BD600
YZH
Product Description
In the restricted headings of underground mines, oversize that lodges on a grizzly or in an ore pass can stop development or production until it is blasted or barred down, which is slow and risky. YZH underground rock breaker boom systems are installed opposite dump points or beside ore pass mouths so the boom can rake and break oversize right where it blocks the flow, keeping ore moving and the fleet productive.
Because the breaker is fixed to a pedestal and controlled remotely, the system works reliably under low backs and tight clearances where mobile machines cannot safely operate.
Grizzly and ore pass hang‑ups
Oversized rocks and boulders can sit on flat sections of grizzlies or wedge in ore pass inlets, creating bottlenecks that halt mucking and hoisting.
The boom system’s coverage allows operators to rake oversize along the grizzly and apply impact where the problem area is, breaking and dislodging material so smaller rock can pass through to the ore pass.
Unsafe manual entry to drawpoints and grizzlies
Historically, miners had to work close to choked drawpoints and grizzly bars with bars or small tools, exposing them to sudden release of rock and poor ground.
With a pedestal-mounted breaker boom, operators stand in safe positions, using remote controls to handle oversize from a distance, greatly reducing exposure to rockfalls and unstable piles.
Production losses from slow secondary blasting
Firing secondary blasts underground requires re‑entry procedures, fume clearance and scheduling delays.
Mechanical secondary breaking with the boom system reduces or eliminates many secondary blasts at hang‑up points, shortening interruptions and improving overall ore throughput.
YZH uses the same four building blocks found in its mining rockbreaker systems, adapted to underground geometry:
Pedestal boom
The boom is mounted on a pedestal base anchored to rock or concrete beside the grizzly or ore pass, with geometry selected to cover the full problem area while fitting under low back heights.
Side‑mounted hammer options and carefully chosen pedestal elevation allow the boom to work effectively even where headroom is limited.
Hydraulic breaker
Underground‑suitable breakers are chosen according to rock hardness and the typical size of oversize encountered at the grizzly or pass.
Breakers and their tools are configured to deliver impact into the rock mass with enough clearance to swing and turn without striking surrounding steelwork.
Hydraulic power unit
Electric power units supply oil flow and pressure suited to continuous or shift-based underground duties, with filtration and cooling chosen for dusty headings.
Power units can be positioned off the main travelway to reduce noise and simplify maintenance access.
Control system
Controls range from nearby protected stations to remote panels or radio systems in safe areas, giving operators precise boom and hammer control from a distance.
Integration with mine control and safety systems (interlocks, lockouts) supports safe operation alongside crushers, feeders and conveyor drives.
YZH rock breaker boom systems applied to underground mining are typically used at:
Grizzly screens over ore passes at drawpoints or shaft stations, where oversized ore must be broken before gravity flow.
Underground jaw or gyratory crushers on main levels, where oversize and hang‑ups in the crusher throat must be cleared frequently.
Development ore passes in narrow headings where mobile equipment access is limited but hang‑ups still occur.
In each case, the boom coverage is designed using installation guidelines so that all likely hang‑up areas can be raked and broken without repositioning the pedestal.
Although this product is described broadly as a “rock breaker boom system applied to underground mining,” each project is engineered using mine drawings and site constraints:
YZH engineers analyze grizzly design, ore pass geometry, drift dimensions and ore characteristics to choose a boom model, breaker size and pedestal location.
Coverage drawings are used to verify that the selected boom can reach and work above oversize while maintaining adequate clearance for turning and breaking.
The final package—boom, breaker, power unit and controls—is delivered ready for installation and commissioning under underground conditions.
If grizzly hang‑ups, ore pass blockages or unsafe secondary breaking are still limiting your underground mine, a YZH rock breaker boom system can turn those points into engineered, remote‑operated breaking stations.
Share your underground layout, grizzly and ore pass locations, heading dimensions and ore characteristics, and YZH will configure a rock breaker boom system optimized for your underground mining operation.
