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Testing device and testing method for muck improvement effect evaluation

A technology of muck improvement and test equipment, which is applied in the direction of measuring equipment, earth square drilling, soil material testing, etc., can solve problems such as unstable pressure on the face of the tunnel, slow excavation speed, and inaccurate dregs, so as to improve construction efficiency , ensure safe excavation, and strong operability

Active Publication Date: 2022-08-05
GUANGZHOU METRO DESIGN & RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the slump, permeability, and shear strength of the muck often meet the requirements, but the actual shield tunneling speed is slow and the pressure on the tunnel face is unstable. Therefore, the improvement effect of muck in the actual soil chamber is evaluated according to the above three methods. inaccurate

Method used

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  • Testing device and testing method for muck improvement effect evaluation
  • Testing device and testing method for muck improvement effect evaluation
  • Testing device and testing method for muck improvement effect evaluation

Examples

Experimental program
Comparison scheme
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Embodiment

[0038] Example: as Figure 1-5 As shown, this embodiment provides a test device for evaluating the effect of slag soil improvement, including a screw slag discharging system, a pressurizing system, a continuous slag feeding system, a pressure sensor system and a sealed soil tank 7;

[0039]The screw slag discharge system includes a slag conveying device, a slag discharge port 3 and a slag conveying port 4-1, the slag conveying device is connected to the sealed soil tank 7 through the slag conveying port, and the slag discharge port 3 is connected to the slag conveying device;

[0040] The pressurizing system is connected with the sealed soil tank 7 and used to adjust the air pressure in the sealed soil tank 7;

[0041] The pressure sensor system includes an earth pressure sensor 6, which is arranged in the sealed soil tank 7;

[0042] The continuous slag feeding system includes a slag feeding conveying device, a slag feeding port 12 and a slag feeding conveying port. The slag...

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Abstract

The invention belongs to the technical field of muck improvement in shield construction, and provides a test device and a test method for muck improvement effect evaluation, which can simulate the physical and mechanical properties of muck in the actual shield excavation and deslagging process and intuitively evaluate the unobstructed degree of muck discharge. The actual pressure value of a shield soil cabin can be simulated, and whether improved muck is homogeneous and good in flow plasticity or not is evaluated from the new angle of transmission efficiency and apparent density of muck force; the device is reasonable in design and high in operability, a small-scale model test is carried out before actual shield construction, the construction efficiency can be improved, and safe tunneling of a shield is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of slag soil improvement in shield construction, and particularly relates to a test device and a test method for evaluating the effect of slag soil improvement. Background technique [0002] Because the earth pressure balance shield has many advantages such as high degree of mechanization, less mud pollution, less impact on the environment, construction safety, etc., it has been widely used in the excavation of various strata tunnels in combination with the muck improvement technology, and has become the first choice for urban subway construction. Way. [0003] The earth pressure balance shield uses the muck in the soil cabin as the medium to stabilize the water and soil pressure on the face. Therefore, the transfer efficiency of the muck force in the soil cabin is particularly important for the safety of actual construction and the control of stratum settlement. In order to ensure that the muck has good fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/00G01N33/24G01N3/08G01N9/00G01N19/00E21D9/06E21D9/12
CPCG01N11/00G01N19/00G01N9/00G01N3/08G01N33/24E21D9/0678E21D9/12E21D9/126Y02W30/91
Inventor 王凌余金张跃明朱碧堂梁剑朱正宜史策辉傅雅莉钟彦之潘伟波
Owner GUANGZHOU METRO DESIGN & RES INST
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