Iron ore ventilation system

Abstract

The invention provides an iron ore ventilation system. The iron ore ventilation system comprises a control module, a ventilation module, a monitoring module and a ventilation simulation module. The ventilation module, the monitoring module and the ventilation simulation module are all in signal connection with the control module; the ventilation module is composed of a special air inlet shaft, an auxiliary shaft, a fan, a south air return shaft, a north air return shaft and a pipeline. A blasting operation site can be simulated through Vents im three-dimensional ventilation simulation system software, according to ventilation structure setting, the air volume of the blasting operation site is increased, air circulation of the operation site is accelerated, the underground ventilation time is shortened, and the operation circulation time is shortened, so that the effect of improving the production efficiency is achieved; and remote control is adopted, fan frequency conversion and fan control can be adjusted in real time, and air flow control in non-production areas is reduced, so that the fan utilization rate is improved, fine management is truly realized, and the production cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of iron ore ventilation, and in particular to an iron ore ventilation system. Background Art

[0002] The main purpose of iron ore ventilation is to continuously supply a sufficient amount of fresh air to each mining face underground and to discharge the polluted air from the mine to prevent air pollution in the mine and create a safe and comfortable working environment. This helps to protect the lives of underground workers and improve mining efficiency. It also helps to protect the ecological environment of the mine and reduce environmental pollution and waste of resources.

[0003] A Chinese patent with publication number CN117514305A discloses a method, system and equipment for automatically adjusting the air volume in a multi-system linkage mining area of ​​an underground iron ore mine, which relates to the field of automatic air volume adjustment. The method includes: dividing the underground production area into multiple underground production sub-areas according to the ventilation conditions; determining the required air volume of the area corresponding to the underground production sub-area according to the diesel equipment, the number of workers of each type of work and the cross-sectional area in any underground production sub-area; judging whether blasting operations occur in the underground production sub-area to obtain a judgment result; based on the judgment result, determining the optimal air volume of the underground production sub-area according to the required air volume of the area; and controlling and adjusting the number of opening and closing of the wind window according to the current wind speed data and cross-sectional area in the underground production sub-area, so that the underground production sub-area is continuously in the state of optimal air volume distribution. The present invention can intelligently and dynamically adjust the air volume in the underground production sub-area.

[0004] As mentioned above, the patent provides a method, system and equipment for automatic adjustment of air volume in a multi-system linkage mining area of ​​an underground iron ore mine, which can intelligently and dynamically adjust the air volume in the underground production sub-area. However, when it is working, it is unable to evaluate the idleness, and thus is unable to determine the closure form and closure duration. At the same time, wind flow is prone to occur in non-production areas, and part of the wind force of the fan will appear in the non-production area, resulting in a waste of wind power, making the fan utilization rate low, and the overall work adaptability needs to be improved. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an iron ore ventilation system.

[0006] The present invention provides an iron mine ventilation system to solve the problems raised in the background technology.

[0007] In order to solve the above problems, the present invention provides an iron ore ventilation system, which is divided into a plurality of small partitions along the length direction of the ore vein, and a return air shaft is set in the middle section of -500 to -260m in each small partition, so as to form an independent return air system; the ventilation system includes a control module, a ventilation module, a monitoring module and a ventilation simulation module;

[0008] The ventilation module consists of a dedicated air inlet shaft, an auxiliary shaft, a fan, a south return air shaft, and a north return air shaft; wherein the dedicated air inlet shaft and the auxiliary shaft are arranged in the middle of the vein, each middle section of the stone gate lane is equipped with a fan, and the south return air shaft and the north return air shaft are respectively arranged at both ends of the length direction of the vein;

[0009] Among them, the ventilation module, monitoring module and ventilation simulation module are all connected with the control module signal; the control module is used to control the ventilation module, monitoring module and ventilation simulation module to work; the monitoring module is used to monitor the concentration of harmful gases in the mine; the ventilation module is used to realize air circulation inside the mine and take away toxic and harmful gases; the ventilation simulation module is used to simulate the current ventilation status underground.

[0010] Preferably, the monitoring module is composed of a gas monitor, and a gas monitor is provided in each small partition.

[0011] Preferably, the ventilation simulation module is composed of Vents im three-dimensional ventilation simulation system software.

[0012] Preferably: the dedicated air inlet shaft and auxiliary shaft are used to transport dry, purified and conditioned fresh air to the underground space.

[0013] Preferably: the south return air shaft and the north return air shaft are used to discharge the dirty air from underground.

[0014] Preferably, the fan is used to accelerate the air circulation underground, and the pipeline is used to guide the air flow.

