High fall laying of 252 kV XLPE cable;

Discussion of laying theory of prefabricated heat preservation pipe;

Paying attention to the multifunction of the cable tray during laying and regarding the cable tray as the focus of laying during designing ensure the erection quality and apparent quality.

Analysis of fault caused by installation of submarine XLPE power cables;

Structural analysis and Installation of marine VFD cable

With the development of city construction,the overhead power transmission/distribution conductors in urban areas are being replaced gradually by underground cable installations.

Construction method of laying polybutene pipelines for room floor heating;

Points to be considered in the selection of the cable,quantity,environment and mode of cable laying as well as cautions for use of the cable are proposed based on the authors own experience in this field.

It introduces the laying method of large－diameter steel pipes and p roblems ap peared during construction.

It summarizes several ways of pipeline laying in that re-gion and some insulatio n materials as well as related techniques.

Caterpillar rock trencher will play an important role in practical pipeline laying process.

Secondly, it discuss es some practical problems on the design such as the system composition, the way s of pipeline laying, stem pipes and thermameters installing.