Measuring device and method for destructive testing in tunnel lining quality detection

Abstract

The invention discloses a measuring device and method for destructive testing in tunnel lining quality detection. The measuring device is composed of a mandril, a lower bottom rod, an outer casing pipe and a handle. Scales are marked at the outer sides of the mandril and the lower bottom rod. The mandril, the lower bottom rod, and the outer casing pipe form a main body part of the measuring device. A tapered sensor is arranged at the top of the mandril and is in internal threaded connection with the mandril. A strong-force spring pin is arranged at the top of the outer casing pipe. The mandriland the lower bottom rod are connected by a thrustor that is arranged inside the lower bottom rod and at the bottom of the handle; the thrustor is formed by a connecting device and an electric device; the upper end and the lower end of the handle are connected with the lower bottom rod and a pushing box respectively by internal threads; and a leveling pipe is arranged at the upper part of the handle. The measuring device having a simple structure is easy to operate. With the measuring device and method, measurement of the drilling lining hole depth and detection lining thickness during destructive testing of the tunnel lining is realized.

Description

technical field [0001] The invention relates to a measuring device for crack detection in the lining quality detection of expressway tunnels, railway tunnels, subways or other underground pipe gallery structures, in particular to a measuring device and method for the thickness of hollows or lining thickness in tunnel quality detection . Background technique [0002] With our investment in infrastructure construction, there are more and more tunnel projects. During the construction of tunnel projects, the problems of complex geological environment, difficult construction conditions, and aging equipment and materials are also more prominent, especially the tunnels caused by this. There are many problems with the lining quality, and the more serious void problems will cause incalculable losses to the tunnel operation after construction. Therefore, the safety assessment of tunnel void and tunnel lining thickness is particularly important in tunnel quality inspection. [0003] ...

AI Technical Summary

Problems solved by technology

[0008] In order to realize the accurate measurement of the depth of the cavity and the thickness of the lining in the inspection and verification process of the tunnel lining quality safety inspection, complete the measurement task more accurately, faster and safer, and solve the inaccurate data, cumbersome operation and waste of manpower in the measurement In order to solve such problems, a measuring device and method for crack detection in tunnel lining quality testing is designed. This device can well solve some problems existing in traditional measuring devices.

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