发明名称 |
Method, system, use of the system and reinforcement member for rock reinforcement |
摘要 |
The present invention concerns a method, a system, the use of the system and a reinforcement member for the direct detection of the presence of a cavity in a drill-hole intended for the reception of a reinforcement member. The method comprises the injection of a drill-hole with hardening grout 6, the introduction of a reinforcement member 7, 40 to introduce a pressurized medium 37 and the measurement of the change in pressure or the detection of a flow of medium, whereby the fall in pressure or the presence of a flow of medium indicates the presence of a cavity. The system comprises a container 26 comprising a pressurised medium 37, a reinforcement member 7, 40 comprising a channel 15, 41 through which the pressurised medium in the container is added to the drill-hole at the presence of a cavity, and a pressure gauge 27 or a flow meter 50, where the pressure gauge measures a change in pressure or the flow meter detects a flow of medium, whereby a fall in pressure or a flow of medium indicates the presence of a cavity. The invention is used during the construction of tunnels and mines in order to ensure the quality of rock reinforcement that has been carried out. |
申请公布号 |
US8814476(B2) |
申请公布日期 |
2014.08.26 |
申请号 |
US201013318776 |
申请日期 |
2010.05.05 |
申请人 |
Malmafälten AB |
发明人 |
Åberg Sture;Gustafsson Leif |
分类号 |
E21D20/02 |
主分类号 |
E21D20/02 |
代理机构 |
Morrison & Foerster LLP |
代理人 |
Morrison & Foerster LLP |
主权项 |
1. A method for the direct detection of the presence of a cavity in a drill-hole intended for the reception of a reinforcement member, which method comprises:
the injection of hardening grout into the drill-hole, the introduction of a reinforcement member into the drill-hole, the introduction of a pressurised medium into the drill-hole, and the measurement of a change in pressure in the medium or the detection of a flow of medium,whereby a fall in pressure or the presence of a flow of medium indicates the presence of a cavity. |
地址 |
Luleå SE |