ventilation system

Ventilation, dust prevention and gas prevention are very important links to ensure safe production in coal mine production. The development of ventilation safety information management system mainly considers the links related to ventilation safety, gas monitoring and prevention, and adopts ventilation system diagram, ventilation network diagram, drainage system diagram, dustproof system diagram and safety monitoring system diagram in spatial data.

(1) ventilation system diagram

The ventilation system diagram is divided into four layers: ventilation system diagram, foundation roadway, map grid and map boundary.

The ventilation system diagram layer mainly collects the spatial information data of permanent air doors, temporary air doors, air doors, air ducts, envelope structures, local fans, main fans, anemometers, fences and other ground objects, and the attribute data of each ground object is mainly about their specifications, models and uses.

The basic roadway layer mainly collects attribute data such as roadway type, supporting material, cross-sectional area, wind speed, air volume, gas concentration, gas emission, carbon dioxide concentration, carbon dioxide emission, temperature and use description.

The spatial data of the map grid is mainly a 500 ×500 square grid, and there is no attribute data, because it is only loaded for the convenience of viewing the coordinates when browsing the data.

The spatial data of the map boundary is the boundary of the mine and the distribution of several other mines around the mine. There is no attribute data, and it is only loaded for easy browsing.

(2) Ventilation network diagram

The ventilation network diagram is abstractly drawn according to the overall ventilation situation of the mine, which intuitively reflects the airflow direction of the mine air supply.

There is only one layer of ventilation network diagram: ventilation network diagram, and the field design of attribute library is the same as that of basic roadway layer.

(3) Drainage system diagram

The drainage system diagram is divided into four layers: drainage system diagram, foundation roadway, map grid and map boundary.

The drainage system map layer mainly collects the spatial data distribution of drainage pipes, drainage pumps, explosion-proof devices, valves and other ground objects. Attribute data include pipe material, pipe diameter, length, cross-sectional area, flow rate, flow rate, etc. Model of drainage pipeline, vacuum degree, maximum pumping capacity, power and manufacturer of drainage pumping station, quantity, material, size and installation date of explosion-proof water bags.

The other three floors are the same as the corresponding floors in the ventilation system diagram.

(4) dustproof system diagram

The dustproof system diagram is divided into four layers: dustproof system diagram, foundation roadway, map grid and map boundary.

The dustproof system layer mainly collects the spatial information of dustproof water curtain, explosion-proof water bag, dustproof spray, three-way valve, dustproof pool, water injection drilling hole and dustproof pipeline. The attribute information mainly includes the specifications and dimensions of each device.

The other three floors are the same as the corresponding floors in the ventilation system diagram.

(5) safety monitoring system diagram

The safety monitoring system diagram is divided into four layers: safety monitoring system diagram, foundation roadway, map grid and map boundary.

The layer of safety monitoring system mainly collects the spatial distribution data of monitoring host, monitoring substation, monitoring line, flow sensor, start-stop sensor, throttle sensor, wind speed sensor, negative pressure sensor, gas sensor and three-way sensor. The attribute data mainly includes the manufacturer, model, measuring range, working voltage, working current, output signal and other related information of each device.

The other three floors are the same as the corresponding floors in the ventilation system diagram.