Shield tunneling machine overexcavation amount calculation method
A calculation method and technology of shield machine, which are applied in the fields of earthwork drilling, design optimization/simulation, geometric CAD, etc., can solve the problems of not considering the dynamic process of shield machine, over-excavation error, etc., and achieve high accuracy and convenience. The effect of operation and calculation results is accurate
Pending Publication Date: 2022-04-22
SHANGHAI MECHANIZED CONSTR GRP
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[0003] In the existing methods for calculating the overbreak of the shield machine, the dynamic process of the shield machine is usually not considered, and only the static and single posture of the shield machine is analyzed, and the center of the thrust circle curve of the shield machine is roughly considered to be It is on the center line in the length direction of the shield machine. In fact, the circular curve is not like this. There is a certain error in the amount of overbreak calculated by this method.
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[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.
[0043] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components or the interaction relationship between two ...
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The invention belongs to the technical field of tunnel excavation, and discloses a shield tunneling machine overexcavation amount calculation method, which simulates a dynamic process in a shield tunneling machine turning propulsion process by simulating three continuous point positions in a shield tunneling machine turning propulsion two-ring process, and can obtain a cutting range of a shield tunneling machine cutterhead based on postures of the shield tunneling machine at the three continuous point positions. And determining the radius R1 of the cutting range of the cutterhead, obtaining the sweeping range of the shield tunneling machine shell, determining the radius R2 of the sweeping range of the shield tunneling machine shell, and determining the overexcavation amount RO = R1-R2. Compared with the prior art that only the static and single posture of the shield tunneling machine is analyzed, the method has the advantage that the calculation result is more accurate. Besides, simulation of the dynamic process of the shield tunneling machine is realized in three-dimensional modeling software, for cases of different models and sizes or different turning radiuses of the shield tunneling machine, only relevant parameters need to be modified when the over-excavation amount is calculated, convenience and rapidness are achieved, and the accuracy rate is high.
Description
technical field [0001] The invention relates to the technical field of tunnel excavation, in particular to a method for calculating the overbreak amount of a shield machine. Background technique [0002] The shield machine is an engineering machine used in urban tunnel construction. There are inevitably turning parts in the tunnel design route, so the shield machine is equipped with hinged cylinders to enable curved construction. During the tunneling process of the shield machine along the curve, it is in the state of deviation correction, and the copying knife on the cutter head is also in the open state, and the actual excavation volume exceeds the theoretical excavation volume. Therefore, it is extremely important to calculate the overbreak amount of the shield machine during the curve turning process for the excavation quality of the tunnel. [0003] In the existing methods for calculating the overbreak of the shield machine, the dynamic process of the shield machine i...
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IPC IPC(8): G06F30/20G06F30/17E21D9/08G06F111/04
CPCG06F30/20G06F30/17E21D9/08G06F2111/04
Inventor 夏建坤徐佳乐翁晨刚赵培
Owner SHANGHAI MECHANIZED CONSTR GRP