A pneumatic trigger device and method for shield tunnel geological evaluation
A technology of shield tunneling and triggering devices, applied in tunnels, measuring devices, seismology, etc., can solve problems such as disasters and risks, difficulty in ensuring shock force, and effective arrangement of auxiliary equipment, so as to avoid potential safety hazards and space problems , Eliminate the problem of inaccurate coordinate positioning and reduce the effect of interference
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Embodiment 1
[0036] In a typical implementation of the present disclosure, such as figure 1 As shown, a pneumatic trigger device for geological evaluation of shield tunnels is proposed.
[0037] It includes multiple hammering mechanisms arranged in the circumferential direction at the tail of the shield. Each hammering mechanism is connected to the air source through the air supply mechanism. The hammering mechanism includes an air hammer, a power chamber for the air hammer and a return spring. The air hammer Slidingly installed on the opening of the shield tail shell, the power air chamber is connected to the air supply mechanism, and cooperates with the return spring to change the movement of the driving air hammer to change the relative position of the air hammer and the shield tail;
[0038] As for the specific structure of the hammering mechanism, it is mainly composed of an air storage chamber 4, a power air chamber 5, an impact air hammer 6, a shield shell fixing plate 9, a sealing ...
Embodiment 2
[0056] In another typical implementation of the present disclosure, such as figure 1 As shown, a shield tunnel geological evaluation detection method is given.
[0057] Include the following steps:
[0058] A single group of multiple hammering mechanisms distributed along the circumferential direction is arranged at the hinge position of the shield tail, and the hammering mechanisms are connected to the air source of the shield machine through the air supply mechanism;
[0059] After the tunneling of the first ring of the shield machine is completed, the gas supply mechanism obtains the pressure of the gas source and outputs the output to excite the hammering mechanism, and the air hammer passes through the shield tail shell to instantaneously strike the surrounding rock to generate seismic waves, and collect seismic wave reflection signals;
[0060] Repeat the segment assembly and the next excavation, and after the next excavation is completed, repeatedly excite the hammerin...
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