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(II) Differences between the capital construction investment projects and the contents of the project. Each construction project has its specific purpose, function and scale. The structure, space division, equipment configuration and interior and exterior decoration of each project are different. The requirements of the engineering content have their differences.
Each construction project of the mining project has special purposes, such as ground engineering, mine shaft engineering, and mechanical and electrical equipment installation engineering on the upper and lower sides of the mining project, so its structure, area, shape and decoration are also different. Therefore, construction projects can only calculate their investment separately for each project through different procedures.
(III) Determination of capital construction investment in mining projects Based on different construction contents and different construction stages, complex mining projects have different basis for determination, and are based on each other and guide each other, including budget quotas, budgetary quotas (indicators), and estimates. The relationship between the indicators, etc.; as well as the quotas and investment estimation indicators of the mining construction projects and the quotas and investment estimation indicators of the civil installation works.
(IV) A lot of basic construction investment is determined. The basic construction of the mining industry consists of a single project such as mining construction, civil engineering and installation engineering. Each individual project can be decomposed into individual unit projects that can be independently constructed. For example, the mine construction project can be divided into a wellbore project, a downhole roadway project, and a downhole room project. The following is broken down into divisional projects. The sub-projects can then be decomposed into sub-projects in more detail according to different construction methods, structures and specifications. It can be seen that there are many levels of determining the capital construction investment.
(V) Capital construction investment risks and adjustment status There are many links in the mining project, from the beginning of the investigation to the construction and commissioning, involving resources, geology, policies, and environmental risks. During the long period of project construction from project establishment to completion, there will be some unpredictable changes and impact on project investment. In terms of geological risks alone, there is currently a relatively large number of geological data that are not required for the project and the difficulty of underground construction that cannot be controlled or solved. The resulting engineering design changes, equipment, materials, labor price changes, national interest rates, exchange rate adjustments, and claims due to force majeure or human causes will inevitably lead to changes in construction investment. Therefore, the investment in mine construction projects has changed more during the entire construction period.
Mining project investment composition characteristics
(1) The amount of capital construction technology for mining projects is huge. The basic construction of mining projects consists of single projects such as mining construction, civil engineering and installation engineering. Therefore, compared with the general construction projects, the investment in construction projects is huge, tens of millions and billions. The huge amount of investment in construction projects makes it related to the major economic interests of the country, industry or region, and will have a major impact on the national economy and people's livelihood.