Measurement device and measurement method for residue carrying capability of mud

Abstract

The invention discloses a measurement device and measurement method for residue carrying capability of mud. The device comprises a vacuum pump, a vacuum bottle, a measurement cylinder, a mixing cylinder and a mud tank, wherein the mud tank is connected to the bottom f the mixed cylinder by a pipe, the top of the mixed cylinder is connected to the bottom of the measurement cylinder by a pipeline, the top of the measurement cylinder is connected to the vacuum bottle by a pipeline, the vacuum pump is correspondingly connected with the vacuum bottle by an exhaust pipe, valves F5, F3 and F1 are respectively arranged between the mud tank and the mixed cylinder, between the mixed cylinder and the measurement cylinder and between the measurement cylinder and the vacuum bottle, filtering nets are respectively arranged at an upper part of the measurement cylinder and at a lower part of the mixed cylinder, and muck to be mixed is placed on the filtering net in the mixed cylinder. The device is simple in structure and is convenient to operate, a large amount of contrast experiments are appropriately developed under a laboratory condition, and the residue carrying capability of the mud and theinfluence of a main performance index of the mud on the residue carrying capability are determined.

Description

technical field [0001] The invention relates to the technical field of shield construction testing devices, in particular to a mud slag-carrying capacity measurement device and a measurement method for a mud-water shield machine. Background technique [0002] Slurry is a semi-colloidal suspension formed by mixing water, bentonite, clay and additives in a certain proportion. In mud-water shield construction, the circulation system transports the pressurized mud to the mud tank, forming a mud film or seepage area on the excavation surface to balance the soil pressure and water pressure on the mud excavation surface. The slag is mixed with the mud and discharged from the circulation system. Mud plays an important role in stabilizing the excavation face and slag discharge. Therefore, it is necessary to conduct in-depth research on the performance of mud from the aspects of stabilizing the excavation face and slag-carrying capacity. At present, there are targeted test devices f...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a mud slag-carrying ability measuring device and measurement method. Aiming at the problem that there is no direct measurement method for the mud slag-carrying ability, and the effect of viscosity and specific gravity on the slag-carrying ability is not clear, the present invention can In the early stage of mud-water shield tunnel construction, according to the stratum conditions, the slag-carrying capacity of different proportions of mud is tested and studied in order to determine the optimal mud proportion scheme.

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