JPH04306309A - Geological improving chemical grouting device - Google Patents

Abstract

PURPOSE:To save the energy of work with a geological improving chemical grouting device, and execute good work exactly and easily. CONSTITUTION:In a geological improving chemical grouting device 1 having a device main-body 3, and a boring machine 4 set at a position separated from the device main-body 3, the device main-body 3 has a water tank 5, chemical tanks 6, 7, a pump 8 for pressure-feeding water, chemicals, and the like, and change-over valves 11, 12 for switching conduit lines 6b, 7b to the pump 8 from the water tank 5 and the chemical tanks 6, 7. The boring machine 4 has a hollow rod 21 with a hole-saw type cutter 23 fitted at the tip, and at the tip of the hollow rod 21, the discharge port of chemicals or the like to be pressure- fed from the pump 8 is formed. In connection with the boring machine 4 and the device main-body 3 jointed to each other with conduit lines 14, 15, an operating board 26 for enabling the remote scanning of the change-over valves 11, 12 to be performed is formed separately from the device main-body 3.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention is a geological improvement chemical injection device for injecting a geological improvement chemical in order to strengthen the ground in underground construction work, etc., especially in construction where pipes such as Hume pipes and steel pipes are passed between shafts. It is related to.

0002

[Prior Art] This type of geological improvement chemical injection device has a device body consisting of a chemical tank, a pump, etc. located near the outside of a construction site, such as a shaft, and a boring machine inside the construction site, such as a shaft. The equipment body and the boring machine are connected through a conduit such as a hose to form the entire system.

[0003] Therefore, work using such geological improvement chemical injection equipment is carried out as a joint work by a worker who operates and manages the equipment itself outside the shaft, and a worker who operates and manages the boring machine inside the shaft. It is.

0004

[Problem to be solved by the invention] By the way, even in work using such geological improvement chemical injection equipment, labor saving is required due to circumstances such as a labor shortage, and it is also necessary to ensure that good work is performed. It is.

[0005] This invention was made based on this background, and aims to save labor in the work using a geological improvement chemical injection device and to facilitate reliable work. It is something.

[0006]

[Means for Solving the Problems] In order to achieve this object, the invention according to claim 1 provides a geological improvement chemical injection device having a device main body and a boring machine disposed at a position apart from the device main body. The device main body includes:
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 line from the water tank and the chemical liquid tank to the pump, and the boring machine has a drilling tool at the tip. The switching valve has a hollow rod attached thereto, and a discharge port for the chemical liquid or the like to be pumped from the pump is formed at the tip of the hollow rod, and the boring machine and the device main body are connected by a conduit. The apparatus is characterized in that an operation panel that enables remote control of the apparatus is formed separately from the main body of the apparatus.

[0007]

According to the invention as set forth in claim 1, the switching between water and chemical, which must be performed in operations using this type of geological improvement chemical injection device, can be performed immediately from a position near the boring machine.

[0008] Therefore, the work of the operator on the apparatus main body side is reduced, resulting in labor savings. Furthermore, since the operator on the boring machine side performs the switching operation, the switching operation can be performed while checking the drilling status of the boring machine, and by switching at an appropriate timing, it is possible to perform the work reliably.

[0009]

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

In the figure, 1 is a soil improvement chemical injection device (
2 is a shaft as a construction site.

The device 1 has a device main body 3 and a horizontal boring machine (hereinafter referred to as the machine) 4, as well as hoses, electric cables, and an operation panel that connect the device main body 3 and the machine 4. The whole is composed.

The device main body 3 is entirely mounted on the bed of a truck.

This device main body 3 includes a water tank 5, a tank 6 for liquid A, and a tank 7 for liquid B, which are two-component soil improvement chemicals.
It is equipped with a pump 8 that pumps these water and chemical solutions.

The A liquid tank 6 and the B liquid tank 7, which serve as chemical liquid tanks, are provided with agitators 6a and 7a, respectively, and the agitators 6a and 7a are used to agitate and adjust the liquid appropriately. 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 dual type chemical pump that performs the same discharge operation in two independent systems.The pump 8 is driven by an electric motor, and is driven by the pump. The discharge amount is variably controlled by an inverter by a control panel 8a.

A liquid pipe line 6 is connected from the A liquid tank 6 and the B liquid tank 7 to the pump 8, respectively.
B liquid pipe line 7b is distributed and connected to the 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 these switching valves 11 and 12, respectively.

The switching valve 11 switches between water and liquid A to be supplied to the pump 8, and the switching valve 12 switches between water and liquid B.
The operation is performed according to the output from the valve control box 10.

These switching valves 11 and 12 are driven to open and close by an air cylinder (not shown), and are driven by compressed air supplied from a compressor 13.

[0020] Each of the two discharge ports of the pump 8 has a liquid A supply conduit 1 consisting of a pressure-resistant hose directed toward the machine 4.
4 and the B liquid supply pipe 15 are connected, and only on the A liquid supply pipe 14 side is a flowmeter 16 consisting of an electromagnetic flowmeter.
is installed.

