关键词: 冰水堆积体, 开挖施工, 成本测算, X级岩石, 预算定额

Abstract:

In geological prospecting for hydropower engineering in the past years, a special geological structure called rubble ice was discovered. Because of its special structure and physical properties, the calculation of excavation cost is difficult; moreover, no corresponding item can be referenced in the current budget quota, which causes inconvenience for the project bid quotation and construction cost control. Taking the rubble ice excavation of toe slab at the left bank of a hydropower station in the middle reach of Jinshajiang River as an example, a proportional convention calculation method was introduced. The actual drilling machine and blasting equipment consumption in rubble-ice excavation were calculated first, which was then compared with the budget quota of X grade rock excavation in consumption quota of hydropower construction project, so as to obtain the consumption relationship between rubble ice and X grade rock. It can be used as the calculation basis of rubble ice excavation.

Key words: rubble ice, excavation construction, cost calculation, X grade rock, budget quota