Study On The Project Pricing Method Of Colliery Construction Under The Bill Of Quantities Mode

The process of construction project rose spirally with the rapid development of national economy; governments at all levels had devoted much more manpower, material and financial resources to mine construction engineering. But the shortage of mine construction funds is becoming a bottleneck for project construction and progress. Thereby, mine construction engineering cost management is turn into an important research topic in engineering construction field. Project pricing is a premise for engineering cost control, only ensure the timeliness and accuracy of project pricing at investment decision stage, the occurrence of engineering cost will be seized effectively in the process of cost management, and the investment and social benefits will be heightened, mean while, the loss of fixed assets investment will be depressed.The project pricing method of colliery construction, which receives many experts and scholars’much concern in recent years, is investigated and researched in the paper, then, the fuzzy CBR (Case-based Reasoning) method, which suitable for mine construction engineering, is elicited. The fast pricing system based on fuzzy CBR method includes the constitution of partial consumption subsystem and the creation of comprehensive unit price. And the principle, steps and implementation strategies of CBR is discussed in detailed; the concept, framework and representation of standard case are proposed. Main characteristic factors for the estimation of engineering similarity are analyzed; the judgment matrix of similarity degree and the consistency test method are structured, then, the most resembling case with drafting project is searched in case base, and the consumption of manpower, materials and equipment for drafting project is obtained, the calculation method of similarity degree and weight factor is researched, and therefore, the retrieval precision is strengthened. Finally, the problem of time character in exponential smoothing model is translated into ordinal matter in mathematic, so the synthetically unit pricing model is established based on exponential smoothing one, and the feasibility of the model is validated by practical case. On the basis of the research and analysis mentioned above, the case-based reasoning method is first applied to colliery construction project pricing system, and the practical verification is performed, therefore, the CBR method will bring guidance suggestion and significant meaning to the implementation of the mine construction intelligent pricing.