Shigatse excavation and modification of hydraulic down-the-hole drilling rig

What is down-the-hole (DTH) drilling?

Down-the-hole (DTH) drilling has made it easier for contractors to drill wells faster and more efficiently, and to transition from dirt boring to rock boring just by adding a compressor and hammer to the drill bit.

How do drill rigs work?

Conventional drilling rigs use the power of an electric motor or a diesel engine, which is transmitted to the turntable through the operating system to drive the drill bit connected to the drill rod to grind and cut the rock to achieve the purpose of drilling. This kind of drill first solves the ground power.

What is a DTH drill rig?

DTH Drill Rig: The DTH drill rig is a powerful, mobile machine that serves as the core equipment for DTH drilling operations. It is equipped with the necessary power to operate the DTH hammer and drill bits. These rigs are often mounted on either tracked or wheeled chassis, providing high mobility across various terrains.

How does a down-the-hole drill work?

In down-the-hole drilling a drill rod is fitted with a hammer at its lower end. The hammer, which is mounted on the drill bit, is activated through the addition of compressed air and driven into the ground – simultaneously rotating and impacting. A flushing current collects the loosened drill cuttings and conveys them upwards.

What is a down-the-hole drilling method?

The video shows the down-the-hole drilling method for very hard soil or rock. A rotary drilling rig, type LB 20, working with down-the-hole hammer inside a casing. A flushing current conveys the loosened drill cuttings upwards and exits at the upper end of the casing.

How can a drill rig be rehabilitated?

Periodic rehabilitation, which ought to be carried out on a regular basis, can remove deposits before they harden with age. Typical workouts like this might consist of employing a truck or trailer-mounted compressor of the type normally used during drilling (minimum capacity 7 bar-100 psi).