Bauer Maschinen’s valued client Krause & Co. Hoch-, Tief- und Anlagenbau GmbH carried out the reduction to the diameter of various pipelines and the plugging of a tunnel at Einsiedel Dam near Chemnitz, Germany. A BAUER BG 23 H PremiumLine was used, which the construction company from the Ore Mountains region had recently acquired.

Bauer Maschinen’s valued client Krause & Co. Hoch-, Tief- und Anlagenbau GmbH carried out the reduction to the diameter of various pipelines and the plugging of a tunnel at Einsiedel Dam near Chemnitz, Germany. A BAUER BG 23 H PremiumLine was used, which the construction company from the Ore Mountains region had recently acquired.

At the first of seven stations, 18 bored piles were produced by means of Kelly drilling for an excavation and an H-beam was introduced into each pile for the construction of a Berlin type pit lining. A BAUER BG 23 H PremiumLine was used, which the construction company from the Ore Mountains region had recently acquired.

“Originally, we wanted to replace our tried and tested BG 20 H, which now has a good 10,000 operating hours under its belt, with a new BG of the same type”, says Krause & Co.’s specialist foundation engineer Sven Nietsche. However, there were several reasons to opt for an upgrade: On the one hand, with the BG 23 H, the existing BV 1500 casing oscillator – correspondingly reduced in diameter – could continue to be operated. “This was one of the decisive reasons for Krause & Co. to invest in the new unit”, says Peter Sturm from Product Management at BAUER Maschinen GmbH. Also the transport weight of approx. 64 t – without KDK – was able to be delivered by the usual freight forwarder.

 

When purchasing the BG 23 H, the Double Rotary Head System-FOW drilling method was also specified alongside of the Kelly drilling method. This makes it possible to even handle urban projects, in which a bored pile wall must be created as close as possible to existing structures. A concrete pouring line on the device completes this drilling process from a technical point of view.

Another plus: The cleaning of drilling equipment and rig can be perfectly accomplished thanks to the built-in rear water tank including high-pressure cleaner, even if there is no water supply on site. The new BG 23 H can also come equipped with a compressor and generator on request, both of which are installed in the superstructure. With its ballast stacked up and its very compact dimensions, the device can be used optimally even in extremely cramped construction site conditions.

The new device also scores highly in terms of noise emissions: “Everyone, from the rig operator to the head of the special civil engineering division at Krause & Co., has repeatedly highlighted the low noise level of the machine during drilling”, says Peter Sturm. “Likewise, the very good rotary drive performance, the high stability of the kinematics and the extraordinary stability of the machine overall convinced our customer.”

The initial operation of the BG 23 H was rounded off by a comprehensive briefing of the rig operator, which was conducted by a BAUER Maschinen GmbH employee. Thanks to his previous work as an operator in our sister company, BAUER Spezialtiefbau GmbH, the instructor was not only able to perfectly explain the technical refinements of the drilling rig, but also gave practical tips and instructions for the upcoming drilling task and, whenever necessary, even got actively involved. “The customer is very satisfied with his new BG 23 H”, says Peter Sturm with pleasure, “we wish him many successful projects and, of course, we’ll continue to provide advice and support.” The “old” BG 20 H is, however, far from being decommissioned, Krause & Co. will hang on to the rig in order to cover future peak times.