JPS5883797A - Mud type shielding excavation construction method and its device - 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 The present invention relates to a slurry-type shield construction method and its device (so, more specifically, it involves pumping a high-concentration slurry made on the ground to a seal r face, In addition to excavating the shield while controlling the inflow of groundwater with slurry, the excavated soil also enables fluid transport using a pump, and at the same time, the excavated soil is reused as slurry, and the entire process is carried out under automatic control and centralized management. It is related to the device.

To explain the method and apparatus of the present invention with reference to the drawings as an example, the shield 9 machine 1 has a cutter 2 on the front, a drive device 3 for this cutter, a cutter torque detection device 5, and a propulsion jack 4 for the seal r machine 1. A screw conveyor 6 for transporting excavated earth and sand from the center of the seal machine R and a transport conveyor 7 are connected to each other, and the rear end reaches an input path to a crusher 8. Next, the excavated soil crushed within a certain particle size in this crusher 8 is fed into a pressure-feeding bonding chamber 9 using an arbitrary conveying device, and a conveying pipe 10 is guided from the pressurized pumping chamber 9 to the outside of the mine. , a flow meter 11 and pipe pressure detectors 10a and 1Ob are provided at appropriate locations in the middle. The end of the conveying pipe 10 is communicated with a vibrating sieve 13 attached to the upper part of a mud storage tank 12 installed outside the mine, and the vibrating sieve 13 separates the excavated soil to be used as surplus soil and the excavated soil to be reused as injection material. It is separated into soil and sand, and the injection material is poured into the mud storage tank 1.
2 into the slurry, and from this slurry storage tank 12, the
The injection pipe 17 is extended into the mine via. The injection pipe 17 branches into two directions from the middle, and one side connects the injection material bonder 18, the injection bonder 19, and the flow rate detector 20 to the pressure-feed bonding chamber 9Vc.

The other side of the injection pipe 17 similarly passes from the injection material bonder 21 to the injection bonder 22 to the flow rate detector 23, and its extended tip is connected to the seal p! ! Cutter 2 which becomes the tip of the face of 1i
A nozzle is opened near the .

In addition to installing a detector 24 for the injection pressure inside the pipe at a suitable location near the tip of the injection pipe 17, there are also other functions such as driving the shield machine l,
Flow rate detection and pressure detection of the conveying pipe 10, driving of the injection pump f22 of the injection pipe 17, detection of flow rate, injection pressure, etc. are controlled remotely while being monitored by each indicator 26 installed on an electrically connected operation panel 25. It is designed so that it can be controlled.

In the drawing, reference numeral 14 is a slurry mixer, and 15 is a waste hopper.

The present invention is equipped as described above, and in excavation propulsion,
After detecting the signals from the cutter slip detection device 5, propulsion gloss 4, bonding injection pressure detector 24, pump rotation speed detector 22, etc., as the numerical value displayed on the indicator 26 on the operation panel 25, set it to the reference value. - Drive. When the propulsion speed of the shield machine 1 increases or the rotational torque of the cutter 2 increases, the rotation speed of the injection bonder 22 is increased, and in the opposite case, the rotation speed of the injection bonder 22 is decreased.
This not only reduces the injection amount of slurry injection material, but also reduces pressure-feeding,
Both tubes of injection 10. ．． The flow rate in the pipe No. 17 is constantly monitored, and operations to maintain an appropriate amount of slurry injected into the face in accordance with the excavation speed of the sealing machine I can be automatically performed by remote control.

In the present invention, the transport of excavated soil from the shaft to the outside of the mine is different from the conventional method, and it is possible to transport the excavated soil in a continuous manner.
As a result of the small occupied area and well-organized transport facilities, it is possible to ensure the safety of each material transport and work, and the automatic control central management system allows seal r construction and excavated soil transportation to be carried out extremely stably at all times. It is remarkable.

[Brief explanation of the drawing]

The drawing is a general side view of the apparatus in a vertical mine in order to illustrate an embodiment of the invention. Explanation of symbols l...Seal)'41 2...Cutter 3...Drive device 4...Propulsion jack 5...Cutter torque detection device 6...Screw conveyor 711...Transport conveyor 8...Crushing machine 9... Pressure feeding bonding chamber lO...
- Conveying pipe 11... Flow meter 12... Sludge storage tank
13... Vibrating sieve machine 14... Slime mixer 1
5. Surplus soil phone/IP16... Pressurized bond 17.
... Injection pipe, 18... Injection material bonder 19... Injection pump 20... Flow rate detector 21... Injection material pump 22... Injection bonder 23... Flow rate detector 24.
...Pressure detector 25...Operation panel 26...Indicator

Claims (1)

[Claims] 1. A slurry-type shield excavation method characterized by automatically injecting slurry into the face of a shield excavation machine and transporting fluid excavated soil to the outside of the mine using a pressure feed pipe. 2. A spout of the slurry feed pipe is provided in the cutter part of the seal r machine located in the mine, and the soil excavated by the shield machine is guided to the pressure bonding chamber through the crusher, and the soil from the slurry feed pipe is introduced into the chamber. A slurry type shield/excavation device characterized by connecting branch pipes and extending a conveying pipe from the pressure bonding chamber to the outside of the mine.