Automatic grouting device for single-point displacement meter installation and segmental grouting installation method

Abstract

The invention discloses an automatic grouting device and a segmented grouting installation method for installing a single-point displacement meter. The device of the present invention includes an automatic grouting system, a base section for system installation, a hollow section for installing a single point displacement meter, and an anchor section; the automatic grouting system consists of a grouting pump, a grouting console, a grouting Grouting / discharging liquid flow sensor, check valve, grouting pipe and grouting pipe; the anchoring section and the base section are automatically grouted, while the hollow section is not grouted to ensure that the cement slurry does not penetrate into the displacement gauge. During the automatic grouting process, the grouting console judges whether to stop the grouting according to the signal of the liquid flow sensor, and sends instructions to the grouting pump motor through the servo drive to realize real-time control of the grouting process. The invention can realize segmented grouting, save the amount of cement slurry, improve the accuracy of data collection, and can precisely control the grouting time to ensure the quality of each segment of grouting.

Description

Technical field: [0001] The invention relates to the field of underground engineering monitoring, in particular to an automatic grouting device and a segmented grouting installation method for single-point displacement meter installation. Background technique: [0002] Monitoring and measurement in underground engineering construction is an important means to ensure the safety and quality of the entire underground engineering construction. Monitor the surrounding rock deformation, surface subsidence, and subsidence of buildings on the ground during construction, so as to determine construction countermeasures and measures in time to ensure safe construction. [0003] As an important link in construction monitoring, deformation monitoring of surrounding rock in underground engineering is of great significance for real-time evaluation of the safety and reliability of primary support and secondary lining design. At present, in the monitoring method of surrounding rock deformat...

AI Technical Summary

Problems solved by technology

Although this grouting method can achieve upward and downward grouting, the full-hole grouting will cause the grout to seep into the displacement sensor, thereby affecting the accuracy of the displacement reading; at the same time, this method uses a lot of grout, which is not economical; The criterion for terminating grouting in this method is the grouting of the exhaust and drainage pipes. There is a certain delay and misjudgment in manual judgment, and it is difficult to control the quality of grouting.

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