[0015] Preferably, the ventilation module is configured as a central diagonal ventilation system with multiple stations.

[0016] Compared with the prior art, the present invention provides an iron ore ventilation system, which has the following beneficial effects:

[0017] The Vents im three-dimensional ventilation simulation system software can be used to simulate the blasting operation site. According to the setting of ventilation structures, the air volume at the blasting operation site can be increased, the air circulation at the operation site can be accelerated, the underground ventilation time can be reduced, and the operation cycle time can be shortened, thereby achieving the effect of improving production efficiency. The zoning ventilation method can be based on the current production situation and use remote control to adjust the fan frequency conversion and fan control in real time, reduce the airflow control in non-production areas, thereby improving the fan utilization rate, truly realizing refined management and reducing production costs.

[0018] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. The specific implementation of the present invention is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 Schematic diagram of the ventilation system of the present invention.

[0021] Among them: 1. Special air inlet shaft; 2. Auxiliary shaft; 3. South return air shaft; 4. North return air shaft; 5. Fan; 6. Gas monitor. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1 The principles and features of the present invention are described, and the examples given are only used to explain the present invention and are not used to limit the scope of the present invention. In the following paragraphs, the present invention is described in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to facilitate and clearly assist in explaining the purpose of the embodiments of the present invention.

[0023] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0025] like Figure 1As shown, in this embodiment, an iron ore ventilation system is divided into a plurality of small partitions along the length direction of the ore vein, and a return air shaft is set in the middle section of -500 to -260m in each small partition, so as to form an independent return air system; for example, the length of the ore vein is 2600m, divided into 11 small partitions, each small partition is 260m long, and a return air shaft is constructed in the middle section of -500 to -260m in each small partition to form an independent return air system; the ventilation mode of the ventilation system is partition ventilation; the ventilation system includes a control module, a ventilation module, a monitoring module and a ventilation simulation module;

[0026] The ventilation module consists of a dedicated air intake shaft 1, an auxiliary shaft 2, a fan 5, a south return air shaft 3, and a north return air shaft 4; wherein the dedicated air intake shaft 1 and the auxiliary shaft 2 are arranged in the middle of the vein, and each middle section of the stone gate lane is equipped with a fan 5, and the south return air shaft 3 and the north return air shaft 4 are respectively arranged at both ends of the length direction of the vein;

[0027] Among them, the ventilation module, the monitoring module and the ventilation simulation module are all connected with the control module signal; the control module is used to control the ventilation module, the monitoring module and the ventilation simulation module to work; the monitoring module is used to monitor the concentration of harmful gases in the mine; the ventilation module is used to realize the air circulation inside the mine and take away the toxic and harmful gases; the ventilation simulation module is used to simulate the current situation of underground ventilation; thereby achieving the functions of improving ventilation, airflow distribution, reducing short circuits, circulating airflow and determining the position of the fan 5;

[0028] Through the above technical solution, since underground blasting will produce a large amount of toxic and harmful gases, which may cause poisoning and suffocation of personnel, mine ventilation, as an underground system facility, can carry away toxic and harmful gases through fresh air flow to achieve air circulation;

[0029] When designing the ventilation system, it mainly includes a control module, a ventilation module, a monitoring module and a ventilation simulation module. The ventilation module, the monitoring module and the ventilation simulation module are all connected with the control module signal, so that the control module can control the ventilation module, the monitoring module and the ventilation simulation module to transmit signals, and operate the ventilation module, the monitoring module and the ventilation simulation module to work. Zoning ventilation reduces the wind flow control in non-production areas, thereby improving the utilization rate of the fan 5, truly realizing refined management and reducing production costs; the monitoring module is used to monitor the concentration of harmful gases in the mine, the ventilation module is used to realize air circulation inside the mine and take away toxic and harmful gases, and the ventilation simulation module is used to simulate the current ventilation status underground. And it can achieve the functions of improving ventilation, airflow distribution, reducing short circuits, circulating airflow and determining the position of fan 5; fresh airflow enters the -380m middle section, -530m middle section and auxiliary shaft 2-440m middle section underground from the dedicated air inlet shaft 1, and enters the production mining area through the lower plate transportation lane and the middle section through the vein. The polluted air produced by the mining area is then directly discharged to the -260m return air middle section through multiple small partitioned return air skylights, and finally discharged to the surface through the south return air shaft 3 and the north return air shaft 4. Here, the partitioned ventilation method can be used according to the current production situation and remote control to adjust the frequency conversion and control of fan 5 in real time, reduce the airflow control in the non-production area, thereby improving the utilization rate of fan 5, truly realizing refined management and reducing production costs;

