Limestone Stadium Bad Segeberg

23795, Bad Segeberg
Stadt Bad Segeberg
Geomontan GmbH, Grossschirma / OT Rothenfurth
Stump Spezialtiefbau GmbH, Niederlassung Chemnitz
Dahil olan diğer şirketler
Geotechnik Projekt, Dr. Ing. Penzel / Technical University Bergakademie Freiberg
Защищаемый объект
Kарьер / Шахта, Туристическая инфраструктура, Искусство
Защита от коррозии
Площадь укрепления
2000 m²
Высота склона
30 m
60 ° - 90 °
Другие конструкции
Горнодобывающая промышленность / Туннели

Since 2007, in the Limestone Stadium of Bad Segberg, rock faces were cleared to protect performers and spectators from rockfall.  Unfortunately, this caused considerable damage to the stage and scenery.  There was also a persistent risk that «bulges» over 100 m²  and several meters thick would come loose and crash down without warning.


The Kalkberg (limestone mountain) is mainly composed of anhydrite. Under the influence of humidity, dew, and rainfall, this turns to gypsum and increases volume. This process, known as gypsification, creates shell-like «bulges» up to several meters thick which protrude from faults running parallel to the slope.


Extensive tests and calculations were carried out before the protective work began. Trial anchors were installed to select the most suitable grouting mortar.

The SPIDER® rock protection system was dimensioned with SPIDER ONLINE-TOOL software by the Technical University Freiberg.

Around the stage, the appearance of the rock face could not be altered.  No nets could be hung in this area.  Rock nails with countersunk heads were used instead.

Installation of the SPIDER® rock protection system took place in 2009 and 2010 on several rock faces (e.g., near the cave exit and above the spectators' area).  In some cases, this occurred while events were in progress, in the theater. The rock face heights are between 20 and 30 meters which posed an additional challenge to the contractor, due to limited accessibility. A mobile crane with an attached drilling platform was used for some of the drilling work.

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Isacco Toffoletto
Isacco Toffoletto
Ticino Country Manager
Инженерная защита, Горнодобывающая промышленность / Туннели
Geobrugg AG Ticino
Stabile Cometal, via Pizzante 7
6595 Riazzino / Швейцария
Roger Moor
Roger Moor
Country Manager Ost- und Zentralschweiz, Liechtenstein
Инженерная защита, берегоукрепление, Горнодобывающая промышленность / Туннели
Геобругг АГ
Аахштрассе 11
8590 Романсхорн / Швейцария
René Müller
René Müller
Country Manager Kantone AG BE BL BS FR GE JU NE SO VD VS
Инженерная защита, Горнодобывающая промышленность / Туннели
Геобругг АГ
Industriestrasse 21
5200 Brugg / Швейцария