Earth pressure balance shield machine, and earth pressure balance shield machine control system and control method thereof

Abstract

The application discloses an earth pressure balance shield machine. The earth pressure balance shield machine comprises a shield machine body and a thrust oil cylinder arranged on the shield machine body, wherein a cutterhead is arranged on the front portion of the shield machine body, a master driver is connected onto the cutterhead, a major spiral conveyer and a minor spiral conveyer are furtherarranged on the shield machine body, and the front ends of the major spiral conveyer and the minor spiral conveyer are respectively connected with a soil bin of the shield machine body and used for outputting slag soil in the soil bin. The earth pressure balance shield machine outputs the slag soil in the soil bin under cooperation of the minor spiral conveyer and the major spiral conveyer, achieves a good fine adjustment function for soil pressure in the soil bin through the minor spiral conveyer, and enables the soil pressure on an excavation face to accurately reach a preset soil pressurevalue, thereby effectively guaranteeing stability of the excavation face. The invention further provides an earth pressure balance shield machine control system and a control method thereof. The earthpressure balance shield machine control system and the control method thereof perform automatic control on the rotation speed of the major spiral conveyer and the minor spiral conveyer, and achieve accurate control for the slag discharge amount of the soil bin, thereby enabling the soil pressure of the excavation face to accurately reach the preset soil pressure value.

Description

technical field [0001] The invention belongs to the technical field of shield machines, and in particular relates to an earth pressure balance shield machine, an earth pressure balance shield machine control system and a control method thereof. Background technique [0002] The earth pressure balance shield machine has the advantages of small investment scale, simple construction method, small footprint, small impact on traffic and environment, and easy control of tunneling operations. It is widely used in the field of construction, especially in dense construction areas of cities and underground tunnel projects with heavy ground traffic. [0003] With the continuous development of municipal engineering construction, the requirements for earth pressure balance shield machines are also increasing. The small diameter (within 8 meters) earth pressure balance shield machines used in the past can no longer meet the requirements of some large municipal engineering construction. T...

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Problems solved by technology

[0004] However, when the existing ultra-large diameter earth pressure balance shield machine is used for construction control, due to the large excavation area and the serious influence of the physical properties of the soil, the friction of the soil on the cutter head on the earth pressure balance shield machine The resistance is large, which increases the load of the earth pressure balance shield machine and the torque of the cutter head, and in the process of advancing the earth pressure balance shield machine, the soil mass entering the soil chamber of the earth pressure balance shield machine per unit time The large volume leads to uneven transmission of earth pressure on the excavation surface, making it difficult for the earth pressure balance shield machine to ensure the stability of the excavation surface during the excavation process, thereby reducing the construction rate and increasing the construction cost

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