Rock reamer hole opener, also known as trenchless technology, has been widely used in recent years.
Choose the rock reamer hole opener according to the type of traversed stratum, which is an important factor in selecting the size and type of the rock reamer hole opener. When expanding holes in soft rock formations, larger diameter expanders and fewer hole expansion times are allowed, and the size difference between adjacent stages of expanders can also be larger, with a difference of 100-150mm. When expanding holes in hard rock formations, the required diameter changes of the hole expander cannot be too large, with a difference of 50-100mm, and multiple hole expansions are adopted to achieve the best hole expansion efficiency and smooth discharge of drill cuttings.
Horizontal directional drilling is a high-risk industry, and accidents can occur at any time with a little carelessness. In order to meet the needs of replacing the hole expander or releasing stuck drills during a single hole expansion, the design of the rock reamer hole opener should also consider the function of reverse withdrawal of the drill hole. The main purpose of hole expansion is to remove the drill cuttings in the borehole, not just cut them down. Therefore, when selecting a hole expander, we hope that the generated drill cuttings are small enough to suspend the drill cuttings in mud and smoothly discharge them to the surface.
The rock reamer hole opener may encounter a series of problems after a period of use, such as inability to operate properly and various problems that occur during operation, which may result in the need to terminate the operation midway and affect business processes and performance. So why do these problems occur and how can we solve them?
First, let's explain why the rock reamer hole opener may encounter a series of problems after a period of use.
For example, if it cannot operate properly and problems occur after a short period of use, the first possibility is that it was not operated according to the operating procedures for the rock reamer hole opener's encounter with a series of problems after a period of use. There may be no regular lubrication, or inappropriate lubrication at the wrong time in a dry environment.
It is necessary to operate according to the operating procedures, perform regular and targeted lubrication for the rock reamer hole opener at the designated time and location, keep the rock reamer hole opener clean, and timely replace severely worn parts.