Product Introduction LEANOMS
The Symmetrix Overburden Drilling System is a drilling system designed specifically to handle overburden or unconsolidated formation conditions. Such systems are typically used on projects with complex geological conditions and are designed to address the challenges encountered when drilling in these geological conditions.
The core feature of the Symmetrix Overburden Drilling System is its casing advancement mechanism. In this system, the casing has a special design, including an inner and outer double barrel structure. This design allows casing to be pushed into the formation while drilling, stabilizing the hole and preventing formation collapse. This is critical for safe and efficient drilling in overburden where loose, unstable or large rocks are present.
Applicant LEANOMS
Applications：
Symmetrix Overburden Drilling System can be employed in a variety of situations when drilling in challenging ground conditions is necessary. Examples of the most typical uses include the ones below.
Geothermal well drilling
Due to both financial benefits and environmental considerations, geothermal heating of homes is becoming more and more popular. Drilling through the overburden is frequently done using Symmetrix Overburden Drilling System, which maintain the hole open during the installation of the heat exchange system and lessen the impact on nearby structures.
Water well drilling
Drilling for water wells is frequent in developed, metropolitan settings where the well has to be dug swiftly with
little environmental damage. In practically any ground condition, Atlas Copco has a solution that may be employed with tiny, compact rigs (using the DTH drilling technique).
Pipe roofing
To guarantee that excavation may proceed safely, pipe roofing is a technique for pre-strengthening the earth around a tunnel face. Around the excavation line, a steel casing is put in place in the shape of an umbrella to create a protective arch that the tunnel may pass through.
Construction Work
Casing advancement systems are becoming more and more common for both end-bearing and friction piles due to the strict productivity requirements, excellent drilling accuracy, and capability to drill inclined piles for foundation construction.
Anchoring
Ground anchors, also known as tieback anchors, are widely used everywhere. Usually, they are put in place to support slopes or other buildings. They can be erected as a single or Symmetrix Overburden Drilling System support, alone or in conjunction with a retaining wall construction.
Specification LEANOMS
how it work LEANOMS
Symmetrix Overburden Drilling System is a casing advancement system that releases air on the side of the pilot bit. It controls the flow of air through the unique design of its pilot
and ring bits.
The air feed hole is on the side of the pilot, instead of the front, which redirects the air against the inner wall of the ring bit thus decreasing the kinetic energy of the air. The ring bit is extended and directs the air flow across the face.
This controls the spread and intensity of flushing on the area that matters, preventing air escape and damage to the surrounding formation.
Symmetrix Overburden Drilling System has a unique bit face design and extended ring bit that minimizes air loss into the surrounding formation.
The locking mechanism in the pilot of the Symmetrix Overburden Drilling System redirects the air within the drilling area. This decreases the air pressure just enough to get an efficient flushing. The intensity of the air that reaches the surrounding soil is significantly lower.
A conventional DTH drilling system directs the compressed air from the air feed holes straight into the ground with high intensity, causing the air to rapidly escape to surrounding foundations.
Because air is not released from the face of the pilot bit, the Symmetrix Overburden Drilling System would be the preferred safe system when working in highly sensitive ground conditions.
