Principles To Be Followed In Selecting Crawler DTH Drill Rig

Crawler Mounted Drilling Rig is used more and more widely in grouting operation. Grouting reinforcement is mostly open-air operation. This paper mainly discusses how to choose the model of crawler-type down-the-hole drilling rig. The following principles should be adhered to when choosing.

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(1) Applicability in production

In order to meet the needs of Engineering construction, the selected drilling rigs should be rationally allocated according to the construction tasks undertaken by enterprises under normal conditions, and the scope of application of drilling rigs should be fully considered. They should not only meet the current construction needs, but also take into account the needs of drilling rigs under other production conditions in the future. Only the drilling rigs with strong applicability in production can better show their investment effects.

(2) Advanced Technology

While meeting the production needs, it is necessary to maintain the advanced performance indicators, which is conducive to extending its technical life and facing elimination in the short term. In the long run, it meets the requirements of sustainable development of enterprises and protects investment more effectively.

(3) Operationality and maintainability

Simple operation, easy for workers to master the operation skills, shorten the auxiliary operation time, such as site leveling, drill rig displacement, drill rig lifting, drill pipe replacement, air-water valve regulation, etc.

The Crawler DTH Drill Rig structure is simple and easy to repair, the parts are universal, and the supply of goods is sufficient, which can reduce the purchase price of parts, equipment operation and management costs. Drilling rig maintenance is very difficult, technical support and after-sales service are guaranteed. In case of mechanical failure, on-site maintenance workers can repair it in time, which can avoid delaying construction production due to waiting for technical rescue from the manufacturer.

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(4) Safety and environmental performance

At present, the state attaches great importance to the safety and environmental protection of products. When purchasing new equipment, attention should be paid to manufacturing materials, whether all kinds of safety devices are complete, construction noise, whether exhaust gas and waste discharge meet the requirements of relevant national laws and regulations.

(5) Economic rationality

The Comacchio GEO line drill rigs are designed as multipurpose units, able to meet the different requirements and needs related to geotechnical site investigation projects.

The GEO line includes a wide range of models installed on (steel or rubber) crawler tracks, ranging from lightweight and small footprint units ideally suited for small geotechnical site investigation and environmental drilling projects inside buildings or in areas of restricted space, heli-portable solutions, to heavy-duty machines with a weight class up to 22 tonnes. The flexible design of Comacchio GEO rigs and the use of a comprehensive choice of rotary equipment and on-board accessories ensures that each set-up incorporates the ability to perform multiple drilling types from the same rig. Comacchio GEO line rigs can adapt to virtually any rotary drilling application, as well as rotary percussion drilling techniques, in all geological formations. Moreover, our GEO rigs can be configured for Sonic drilling for ground investigations in challenging ground conditions. Typically, our geotechnical site investigation equipment is used to:

produce high quality core samples;
perform percussive sampling;
carry out in situ mechanical property testing (e.g. Standard Penetration Test – SPT or Direct Push Probing – DPP);
install borehole instrumentation for long-term monitoring of ground conditions;
perform deep wireline coring;
perform open hole drilling techniques, including solid or hollow stem augering.

A range of solutions can be offered to deal with operational limitations due to access, confined space, emission controls etc.

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