JPH07111051B2 - Geological improvement chemical injection device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a geotechnical chemical injection device for injecting a geotechnical chemical solution for the purpose of strengthening the ground in underground construction and the like, particularly in construction in which pipes such as fume pipes and steel pipes are passed between vertical shafts. It is about.

[0002]

2. Description of the Related Art A geological improvement chemical liquid injector of this type has a main body of a chemical liquid tank, a pump, etc. arranged near the outside of a vertical shaft at a construction site, and a boring machine inside the vertical shaft at a construction site. Is arranged, and the apparatus main body and the boring machine are connected by a conduit such as a hose to form the whole.

Therefore, the work of the geological improvement chemical liquid injection device is performed as a joint work by a worker who operates and manages the device body outside the vertical shaft and a worker who operates and manages the boring machine inside the vertical shaft. Has been.

[0004]

By the way, in the work using such a geological improvement chemical liquid injector, labor saving is demanded due to lack of manpower and it is necessary to surely perform good work. Is. Especially hollow
A horizontal boring that pierces a rod in a vertical position on a vertical wall.
Position for the chemical injection work using a machine
The height of the is not always constant, but changes
Then, on the horizontal boring machine installed at that construction position
The visibility of the drilling condition varies according to various factors. Also, that
The operation panel should be installed integrally on the horizontal boring machine.
In addition, the visibility and operability of the operation panel are also poor.
Sometimes becomes more complicated, and the work becomes rather complicated, resulting in labor saving.
It may be against the purpose.

The present invention was made on the basis of such a background, and improved geology using a horizontal boring machine.
In a chemical injection device, drilling with a horizontal boring machine
In addition to making it easier to see the hole status, the visibility and operation of the operation panel
The purpose of the present invention is to save labor by ensuring the workability, and to facilitate good work reliably.

[0006]

In order to achieve this object, the invention according to claim 1 has a geological improvement chemical liquid injecting device having an apparatus main body and a boring machine arranged at a position separated from the apparatus main body. And the device body is
The boring machine has a water tank, a chemical liquid tank, a pump for pumping water, a chemical liquid, etc., and a switching valve for switching a pipe path from the water tank and the chemical liquid tank to the pump. and has a hollow rod mounted, at which its tip end of the hollow rod to form a discharge port of the chemical solution to be pumped from the pump was connected between said apparatus main body and the boring machine in line, before
The boring machine has a hollow rod in a horizontal position and a vertical wall.
A horizontal boring machine for perforating a surface, the device body
And an operation panel separate from the boring machine
Along with the operation panel, the operation switch of the switching valve
And the rotation speed indicator of the boring machine,
It is characterized in that a rotation speed regulator of a rolling machine is installed . Further, the invention of claim 2 is the same as claim 1
In the geological improvement chemical liquid injection device described, in the device body
Install a flow meter to measure the discharge flow rate from the pump
In addition, the measured value of the flow meter is displayed on the operation panel.
It is characterized in that a display device is provided.

[0007]

According to the invention as set forth in claim 1, the combination of water and the chemical liquid is used.
In the chemical injection work using this type of geological improvement chemical injection device, it is possible to immediately switch the water and the chemical, which must always be performed, from the vicinity of the boring machine by the operation panel .

Water used by switching between water and chemical liquid
Mount the operation panel of the flat boring machine
As it is separate from the ring machine, depending on the construction position
What is the position of the horizontal boring machine installed
Instead, the operator should check the drilling situation of the horizontal boring machine.
Operation panel while checking easily in the vicinity or in a position where it is easy to see
Operates the switching valve between water and chemicals at an appropriate timing
can do.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings.

In the figure, 1 is a ground improvement chemical liquid injector (hereinafter, simply referred to as an apparatus), and 2 is a vertical shaft as a construction site.

The device 1 has a device body 3 and a horizontal boring machine (hereinafter referred to as a machine) 4, and a hose, an electric cable and an operation panel for connecting the device body 3 and the machine 4 together. The whole is composed. In this specification, horizontal boring machine
Is a hollow rod as shown in FIG. 1 and described later.
A boring machine that pierces the vertical wall with the
Means

The main body 3 of the apparatus is mounted on the cargo bed of the truck as a whole.

The apparatus main body 3 includes a water tank 5, a tank 6 for liquid A and a tank 7 for liquid B which are two-liquid type ground improvement chemicals.
And a pump 8 for pumping these water and chemicals.

