Thixotropic slurry rock-carrying capacity simulation test platform

Abstract

The invention belongs to the technical field of underground engineering tests, and particularly relates to a thixotropic slurry rock-carrying capacity simulation test platform. According to the technical scheme, the thixotropic slurry rock-carrying capacity simulation test platform comprises a grouting device, an outer pipeline and an inner pipeline used for simulating a jacking pipeline, and a containing area used for containing rock debris exists between the inner pipeline and the outer pipeline, the thixotropic slurry rock-carrying capacity simulation test platform further also comprises a plurality of slurry discharging devices used for uniformly discharging thixotropic slurry into the storage area, a gradient adjusting device used for adjusting the inclination degree of the inner pipeline and a supporting device used for supporting the outer pipeline. The simulation platform structure can be adjusted according to actual construction conditions, the rock carrying capacity of thixotropic slurry in different construction scenes is simulated, and the thixotropic slurry proportion and grouting scheme suitable for the actual construction scenes are obtained.

Description

technical field [0001] The invention belongs to the technical field of underground engineering tests, and in particular relates to a thixotropic mud rock-carrying ability simulation test platform. Background technique [0002] Most of the underground pipeline laying construction methods adopt the pipe jacking construction method. The pipe jacking construction method refers to the use of hydraulic pressure to drive the pipe jacking machine and the pipe joints to be laid underground one by one to the pipe jacking without digging the surface. Trenchless underground pipeline laying construction technology for receiving wells. Thixotropic mud is often used in pipe jacking construction. The thixotropic mud is mixed with the soil outside the pipe to lubricate and reduce drag, reducing the pipe jacking resistance. When encountering hard rock, in order to prevent excessive rock debris from causing Pipeline lockup requires thixotropic mud to carry rock debris to be discharged, and th...

AI Technical Summary

Problems solved by technology

However, there are the following problems in the use of this system: In actual construction, the proportion of thixotropic mud and the grouting scheme need to be changed according to actual construction requirements to achieve the best rock-carrying effect

Therefore, the simulation device needs to be able to simulate the actual construction scene, but the structure of the grouting mechanism and the pipe jacking mechanism in this system is fixed, and the structure cannot be adjusted to simulate different construction scenarios, that is, the thixotropic mud ratio and grouting with good rock-carrying effect cannot be obtained. Program

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