should be set;
4 When there are storage battery track flat cars between the workshops, the relationship between the floor elevations in the workshops should be well coordinated;
5 For flammable, combustible and environmentally polluting liquid warehouses that may leak, the indoor floor elevation should be 0.15m lower than the outdoor (flat field elevation) (the threshold is partially higher than the outdoor flat field elevation by 0.15m).
4.0.6 The flood control design of the factory area shall meet the following requirements.
1 The return period of the factory area flood control standard should not be less than 50 years. When the observed flood level is higher than the flood control design standard, it should be designed according to the observed flood level; when the observed flood level is lower than the flood control design standard, it should be designed according to the flood control design standard.
2 The flood flow in the flood control design shall be calculated by using the existing measured data or according to the data and regional characteristics, choose an appropriate method or use multiple methods to calculate and compare.
3 The flood control design elevation shall be determined according to the calculated water level (including backwater and storm attack height) plus the safety height during the design flood return period. The safety height shall be 0.5m in plain areas and 1.0m in mountainous areas.
4.0.7 The in-plant and out-of-plant transportation of electromechanical equipment repair facilities in mining areas should comply with the following regulations.
1 The transportation of repair equipment, materials, and supplies in bulk should be transported by road, and the transportation force should be resolved by the society;
2 Under the condition of reasonable technology and economy, railway transportation can be adopted;
3 For the transportation of sporadic materials and daily living materials of the whole plant, it is advisable to equip appropriate amount of trucks;
4 It is advisable to equip appropriate amount of working vehicles and engineering vehicles for business contacts and external maintenance tasks outside the factory;
5 For in-factory transportation, forklifts and battery rail flatbeds should be selected respectively according to the task volume;
6 The equipment of transport vehicles should meet the requirements in Table 4.0.7.
4.0.8 The design of roads in the factory area shall comply with the current national standard "Code for Design of Factory and Mine Roads" GB J 22, and should meet the following requirements.
1 When there is only one entrance and exit in the factory area, the surface width of the main road should be 7.0m to 9.0m; when there are two or more entrances and exits in the factory area, the surface width of the main road should be 6.0m to 7.0m;
The pavement width of secondary arterial roads should be 4.0m~6.0m;
3 Main roads and secondary roads should adopt cement concrete surface course or asphalt concrete surface course, and the pavement surface course should adopt the same type;
4 The road type should adopt urban type.
4.0.9 The greening layout of the factory area shall meet the following requirements.
1 The greening of the factory area should be considered uniformly with the general layout and coordinated with the greening plan of the city (or region); rationally use the non-building land and sporadic corner space in the factory area for greening, and the green area rate should not exceed 20%, and should not be less than 15%. %;
2 The greening layout should be arranged in combination with the factory capacity, landscape and environment, focusing on the main roads and main entrances and exits of the factory area, production management areas, workshops emitting harmful gases, heat, dust and high noise, workshops and buildings exposed to the west;
3 The selection of greening plants should be based on the natural conditions of each region, and the tree species with strong adaptability, long growth period and strong regeneration ability should be selected according to local conditions.
4.0.10 The comprehensive layout of pipelines in the factory area shall comply with the relevant provisions of the current national standard "Code for General Layout Design of Industrial Enterprises" GB 50187.
5 Factory buildings
5.1 General provisions
5.1.1 The factory building design of the electromechanical equipment repair facilities in the mining area should have original data such as earthquake, meteorology, recent measured topographic maps, and engineering geology and hydrogeology at the corresponding stage.
5.1.2 The architectural design of the plant area shall comply with the relevant provisions of the current national standard GB/T 50002 "Harmonized Standard for Building Modulus" and GB/T 50006 "Harmonized Standard for Building Modulus of Factory Buildings".
5.1.3 The architectural design of the factory area should adopt the national standard atlas and the stereotyped structural parts in the area. New energy-saving building materials should be reasonably selected for the enclosure structure of the factory building.
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