EP 4051872 B1 20230823 - PRE-BOLTING
Title (en)
PRE-BOLTING
Title (de)
VORVERANKERUNG
Title (fr)
PRÉ-BOULONNAGE
Publication
Application
Priority
- SE 1951078 A 20190924
- SE 2020050901 W 20200924
Abstract (en)
[origin: WO2021061043A1] Reinforcement of a volume of rock by pre-bolting, comprising: providing a top hammer drilling machine (1, 6) for automatic feed of and drilling with a plurality of drilling modules (2, 3), initially loading (12) the top hammer drilling machine (1, 6) with at least one of said plurality of drilling modules (2, 3), which is module is provided with a drilling crown (5), automatically feeding (13) sequentially and drilling (13) said drilling crown (5) and said plurality of drilling modules (2, 3) into a resulting drill hole in the rock volume by means of the top hammer drilling machine (1, 6), and fixating the drilling crown (5) and said plurality of drilling modules (2, 3) in the drilling hole by injecting a fixation substance in the drilling hole, and wherein the diameters of the drilling modules (2, 3) and the drilling crown has a suitable relation.
IPC 8 full level
E21D 20/00 (2006.01)
CPC (source: EP SE)
E21B 1/02 (2013.01 - SE); E21B 17/0426 (2013.01 - SE); E21B 17/20 (2013.01 - SE); E21D 20/003 (2013.01 - EP); E21D 20/02 (2013.01 - SE); E21D 21/0046 (2013.01 - SE); E21D 21/0053 (2016.01 - SE)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2021061043 A1 20210401; EP 4051872 A1 20220907; EP 4051872 B1 20230823; EP 4051872 C0 20230823; ES 2964293 T3 20240405; HR P20231214 T1 20240119; PL 4051872 T3 20240219; SE 1951078 A1 20210325; SE 543656 C2 20210518
DOCDB simple family (application)
SE 2020050901 W 20200924; EP 20821437 A 20200924; ES 20821437 T 20200924; HR P20231214 T 20200924; PL 20821437 T 20200924; SE 1951078 A 20190924