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1. What is horizontal directional drilling? Horizontal directional drilling rig is a construction machine that lays a variety of underground utilities (pipes, cables, etc.) without excavating the ground surface. It is widely used in flexible pipelines such as water supply, electricity, telecommunications, natural gas, gas, and oil. During paving construction, it is suitable for sand, clay, and other ground conditions, …

Trenchless construction: 11 technical difficulties of horizontal drilling 1. Stuck drill Stuck drilling is a common technical difficulty in hole reaming. In case of stuck drilling, analyze the cause and deal with it. 1. When colliding with the underground pipeline, the drill bit is stuck, the drill bit is pulled out, the drill pipe is pulled back, the drill rig …

In the classification of horizontal directional drilling rigs, this hydraulic type and the pipe jacking of the earth pressure balance type are both very good practices when they are used. When people use them rationally, they can indeed bring better results. Some good advantages, this classification can be better used according to the distinguishing aspects of people’s use, so people …

In the directional drilling process of trenchless drilling rigs, the drill bit moves in two ways, reverse drilling and only pushing. When reverse drilling, the direction does not change, and the orbit line is a straight line; when pushing, the law changes, and the orbit force is in the underground space curve. In this way, the entire drilling track is …

1. Overview of mud pumps 1. Introduction The mud pump is a reciprocating plunger pump, which converts the rotation of the motor into the reciprocating linear movement of the crosshead and the piston through the crank connecting rod mechanism, and compresses the low-pressure mud into high-pressure mud. During the construction of directional drilling, the high-viscosity, high-density and high-sand-content mud is …

If extreme weather is encountered during trenchless construction, what should be done after the horizontal directional drill is wading through the water? First check the integrity of the machine: observe a few more times around the machine to see if any parts are missing; if there is any blockage of foreign matter; if there is water. In particular, the foreign …

Horizontal directional drilling technology combines traditional geological survey core technology with horizontal directional drilling technology, supplemented by in-hole testing technology, which can intuitively and accurately understand the adverse geological conditions in front of the tunnel head. At present, this technology has been applied in the geological survey of tunnels at home and abroad, but it also has disadvantages such as …

Modern trenchless construction technology originated in Japan, the United Kingdom and the United States in the late 1960s. Due to its technical advantages, it has been widely promoted all over the world. In 1986, the International Association for Trenchless Technology (ISTT) was established in London. -International Society for Trenchless technology). Trenchless construction techniques mainly include horizontal directional drilling construction and …

A successful trenchless project requires not only high-performance equipment, but also construction skills. Among them, the mud deployment is very important. The mud mixing determines the success of the wall fixing and whether the drill pipe of HDD MACHINE can rotate smoothly. The following introduces some special geological mud mixing tips. 1. Clay When the underground soil meets the clay, …

On the morning of May 22, XCMG horizontal directional drilling rigs, known as ground-penetrators and traversing masters, once again set off an upsurge in Guangzhou, Yangcheng. The total value of the orders signed at the XCMG Trenchless Product Promotion Conference exceeded 10 million. The prospect of trenchless construction is broad Although the non-excavation technology using horizontal directional drilling rigs is …

XCMG XZ11600 horizontal directional drilling rig + XMP2800 mud pumping station, the super combination, helped Jiangsu to build the Yancheng Binhai LNG supporting gas pipeline Binhai-Xuyi project (Second Tender Section). The successful tow pipe marked the victory of the first battle of the Subei Irrigation Main Canal crossing project! 1.A hundred miles away, on-site and off-site linkage guidance In order …

Recently, the “hero posts” that have crossed the circle have become popular, but due to their length and construction difficulty, many excellent non-excavation industry insiders have been discouraged. XCMG XZ6600 horizontal directional drilling rig is unveiled! 1.Use strength as a “stepping stone” The “stepping stone” of this mega project is the outstanding performance of XCMG XZ6600 horizontal directional drilling rig …