引汉济渭秦岭隧洞工程投资控制的关键问题研究

发布时间：2018-05-26 02:52

本文选题：引汉济渭 + 秦岭隧洞　；参考：《隧道建设》2017年09期

【摘要】：为进一步加强引汉济渭秦岭隧洞工程投资的控制,确保陕西省引汉济渭调水工程按期完成,针对水利部概算"编规"的局限性,在现有法律法规和定额的基础上,重点研究了4个关键问题的解决方法:1)"编规"对引水隧洞项目的划分较粗,无法满足秦岭隧洞工区多、费用组成复杂的要求,设计采用金字塔型分工区结构进行概算组织;2)进口硬岩TBM掘进设备购置费高、断面单一,难以反复利用,"编规"仅在石方开挖单价中计取设备折旧费将使施工单位面临巨亏,设计采用折旧费由施工单位和业主分摊的方案达到了风险共担的目的;3)秦岭隧洞最大独头通风距离达到16 km,超越了"编规"最大12 km的极限,设计采用二次曲线拟合,准确确定TBM轴流通风机调整系数;4)"编规"中隧洞排水费已包含在临时设施费内综合考虑,不单独计列,无法适应多次穿越富水层的秦岭隧洞,设计根据预测涌水量和排水方案计算排水费,使概算合理,留有余地。
[Abstract]:In order to further strengthen the investment control of the Qinling tunnel project, and to ensure the completion of the water diversion project in Shaanxi Province on schedule, in view of the limitations of the "compilation rules" of the budget estimates of the Ministry of Water Resources, and on the basis of the existing laws, regulations and quotas, This paper focuses on the solution of four key problems: (1) the division of diversion tunnel project by "compiling rules" is relatively coarse, which can not meet the requirements of the Qinling tunnel with more work areas and complicated cost composition. The design adopts pyramidal division of labor area structure to organize the budget estimate. (2) the purchase cost of imported hard rock TBM driving equipment is high, the section is single, and it is difficult to use it repeatedly. The "compilation rules" will only calculate the depreciation cost of the equipment in the unit price of stone excavation, which will make the construction unit face huge losses. The design adopts the scheme that the depreciation cost is shared by the construction unit and the owner to achieve the goal of risk sharing. The maximum single-head ventilation distance of the Qinling tunnel reaches 16 km, which exceeds the limit of the maximum 12 km of the "code". The design adopts conic fitting. Determining accurately the adjustment coefficient of TBM axial fan (4) the tunnel drainage fee has been included in the temporary installation fee in the compilation of regulations, which is not separately counted and can not be adapted to the Qinling tunnel that passes through the water-rich layer many times. The design calculates the drainage fee according to the forecast discharge quantity and drainage scheme, which makes the estimate reasonable and leeway.
【作者单位】：铁道第一勘察设计院集团有限公司;
【分类号】：TV512;TV554

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