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A design method for the layout of shield muck soil conditioner injection port

A technology of muck improvement and soil improvement agent, which is used in earthwork drilling, design optimization/simulation, computer-aided design, etc., can solve the problem of inability to accurately calculate the filling amount, injection pressure, unclear injection mechanism of muck improvement, cutting problems such as large resistance, to achieve the effect of improving the efficiency of muck improvement, reasonable design and layout results, and accurate and uniform coverage

Active Publication Date: 2022-07-12
BEIJING URBAN CONSTR GROUP +1
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Problems solved by technology

The injection mechanism for muck improvement is not clear, and it is impossible to accurately calculate the reasonable filling amount and injection pressure, and it is difficult to ensure the effect of muck improvement. When the injection pressure and injection amount are insufficient, the shield cutter cuts the unimproved original formation, and the cutting resistance is large , The tool wears quickly, which seriously affects the construction efficiency

Method used

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  • A design method for the layout of shield muck soil conditioner injection port
  • A design method for the layout of shield muck soil conditioner injection port
  • A design method for the layout of shield muck soil conditioner injection port

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Embodiment Construction

[0125] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the embodiments and the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but not to limit the present invention.

[0126]In the present invention, unless otherwise expressly specified and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication between the two elements or the interaction relationship between th...

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Abstract

The invention provides a design method for the layout of shield muck soil conditioner injection ports, which specifically includes the following steps: determining the stratum permeability and diffusion characteristics; determining the muck soil improvement methods of different strata; The parameters of the rheological equation; the required injection amount of the slag soil conditioner per unit time to meet the requirements of shield tunneling under different strata conditions is calculated by the diffusion model Q ; Design the injection amount of a single injection port on the shield cutter head, the trajectory radius of each injection port, and the improved width of each injection port according to the injection amount required per unit time. The invention proposes a design method for the arrangement of the injection port on the shield cutter head, which fills the gap of the current research in this area. By using the design method, the injection port can be arranged more scientifically, so that the slag modifier can evenly cover the entire excavation surface, and improve the Improve the efficiency of soil improvement and reduce costs.

Description

technical field [0001] The invention relates to the technical field of shield tunnel construction, in particular to slag soil improvement during construction, and in particular to a design method for the layout and design of a shield slag soil improver injection port. Background technique [0002] Shield construction is widely used in the construction of major cities due to its advantages of safety, reliability, speed, economy and environmental protection. Shield construction has become a commonly used municipal rail transit construction method at home and abroad. Slag improvement is to inject admixtures such as foam or bentonite into the front of the cutter head, in the soil bin or in the screw conveyor through the additive system configured by the shield machine, and use the rotary stirring of the cutter head, the stirring device of the soil bin or the rotation of the screw conveyor. The main purpose of mixing the additive and the slag is to make the slag cut by the shield...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/28E21D9/06G06F111/10G06F113/08G06F119/14
CPCG06F30/28E21D9/0678G06F2111/10G06F2113/08G06F2119/14Y02W30/91
Inventor 张晋勋殷明伦江玉生武福美江华周刘刚孙正阳张雷李博宋祥林
Owner BEIJING URBAN CONSTR GROUP
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