After completing several raises at copper mines located in the Yunnan and Sichuan provinces, the Terratec TR3000-R18 raise boring machine (RBM) was put to work on the 1,200-megawatt (MW) Huanggou Pumped Storage hydroelectric power station project, which is currently under construction about 90 kilometers (km) north of Mudanjiang, in the Heilongjiang Province, in the far north of China.
Caption: One of Terratec's TR3000 raise boring machines (RBM) has successfully achieved a series of impressive inclined raises with a high level of accuracy at the Huanggou Pumped Storage Power Station Project in the Heilongjiang Province of China.
7 mine near Brookwood, Alabama, using an Atlas Copco Robbins 123R C raise boring machine and multimodular wing system (MMWS) reamer.
The 1,440-ft-long, 26-ft-diameter raise was actually the third project for the company's Atlas Copco Robbins 123RH C raise boring machine.
The Atlas Copco Robbins 123RH C raise boring machine is technically rated for making 10- to 20-ft-diameter holes.
Peru hosts a number of deep mining operations, so it was no coincidence that equipment specialist Tumi Raise Boring--headquartered in Lima, Peru--seized the opportunity of the recent Perumin trade show to introduce its new SBM 400 SR slot raise boring machine.
Typically, standard raise boring machines are used for ventilation purposes," said Marc Blattner, Tumi's general manager (pictured above).
Televised pictures of the 31-ton Strata 950 raise boring machine brought to the site gave viewers a striking visual lesson in the size, power and weight of machines built to bore through the earth.
As our 2011 coverage of the sector explained, the limitations on raise boring machine power and capacity are mostly external factors such as drill string integrity, local ground conditions and the frequent requirement that these machines must be able to operate in confined spaces (See Speed and Safety: Raise Boring Provides the Solution, p.
As an example, Australia-based raise boring and tunneling machine builder Terratec reported in early February that it had successfully completed the factory acceptance testing of its first raise boring machine, a model TR3000, sold for the Mexican market.
Traditional raise boring machines
typically require a concrete platform and tie-down bolts to keep the machine stable during operation.