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Ultrahigh-strength rock layer wall forming method

An ultra-high-strength, rock formation technology, applied in excavation, sheet pile walls, construction, etc., can solve problems such as inability to form grooves, rock formations that cannot be milled, and obstacles to the construction of underground diaphragm walls, so as to reduce the difficulty and cost of groove formation. Groove cost, increase the effect of the construction field

Inactive Publication Date: 2017-04-26
SHANGHAI YUANFANG GROUNDWORK ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For ultra-high-strength rock formations, not only the blades are easily damaged and consume a lot, even some rock formations cannot be milled at all, resulting in failure to form grooves and hindering the construction of underground diaphragm walls

Method used

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  • Ultrahigh-strength rock layer wall forming method

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] A construction method for forming a wall in an ultra-high-strength rock formation, comprising the steps of:

[0017] 1), a plurality of holes are drilled at intervals on the rock formation; in the present invention, it is preferred to use a down-the-hole hammer to hammer the rock formation to hammer out a plurality of holes in the rock formation. Such as figure 1 The structure schematic diagram of the down-the-hole hammer is shown, and the down-the-hole hammer includes a hammer body 1 . A plurality of protrusions 2 are arranged on the surface of the hammer body 1 . A plurality of protrusions are arranged at intervals. The hammer body 1 and the protrusion 2 are made of suitable materials. The hammer body 1 impacts the rock formation, and the protrusions 2 can be used to form a plurality of spaced holes on the rock formation surface.

[0018] 2), milling an...

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Abstract

The invention discloses a ultrahigh-strength rock layer wall forming construction method. The method is characterized by comprising the following steps: 1) multiple holes are drilled in a rock layer at intervals; 2) the drilled rock layer is milled; and the rock layer is cut to shift out to form a groove; and 3) a reinforcement cage is lifted in the grove; and concrete is filled to form a wall. In the ultrahigh-strength rock layer wall forming construction method, firstly, multiple holes are drilled in the rock layer at intervals; and after the multiple holes are drilled at intervals, a blade of a grooving machine can break through the surface of the rock layer to enter the holes to cut the rock layer in the rotating process, so that the milling of the ultrahigh-strength rock layer becomes possible. The method reduces the grooving difficulty on the ultrahigh-strength rock layer, and is high in forming efficiency. Compared with the prior art, the process shortens the grooving time from 7 days to 1 day, and reduces the grooving cost. The method widens the construction field of underground continuous walls.

Description

technical field [0001] The invention relates to a method for forming a wall of an ultra-high-strength rock formation. Background technique [0002] The underground diaphragm wall is a foundation project. During construction, a trenching machine is used on the ground to excavate a narrow and long deep trench along the peripheral axis of the deep excavation project under the condition of mud retaining wall. After clearing the tank, hang the reinforcement cage in the tank, and then use the conduit method to pour underwater concrete to form a unit tank section. This is done section by section, and a continuous reinforced concrete wall is built underground as a water interception, anti-seepage, load-bearing, and water-retaining structure. The underground diaphragm wall is suitable for pumping stations, pools; building foundation pits; underground oil depots and warehouses; municipal pipe trenches and culverts; shafts of shield tunneling and other projects; various deep foundati...

Claims

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Application Information

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IPC IPC(8): E02D5/18E02D17/13
CPCE02D5/187E02D17/13
Inventor 梁艳文刘忠池
Owner SHANGHAI YUANFANG GROUNDWORK ENG
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