Classifications

• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B7/00—Special methods or apparatus for drilling
  • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B10/00—Drill bits
  • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
  • E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B10/00—Drill bits
  • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B10/00—Drill bits
  • E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe

Definitions

• Tunnel drilling is a challenge facing civilization for many centuries. These are relatively expensive and time consuming works, as they require studies, several technologies and complex executive processes that are dimensioned according to variables such as: application, dimensions and mainly geotechnical geological characteristics of the massif to be traversed, but the economic and social benefits are numerous. Tunnels have become a milestone in the development of civilizations and empires, as in ancient Rome through the implementation of tunnels and water supply passages, freight transport and access between cities, enabling the expansion of urban borders and territories.
• the tunnels are presented not only as a solution for subway works but also as an excellent solution for social mobility in the cities of S ⁇ o Paulo, Rio de Janeiro, Belo Horizonte, Fortaleza and Salvador, like the big cities like London and New York, but also as a solution.
• For road works as in the case of the North Ring Road in Serra da Cantareira (SP), New Ascent of Serra de Petrópolis (RJ), Via Expressa and Binary to replace the Perimetral Via in the Port Zone of Rio de Janeiro (RJ), also apply to railway works such as the North & South Railway, Dams and Hydroelectric Dams, Pipelines, among other applications.
• TBM Tunnel Boring Machine
• TBM Tumornel Boring Machine
• TMM New Austrian Tunneling Method
• LAM Ladislaus von Rabcewicz, Leopold Muller, and Franz Pacher, 1962, Austria
• Injected Tubing The most common technique of treatment and stabilization of the rock for advancing tunnel excavation is the use of Injected Tubing. This technique consists of performing a series of perforations tangent to the contour of the tunnels to be excavated. They are thus performed with positive inclination towards the tunnel, especially concentrated in the tunnel ceiling for its complete stabilization, allowing the excavation of the tunnel.
• This process is performed in three operations:
• Jet Grouting consist of soil erosion (erosive process), using high pressures applied to the soil formation of cement columns, therefore more susceptible to significant repression depending on the geological-geotechnical conditions of the massif where will run the tunnel, especially the low coverage.
• the state of the art of this process consists of two or three operations: 1 a 4 to 5 inch (100 to 125 mm) diameter Drill through drill rods and triconic drills;
• the steel pipe is plugged into the borehole to inject grout through the headline valves installed along the steel pipe or in some cases a shutter is inserted into the steel pipe to perform the injection of cement grout in a partial way (in different horizons) isolating different headlines.
• the holder of the present patent through experience gained over 27 years running tunnel treatment, introduces a new Tunnel Treatment Process and Device through the execution of Self-Coated and Self-Injectable Tubular Filings in a single operation. 15 000072
• the three phases in one step providing time savings, lower cost and greater security. They are achievable in any type of soil, with horizontal, vertical and inclined perforations, allowing them to be applicable to a range of services in addition to injected tubular lines for tunnel treatment, as well as special foundations, solidification, retaining and other related.
• the Tunnel Treatment Process and Device through the Self-Coated and Self-Injecting Tubular Filings applied to the tunnel treatment is performed in a single operation, that is, drilling is performed with Schedule steel pipe or similarly, concomitantly with grout injection according to controlled pressures and as determined by the designer, from low to high pressures, with better grout volume control. Therefore, as the mass is treated by injection of grout, It makes the frame by inserting the Schedule steel pipe or similar, minimizing the deformation of the massif and consequent superficial repressions in materials with any geological-geotechnical characteristics.
• HIDROBIT ® Tool in elongated cylindrical shape, developed in special steel for drilling in soils, rocks, rock blocks, boulders, and materials with SPT 50 blows or high rock consistency.
• Drill Shoe It is internally coupled to the Drill Shoe through a self-locking system that transmits the rotational motion of the drill and rotopercussive impact through the Top Hammer or DTH (Down The Hole Hammer) bottom hammer to the joint, thus allowing simultaneous drilling and grout injection to advance.
• This self-locking system also allows HIDROBIT ® to be retrievable, ie it is withdrawn upon completion of the already drilled, armed and injected tubing for use on other injected tubing.
• It has two front holes that allow the passage of stabilizing fluid and / or compressed air used in drilling. It also has a side orifice for fitting the Injector Nozzle, through which the grout is injected simultaneously to the perforation, which is internally valved for directing the fluid.
• Punching Shoe Ring-shaped piercing element by which the HIDROBIT ® is coupled. Also developed in special steel for drilling in soils, rocks, rock blocks, boulders, and materials with SPT> 50 blows or high rock consistency.
• HIDROBIT® It is coupled externally to HIDROBIT® via the self-locking system described above.
