Sudden-change early-warning device for weak surrounding rock excavating through tunnel machine
A technology of weak surrounding rock and early warning device, applied in tunnels, mining equipment, mining equipment and other directions, can solve the problem of not being able to give early warning in time, and achieve the effect of simple method and accurate early warning information.
Inactive Publication Date: 2017-03-22
CHINA RAILWAY 19TH BUREAU GRP 1ST ENG
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is to provide an early warning device for sudden changes in weak surrounding rocks in mechanical excavation of tunnels, which solves the problem of inability to give early warnings in time due to sudden changes in weak surrounding rocks due to tunnel mechanical excavation
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[0012] refer to figure 1 , firstly, install two fixing bolts before and after the vault 7 of the surrounding rock excavated by tunnel machinery, the two fixing bolts should be on the same straight line, and install a fixing bolt at the two arch waists 8 after the initial support. Bolts, respectively install the laser reflection sensing board 1 on the fixing bolts at the two arch waists, install the laser reflection sensing board 2 on the fixing bolts at the front of the vault, and install the laser reflection sensing board 10-20m away from the vault top laser reflection sensing board The laser transceiver sensor 3 is installed on the second fixing bolt at the vault, and the balance and stability are guaranteed during installation. The three laser emitting heads on the laser transceiver sensor are respectively aligned with the center of the laser reflection sensor plate at the vault and the waist. , the data line 4 on the laser transceiver sensor is connected to the lighting po...
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The invention relates to a device used for conducting sudden-change early-warning on weak surrounding rock in the tunnel machine excavating construction process, in particular to a sudden-change early-warning device for weak surrounding rock excavating through a tunnel machine. The sudden-change early-warning device is designed mainly for solving the problem that currently, the monitoring and early-warning time for tunnel weak surrounding rock deformation and support structures is long. Two fixing bolts are mounted on a vault, two haunches are each provided with a fixing bolt, lower laser reflecting sensing plates are mounted on the fixing bolts at the haunches, and an upper laser reflecting sensing plate is mounted on the front fixing bolt at the vault. A laser receiving and sending sensor is mounted at the vault, three laser emitting heads of the laser receiving and sending sensor are aligned with the centers of the laser reflecting sensing plates at the vault and the haunches correspondingly, a data line on the laser receiving and sending sensor is connected with a lighting power line in a tunnel, and a sensor early-warning loudspeaker is connected to the joint of the data line and the lighting power line. The sudden-change early-warning device has the advantage that safety early-warning is provided for a site in time.
Description
[0001] Technical field: [0002] The invention relates to a device for early warning of sudden changes in weak surrounding rocks during tunnel mechanical excavation construction. [0003] Background technique: [0004] In view of the tunnel mechanical excavation construction process, according to the many changes in geological conditions, there will be great uncertainties. Usually, when monitoring and early warning of the deformation of the weak surrounding rock of the tunnel and the support structure during construction, it is done manually The method uses measuring equipment such as levels and total stations to analyze the data after collection. This process is very long. However, the collapse of the weak surrounding rock of the tunnel occurs in a relatively short period of time, and the sudden change of the surrounding rock of the tunnel will It poses a serious threat to the safety of construction workers in the cave. [0005] Invention content: [0006] The technical prob...
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Login to View More IPC IPC(8): E21F17/18E21D9/00
CPCE21F17/18E21D9/003
Inventor 张若飞郝万福王江水夏东升李金永
Owner CHINA RAILWAY 19TH BUREAU GRP 1ST ENG