Tunnel vault prevents empty alarm device

• Main Authors: CHEN GANG, HAO HUI, ZHANG YANG, WEN FUYUAN, LAN TINGBO
• Format: Patent
• Language: Chinese; English
• Published: 25.08.2017
• Subjects: ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVEREDIN A SINGLE OTHER SUBCLASS; EARTH DRILLING; FIXED CONSTRUCTIONS; MEASURING; MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR; MINING; PHYSICS; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; TARIFF METERING APPARATUS; TESTING

The utility model discloses a tunnel vault prevents empty alarm device for secondary lining, include: two insulation boards, its parallel interval sets up, two copper foil sticky tapes, it sets up at two insulation boards on the surface relatively respectively, the position of two copper foil sticky tapes is corresponding, just two surfaces that the copper foil sticky tape is relative can be electrically conducted, two insulated wire, its one end respectively with two blocks of copper foil sticky tape electricity are connected, and the other end all stretches out from the clearance of two insulation boards, alarm mechanism, its other end electricity with two insulated wire is connected. The utility model discloses simple manufacture, low cost, convenient for material collection have avoided complicated, loaded down with trivial details construction operation to can judge directly perceivedly whether the vault exists the cavity. 本实用新型公开了种隧道拱顶预防空洞报警装置，用于二次衬砌，包括：两块绝缘板，其平行间隔设置；两块铜箔胶带，其分别设置在两块绝缘板相对的表面上，所述两块铜箔胶带的位置