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Block fracture rock mass excavation disturbance and digging machine shield stress monitoring model test system and method

A model test and force monitoring technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, measuring heat, measuring devices, etc., to achieve the effect of satisfying strength, convenient cutting, and easy experimental operation.

Inactive Publication Date: 2018-06-29
SHANDONG UNIV
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Problems solved by technology

The study of the excavation disturbance process and mechanism of block-cracked rock mass during the excavation process of tunnel and underground engineering has important guiding significance for engineering disaster prevention and mitigation. There are few studies on the process and mechanism, and only a single influencing factor is used to carry out model test research on the excavation disturbance process of the block-cracked rock mass during the excavation process

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  • Block fracture rock mass excavation disturbance and digging machine shield stress monitoring model test system and method
  • Block fracture rock mass excavation disturbance and digging machine shield stress monitoring model test system and method
  • Block fracture rock mass excavation disturbance and digging machine shield stress monitoring model test system and method

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0038] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The invention discloses a block fracture rock mass excavation disturbance and digging machine shield stress monitoring model test system and method. The method comprises the following steps: a fractured rock mass is prefabricated by adopting a mold, and moreover, a cutter is used for carrying out cutting to produce needed fractures; a hydraulic loading system adopts a model test bed as a counterforce structure to apply pressure on the fractured rock mass and simulate real stress; a water pressure simulation system adds water into the fractured rock mass and realizes the influence of underground water on the destabilization process of the fractured rock mass; a digging excavation system pushes jacks under the control of a motor to control a cutterhead to carry out rock breaking and diggingon a part to be excavated; a monitoring system monitors the change of a stress field of the fractured rock mass in the process of digging excavation; and moreover, monitoring elements are arranged onthe surface of a digging machine shield to monitor the stress of the shield in the process of digging.

Description

technical field [0001] The invention relates to a model test system and method for monitoring the excavation disturbance of a block-cracked rock mass and the stress of a tunneling machine shield. Background technique [0002] With the rapid development of my country's economy, a large number of major infrastructure projects such as water conservancy and hydropower projects, railway and highway traffic projects have accelerated the pace of construction, which has greatly promoted the construction of tunnel projects. In the construction projects in Southwest my country, the application of tunnel engineering is becoming more and more extensive. Instability of block-cracked rock mass is a common form of disaster in underground engineering. During the tunnel construction and operation period, block cracks and rock mass instability are prone to occur, causing huge losses to human life and property, causing delays in construction schedules, damage to machinery and equipment, and i...

Claims

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Application Information

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IPC IPC(8): G01N3/12G01K11/32G01K11/3206
CPCG01K11/32G01N3/12
Inventor 李术才胡杰刘洪亮李利平周宗青石少帅赵瑞杰范宏运
Owner SHANDONG UNIV
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