The A liquid tank 6 and the B liquid tank 7 as the chemical liquid tanks are provided with agitators 6a and 7a, respectively, which are agitated by these agitators 6a and 7a to be properly adjusted. The A liquid or the B liquid is supplied to the A liquid tank 6 or the B liquid tank 7, respectively.

The pump 8 is a four-cylinder, two-line type chemical pump that performs the same discharge operation in two independent systems. The pump 8 is driven by an electric motor, and the drive is performed by the pump. The control panel 8a is controlled by an inverter with a variable discharge amount.

Then, from the A liquid tank 6 and the B liquid tank 7 to the pump 8, the A liquid pipe line 6 is provided.
b and the B liquid pipe line 7b are distributed and connected to the above two systems, and switching valves 11 and 12 are installed in these pipe lines 6b and 7b, respectively.

Water supply pipes 5a and 5b extending from the water tank 5 are connected to the switching valves 11 and 12, respectively.

The switching valve 11 switches between water supplied to the pump 8 and the liquid A, and the switching valve 12 switches between water and the liquid B. These switching valves 11, 12 are used.
Is performed according to the output from the valve control box 10.

The switching valves 11 and 12 are opened and closed by an air cylinder (not shown), and are driven by compressed air supplied from the compressor 13.

At each of the two outlets of the pump 8, a liquid A supply line 1 consisting of a pressure-resistant hose is directed toward the machine 4.
4 and the B liquid supply pipeline 15 are connected to each other, and only on the A liquid supply pipeline 14 side, a flow meter 16 including an electromagnetic flow meter is provided.
Is installed.

This is because the pump 8 in this embodiment is of the double type as described above, and the discharge operation in each system is the same, so the machine 4 is measured by measuring the flow rate of the A liquid supply pipe line 14. This is because it is possible to grasp the supply amount of the chemical liquid to the.

Liquid A supply line 14 and liquid B supply line 15
Is connected to the rear end of the hollow rod 21 of the machine 4 arranged in the shaft 2 through the swivel connector 22.
The water or the chemical liquid is discharged from the discharge port at the tip through the inside of the hollow rod 21.

Although not shown, this discharge port is formed in the center of the inside of a Horso type cutter 23 described later.

At the tip of the hollow rod 21,
A hole saw type cutter 23 as a punching tool is mounted, and the hollow rod 21 is driven to rotate around an axis by an electric motor 24 so that the hole saw type cutter 23 is moved to the vertical shaft 2
The steel sheet pile installed on the wall surface (vertical wall surface) and the ground are perforated.

As described above, in this apparatus 1, since the hole saw type cutter 23 perforates both the steel sheet pile and the ground, the rotation speed of the hole saw type cutter 23 is changed depending on the hardness of the ground. It is preferable to monitor and adjust accordingly, so that the electric motor 24 is controlled by the machine control panel 25.

That is, the machine control panel 25 controls the power source of the machine 4 and variably controls the rotation speed of the electric motor 24 by an inverter. It has a function.

The control panel 25 for the machine and the control panel 26 connected to the control panel 8a for the pump via a cable are formed as a portable, lightweight, compact body separate from the apparatus main body 3. As is clear from FIG. 1, the operation panel 26 is formed separately from the machine 4 and is arranged in the vertical shaft 2 in the vicinity of the machine 4. Therefore,
Depending on the construction position with
If the hole condition is difficult to see, the operator
Both move to a position where it is easy to see the drilling status, and the accurate drilling shape is obtained.
The operation panel 26 can be operated from the situation as needed.
It

On the operation panel 26, the switching valves 11, 1 are provided.
2, an operation switch 31 for operating the open / closed state, an indicator 32 of the rotation speed of the pump 8 and an adjusting knob 33 of the rotation speed thereof, an indicator 35 of the flow rate measured by the flow meter 16, and the electric motor 24. The rotation speed indicator 36 of the hollow rod 21 and the adjustment knob 37 for adjusting the rotation speed thereof
Etc. are provided (see FIG. 2).

An operation switch 31 for operating the open / close state of the switching valves 11 and 12 outputs the output through the machine control panel 25 and the valve control box 10 to cause the switching valves 11 and 12 to open and close. Is.

