采空区架空输电线路防护大板基础造价研究

Cost research on large plate foundation of electric transmission lines in goaf

煤炭资源的大规模开采使得许多电力送出线路必须经过煤矿采空区。现阶段采取的主要技术方案包括路径尽量避让采空区、采用防护大板基础、预留煤柱、对采动影响区进行地基处理等。对较为经济可行的大板基础工程量进行总结,测算得出±800 kV,500 kV,220 kV等典型大板基础在不同地形和地质条件下的技术经济指标,其可作为方案比选、测算投资,亦可作为技经人员、评审人员的现阶段参考标准。

As a result of the large-scale exploitation of coal resources,many power transmission lines have to pass through goaf.In response to this problem,the main technical solutions adopted at the present stage include setting lines away from the goaf,using the large plate foundation,reserving coal pillars,and doing the ground treatment for the range of influence,of which using the large plate foundation is a more economically viable solution.According to the plate foundation design implemented in Shanxi province,this paper summarizes the engineering quantity of the plate foundation.Meantime,this article shows technical and economical indicators of typical large plate foundation under different voltage classes in various of geological conditions.These technical and economic indicators can be used as a reference for other schemes,and can also be used as a reference standard for budgeters and reviewers.