Engineering measures to reduce project cost?

Coal mine construction, civil engineering and installation engineering are integrated, and the quota implementation span is large, which leads to high cost budget and large investment. Therefore, how to do a good job in long-term construction planning, reduce project costs and improve mine benefits is of great significance. This paper expounds the concrete measures to reduce the engineering cost of coal mine construction projects.

After the integration of 20 10 coal resources in Jinneng Group, there are *** 165 mines. At present, there are 50 coal production mines in the Group, 12 joint trial operation mines, and the rest are infrastructure mines. Due to the influence of capital investment, current market conditions, safety management and other factors, capital construction mines are all built in batches, and most of them are in a state of suspension. As the capital mine, the ground office building, power distribution station, air compressor room, lifting machine room, ventilation machine room and water treatment station are all necessary projects. Due to the shortage of reserves in the previous integrated mine, irregular underground mining, few available working faces, and the increase in the annual output of the integrated mine, the service life of the mine ranges from ten years to five or six years. In view of the current coal market situation and the long-term development of the company, changing the brick-concrete structure machine room into a steel structure machine room can effectively reduce the project cost and play a very important role in realizing the expected economic and social benefits of the project [1].

1 cost of brick-concrete structure machine room

The cost of the machine room with brick-concrete structure mainly lies in foundation excavation, steel bars, cement, bricks, sand and gravel, doors and windows, water and electricity heating and labor costs. See table 1 for the comprehensive cost statistics of the brick-concrete structure computer room project.

2 steel structure room fee

The cost of steel structure machine room mainly lies in foundation excavation, steel, plate, water and electricity heating and labor costs. The comprehensive cost statistics of the existing steel structure machine room project are shown in Table 2, which includes labor costs.

3 project cost comparison

Different materials are used in the ground machine room of capital construction mine, and the project cost varies greatly [2]. Compared with brick-concrete structure, the cost of steel structure is 97.7 1 yuan /m2 lower than that of brick-concrete structure, and the cost is reduced by 1 1.66%, which is the direct cost. Due to the partial integration of mine mining 15# coal seam, the calorific value of coal is about 4000 kcal, the market price is low, and the mine production cost is high. Due to the short service life of some mines, considering the mine cost input and economic benefits, it is finally decided to adopt the steel structure machine room, which not only meets the requirements of the current mine, but also lays the foundation for the next mine construction, reducing the cost and maximizing the benefits with the most reasonable input.

4 superiority

With the development of China's manufacturing industry, the utilization rate of steel structure housing is increasing [3], which has great advantages in terms of cost, construction period, usable area and economic benefits. 4. 1 project cost comparison From the selection of building materials in the early stage and the labor cost in the later stage, the cost of steel structure housing is about 15% lower than that of concrete houses. At the same time, the installation and construction speed in steel structure housing is fast, and the supporting facilities are built simultaneously, which shortens the construction period and saves labor costs. 4.2 Using space contrast as mine ground machine room, equipped with large-scale fixed equipment, requires higher space and height. The steel structure house has large span, wide internal space and flexible use, which can generally expand the use area by 5%~ 10%, and can fully meet the normal production needs of the mine. 4.3 Comparison of disaster resistance: With its geometric stability [4], rigidity and toughness, steel structure buildings can stand firm in the face of earthquakes, strong winds, mine surface collapse or other disasters, ensuring that the production requirements are met. 4.4 Energy saving and environmental protection Compared with the construction in steel structure housing, it reduces the use of concrete and bricks, reduces the overall foundation excavation, and is beneficial to environmental protection, especially the foundation part. Steel structure housing needs less soil and does little damage to land resources. At the same time, when mine resources are exhausted, steel structure housing is easy to dismantle, and steel can be recycled and transferred to other newly-built mines. One-time investment will benefit for a long time, reduce environmental harm and achieve certain economic benefits for the company's long-term development.

5 conclusion

Traditional coal mine construction projects have long cycle, large investment and slow effect. In view of the current coal market, only through careful planning and design, based on the long-term, perfect control, reducing engineering costs, low-cost operation, and giving full play to internal power, can we strive for the maximization of safety, economic and social benefits for mine construction and the long-term development of the company.

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