The rotational speed indicator 32 of the pump 8 and the rotational speed adjusting knob 33 directly input and output to and from the pump control panel 8a to display the rotational speed of the pump 8 and The operation for adjusting the rotation speed is performed.

The flow rate indicator 35 displays the flow rate signal measured by the flow meter 16 via the machine control panel 25.

Hollow rod 21 by the electric motor 24
The rotation speed indicator 36 is for displaying a signal from a tachometer (not shown) installed in the machine 4 after passing through the machine control panel 25 once. Further, the rotating speed adjusting knob 37 of the hollow rod 21 is operated to change the value of the power supply current as the control target value by the machine control panel 25, thereby rotating the hollow rod 21. The speed is adjusted.

By installing such an operation panel 26 near the machine 4 in the vertical shaft 2, an operator operating the machine 4 directly observes each display of the operation panel 26 while
Operations such as operation of the machine 4 and operation of the switching valves 11 and 12 can be performed.

That is, while directly monitoring the state of perforation and the like by the machine 4 as the target work by the device 1, the operation panel 26 can monitor the situation of the accompanying work or can perform the accompanying work, so that it is appropriate in time. Work is easy to perform, and the possibility of hindering the intended work due to delays in accompanying work is reduced, thus improving workability. The operation panel 26 also displays the rotation speed of the machine 4.
And the control knob 37 for adjusting the rotation speed of the machine 4
Since it is installed so that it was confirmed from a position easy to see
Depending on the drilling situation of the horizontal boring machine such as soil and ground
It is easy to accurately detect changes in
Then, by operating the operation panel 26 immediately,
The rotation speed can be adjusted quickly.

In addition, since the work to be performed on the apparatus main body 3 side is reduced, labor is saved, and in normal work, the operator on the device main body 3 side also performs other tasks. It is also possible to leave it unattended.

[0036]

As described above, according to the invention described in claim 1, the water which must be performed in the chemical liquid injection work by the geological improvement chemical liquid injection device of this type using two systems of water and the chemical liquid. It is possible to switch between the and the chemical solution immediately from the vicinity of the boring machine by the operation panel. That
Therefore, the work of the operator on the device side is reduced and labor is saved.
Be played.

Water used by switching between water and chemical liquid
Mount the operation panel of the flat boring machine
As it is separate from the ring machine, depending on the construction position
What is the position of the horizontal boring machine installed
Instead, the operator should check the drilling situation of the horizontal boring machine.
Operation panel while checking easily in the vicinity or in a position where it is easy to see
Operates the switching valve between water and chemicals at an appropriate timing
can do.

[Brief description of drawings]

FIG. 1 is an overall schematic diagram of a ground improvement chemical solution injector according to an embodiment.

FIG. 2 is a front view of a control panel.

[Explanation of symbols]

 1 Ground improvement chemical liquid injection device 3 Main body 4 Horizontal boring machine 5 Water tank 6 A liquid tank 7 B liquid tank 8 Pumps 11 and 12 switching valve 14 A liquid supply pipe line 15 B liquid supply pipe line 16 Flow meter 21 Hollow Rod 23 Hole saw type cutter (piercing tool) 24 Electric motor 26 Operation panel 35 Indicator 36 Indicator 37 Adjustment knob

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-1-154913 (JP, A) Actually open Sho 51-137804 (JP, U) Actually open Sho 60-151934 (JP, U)

Claims (2)

[Claims] 1. A geological improvement chemical liquid injector having a device main body and a boring machine arranged at a position separated from the device main body, wherein the device main body comprises a water tank, a chemical liquid tank, water and a chemical liquid. And the like, and a switching valve for switching the pipes from the water tank and the chemical liquid tank to the pump. the discharge port is formed, such liquid chemical to the tip pressure from the pump, vertically between the device body and the boring machine in which connected in line, the boring machine generally horizontally hollow rod
A horizontal boring machine for drilling on the wall surface, which is operated separately from the device body and the boring machine.
A work board is provided, and the operation panel has the switching valve
Operation switch and rotation speed display of the boring machine
And a rotation speed regulator for the boring machine
A geological improvement chemical liquid injecting device characterized by being provided . 2. The geological improvement chemical liquid injector according to claim 1 , wherein a discharge flow rate by the pump is provided in the apparatus main body.
A flow meter for measurement is installed and the operation panel
Characterized by providing a display for displaying the measured value of the flow meter
Geological improvement chemical solution injection device.