Shield machine suitable for high crustal stress soft rock stratum

Abstract

The invention provides a shield machine suitable for high crustal stress soft rock stratum. The machine comprises a cutter device and a shield body, the shield body is internally provided with a frontshield partition plate, the front shield partition plate is provided with an advanced tunneling passage, the advanced tunneling passage is internally provided with an advanced tunneling device, the advanced tunneling device includes an advanced tunneling cutter, a spiral blade shaft, a guide rail, advanced tunneling drive, an advanced support device and an advanced propulsion device, the advancedtunneling cutter is connected to the spiral blade shaft, the spiral blade shaft is connected to an advanced drive device, the advanced propulsion device is arranged between the advanced drive deviceand the advanced support device, the advanced support device is supported on the shield body, and the guide rail is arranged at the advanced tunneling passage. The machine has the advantages that themachine not only facilitates the early release of the energy accumulated in a rock body, but also utilizes an expansion and contraction function of the shield body to achieve secondary stress release,and achieves integrated construction of horseshoe-shaped full-section excavation, slag discharge and lining machinery of the high crustal stress soft rock stratum.

Description

technical field

[0001] The invention relates to tunnel construction equipment, in particular to a shield machine suitable for high ground stress soft rock formations. Background technique

[0002] my country's railway construction has entered a stage of rapid development, and tunnel engineering is increasingly developing in the direction of "long, large, deep, and difficult". Especially in the western region of my country, there are high mountains and deep mountains, and many areas are mostly at the junction of plates, with complex geological conditions. The high level of ground stress makes tunnel construction difficult, and the problem of large deformation of the tunnel caused by high ground stress is particularly prominent. In this kind of tunnel construction, frequently used construction methods and support systems, such as step method, three-step method, double-side wall pilot pit method, CD method, CRD method, etc., are mostly based on the new Austrian method, namely B...

Examples

Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] Such as figure 1 As shown, a shield machine suitable for high ground stress soft rock formations includes a cutter head device 1 arranged at the front, a drive device 2 adjacent to the rear of the cutter head device, a shield body 3 supporting the entire equipment, and an advanced Tunneling device 4, main propulsion system 5, segment assembly machine 6 and conveyor 7.

[0024] The shield body 3 includes a front shield 301, a middle shield 302 and a tai...

technical field

[0001] The invention relates to tunnel construction equipment, in particular to a shield machine suitable for high ground stress soft rock formations. Background technique

[0002] my country's railway construction has entered a stage of rapid development, and tunnel engineering is increasingly developing in the direction of "long, large, deep, and difficult". Especially in the western region of my country, there are high mountains and deep mountains, and many areas are mostly at the junction of plates, with complex geological conditions. The high level of ground stress makes tunnel construction difficult, and the problem of large deformation of the tunnel caused by high ground stress is particularly prominent. In this kind of tunnel construction, frequently used construction methods and support systems, such as step method, three-step method, double-side wall pilot pit method, CD method, CRD method, etc., are mostly based on the new Austrian method, namely B...

Examples

Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] Such as figure 1 As shown, a shield machine suitable for high ground stress soft rock formations includes a cutter head device 1 arranged at the front, a drive device 2 adjacent to the rear of the cutter head device, a shield body 3 supporting the entire equipment, and an advanced Tunneling device 4, main propulsion system 5, segment assembly machine 6 and conveyor 7.

[0024] The shield body 3 includes a front shield 301, a middle shield 302 and a tai...

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