通信用塑料管材土壤埋藏试验研究

目的研究通信用塑料管材在土壤中对光缆保护的长期可靠性。方法将各种通信用塑料管材在拉萨、格尔木、库尔勒、鹰潭等4个土壤环境比较严酷的试验站进行自然埋藏试验,定期测量土壤环境因素和土壤微生物数据,观察管材外观及力学性能变化规律,分析其与环境条件之间的关系。结果经过长达8年的埋设试验,除部分管材出现变色外,各种通信用塑料管材的主要力学性能保持良好,土壤的理化性质及微生物活动对它们影响不大。结论通信用塑料管材在土壤中能长期有效地保护通信光缆,穿管敷设光缆是可靠的方式。

Research on Plastic Pipes for Communication Buried in Soil

Objective To study long-term reliability of plastic pipes for telecommunication to protect optical fiber cables. Methods By means of naturally burying various plastic pipes for telecommunication in soil at different testing sites such as Lhasa, Geermu, Kuerle and Yingtan where the soil environments were harsh and periodically testing soil factors and soil microbes, the changes of their appearances and mechanical performances and the relation to the environment were studied. Results Except for individual color changes, the pipes kept their main mechanical performances well after the specimens were buried underground for 8 years. The physicochemical properties of soil and soil microbes had little effect on them. Conclusion Plastic pipes for telecommunication could protect optical fiber cables for a long time in soil. Hiding the cables in plastic pipes is a reliable way to construct underground telecommunication route.