Real-time deformation contact monitoring device and method of underground rainfall-sewage pipeline

Abstract

The invention discloses a real-time deformation contact monitoring device of an underground rainfall-sewage pipeline and a real-time deformation contact monitoring method of the underground rainfall-sewage pipeline. The monitoring device comprises an underground part and an aboveground part, wherein the underground part is a wide-range high-precision displacement sensing system, and the aboveground part is a remote real-time data acquisition system and conventional measurement points; an anchor head is welded with a stainless steel bar which is sleeved with a corrugated pipe, the anchor head and the outer surface of the rainfall-sewage pipeline wall are bonded with a cement paste, the stainless steel bar is hinged with a dragging and pulling steel wire and integrally connected with a wire pulling displacement sensor. Two wire pulling displacement sensors of underground measuring points are connected with a data collection box through a cable. When the tunnel is excavated, A and B points of the elicitation ground and C and D points of the upper surface of the rainfall-sewage pipeline wall are subsided, the new positions of A, B, C and D points in time t respectively refer to A', B', C' and D'. According to data measured by the regular high-range level gauge at A and B points and data in real time transmitted by the wire pulling displacement sensor, the deformation conditions of C and D points of the rainfall-sewage pipeline can be in real time monitored.

Description

technical field [0001] The invention relates to a contact-type real-time monitoring device and method for underground rain and sewage pipeline deformation, belonging to the technical field of underground engineering construction monitoring. Background technique [0002] Since most of the underground rain and sewage pipes are buried deep underground in urban roads, the construction of underground subway stations or section tunnels will inevitably have an impact on the underground rain and sewage pipes in the overlying stratum, and the underground rain and sewage pipes will be deformed, such as settlement, differential settlement, and inclination. , bending, etc., will be damaged in severe cases, resulting in major engineering accidents. Therefore, in subway projects, the underground rain and sewage pipelines crossed by underground projects are monitored as a higher-level risk source. [0003] At present, there are mainly three monitoring methods for underground rainwater pip...

AI Technical Summary

Problems solved by technology

Due to the difference in stiffness between the underground rain and sewage pipeline and the stratum, the deformation of the foundation of the underground rain and sewage pipeline is not consistent with that of the underground rain and sewage pipeline. This method has large errors, and the engineering cost is high, and remote real-time monitoring cannot be realized.

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