Soft rock electrochemical stabilization DC power supply device

Abstract

The invention provides an electrochemical stabilization direct-current power supply device for soft rock. The input end of a three-phase alternating current contactor is connected with a three-phase alternating current line, while the output end is connected with a high-frequency three-phase adjustable voltage-stabilizing current-stabilizing switching power supply, the input end of a three-phase alternating current leak source protector is the same as that of the three-phase alternating current contactor, the output end of the three-phase alternating current leak source protector is connected with a solenoid of the three-phase alternating current contactor, the input end of the high-frequency three-phase adjustable voltage-stabilizing current-stabilizing switching power supply is connected with the three-phase alternating current contactor, the output end of the high-frequency three-phase adjustable voltage-stabilizing current-stabilizing switching power supply is connected with a current inverter, the input end of the current inverter is connected with the high-frequency three-phase adjustable voltage-stabilizing current-stabilizing switching power supply, the output end of the current inverter is connected with an electrode, the input end of a digital timer is connected with the high-frequency three-phase adjustable voltage-stabilizing current-stabilizing switching power supply, and the output end of the digital timer is connected with the current inverter. The power supply and the current are continuously adjustable. The device saves electric energy, and the strength of the soft rock is improved by more than between 50 and 100 percent.

Description

technical field [0001] The invention belongs to the technical field of electrochemical reinforcement of soft rock, and more specifically relates to a DC power supply device for electrochemical reinforcement of soft rock. The device is suitable for the power supply required in the process of electrochemical soft rock reinforcement. Background technique [0002] In the roadway construction of geotechnical engineering, a kind of unfavorable rock mass - soft rock is often encountered. This rock mass is often rich in clay minerals, usually in three categories: kaolinite, illite and montmorillonite. Among the three kinds of stones, the performance of montmorillonite is the worst. It is a material with extremely active physical and chemical properties. It is easy to absorb water and swell, and the expansion stress will cause large deformation of soft rock roadways; The strength of the rock decreases rapidly, leading to instability and collapse of the rock mass, causing safety acc...

AI Technical Summary

Problems solved by technology

The electrochemical reinforcement method of soft rock is a new type of reinforcement method. Its principle is completely different from traditional reinforcement methods such as wall support and bolt reinforcement. The traditional method only aims at the balance of force without changing the soft rock. The material composition and structure of the rock, but the balance state of the force is easily broken due to the water absorption expansion and large deformation of the soft rock and induces instability, so it has great limitations and the effect is not good.

[0005] The power supply is a very important part in the electrochemical strengthening method of soft rock, and the ordinary alternating current cannot meet the performance requirements of electrochemical strengthening, and the direct current converted by a voltage converter can also not meet the requirements of the electrochemical strengthening process of soft rock. If the current is too low or the current cannot reach the magnitude of the current required for the electrochemistry of soft rock, and the electrode conversion cannot be performed, the electrochemical reaction of soft rock will only exist in a small area near the iron electrode, and the soft rock cannot be fully reinforced. Effect

Moreover, there is no over-current and over-voltage protection, which may easily cause accidents, damage electrical equipment, and endanger personal safety.

Images