JPS626100A - Ventilating device in shaft - 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 (Field of Industrial Application) The present invention relates to a ventilation system in a mine during tunnel excavation work.

(Prior art) Conventionally, this type of ventilation system has an exhaust port of a wind pipe installed inside the mine near the face, and fresh air from the well mouth is sent to the face through the wind pipe to remove generated gas. An air supply type ventilation system that exhausts dust through a tunnel, and an exhaust type ventilation system that has a wind pipe suction port near the face and exhausts generated dust through the wind pipe are used.

(Problems to be solved by the invention) However, as shown in the table above, the former type of air supply type ventilation system has the problem of contaminating the entire tunnel, making the working environment worse along the way, while the latter type of exhaust type ventilation system has the problem of contaminating the entire tunnel, making the working environment worse. , the suction effect of generated gas and dust is limited to a narrow area at the tip of the air duct suction port.
The problem is that the entire exhaust gas, dust, etc. at the face and inside the mine cannot be sucked in evenly, and highly concentrated gas and dust flow toward the face and near the center where workers are concentrated and remain there for a long time. There is a point.

(Means for Solving the Problems) The present invention has been proposed in order to solve these problems, and includes a wind pipe for blowing air equipped with blowers for blowing air disposed at the front and rear parts of the mine. , an exhaust wind pipe equipped with an exhaust blower, an inverter for controlling the air volume of each of the blowers, a gas dust meter installed at each working place in the mine, and a dust concentration detection signal from each gas dust meter. This invention relates to an underground ventilation system characterized by comprising a computer configured to send a signal to an inverter and control the amount of air blown by each of the blowers by each inverter.

(Function) Since the present invention is configured as described above, the gas dust meter installed at each working place in the mine detects the dust concentration at each location in the mine, and sends this detection signal to the computer. , the same computer receives this detection signal, calculates and determines the appropriate air volume for diluting the dust concentration, and sends a signal υ to the air volume control inverters of the air blower and the exhaust air blower, and each inverter causes the The appropriate air volume of each blower is controlled to prevent air contaminated with dust and the like from being sucked into the air pipe by the air blower again.

(Effects of the Invention) As described above, according to the present invention, ventilation inside the mine is performed taking into consideration the balance between air supply and exhaust, and the face and the entire inside of the mine can be ventilated and purified simultaneously in a short time. This can improve the health management of workers by increasing the ventilation rate.

Further, according to the present invention, since the air volume can be controlled according to each work cycle, energy saving can be achieved.

(Example) The present invention will be described below with reference to the illustrated embodiments.

Inside the mine, a blower (1) for blowing air is installed at the rear end, a wind pipe (2) for blowing air whose tip opens near the face, and an exhaust blower (3) at the tip, the rear end of which opens near the tunnel face. An exhaust wind pipe (4) that opens to is arranged to form a front air supply zone (8) and a rear exhaust zone g3). In the figure, (5) is a steel form provided in the center portion 0.

The air volume of the air blower (1) and the exhaust air blower (3) are controlled by inverters (6) and (7), respectively.

A gas dust meter (81 (9)) is installed near the face in the air supply zone, in the exhaust zone ■, and in the center part 0, and each gas dust meter (8) (9) α@ is a receiving section. α
D, computer (L2 was contacted and the same computer α
A command signal is sent to the inverters (6) and (7), and each inverter (6) (force) causes the air blower (1
) and the air volume of the exhaust blower (3) are controlled.

Since the illustrated embodiment is constructed as described above, gas dust meters (8) (9) (it) installed at various locations in the mine are used.
The gas and dust concentrations at various locations in the mine are detected by the
The microcomputer α2 calculates and sets an appropriate air volume for diluting the concentration at various locations in the mine, and a control signal is sent from the microcomputer α2 to the inverters (6) and (7). Furthermore, each inverter (6) (the power is adjusted in response to the control signal to adjust the air volume of the air blower (1) and the exhaust air blower (3) to appropriately dilute the gas and dust concentration in various parts of the mine, This prevents air contaminated with gas, dust, etc. generated in the air supply zone from being sucked into the air blower (1) again.

As described above, according to the above embodiment, the face and the entire mine are simultaneously ventilated and purified in a short time, and the ventilation speed of the face and center area 0 where workers are concentrated is increased, thereby improving the health management of workers. Also inverter (6) + (7)
By controlling the air volume of the air blower (1) and the exhaust air blower (3), the air volume between the air blowing zone (g) and the exhaust zone (c) is maintained at 2.3. .

1. 1, and can also control the air volume according to each work cycle, thereby saving energy.

The present invention has been described above with reference to embodiments, but Ki-ni □
Of course, this is limited only to such embodiments.
□, but without departing from the spirit of the invention.
□ Various design modifications can be made.

[Brief explanation of drawings]

FIG. 1 is a vertical side view showing an underground ventilation system according to the present invention;
FIG. 2 is a control system diagram. ■... Air supply zone, (5)... Exhaust zone, (1)
... Air blower, (2) ... Wind pipe, (3)
...Exhaust blower, (4)...Exhaust wind pipe, (6)
(7)...Inverter, (8) (9) (10.
...Gas dust meter, αri...computer.

Claims (1)

[Claims] A wind pipe for blowing air equipped with a blower installed at the front and rear of the mine, an exhaust wind pipe equipped with an exhaust blower, an inverter for controlling the air volume of each of the blowers, and an inverter installed at each work place in the mine. It is characterized by comprising a gas dust meter, and a computer configured to receive a dust concentration detection signal from each of the gas dust meters, send a signal to each of the inverters, and control the amount of air blown by each of the blowers by each of the inverters. underground ventilation system.