Rotary Drilling Rig How To Hit Granite, Will Not Hit Rock Look at This Article You Understand

A rotary drilling rig is a type of heavy equipment used in construction and civil engineering that is capable of drilling in different types of geological conditions, including granite. However, granite is a very hard rock that requires special handling and precautions to drill successfully. The following is a detailed introduction to the process of how the rotary drilling rig drills granite and what needs attention.

• Preparation

Before starting granite drilling with a rotary drilling rig, the following preparations need to be made:

1. Check the equipment: check whether the rotary drilling rig is normal, whether there is damage and failure. In particular, it is necessary to check the state of the rotary digging bit to ensure that it is in good working condition.

2. Select the drill bit and related tools: according to the hardness and depth of the granite, select the appropriate drill bit and related tools.

3. Protective measures: Wear appropriate protective equipment, such as safety helmet, gloves, protective shoes, etc.

• Granite drilling process

1. Determine the drilling point and depth: determine the drilling point and depth according to the needs of the project. When drilling in granite, it is necessary to avoid drilling along cracks in the granite as much as possible.

2. Pretreatment: Before drilling, pretreatment can be used to reduce the hardness of granite, such as the use of flame spray gun or high pressure water gun for pretreatment.

3. Start drilling: Place the rotary drilling bit on the determined drilling point, start the rotary drilling rig and start drilling. When drilling, the pressure and speed of the bit should be gradually increased until it can successfully enter the granite.

4. Control the drilling speed: During the drilling process, the drilling speed should be controlled according to the hardness and depth of granite. Too fast a drilling speed can cause damage to the bit or excessive wear.

5. Regular cleaning: In the process of drilling, granite will produce a large number of cuttings and debris. To avoid clogging the borehole, clean the borehole regularly. 6. Complete drilling: When the drill reaches the predetermined depth, stop the rotary drilling rig and remove the drill bit from the granite.

• Matters needing attention

1. Granite is a very hard rock, so some precautions need to be taken when drilling to ensure the successful completion of drilling and protect the safety of equipment and personnel:

2. Select the appropriate drill bit and related tools: the hardness of granite is high, and the appropriate drill bit and related tools need to be used for drilling. Selecting a bit that is too small or ill-fitting may result in bit damage or excessive wear.

3. Control the drilling speed: During the drilling process, it is necessary to gradually increase the pressure and speed of the bit, but pay attention to controlling the drilling speed to avoid excessive drilling speed resulting in damage or excessive wear of the bit.

4. Regular cleaning: In the process of drilling, granite will produce a large number of cuttings and debris. To avoid clogging the borehole, clean the borehole regularly. During the cleaning process, precautions should be taken to avoid damage to personnel and equipment caused by debris or debris.

5. Pretreatment: Before drilling, pretreatment can be used to reduce the hardness of granite, such as the use of flame spray gun or high pressure water gun for pretreatment. Pretreatment can not only reduce the difficulty of drilling, but also protect the safety of equipment and personnel.

6. Protective measures: When drilling operations, should wear appropriate protective equipment, such as safety helmet, gloves, protective shoes, etc. At the same time, pay attention to the damage caused by debris and debris to personnel and equipment.

7. Avoid drilling along cracks in granite: there are cracks and crevices in granite, but these places are usually fragile and easy to crack. Therefore, when drilling, drilling along cracks and crevices should be avoided as much as possible.

Prior to the granite drilling operation of a rotary drilling rig, it is necessary to do adequate preparation and take appropriate measures to protect the safety of equipment and personnel. At the same time, the drilling speed should be controlled according to the hardness and depth of the granite, and the drilling hole should be cleaned regularly to ensure the smooth completion of the drilling.