Overview: This document outlines the technical specifications and applications for borehole seals and related equipment used in coal and rock formations. It covers borehole seals, injection pumps, packers, and accessories for rock consolidation and sealing processes.
Borehole Seals: Two types of borehole seals, BVS 36 and BVS 40, are described for hole diameters of 38 to 55 mm. These seals are used during and after media injection for rock consolidation, featuring steel or plastic inner pipes for effective sealing and cost efficiency.
Technical Features: The seals have a gripping pressure of 40 to 50 bar and a cracking pressure over 180 bar in a 46 mm diameter hole. They are compatible with adhesives, cement, or other media.
Injection Pumps: The document details two-component injection pumps, GX 45 PU-03 and S 35-PU, which are compact and easy to handle, primarily used for polyurethane delivery with varying flow capacities and working pressures.
Single and Double Packers: Single packers are available in lengths of 500, 1000, and 1500 mm for injections in rock formations. Double packers can measure gaseous media and be used as single packers, ensuring excellent sealing by adapting to borehole irregularities.
Security Advice: It is essential to ensure that injection pressure does not exceed inflation pressure when using packers, and back pressure should not surpass the packer's working pressure.
Accessories: Additional equipment includes the IRMA injection tube for rock bolting and the G20 ZL grouting
pump for cement slurry, featuring stainless steel construction for durability.
Application Examples: Examples of packer applications in various borehole orientations are provided, highlighting the importance of adjusting working pressures and using appropriate pressure media like compressed air or nitrogen.
Specifications:
- Pressure: Minimum 1 bar, Maximum 10 bar
- Maximum working pressure: 216 bar
- Pumping medium: Water
- Maximum flow capacity: Dependent on application
- Weight: Approximately 35 kg
- Dimensions: Approximately 840x480x380 mm
Characteristic Features:
- Easy handling and operation
- Stationary unit
- Compact design
- Clearly arranged
- Pneumatically driven, no electric power required
Accessories:
- Flow control valve for regulating water or oil flow rates, maintaining constant flow regardless of pump and back pressure
Applications:
- Suitable for longwall infusions in mining, where multiple holes are supplied by a single pump
Technical Features of Flow Control Valve:
- Maximum working pressure: 500 bar
- Adjustment range: 1.5 – 20 l/min
- Control accuracy: ± 5% of adjusted target value
- Material: Stainless steel
Grouting Probe Type TZ 32K: - For borehole diameters from 46-50 mm
- Cracking pressure outside: 55 bar
- Cracking pressure inside
pipe with Ø 46 mm: 140 bar
- Length of infiltration probe: Optional
- With plug
Infusion Jet Type TK 39 WSP:
- For borehole diameters from 46-50 mm
- Cracking pressure outside: 250 – 260 bar
- Cracking pressure inside pipe with Ø 50 mm: 510 – 520 bar
- Length of infiltration probe: Optional
- With baffle plate or adjustable brass spring valve
Infusion Jet Type 58/61:
- For borehole diameters from 64-90 mm
- Cracking pressure outside: 70 bar
- Cracking pressure inside pipe: 200 bar
- Length of infiltration probe: Optional
- With brass spring valve only
Short Bore Holes with Hydraulic Hand-held Drill:
- Operating pressure: 300 bar max.
- Return pressure: 60 bar max.
- Speed frequency: 200 – 1000 r.p.m.
- Torque: 4.8 daNm
- Pressure transfer medium: HFA, HFC, hydraulic oils
- Volume required: 10.3 cm3/rev.
- Sound pressure level: 83 dB(A) drilling
- Weight: 9.5 kg
Short Bore Holes with Pneumatic TURMAG Hand-held Drill:
- Maximum operating pressure: 4 bar
- Speed frequency: 1000 + 700 r.p.m.
- Torque: 24 + 40 Nm
- Air consumption: 24 Nm3/h
- Motor capacity: 2.5 kW
- Sound pressure level: 91 dB(A)
- Weight: 7.7 + 8 kg
- Accessories available with or without flushing