​Basic Performance Requirements for Multi Functional Anchoring Drilling Rigs in Drilling Operations

Basic Performance Requirements for Multi Functional Anchoring Drilling Rigs in Drilling Operations

China's vast territory encompasses extremely diverse geological formations between its eastern, western, northern, and southern regions, resulting in highly complex geological conditions for anchoring construction. Consequently, there are some specific performance requirements for Multi Functional Anchoring Drilling Rigs.

In the mountainous areas of western China and the southeastern coast, high mountains and treacherous roads make transportation extremely inconvenient. Equipment is mostly operated on manually built scaffolding, creating significant difficulties in relocating and transporting construction machinery. Furthermore, prolonged orogenic movements have formed extensive fissured and fragmented strata, ancient landslide areas, and loose accumulation layers. Construction in these complex formations is prone to hole accidents such as borehole collapse, stuck drills, and buried drills. Construction equipment and tools are highly susceptible to damage under these complex loads. Therefore, Multi Functional Anchoring Drilling Rigs and tools operating under these complex geological conditions must possess the following excellent performance characteristics:

The Multi Functional Anchoring Drilling Rig must have a high torque output with a certain reserve coefficient to overcome complex variations in drilling load and stuck drill phenomena within the borehole.

It must have strong lifting (pullback) capacity to implement forceful pulling measures when complex situations like rockfall or collapse occur in the hole, preventing stuck drill and buried drill accidents.

It must possess a wide speed regulation range to adapt to the need for varying rotational speeds when employing different drilling methods in soil layers, rock layers, and other diverse strata conditions.

A long feed stroke is crucial for improving drilling efficiency and employing the casing-while-drilling method; generally, the feed stroke should be no less than 1.8 to 2 meters.

It should have minimal weight and convenient disassembly/assembly capabilities. For construction in mountainous areas with poor transportation access and on high slopes, this not only reduces labor intensity during equipment relocation but also decreases auxiliary operation time, contributing to improved overall construction efficiency.

The mechanization level for screwing/unscrewing drill tools should be high, allowing mechanical make-up and break-out of drill strings under significant load conditions to reduce labor intensity.

The Multi Functional Anchoring Drilling Rig should have good guiding performance to facilitate maintaining borehole straightness.

The Multi Functional Anchoring Drilling Rig should possess strong adaptability to various techniques, capable of meeting the needs of multiple drilling process methods such as conventional rotary drilling, down-the-hole hammer (DTH) drilling, auger drilling, and casing-while-drilling.

The Multi Functional Anchoring Drilling Rig and drill tools must have high reliability, withstand the challenges of complex formation load variations, and be easy to maintain. Hydraulic motors, pumps, and directional control valves are the core components of the rig. To ensure the reliability of the drill rig, it is essential to select high-quality products.