Pipes made of plastic material, due to their great advantages: Convenient constructionThe project cost is lower than that of steel pipesThere is no corrosion leakage problemLess pollution to the transported substances In recent years, it has been widely used in the construction of urban buried pipeline network. We often use it when delivering gas and...Read More

Trenchless technology has been around for 100 years. As the economy grows, people understand its superiority. As a result, many large and medium-sized cities in China Many countries have adopted this technology. So this paper provides a brief overview of its role and technical applications Equipment used for trenchless technology: various types of geotechnical drilling...Read More

▲ Number of probe holes The number of exploratory holes depends on the stratigraphic conditions at the planned crossing site and trenchless horizontal directional drilling length of the crossing. If the crossing length is 300 m (1000 FT), one borehole on each side of the crossing site is sufficient, and if the borehole results indicate...Read More

●Roads Heavy equipment is required on both sides of the construction site. In order to reduce costs, roads leading to both sides of the construction site should use existing roads as much as possible to reduce the distance of new roads, or use the construction right-of-way of the pipeline line, and all relevant agreements for...Read More

1.Development and Use Horizontal directional drilling technology first appeared in the 1970s as a combination of traditional road perforation and oilfield directional drilling technology, which has become a popular construction method for transporting oil, natural gas, petrochemical products, water, sewage and other materials and for construction of various types of pipelines for electric power and...Read More

With the rapid development of China’s urbanization level, many cities have formed a large scale and intricate underground pipe network tracer line system, frequent changes of underground pipe network, a large amount of information needs to be managed and processed, the traditional inefficient manual management method is difficult to adapt to the needs of this...Read More

Detection background Detection address: a gas pipeline inspection company in HaikouDetection instrument: vLP3 (vLoc3-Pro) pipeline detector, DM3 (vLoc3-DM) anti-corrosion layer detector Detection process The first test point City gas pipeline, according to the requirements need to detect the gas pipeline direction and corrosion-resistant layer breakage point to find. Transmitter red line connected to the target...Read More

1. Undergrounding wire structure: Undergrounding wire attached to plastic. Since the microwave physical ground penetrating radar cannot detect plastic pipes. Tracer wire will cause obstacles to future repairs and other constructions. Therefore, when laying, attach a metal wire to the plastic pipe. It can provide response signs for subsequent maintenance and construction. 2. Tracer wire...Read More

Urban underground plastic pipes play an important role in every modern city. It is the infrastructure on which the city depends for its survival and development. plastic pipes low temperature resistanceGood toughness, rigid and flexibleConvenient constructionlower cost than copper pipesCorrosion resistance, andSmall pollution to the transported material However, although plastic pipes have many of the...Read More

Abstract: The copper conductor tracer wire has limitations in terms of tensile strength and is prone to breakage during construction. We need to find a tracer wire with a good combination of signal and strength.The following paper evaluates the resistance, tensile strength and signal properties of copper-clad steel tracer wire. We can find that copper-clad...Read More