JPH011820A - Waterproof pile row wall construction method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a method of constructing a water-tight continuous wall using a row of piles by filling a series of underground pile holes excavated with an earth auger with core material. It is.

[Conventional technology]

The conventional water-stoppile row wall construction method involves excavating a series of pile holes with an earth auger, filling the pile holes with mortar through the earth auger, and forming a row of mortar piles to form a continuous wall with water-stop properties. The wall is being built underground.

[Problem that the invention seeks to solve]

In the above conventional construction method, the continuous wall constructed there is made of a row of rigid mortar piles, so it does not follow the rigidity of the surrounding ground, and there is a risk that it will be destroyed in the long term and lose its water-stopping properties. Ta.

This invention was devised to solve the problems of conventional construction methods, and its purpose is to maintain water-tightness for a long time by following the rigidity of the ground, and also to be able to maintain water-tightness for a long time from relatively shallow places. An object of the present invention is to provide a construction method for constructing a continuous wall using rows of piles, which can also be used to prevent leakage of sewage.

[Means for solving problems]

This invention for the above purpose involves excavating a series of pile holes in the ground with an earth auger, filling each pile hole with asphalt mastic from the earth auger, and creating a watertight continuous wall with interconnected asphalt mastic piles. It will be built underground, thereby solving the problems of the conventional method.

[For production]

The water-stop pile wall made by the above construction method is composed of interconnected asphalt mass deck piles, so the mortar pile has no rigidity and follows the rigidity of the surrounding ground, so it remains in the ground for a long period of time. Even if there is water, it will not lose its waterproof properties.

〔Example〕

A hollow earth auger 2 is attached to the crawler crane 1, and a pressure-resistant and heat-resistant metal hose 3 is attached to the upper end of the earth auger 2 so as not to interfere with the rotation of the earth auger 2. 2 and the mastic pump 4 are connected.

Next, the earth auger 2 is rotated to drill a pile hole 6 in the ground 5. After confirming that the auger tip has reached a predetermined depth, the rotation of the earth auger 2 is stopped, and the asphalt mastic is transferred from the waiting transport vehicle to the mastic pump 4. The asphalt mastic is then delivered to the inside of the earth auger 2 via the metal hose 4.

The asphalt mass deck is pumped from the top of the earth auger 2 to the tip of the A-blade, ie, to the bottom of the pile hole 6 as shown in the figure. With J3 in this state, the earth auger 2 is pulled up at a slow speed, and asphalt mastic a is press-fitted into the pile hole 6 while being pulled up, and the excavated soil around the earth auger is replaced with asphalt mastic.

When the press-fitting of the asphalt mastic a to the predetermined height at the top of the pile hole 6 is completed and the asphalt mastic column 7 of the required height is completed, the mastic pump 4 is stopped and the earth auger 2 is pulled up from the ground 5. , move to the next drilling position.

The above asphalt mastic piles 7 are formed in two parts, leading piles A and trailing piles B. After forming the leading piles A every other time, trailing piles B are formed between the leading piles A. Formed into a series of asphalt mass deck piles 7.7 in succession! I! 8 and Nazu. In addition, trailing pile B is installed to increase the water-stopping effect.
The pile hole is excavated by cutting down the side of the preceding pile A,
The asphalt mastic forming trailing pile B is the leading pile A.
It is integrated with the asphalt mastic to form a continuous wall 8 made of seamless rows of piles.

〔Effect of the invention〕

As mentioned above, this invention uses an earth auger to create pile row walls made of asphalt mastic, so unlike the case of mortar piles, which require dewatering depending on the geology, it depends on the geology of the ground. It is possible to create a row of pile walls with excellent water-stopping properties. In addition, asphalt mastic is easy to heat or pour at room temperature, and it dissolves at low temperatures, so it can be simply filled into pile holes.
The rigidity can be changed arbitrarily by changing the mix of aggregate etc.
It has features such as being able to adapt to the rigidity of the surrounding ground, preventing destruction by the ground, and maintaining water-tightness for a long time.

[Brief explanation of drawings]

The drawings show one embodiment of the water-stop pile row wall construction method according to the present invention, and FIGS. 1 and 2 are process explanatory diagrams, FIG. 3 is a plan view of the pile row wall, and FIG. 4 is its front view. It is a diagram. 1...Rough lane 2...Earth auger 3...Metal hose 4...Mastic pump 5...Ground 6...
・Pile hole 7... Asphalt mastic pile 8... Continuous wall 9... Asphalt mastic patent applicant Shimizu Corporation and two others - Figure 3

Claims (1)

[Claims] A series of pile holes are excavated underground using an earth auger, each pile hole is filled with asphalt mastic from the earth auger, and a watertight continuous wall made of interconnected asphalt mastic piles is created underground. A waterproof pile row wall construction method that is characterized by the ability to