Characteristics And Application Scope Of Horizontal Directional Drilling Rig

1、 Features

1. The construction process is simple, operable and easy to organize and implement; After the site survey, the crossing line is designed, the drill bit and pipeline are connected, and the drilling rig is in place, the construction can be started.

2. It does not pollute the environment, does not affect traffic, and has little damage to the ground, which can meet the high environmental protection requirements of urban underground pipe network construction.

3. Low cost, significant social and economic benefits, can reduce excavation administrative approval, facilitate construction organization, and low comprehensive cost.

4. The safety is good. Due to the pipe pulling construction, the construction personnel operate on the ground, which avoids the influence of adverse construction conditions such as deep foundation pit operation and improves the safety factor.

5. The pipeline connection quality is good, because the pipeline connection is carried out on the ground, and the single section of pipeline connection is qualified, and then the pipe is pulled and laid at one time, which improves the pipeline connection quality.

6. The construction period is short. Compared with the traditional "trenching and pipe burying method", the construction period is greatly shortened. There is no need to transport and stack soil, but only a small amount of mud needs to be transported.

2、 Scope of application

1. This construction method is applicable to municipal water supply and drainage construction.

2. This construction method is a trenchless pipe laying technology, which is applicable to the laying of pipelines crossing rivers, lakes, buildings and other obstacles, as well as the construction of urban municipal underground pipe networks that are not suitable for excavation.

3. It is applicable to various strata without boulders, including water bearing strata, not applicable to gravel layer, and generally used in soft soil layer.

4. The applicable pipes are steel pipes and PE pipes, with a pipe diameter of 200-1200mm and a maximum length of 1500m.

5. Due to the limitation of the detection depth of the detector, the maximum depth of guided drilling is 15m.