Microtunneling
1Pages

Microtunnel Boring Machines ■JflH X Akkerman's Microtunnel Boring Machines (MTBM) install pipe in ground conditions that are generally below the water table. Microtunneling is referred to as non-manned, remote controlled, continuously supported pipejacking. Applications most suitable for this method are gravity flow pipelines requiring prcise line and grade in poor soil conditions. As the only US manufacturer of microtunneling equipment, our Systems are a fusion of high productivity, dependability and accuracy in a wide range of soil conditions without the need for dewatering. The electrically powered, Variable Frequency Drive (VFD) controlled MTBM is operated from the control container. Operators are able to monitor and adjust the cutter head's location, rotation, torque, jetting, pipejacking thrust, steering, slurry flow and various pressures from a three-monitor console. Our MTBMs can be equipped with the appropriate cutter face for soft ground, mixed ground and rock for prcise ground excavation. The active target, housed inside a heavy-duty steel cylinder, is mounted in the back center of the MTBM.The guidance System reports the MTBM's pitch and yaw statistics to a monitor in the control console for operator assessment and anticip驢tes the MTBM's location at the cutter face. The MTBM's articulated steering joint allows for active steering control. Spcifications Product Longest/ Overall Length" Pipe OD Heaviest Section/ Overall Weight" Drive Motor Max. Torque MTBM SL30 130/255" (3.302/6,477 mm) 30- (762 mm) 10,000/13,000 Ibs (4,536/5,896 kg) 75 HP (56 kW) 0-13 rpm (45.400 Ibf-fl) MTBM 130/255" 34" 12,000/16,000 Ibs 75 HP 0-11 rpm SI 34 (3.302/6,477 mm) (864 mm) (5,443/7,257 kg) (56 kW) (52,800 Ibf-fl) MTBM SL36 130/255-(3,302/6.477 mm) 36" (914 mm) 14,000/18,500 Ibs (6.350/8,391 kg) 75 HP (56 kW) 0-8 rpm (74,000 Ibf-fl) MTBM SI 44 120/250" (3,302/6.350 mm) 44- (1.118 mm) 15,000/21,500 Ibs (6.804/9,752 kg) 75 HP (56 kW) 0-11 rpm (53,000 Ibf-fl) MTBM SL46 120/250" (3,302/6,350 mm) 46" (1.168 mm) 16,000/23,500 Ibs (7,257/10.659 kg) 75 HP (56 kW) 0-8 rpm (74,000 Ibf-ft) MTBM SL 525 126/230" (3,302/5,842 mm) 525" (1,334 mm) 20,000/27,500 Ibs (9,072/12.474 kg) 100 HP (75 kW) 0-10 rpm (78,000 Ibf-ft) MTBM SL60 161" (4,089 mm) 60" (1,524 mm) 36.000 Ibs (16,329 kg) 150 HP (112kW) 0-7.7 rpm (153,000 Ibf-fl) MTBM SL72 161" (4,089 mm) 72" (1,829 mm) 36,000 Ibs (16,329 kg) 250 HP (186 kW) 0-7.7 rpm (255,000 Ibf-ft) MTBM SL74 161" (4,089 mm) 74" (1,880 mm) 36,000 Ibs (16,329 kg) 250 HP (186 kW) 0-7.7 rpm (255,000 Ibf-ft) r Product Dimensions wx1 xh Capacity Pressure Weight Control Container 8x20x8.5' (2.4 x 6 X 2.6 m) 480VAC/1.200A na 21.250 Ibs (9,639 kg) Remote Power Pack 8 x 9.75 X 8.6' (2.4 x 3 x 2.6 m) 150 HP (112kW) 8,000 psi (S50 bar) 13,000 Ibs (5,8967 kg) High Pressure Jetting Pump 38x37x 15" (965 x 940 x 381 mm) 75 HP (56 kW) 3,500 psi (240 bar) 1,240 Ibs (562 kg) Cooling Water Tank 6 x 14.5x6.5' (1.8x4.4x2m) 1,685 gai (6,378 L) 250 psi (1,724 kPa) 2,200 Ibs (998 kg) y "Note: Akkerman standard sizes can be customized to suit project needs. "Actual weights may very based on spcifie configuration. 驕 <SL.II-- SSa, *a--loi1 ». i..5,; ---Si fc^'va -jk The Control Container is the control center for ail microtunneling functions. It houses the control console, motor control centers for slurry pumps, MTBM drive motor and the bulkhead panel for electrical and communications connections. With the cutter face removed, the crushing cone's slurry inlet holes, high pressure jetting nozzles and spoil intake ports are clearly visible.This MTBM SL74 has been"skinned"to 102-inches (2,591 mm) to get more versatility out of one machine. Our MTBMs can be equipped with the appropriate cutter face for job requirements. Shown here is the soft ground configuration featuring a combination of carbide drag and bullet bits. The mixed ground cutter face configuration features bullet bits and cutter dises. The MTBM operator maintains control of ail microtunneling functions during opǩration from a three-monitor console in a climate controlled environment.