Down-the-hole hammer drilling is a technique used primarily for drilling boreholes in hard rock applications. It employs a pneumatic hammer, situated directly at the drill bit, to deliver high-impact blows that effectively break up the rock. This method contrasts with traditional rotary drilling, where the drill bit operates at the surface and relies on torque and weight to penetrate the ground.

Downhole Drilling Equipment An Overview

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2. Rock drill: used to drill holes with a diameter of 20 ~ 100 mm and a depth of less than 20 meters in rocks above medium and hard. According to its different power can be divided into pneumatic, internal combustion, hydraulic and electric rock drill, of which pneumatic rock drill is the most widely used.

Нэмж хэлэхэд, чулуу бутлуурын плита нь засвар үйлчилгээ, солилцооны явцад ихээхэн ач холбогдолтой. Түүний эд анги, гадаад хэлбэр, зураас, элэгдэл зэргээс шалтгаалаад заслын үйл явц ихээхэн урт хугацаа шаарддаг. Иймд, плитаа тогтмол хянах, шаардлагатай үед засвар үйлчилгээ хийх, материалыг шалгах нь чухал юм.

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Understanding Submarine Hammer Drilling

3. DTH Drills (Down-The-Hole Drills) These drills are known for their efficiency in drilling deep holes in hard rock. They feature a hammer located directly on the drill bit, which creates high-frequency impacts, breaking rock more effectively.