Rock Drilling

Nowadays rock drilling is a very widespread and necessary activity for the extraction of minerals from the earth, construction of roads, tunnels, access roads, bridges, foundations for the construction of buildings, water wells, etc.

For each purpose, there are specific drilling methods appropriate to the requirements that are required, to the investment, speed of realization, quality of the land, environmental conditions, etc.

The drilling of the rocks is the first activity carried out in the field of blasting and aims to open holes with the proper distribution and geometry within the rock mass.

Once the rock is drilled in the hole, the explosives, and their initiation accessories are placed to finally execute the blasting and extraction of the necessary material, according to the project to be executed there are several rock drilling systems, the same ones that have been developed according to the application.

In general, the methods can be classified in the following:

  • Mechanics: percussion, rotation, and broken percussion.
  • Thermal: blowtorch, a hot fluid, freezing.
  • Hydraulics: water jet, erosion, cavitation.
  • Sonics: high-frequency vibration.
  • Chemicals: micro blasting, dissolution, and expansion.
  • Electrics: electric arc, magnetic induction.
  • Seismic: Laser beam.
  • Nuclear: fusion, fission.

Percussion drilling and rotation

It is the most basic and ancient in its kind since it began to be used thousands of years ago by the use of stone tools.

Then, with the discovery and use of metals, was perfected by creating tools increasingly refined, such as the old steel hammer to drill wells of water and oil (Shank Method), reaching the special steel tools that they are currently used, such as drill bits with hard metal inserts, bars, couplets, butts, and DTH hammer.

These, in conjunction with pneumatic and hydraulic drilling machines, operating from the surface and inside the well.

Its application is in all types of rocks, especially rocks with a medium, hard, hard and abrasive hardness, such as granite, andesite, magnetite, hematite, etc.

Rotary drilling by cutting or slicing

It consists of the use of helicoidal bits with knives of frontal cuts that go slicing the material from the bottom of the hole and evacuating the detritus through the use of also helical bars.

Its application is only in very soft and soft rocks, such as clays, sandstones, slates, etc.

Drilling by crushing

It consists of the use of large, powerful and heavy rotary drilling equipment that act by applying strong thrust on a rotary drill, which is usually provided with three cones with tungsten carbide inserts.

Each cone revolves around its axis and the inserts penetrate the rock surface, producing fracturing and dismemberment in small particles that are commonly evacuated by compressed air.

This method is the most used in the drilling of oil wells and open-pit mining in large deposits.

Its application is in all types of rocks and in general to remove large volumes of material. The range of diameters of most widespread use ranges from 5.25 “to 18”.

Abrasive drilling

It consists of the use of rotating equipment with cylindrical drill bits whose attack surface is provided with diamond inserts or impregnated with this material. Its purpose is to drill the rock through abrasion or high friction.

Its main application is to obtain witnesses in soil drilling for the subsequent analysis of the samples.

Choosing The Best Built-In BBQ’s

As the entertaining outdoor spaces continue growing, built-in BBQ’s are becoming the hot ticket accessories for outdoor kitchens. There are several choices available but limited by your budget and imagination. From the portable charcoal grill to the high-end, expensive models, there is a grill model that can meet all your needs. However, when shopping for the best built-in BBQ’s, there are some simple tips you need to keep in mind. These are:

Come up with a budget

Yes, it may look to be a fun process trolling the internet or flipping through glossy magazines for the best built-in BBQ’s, but the best way to start is to come with a budget. It is true that are several options to go depending on your budget. With your hundred dollars or thousands of dollars in hand, there’re numerous options available without going over that amount. However, you need to establish your budget in the first case, through which you will ensure that you’re investing on the best built-in BBQ’s that won’t break the bank.

As for the case of other home improvement projects, it is an essential idea to leave some space at the budget’s top, which will cover the inevitable unexpected expenses. A good example is where you have a budget of 20, 000 US dollars and then spend it all to purchase a high-end gas grill, without keeping in mind that you’re required to make some payments for the gas line hookup. Therefore, it is vital to inventorying each associated cost so that you can come up with an accurate estimate. However, if you leave a wiggle space at the top of the budget for surprises accounting, you can make the entire purchasing process less stressful, and even end up preventing some headaches down the road.

Conduct survey of the available space

It is true that the available space plays an essential role same as for the case of the budget. It does not matter how fabulous the grill is, since purchasing it won’t make sense if it is not in a position of fitting the designated area. For those building a brand new kitchen, then space cannot be a limitation issue. However, you need to take consideration in grill placement and its layout so that it becomes easy to determine the size of the available space.

If you’re retrofitting the grill to an existing outdoor kitchen, then the available space becomes the major issue when purchasing the right grill. If you want to get the best fit, consider measuring the space of the grill, and in this case take measurements from one side to another, from front to back,  and from top to bottom. With these measurements in hand, it will be easier to find the perfect grill as per the available space.

Therefore, whenever searching for the best grill, consider looking at the space dimensions first, after you will make the best decisions.

What are your needs?

Other than budget and space, you also need to figure out your needs and wants before making a decision. Which type of cooking do you prefer? Do you want a grill that will be in a position of functioning throughout the year? Are planning to get a grill that serves only the family members or large crowds within your backyard? Finally, evaluate the type, power, and size of the grill you want.