Tag Archives: Peter Bray

Epiroc looks to set underground rock reinforcement standard with Boltec M10, E10

Epiroc is showcasing the latest additions to its rock reinforcement line at MINExpo 2021 in Las Vegas, with the new Boltec M10 and Boltec E10.

The Boltect M10 (pictured) and the larger Boltec E10 are fully mechanised rock bolting rigs for medium- and large-sized tunnels, designed to increase productivity and bolt installation quality thanks to intelligent options and compatibility with different bolt types, according to the company.

Peter Bray, Global Product Manager, Rock Reinforcement Equipment with Epiroc’s Underground division, said: “As mining operations move ever deeper underground, the difficulty in bolting and securing increasingly fragmented rock is rising. The Boltec M10 and Boltec E10 introduce previously unavailable autonomous functionality: this is the benchmark in underground rock reinforcement.”

With self-drilling anchor bolts (SDA) in combination with pumpable resin, the Boltec M10 and Boltec E10 can perform single bolt and multi-bolt installation automatically, according to Epiroc. These new functions work hand-in-hand with teleremote bolting and offer bolting potential during shift changes or other situations where off-board control during bolting is needed, the company says.

With in-built flexibility, the Boltec M10 and E10 have the ability to handle several different types of bolts, mesh and installation methods as well as radial, face bolting and extension drilling capability, Epiroc says. The boom bolter concept ensures the operator stays at a safe distance from the working area of the machine during the bolting process.

The new Boltec rigs come with an optional battery-electric driveline, which brings additional advancements for operator health, maintenance, ventilation and cooling.

The Boltec M10 and Boltec E10 also come with a completely redesigned operator station. The optional ROPS- and FOPS-certified cabin sets new standards for operator safety and comfort thanks to significantly reduced noise levels down to only (65 dB(A)), HEPA air filtration and better visibility, according to Epiroc. The air-conditioning system also features automatic temperature adjustment, further boosting operator comfort.

Epiroc pumps up rock reinforcement offering

Epiroc, together with LKAB, has developed a new solution for installing long-term rock bolts in poor rock conditions.

The pumpable resin system for underground rock bolting, designed for the mechanised bolting machines Boltec M and Boltec E models, is a result of the mining OEM and mining company’s collaboration within the EU-led Sustainable Intelligent Mining Systems (SIMS) project.

Epiroc says: “One of the more difficult rock reinforcement tasks in underground mining and tunnelling operations is how to install long-term rock bolts in poor rock conditions. Rock bolting, as a result, is often the bottleneck within the drill and blast cycle, leading to difficulties to predict work task scheduling.”

Blocky or friable ground often leaves drilled bolt holes blocked or partially blocked. This slows down, or in the worst case, prevents the introduction of bonding agents such as cement grout or resin cartridges into the bolt hole.

“The Epiroc and LKAB solution will allow a faster, more reliable and cost effective bolting alternative for long term rock reinforcement in difficult ground conditions,” Epiroc said.

Peter Bray, Global Product Manager, Epiroc, said: “An important factor to achieve a workable rock reinforcement solution is to have a system where the bolt design, bonding agent and bolting rig all work together to provide a robust and reliable bolt installation. To this end, Epiroc has worked hand in hand with a leading bolt and chemical supplier to create a bolting system that addressed the issues faced with long-term bolting in poor ground conditions.”

The result of this work is an integrated pumpable two-component resin system that can be used with a Self-Drilling Anchor style bolt in tougher ground conditions or, alternately, with a two-step hollow bolt in more moderate ground conditions.

“Having the ability to choose a long-term rock bolt that suits the ground conditions means that customers are able to achieve an optimal rock reinforcement regime in terms of function and budget,” concluded Bray.