How does DTH hammer work?
How does DTH hammer work?
The DTH hammer is pneumatically powered, with the compressed air propelling it forward to impact and fracture rock. Compressed air also travels through the drill bit into the hole (air exhaust), which blows the chips and dust out of the hole.
How does DTH drilling work?
In DTH drilling, the drill string rotates while the drilling hammer continuously strikes down into the rock. Inside the hammer, a piston powered by compressed air gives the drill bit its striking power. This combined with the rotational movement means the rock is crushed in a very efficient manner.
What is a DTH rig?
DTH Drilling Rig Since the DTH method was originally developed to drill large-diameter holes downwards in surface-drilling applications. DTHis short for “Down-The-Hole”. In DTH drilling, the percussion mechanism commonly called the hammer is located directly behind the drill bit.
Is top hammer drilling vs down the hole drilling?
Down the hole (DTH) drilling Adapt to hard rock and rock formation conditions (compared to top hammer). Mainly use pressurized air for slag flushing, and sometimes air foam for special application. Highly efficient in hard rock drilling (compared to the rotary drilling).
What does down the hole hammer ( DTH hammer ) mean?
Definition – What does Down the Hole Hammer (DTH Hammer) mean? A down-the-hole hammer (DTH hammer) is a tool that can be attached to the end of a drill string and inserted into a bore. It’s a small jack hammer used to break hard rock into small particles that can be flushed away by the DTH hammer’s air exhaust.
How does the working principle of led work?
Working Principle of LED: The working principle of LED works on the quantum principle. According to quantum theory, electrons move from high energy levels to low energy levels. When energy is released from a photon, the distance between the two levels of photon energy is the same
How does the working principle of the light emitting diode work?
The working principle of the Light emitting diode is based on the quantum theory. The quantum theory says that when the electron comes down from the higher energy level to the lower energy level then, the energy emits from the photon. The photon energy is equal to the energy gap between these two energy levels.
How does a p-n junction in a led work?
Like a normal diode, the LED consists of a chip of semiconducting material impregnated, or doped with impurities to create a p-n, (positive / negative)junction. Atoms in the n-type material have extra electrons, atoms in the p- type material have electron holes. 16 How They Work(cont.) Applying current pushes the atoms toward the junction.