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Underground continuous wall excavation grooving method

An underground continuous wall and groove-forming technology, which is applied to sheet pile walls, buildings, infrastructure engineering, etc., can solve problems such as manual construction, and achieve the effect of improving efficiency and safety.

Active Publication Date: 2019-10-11
CHINA ROAD & BRIDGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Still another object of the present invention is to provide a method for excavating underground diaphragm walls to form grooves, which can not only relocate underground pipelines, but also overcome the shortcomings of manual construction in the reverse method

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  • Underground continuous wall excavation grooving method
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  • Underground continuous wall excavation grooving method

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0038] It should be noted that the experimental methods described in the following embodiments, unless otherwise specified, are conventional methods, and the reagents and materials, if not otherwise specified, can be obtained from commercial sources; in the description of the present invention, The terms "landscape", "portrait", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", The orientation or positional relationship indicated by "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have Certain orientations, co...

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Abstract

The invention discloses an underground continuous wall excavation grooving method. The method comprises the following steps of: arranging suspension protection of an underground pipeline, excavating part of soil below the underground pipeline, and then performing rotary drilling on a single underground continuous wall construction section downwards penetrating through the underground pipeline; putting half steel retaining walls into the single underground continuous wall construction section downwards penetrating through the underground pipeline, so that the two half steel retaining walls justsurround the single underground continuous wall construction section downwards penetrating through the underground pipeline; jacking the half steel retaining walls into the ground by using two impactdrillers; respectively grooving the two sides of the underground pipeline to be of the designed depth by using a hydraulic grab bucket, and performing rotary spraying to form holes in the soil body below the underground pipeline obliquely downwards by using a high-pressure rotary spraying machine; and pouring clear water into the groove formed by the hydraulic grab bucket and on one side of the underground pipeline, so that the clear water is injected into the groove formed by the hydraulic grab bucket and on the other side of the underground pipeline from the rotary spraying holes and the soil body below the underground pipeline is gradually crushed. According to the method, not only can the underground pipeline not be relocated, but also the defect of manual construction of a reverse construction method can be overcome.

Description

technical field [0001] The invention relates to the field of underground continuous wall construction. More specifically, the present invention relates to a method for excavating trenches in an underground continuous wall. Background technique [0002] The underground diaphragm wall is a kind of trenching machine used on the ground for basic engineering. Along the peripheral axis of the deep excavation project, a long and narrow deep trench is excavated under the condition of mud retaining wall. After the trench is cleaned, it is hung in the trench Reinforcement cages, and then use the conduit method to pour underwater concrete to form a unit trough section. In this way, a continuous reinforced concrete wall is built underground as a water interception, anti-seepage, load-bearing, and water-retaining structure. [0003] However, in the construction process of the underground diaphragm wall, it is often necessary to construct under the existing underground pipeline. Due to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/18
CPCE02D5/18
Inventor 贾其军郑甲佳
Owner CHINA ROAD & BRIDGE
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