Geological temperature sensitive material capable of simulating weak bedding plane, making method and temperature control system thereof

Abstract

The invention relates to the field of geomechanics, in particular to a geomechanical temperature sensitive material capable of simulating a weak bedding plane, and a making method and a temperature control system thereof. The material comprises the following components by weight: 45-55 parts of barite powder, 1.8-2.5 parts of cement, 1-4 parts of water, 1-5 parts of 46# waste hydraulic oil, 2-6 parts of paraffin, and 0.5-2 parts of rubber powder. The making method of the material consists of: mixing barite powder, rubber powder and cement uniformly, adding paraffin, 46# waste hydraulic oil and water into the obtained material 1, stirring the materials evenly and conducting molding. The material provided by the invention can be used in a temperature control system for temperature control experiment, and the system includes carbon fiber heating wires, a high precision temperature controller, non-wire breakage T type wiring terminals, a first group of lead, an air switch and a power supply. Multiple groups of the carbon fiber heating wires are placed in the geomechanical temperature sensitive material capable of simulating a weak bedding plane, and is connected to the first group of lead by a parallel connection mode. The geomechanical temperature sensitive material provided by the invention can simulate mechanical testing of the weak bedding plane.

Description

technical field [0001] The invention relates to the technical field of geomechanical model test materials and preparation, in particular to geological temperature-sensitive materials capable of simulating weak layers, a manufacturing method thereof, and a temperature control system. Background technique [0002] The geomechanics model is to study the influence of geological structure conditions on engineering from the point of view of mechanics and by means of experiments. Weak layer refers to the structural surface whose mechanical strength is obviously lower than that of the surrounding rock, and is generally filled with a certain thickness of weak material. Such as muddying, softening, broken thin interlayer, etc., have the characteristics of low strength, high compressibility, and easy softening when exposed to water. The weak surface is a controlling weak surface in the geomechanics model test, which can affect the structure of the rock mass and control the stability o...

AI Technical Summary

Problems solved by technology

However, this overall heating model method has many disadvantages: 1. During the long-term operation of the project, the strength of the broken zone and weak layer gradually decreases, and the mechanical parameters of other rock masses do not change much. The overall heating model makes the rock The mechanical parameters of the body also change, which does not conform to the actual working conditions of the project. 2. The rock mass is formed in the form of blocks, and the material difference between the rock mass and the weak layer is large, which makes it difficult to form the entire model

3. The laying of the heating system is cumbersome and difficult to construct. Electric leakage is prone to occur under long-term working conditions, which poses a threat to the safety of test personnel.

The material uses the principle of rolling friction and sliding friction to simulate the weak layer, and the change of mechanical parameters can be realized in one model, but it cannot be laid in any shape and at any position when laying the weak layer, and the applicability is poor

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