[0030] The monitoring module is composed of a gas monitor 6, and each small partition is provided with a gas monitor 6. The harmful gases generated during underground blasting mainly include nitrogen dioxide, carbon monoxide, carbon dioxide, hydrogen sulfide and sulfur dioxide. When the gas monitor 6 is in use, the sensitivity and selectivity of the internal sensor to the specific gas are used to convert the concentration of the gas into an electrical signal for display and recording, and the concentration of a variety of harmful gases can be monitored in real time; the ventilation simulation module is composed of the Vents im three-dimensional ventilation simulation system software, and the Vents im three-dimensional ventilation simulation system software is controlled by a computer. When it is used, it is mainly based on the actual ventilation status on site to establish a three-dimensional ventilation simulation system model, so that the ventilation system model is as close as possible to the actual ventilation status underground, and the computer system is used to verify the relevant parameters of the ventilation network. Then, by using the control variable method, classification method, and numerical quantitative method, the three-dimensional simulation system wind flow, wind speed and other related values ​​are studied and analyzed. According to the requirements of the regulations, production needs and the frequency of personnel activities, the wind flow direction and required air volume are determined, and the ventilation structure, ventilation method, and ventilation structure installation location are reasonably selected, and finally a relatively stable ventilation system is formed. In order to be more realistic in Vents The im three-dimensional ventilation simulation system simulates the ventilation status and reduces the simulation data error. The early stage staff should conduct a comprehensive and systematic investigation of the underground, ventilation structures, and mining areas, and measure the ventilation data of key ventilation points, determine the ventilation resistance, and strive to ensure the authenticity of the data.

[0031] Furthermore, the dedicated air inlet shaft 1 and the auxiliary shaft 2 are used to transport dry, purified and conditioned fresh air to the underground space; the south return air shaft 3 and the north return air shaft 4 are used to discharge the polluted air underground; the fan 5 is used to accelerate the air circulation underground, and the pipes are used to guide the air flow; the ventilation module is set as a central diagonal ventilation system with multi-stage station ventilation mode.

[0032] Through the above technical scheme, when working, the dedicated air inlet shaft 1 and the auxiliary shaft 2 are used to transport dry, purified and conditioned fresh air to the underground. In this process, the fan 5 is used to guide the air flow, accelerate the air circulation underground, and bring the transported dry, purified and conditioned fresh air into the underground. The air circulates underground and is finally discharged from the south return air shaft 3 and the north return air shaft 4, and the dirty air in the underground is discharged. The ventilation module is set to a central diagonal ventilation system with multiple stations, which can ventilate from the middle to both ends, further improving the ventilation efficiency.

[0033] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. An iron ore ventilation system, characterized in that: The mine vein is divided into multiple small zones along its length, and a return air shaft is set in the middle section of each small zone from -500 to -260m, thereby forming an independent return air system; the ventilation system includes a control module, a ventilation module, a monitoring module and a ventilation simulation module; The ventilation module comprises a dedicated air inlet shaft (1), an auxiliary shaft (2), a fan (5), a south return air shaft (3), and a north return air shaft (4); wherein the dedicated air inlet shaft (1) and the auxiliary shaft (2) are arranged in the middle of the vein, each middle section of the stone gate lane is equipped with a fan (5), and the south return air shaft (3) and the north return air shaft (4) are respectively arranged at both ends in the length direction of the vein; Among them, the ventilation module, monitoring module and ventilation simulation module are all connected with the control module signal; the control module is used to control the ventilation module, monitoring module and ventilation simulation module to work; the monitoring module is used to monitor the concentration of harmful gases in the mine; the ventilation module is used to realize air circulation inside the mine and take away toxic and harmful gases; the ventilation simulation module is used to simulate the current ventilation status underground.

2. An iron ore ventilation system according to claim 1, characterized in that: The monitoring module is composed of a gas monitor (6), and a gas monitor (6) is provided in each small partition.

3. An iron ore ventilation system according to claim 1, characterized in that: The ventilation simulation module is composed of Ventsim three-dimensional ventilation simulation system software.

4. An iron ore ventilation system according to claim 1, characterized in that: The dedicated air inlet shaft (1) and the auxiliary shaft (2) are used to transport dry, purified and conditioned fresh air to the underground space.

5. An iron ore ventilation system according to claim 4, characterized in that: The south return air shaft (3) and the north return air shaft (4) are used to discharge the dirty air from the well.

6. An iron ore ventilation system according to claim 1, characterized in that: The fan (5) is used to accelerate the air circulation underground, and the pipeline is used to guide the air flow.

7. An iron ore ventilation system according to claim 1, characterized in that: The ventilation module is configured as a central diagonal ventilation system with multiple stations.

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