Water-rich diabase and slate irregular mutual invasion rock shield residue soil improving method

A kind of muck improvement and diabase technology, which is applied in earth-moving drilling, mining equipment, tunnels, etc., can solve the difficulties in controlling the parameters and attitude of shield excavation, the long time for checking the tool and changing the tool, Problems such as the difficulty of opening a warehouse and changing a tool in a warehouse can improve the carrying capacity of packages, improve the parameters of shield tunneling, and reduce the sedimentation and consolidation of dregs.

Inactive Publication Date: 2015-11-11
BEIJING URBAN CONSTR DESIGN & DEV GRP CO +1
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AI Technical Summary

Problems solved by technology

Soft and hard rocks are distributed alternately, and the strength of hard rock is high, so it is difficult to excavate, and the excavation speed is slow. In addition, severe gushing, large amount of accumulated water and slag, time-consuming and labor-intensive, and low excavation efficiency
The frequency of checking and changing tools is high when opening a warehouse, and when it is serious, the warehouse is opened every cycle; because the water is rich in the whole process and the gushing is serious, it is difficult to open and change tools, and the time for checking and changing tools is long; the tools are abnormally worn Seriously, the cutter head has high torque and high thrust, and the cutter head is easy to get stuck, unable to start, and there is a construction risk of being forced to stop for processing
The uniformity of the formation is poor, the interaction characteristics are obvious, and it is difficult to control the tunneling parameters and tunneling attitude of shield tunneling

Method used

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Embodiment Construction

[0025] In a broad embodiment of the present invention, a method for improving water-rich diabase and slate irregular mutual intrusion rock shield with muck, through the filling channel of the cutter head panel and the radial arms on the front of the shield cutter head Hole position, the polymer filling system is used to fill high-volume high-molecular polymers into the dregs, and at the same time, through the filling channels and holes in the soil silo, the foam mixing system is used to add medium-concentration polymers to the dregs Foam for compound injection.

[0026] Slag improvement materials generally include surfactants (such as foaming agents), minerals (such as clay or bentonite), polymers (such as polymers) and other composite additives. The filling positions are generally the injection holes distributed on the cutter head panel, the soil bin partition and the screw machine cylinder. The material selection and filling method should be comprehensively considered accord...

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Abstract

The invention discloses a water-rich diabase and slate irregular mutual invasion rock shield residue soil improving method. According to the method, through an injection passage of a cutter head panel and hole positions on each spider arranged in front of a shield cutter head, a polymer injection system is used for injecting high-volume high-molecular polymers into residue soil; meanwhile, through an injection passage and hole positions in a soil cabin, a foam mixing generating system is used for injecting medium-concentration foam into the residue soil for composite injection.

Description

technical field [0001] The invention relates to the technical field of improvement of shield dregs, in particular to a method for improvement of dregs for shield tunneling of irregular inter-intrusion rocks of water-rich diabase and slate. Background technique [0002] Slag improvement means that in order to make the slag formed by the cutting of the shield machine cutter head have good flow plasticity, suitable consistency, low water permeability and low frictional resistance, the special adding device for the shield machine is added to the front of the cutter head, The additive is injected into the soil bin and the screw conveyor, and the additive is fully mixed with the muck by using the rotary stirring of the cutter head, the stirring device of the soil bin, and the rotating agitation of the screw conveyor, so as to improve the properties of the muck and facilitate the earth pressure balance of shield tunneling. The role of tunneling control. [0003] The main purpose o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06
Inventor 周刘刚杨凯恽军武福美朱伟王良王东清
Owner BEIJING URBAN CONSTR DESIGN & DEV GRP CO
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