冰水堆积体开挖施工成本测算方法研究

摘要

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 difficumoreo-ver, no corresponding item can be referenced in the current budget quota , which causes inconvenience for the project bid quota-tion and construction cost control .Taking the rubble ice excavation of toe slab at the left bank of a hydropower station in the mid -dle 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 .%在近几年的水电工程地质勘探中，发现了冰水堆积体这一特殊地质结构物，因其特殊的结构及物理特性，导致开挖施工成本测算难度较大，而且现行的预算定额中没有相应的子目作为参考，给工程投标报价、施工成本控制等带来了不便。以金沙江中游某电站大坝左岸趾板冰水堆积体开挖施工为例，介绍了一种比例换算法，即先统计冰积体开挖所发生的实际钻孔机械及爆破器材耗用量，然后将其与《水电建设工程耗算定额》中X级岩石开挖的预算定额数据对比，得出两者之间的比例关系，并以此作为冰积体开挖施工钻爆的测算依据。可为类似工程建设管理活动提供借鉴。