Intelligent small-volume dynamic slurry matching method and system

Abstract

The invention relates to an intelligent small-volume dynamic slurry matching method and system. Program-controlled slurry matching is adopted; 1) when it is detected that the liquid level in a slurrymatching barrel is low and a high-level pressure gauge loses efficiency, small-volume slurry matching is started; 2) the slurry returning density C0 and the remaining volume V0 of slurry in the barrelare detected, and a slurry small-volume V hole and a density C hole finally needed by a drilled grout hole are detected, and the small volume Vx and the design density Cx required for slurry matchingin the barrel this time are calculated; 3) Cx and C0 errors are controlled and can be corrected; and 4) multiple-time small-volume slurry matching is carried out, grouting is carried out after the standard is reached, and small-volume exiting is carried out. Firstly, a calculation method ensures that the required density and volume are obtained. The density error is controlled, and the accuracy is high. A multiple-time small-amount slurry and water adding manner is adopted, the accuracy is high, and waste caused by excessive increase in the slurry amount is avoided. The density detection of the drilled grout hole is achieved through a slurry return density meter, and accurate density measurement is facilitated. The problems about extremely large waste, environmental pollution and cleaningtrouble caused by large-volume program-controlled slurry matching are solved. Small volume density and volume accurate matching, detection and program control are avoided. The small-volume slurry matching system uses a smart grouting circulated loop system. The intelligent small-volume dynamic slurry matching method and system can be used in an intelligent grouting unit system of a hydropower station.

Description

technical field [0001] The invention relates to an intelligent small-volume dynamic grout mixing method and system, and relates to a computer programming control method for a grouting unit machine system. It is used for engineering measurement and quality control in hydropower station grouting engineering. It belongs to capacity and flow measurement (G01F). Background technique [0002] The slurry mixing process is the process of reconfiguring the raw cement slurry with a density of 1.82g / cc and water into a cement slurry with a certain density. The Chinese invention patent application discloses <intelligent stepless grouting method> (application number 201810529060.0). This patent provides a grouting method in a grouting system controlled by computer programming. This method solves the problem of unstable quality, high cost and easy falsification of artificial grout in the traditional grouting process, which damages the quality of the grouting project. To solve the...

AI Technical Summary

Problems solved by technology

Since the amount of grouting in each grouting hole is determined by the height of the cement layer designed at different locations of the hydropower station, it is a variable, and the size of the grouting bucket cannot achieve many specifications. >In the program-controlled process, when the grouting hole is injected with an integer number of n barrels of grout, it can be filled with only a small amount of grout, for example: only 1 / 3 barrel of grout, If a bucket of slurry is still prepared according to the above original procedure (adding water and adding slurry), then after the grouting, the remaining 2 / 3 of the slurry in the mixing bucket will be discharged by the sewage method, which will inevitably cause great waste, environmental pollution and cleaning trouble

[0005] If you want to control only 1 / 3 barrel of grout required for the grouting hole in the grout mixing tank, it is impossible to prepare 1 / 3 of the grout according to the above original procedure at this time: see figure 1 , the detection value of the slurry density is obtained by the pressure difference between the high and low pressure sensors 1C and 1D (see the above patent specification for details), and now the liquid level drops (for example H1=1 / 3H), at this time the high pressure The sensor 1C has not been able to measure the slurry pressure, so it is impossible to continue to use the above-mentioned original program intelligent slurry mixing method after running to this dynamic slurry mixing condition, and it is necessary to develop a new intelligent dynamic slurry mixing method and system

Images