DTH is short for “down-the-hole”. Since the DTH method was originally developed to drill large-diameter holes downwards in surface-drilling applications, its name originated from the fact that the percussion mechanism followed the bit down into the hole. Applications were later found for the DTH method underground, where the direction of drilling is generally upwards instead of downwards. [pdf]
The Christensen range of surface core drilling rigs has, over many years, established itself a reputation for reliability and ease of use. Many Christensen rigs are available on a simple platform, a trailer platform, with crawler tracks or a truck-based solution. Certain Christensen models are available with a. .
The Boyles C5/C5C surface core drilling rig is compact, yet powerful. Its compact design makes it easy to position and transport, even by helicopter. During helicopter transport,. .
For underground core drilling exploration tasks, Epiroc offers the well-established and trusted Diamec range of machines. Diamec rigs are available in a wide variety of forms. The. [pdf]
Urban redevelopment projects present unique challenges and drilling in these sensitive areas can be particularly difficult. One of the key challenges faced by drillers is the need to minimize disturbance to th. [pdf]
With five sizes available, finding the right hammer is defined by hole size and the ground drilling conditions. Just match the hammer as closely as possible to the required hole size, leaving sufficient space to allo. [pdf]
A down-the-hole drill, usually called DTH by most professionals, is basically a screwed on the bottom of a . The fast hammer action breaks hard rock into small cuttings and dust that are evacuated by a fluid (air, water or ). The DTH hammer is one of the fastest ways to drill hard rock. The system is thought to have been invented independently by Stenuic. [pdf]
A down-the-hole drill, usually called DTH by most professionals, is basically a screwed on the bottom of a . The fast hammer action breaks hard rock into small cuttings and dust that are evacuated by a fluid (air, water or ). The DTH hammer is one of the fastest ways to drill hard rock. The system is thought to have been invented independently by Stenuic. [pdf]
Choosing the right Terranox DTH hammer for a drilling project requires careful consideration of several factors. The following are some of the factors that should be considered when selecting a hammer: Boreh. [pdf]
Urban redevelopment projects present unique challenges and drilling in these sensitive areas can be particularly difficult. One of the key challenges faced by drillers is the need to minimize disturbance to th. [pdf]
A down-the-hole drill, usually called DTH by most professionals, is basically a screwed on the bottom of a . The fast hammer action breaks hard rock into small cuttings and dust that are evacuated by a fluid (air, water or ). The DTH hammer is one of the fastest ways to drill hard rock. The system is thought to have been invented independently by Stenuic. [pdf]
Horizontal Directional drilling began with the principles of vertical drilling turned sideways. At first, these rudimentary practices could only complete narrow, two to three-inch diameter bores for short distances s. [pdf]
JK730-2 crawler mounted automatic rod exchange DTH drill rig is a hydraulic DTH drill rig. It is equipped with automatic rod changer for rod storage, changing and connecting automatically, as well as hole loc. [pdf]
A is first thought to have been used for rock drilling in 1844. Many quarries used hand held tools that required the driller to suspend himself from a rope over the quarry face in order to place the drill hole in the required position. This system used small diameter holes and was not only terribly inefficient, but very dangerous due to flying rock as a result of the inaccuracy of the drilled borehole. [pdf]
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