Top Menu

Concrete Drophole Products

Jet likes to be ahead of the pack when it comes to total solutions so we have created a complete family of products, which all work together to improve the efficiency of transporting ballast and concrete into the mine.  Six products in all, including hoppers, concrete kettles and a QDS Kibble attachment, all designed from the ground up for maximum performance on site.

We are serious about quality and all our concrete kettles have been designed for maximum wear life. When they do eventually wear out, our modular design allows replacement of only the components that have worn, not the complete assembly. Maintainability has been considered at the design stage, resulting in features which ensure our kettles are easy to disassemble and overhaul. All of these features combine to provide the lowest possible whole of life ownership cost.

We have also developed two different designs of concrete hopper (Compact style and Calibrated style) to suit individual mine site requirements and budgets.

And we’ve thought of every stage of the process with our innovative ballast hopper which allows a front end loader to efficiently load ballast into the borehole.

Concrete Kettle

Concrete kettles are a critical part of the process of dropping concrete down a borehole.  By slowing the flow of the concrete out of the borehole, they cause the concrete to reconstitute, while also preventing the concrete from splashing when it lands in the LHD bucket or QDS Concrete Kibble. We have certified designs for boreholes ranging from 250NB to 350NB in diameter, and 175m to 350m in depth.  Over the years we have refined our designs based on feedback from customers, and on observation of our kettles performance in service.  As a result, we are confident that our kettles are the best on the market.  Some of the benefits of our designs include:
  • Our three piece design saves money by allowing replacement of individual components as they wear out
  • Areas subject to high wear are lined with wear resistant material to prolong life and reduce operating costs
  • Our design allows for ease of disassembly during repairs, to reducing overhaul costs
  • Our kettles and mounting plates feature strategically positioned Rud lugs, making installation quicker and easier, and preventing injuries to personnel
  • Our designs have been proven in service
  • Concrete Kettle
  • P5300210

QDS Concrete Kibble

  • Tare Mass: 2300kg
  • WLL: 7700kg (10 tonne LHD only)
  • Capacity: 3.2 cubic metres
  • Dimensions:
    • Length 1800mm
    • Width 1800mm
    • Height 1450mm
  • Volume maximised to capacity of 10 tonne LHD for maximum efficiency
  • Shape promotes flow of concrete and prevents material hanging up in corners
  • Hinged gate valve provides improved reliability compared to sliding gate
  • Fork pockets and Rud lugs for ease of handling
  • Hydraulic activation of feed chute door(s)
  • Open top or closed top with hinged hatch
  • Traditional square shaped kibble with multiple feed chutes in various locations
  • 2.1 cubic metre version to suit 7 tonne LHD's

Concrete Hopper – Compact

Our compact concrete hopper offers a lower cost option for the surface end of concrete dropholes.  Some of the features and benefits of our design include:
  • Lockable hinged lid, allowing the drophole to be sealed when not in use
  • Handles on the lid to prevent injuries when opening and closing
  • Mesh screen inside hopper to minimise risk of borehole blockage
We have existing designs for 250NB, 300NB and 350NB boreholes.
  • P3300044
  • IMG_1348

Concrete Hopper – Calibrated

Our calibrated concrete hopper provides an accurate method of dropping the correct amount of concrete down the borehole to match the bucket or QDS Kibble below. The hopper can either be permanently mounted over the borehole, or mounted on rails to allow the same borehole to be used for dropping concrete and ballast. As an option we can also supply a pneumatically operated knifegate valve to allow the drophole to be sealed in the event of an emergency underground.
  • IMG_1895
  • IMG_1666

Ballast Hopper

Our ballast hopper provides and efficient means of loading ballast into a drophole using a front end loader.  The design of the hopper allows the loader operator to monitor the rate of transfer of ballast from the bucket into the hopper, and from the hopper into the borehole. The moderate slope in the bottom of the hopper controls the speed of the ballast as it flows into the borehole, thereby minimising the risk of blocking the borehole. The hopper can either be permanently mounted over the borehole, or mounted on rails to allow the same borehole to be used for dropping ballast and concrete.
  • IMG_1663
  • IMG_1655
  • IMG_1654
  • IMG_1647

Butcher’s Doors

The benefits of  our Butcher's Doors are two fold:
  • They improve the safety of dropping ballast down a borehole by preventing dust billowing into the intake airways;
  • And they improve the efficiency of underground roadworks, by allowing LHD's to pass through without the operator having to stop and open ventilation doors
Our hanging brackets come in a range of lengths to suit the width of the roadways at different collieries. The doors can either be made from FRAS polyurethane or recycled FRAS conveyor belt, depending on customer preference.

Copyright © 2014 Jet Engineering. All Rights Reserved