• the Drill Shoe has a special rotary system consisting of a fixed part that allows free rotation of the shoe. This fixed part is threaded (can also be welded) to the Schedule or similar steel pipe, which will serve as a frame for the Filing. By advancing the drilling, the Shoe carries the Schedule or similar steel pipe, inserting it internally into the bore during simultaneous injection of grout.
• Special Injector Nozzle Element that directs the flow of injection of radial grout to the perforation and can be directed with varying inclinations, pressures, volumes and velocity. It was developed in steel special to withstand low to high pressures and has a shape that allows uniform injection of the perforated section by the HIDROBIT ® set and Punch Shoe. This is coupled to the lateral HIDROBIT® office, through which the cement grout is injected radially taking advantage of the rotation movement of the perforation, performing the injection concomitantly with the perforation.
• Figure 1 Side View of the Set
• FIG. 1 Top View of the Set (Injector Nozzle Detail);
• FIG. 1 Front View of the Assembly
• Figure 5 Side View of HIDROBIT ® ;
• Figure 6 Bottom View of HIDROBIT ® (Self-Locking System Detail);
• Figure 7 is a perspective sectional view of the recoverable HIDROBIT ® tool set and drill shoe.
• the new device is basically made up of two parts, one internal, recoverable HIDROBIT ® tool (1) and one external, drill shoe (2), which work together, being joined by means of a self-locking device (6).
• the recoverable HIDROBIT ® tool (1) is composed of a cylindrical elongated body that has an internal channel (5) for fluid passage, a nozzle (3) located on the side, through which the injection of grout is performed. of cement. It also has two front holes (4) for drilling fluid outlet, and two side grooves (8) for leaving excess volume of reflux material from drilling and injection.
• the drilling shoe (2) is an annular shaped body and surrounds the recoverable HIDROBIT ® tool (1), both of which are integrally coupled.
• the drilling shoe (2) has a rotating body spaced by a channel (7) that allows fluid to escape from the special nozzle.
• a fixed part that is threaded (can be welded) to the Schedule or similar steel pipe that will serve as a frame for the casting.
• a specially developed nozzle designed and manufactured in special steel to withstand low to high pressures (5 kgf / cm 2 to 500 kgf / cm 2 ) is also designed, which is coupled to the side hole (3) of HIDROBIT ® (recoverable tool) where the cement grout is injected radially or inclined.
• the object of the present invention allows the rotopercussive drilling in the tunnel mass, in soil or rock, from the rotation and percussion of the HIDROBIT® coupled to the Drilling Shoe, performed simultaneously to the injection of cement grout with the frame through the concomitant introduction of the Schedule or similar steel pipe, which is previously threaded (can be welded) to the Drill Shoe that remain in the hole after grout injection.
• HIDROBIT ® is recoverable, so it is withdrawn from the bore after simultaneous drilling, arming and injection when performing Self-Coating and Self-Injecting Tubular Filings in a single operation.
• the frame will be automatically completed by inserting Schedule or similar tube as well as the injection, since they are executed simultaneously during the drilling stage, that is, the drilling will be completed, completing all the drilling.
• work in a single operation by removing the recoverable HIDROBIT ® tool (1) by decoupling it from the drill shoe (2) that is welded or threaded to the steel tube from the reversal of the rotational motion of the drill.
• Execution Time A gain of at least 50% of time is obtained compared to current methodologies (national or international), mainly by reducing the executive process to a single operation.
• the Effective Diameter of Self-Coating and Self-Injecting Tubular Filings performed through this new Process and Device is determined by the characteristics of the soil mass and / or rock mass to be treated. From these geological-geotechnical characteristics, the parameters for grout injection, such as pressure, volume, speed among others, which will result in the Effective Diameter obtained in the execution of the Filings.
• HIDROBIT ® eliminates the change of tooling used in the injection of cement grout, as it is performed simultaneously with drilling and reinforcement.
• HIDROBIT ® is designed to work in conjunction with hydraulic and pneumatic drilling rigs, with top hammers or hammers. Down The Hole Hammer (DTH) couplings coupled to hydraulic rotors or tires.
• HIDROBIT is also designed to work on medium to high torque specific Hydraulic Drills, thus extending the application range of HIDROBIT ® with larger diameters if required by using steel tubes with nominal diameter over 2 1 ⁇ 2 inches for tunnel treatment.
• the system can also be used in Drilling Jumps, but due to the torque limitation of this type of equipment, the drilling system should also be limited to smaller diameters and depths than those applicable to Medium to High Torque Hydraulic Drills. tunnel treatment.

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• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Geology (AREA)
• Mining & Mineral Resources (AREA)
• Physics & Mathematics (AREA)
• Environmental & Geological Engineering (AREA)
• Fluid Mechanics (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Mechanical Engineering (AREA)
• Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

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Citations (9)

• 2015
  • 2015-05-15 BR BR112016023275-5A patent/BR112016023275B1/pt active IP Right Grant
  • 2015-05-15 WO PCT/BR2015/000072 patent/WO2016183645A1/pt active Application Filing

Patent Citations (9)

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