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随着工业和民用建筑的发展,包括热网在内的地下管线的建设也将迅速增长。如所周知,热网建设的造价较高,一般为整个供热设施投资的百分之五十以上。国外经验表明,在不降低热网的建造技术水平的条件下,从传统的地沟敷设方式转为无地沟敷设方式,可使热网造价降低,并且可以缩短热网的建设周期。为了供国内热网建设工作者参考,今将苏联热力管线无地沟敷设技术介绍如下。
With the development of industrial and civil buildings, the construction of underground pipelines, including heat networks, will also grow rapidly. As we all know, the cost of heating network construction is relatively high, generally more than 50% of the investment in the entire heating facilities. According to foreign experience, under the condition of not lowering the construction technology level of the heat grid, the shift from the traditional trench laying method to the non-ground trench laying method can reduce the heating network construction cost and shorten the heating network construction period. In order to provide reference for domestic heating network construction workers, the technology for laying trenchless trenches in the Soviet Union’s thermal pipeline is described below.