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

The A liquid supply pipe 14 and the B liquid supply pipe 15
is connected to the rear end of the hollow rod 21 of the machine 4 placed in the shaft 2 via a swivel connector 22,
The water or chemical liquid is discharged from the discharge port at the tip of the hollow rod 21 through the interior of the hollow rod 21.

Although this discharge port is not shown, it is formed at the center of the inside of the hole-saw type cutter 23, which will be described later.

[0024] At the tip of the hollow rod 21,
A hole saw type cutter 23 is installed as a drilling tool, and by rotating the hollow rod 21 around its axis with an electric motor 24, the hole saw type cutter 23 is used to drill holes in the steel sheet pile installed on the wall of the shaft 2 and in the ground. It is supposed to be done.

As described above, in this device 1, since the hole saw type cutter 23 is used to perforate both the steel sheet pile and the ground, the rotational speed of the hole saw type cutter 23 is controlled depending on the hardness of the ground. It is preferable to monitor and adjust accordingly, and for this purpose the electric motor 24 is controlled by a machine control board 25.

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

[0027] An operation panel 26 connected to the machine control panel 25 and the pump control panel 8a via a cable is formed as a portable, lightweight and compact body separately from the device main body 3. The operation panel 26 is placed near the machine 4 in the shaft 2.

The operation panel 26 includes the switching valves 11, 1
2, an indicator 32 for the rotational speed of the pump 8 and a knob 33 for adjusting the rotational speed, an indicator 35 for the flow rate measured by the flowmeter 16, and the electric motor 24. Rotation speed indicator 36 of the hollow rod 21 and its rotation speed adjustment knob 37
etc. (see Figure 2).

The operation switch 31 for controlling the opening/closing state of the switching valves 11 and 12 causes the switching valves 11 and 12 to perform opening and closing operations by outputting through the machine control panel 25 and the valve control box 10. It is.

The rotational speed indicator 32 of the pump 8 and its rotational speed adjustment knob 33 perform direct input/output with the pump control panel 8a, display the rotational speed of the pump 8, and display the rotational speed of the pump 8. This is used to adjust the rotational speed.

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

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

By installing such an operation panel 26 near the machine 4 in the shaft 2, the operator who operates the machine 4 can directly monitor each display on the operation panel 26 while
Work such as operating the machine 4 and switching valves 11 and 12 can be performed.

That is, while directly monitoring the state of drilling by the machine 4, which is the target work of this device 1, it is possible to monitor the status of the accompanying work or perform the accompanying work using the operation panel 26, so that it is possible to perform the relevant work in a timely manner. This improves work efficiency because it makes it easier to carry out tasks and reduces the risk of hindrance to the desired task due to delays in related tasks.

Furthermore, since the work to be performed on the device main body 3 side is reduced, labor saving is achieved, and during normal work, the worker on the device main body 3 side can also perform other tasks. , it is also possible to leave it unmanned.

[0036]

[Effects of the Invention] As explained above, according to the invention set forth in claim 1, the switching between water and the chemical, which must be performed in the work using this type of geological improvement chemical injection device, can be performed at a location near the boring machine. You can do it immediately.

[0037] Therefore, the work of the operator on the apparatus main body side is reduced, resulting in labor savings. Furthermore, since the operator on the boring machine side performs the switching operation, the switching operation can be performed while checking the drilling status of the boring machine, and by switching at an appropriate timing, it is possible to perform the work reliably.

[Brief explanation of drawings]

FIG. 1 is an overall schematic diagram of a soil improvement chemical injection device according to an embodiment.

FIG. 2 is a surface view of the operation panel.

[Explanation of symbols]

1 Ground improvement chemical injection device 3　Device body 4. Horizontal boring machine 5 Water tank 6 Tank for liquid A 7　B liquid tank 8 Pump 11, 12 Switching valve 14 A liquid supply pipe 15 B liquid supply pipe 16 Flow meter 21 Hollow rod 23 Hole saw type cutter (drilling tool) 24 Electric motor 26 Operation panel 35 Display 36 Display 37 Adjustment knob

Claims (3)

[Claims] 1. A geological improvement chemical injection device comprising a device main body and a boring machine located at a distance from the device main body, the device main body comprising a water tank, a chemical tank, and a water tank, a chemical tank, and a boring machine that is arranged at a distance from the device main body. The boring machine has a pump that pressure-feeds water, etc., and a switching valve that switches pipelines from the water tank and the chemical tank to the pump,
It has a hollow rod with a piercing tool attached to its tip, and
An operation that enables remote control of the switching valve in a device in which a discharge port for the chemical liquid or the like to be pumped from the pump is formed at the tip of the hollow rod, and the boring machine and the device main body are connected by a pipe line. A chemical injection device for geological improvement, characterized in that a plate is formed separately from the main body of the device. 2. The geological improvement chemical injection device according to claim 1, wherein the operation panel is provided with an indicator for the rotational speed of the boring machine and a rotational speed regulator for the boring machine. Chemical injection device. 3. The geological improvement chemical injection device according to claim 2, wherein a flow meter for measuring the discharge flow rate by the pump is installed in the device body, and the measurement value of the flow meter is displayed on the operation panel. 1. A chemical injection device for geological improvement, characterized by being equipped with an indicator.