+86 13315975815
Coal Mine Subsurface Communication Cables
Short Description:
This type of cable is designed for the complex operating conditions of coal mines, including high gas concentration, high humidity, strong electromagnetic interference, and mechanical impact. The core features safety characteristics such as flame-retardant and explosion-proof properties, electromagnetic interference resistance, mechanical damage resistance, acid-alkali corrosion resistance, and low smoke and low toxicity. It is suitable for various underground scenarios, including tunnels, pipel
Product Introduction
Selection Guidelines
Classification standard
Installation and Maintenance Precautions
This type of cable is designed for the complex operating conditions of coal mines, including high gas concentration, high humidity, strong electromagnetic interference, and mechanical impact. The core features safety characteristics such as flame-retardant and explosion-proof properties, electromagnetic interference resistance, mechanical damage resistance, acid-alkali corrosion resistance, and low smoke and low toxicity. It is suitable for various underground scenarios, including tunnels, pipel
1: Three Core Principles for Model Selection
| Model Selection Principle | Core Requirements |
|---|---|
| Compliance First | All model selection must comply with the mandatory national standards related to explosion-proof, flame retardant and safety requirements for underground coal mines. Priority shall be given to compliant products that have passed MA certification and have complete test reports, and non-standard and non-certified products are strictly prohibited. |
| Scenario Matching | The selected cable must fully adapt to the environmental risks, laying methods and operating status of the underground application scenario. For high-risk scenarios, the corresponding high protection level model must be selected, and low-specification models are strictly prohibited from being used beyond their applicable scenarios. |
| Performance Adaptation | The electrical performance, transmission performance and mechanical performance of the selected cable must fully meet the actual application requirements, with a reasonable redundancy reserved. Operation beyond the rated parameters is prohibited, while the economy and convenience of operation and maintenance shall be taken into account. |
2：Matching Table of Core Application Scenarios and Recommended Models
| Core Application Scenarios | Recommended Model | Core Selection Basis |
|---|---|---|
| Fixed laying in general underground roadways and chambers without strong mechanical external force and strong electromagnetic interference, for general voice/monitoring signal transmission | MHYV | General-purpose basic model with low cost and convenient laying. It is the most widely used general model in underground mines and fully meets the requirements of conventional scenarios. |
| Scenarios near power cables, frequency conversion equipment and electromechanical chambers with strong electromagnetic interference, for high-precision control/monitoring signal transmission | MHYVP | Adds a copper mesh/aluminum foil shielding layer on the basis of MHYV, with excellent anti-electromagnetic interference capability. It can avoid signal distortion and bit errors, and ensure the stability of control signals. |
| Direct burial/pipe laying scenarios on roadway floors, inside pipelines and through walls, with mechanical pressure and medium external impact | MHYAV | Double steel tape armoured structure with excellent compression and impact resistance, which can withstand medium mechanical external force. Its protection level is much higher than that of non-armoured models. |
| Harsh scenarios in shafts, high-slope roadways and high-drop vertical laying, with large axial tensile force and frequent bending | MHYA32 | Fine steel wire armoured structure with the highest level of tensile, bending and fracture resistance. It can withstand large axial tensile force and is suitable for high-drop and vertical laying scenarios. |
| Core control areas with high gas and high fire risk, such as coal mining faces, heading faces and gas drainage chambers | MHYBV | High flame retardant, low smoke zero halogen (LSZH) formula, which meets the highest flame retardant grade requirements for underground coal mines. It emits low smoke and no toxic gas in case of fire, and is a mandatory model for high-risk underground scenarios. |
| Dynamic scenarios along mobile equipment and hydraulic supports on coal mining faces and heading faces, which require frequent movement and repeated folding | MHYVR | Multi-strand ultra-fine flexible conductor structure with excellent flexibility and strong fatigue fracture resistance. It can be bent repeatedly and adapts to the use requirements of frequent displacement. |
| Harsh environmental areas with high temperature, oil pollution, acid and alkali corrosion, such as electromechanical chambers, water pump houses, sewage treatment stations and underground boiler rooms | MHYJV | Adopts cross-linked polyethylene (XLPE) insulation material with a high temperature resistance grade (long-term operating temperature up to 90℃). It has excellent aging resistance, acid, alkali and oil corrosion resistance, and is suitable for long-term use in complex corrosive environments. |
Basic Model
| Model | Full Product Name | Core Structural Features | Core Underground Application Scenarios |
|---|---|---|---|
| MHYV | Polyethylene (PE) Insulated and PVC Sheathed Communication Cable for Underground Coal Mine | General-purpose structure, non-armoured, number of pairs ranges from 2 to 100, wire diameter 0.5-0.8mm, low cost and convenient for laying | General areas in underground coal mines without strong mechanical external force and strong electromagnetic interference, such as fixed laying in roadways and chambers, for transmitting voice, conventional monitoring and data signals. It is the most widely used basic model in underground mines. |
| MHYVP | Polyethylene (PE) Insulated and PVC Sheathed Shielded Communication Cable for Underground Coal Mine | Adds copper mesh/aluminum foil shielding layer on the basis of MHYV, with excellent anti-electromagnetic interference capability and high signal transmission stability | Areas in underground coal mines with certain electromagnetic interference, such as scenarios near power cables, frequency conversion equipment and electromechanical chambers, for transmitting automatic control and high-precision monitoring signals to avoid signal distortion. |
| MHYAV | Polyethylene (PE) Insulated and PVC Sheathed Steel Tape Armoured Communication Cable for Underground Coal Mine | Double steel tape armoured structure, excellent mechanical impact and compression resistance, can withstand medium mechanical external force, with high protection level | Areas in underground coal mines with mechanical external force risks that require direct burial/pipe laying, such as scenarios on roadway floors, inside pipelines, and through walls. It can withstand certain mechanical pressure, but cannot withstand large axial tensile force. |
| MHYA32 | Polyethylene (PE) Insulated and PVC Sheathed Fine Steel Wire Armoured Communication Cable for Underground Coal Mine | Single-strand/multi-strand fine steel wire armoured structure, its tensile, impact and bending resistance are far superior to steel tape armoured cables, with the highest level of mechanical protection | Harsh scenarios in underground coal mines with high drop, vertical laying and large mechanical tensile force, such as shafts, high-slope roadways, and along frequently moving equipment. It can withstand large axial tensile force and is not easy to break. |
| MHYBV | Polyethylene (PE) Insulated and Low Smoke Zero Halogen (LSZH) Flame Retardant PVC Sheathed Communication Cable for Underground Coal Mine | High flame retardant, low smoke and low toxicity formula, meets the highest flame retardant grade requirements for underground coal mines, with extremely low smoke emission and no toxic gas release in case of fire | Core control areas in underground coal mines with high gas and high fire risk, such as coal mining faces, heading faces, gas drainage chambers, and main ventilation machine rooms. It is a mandatory model for high-risk underground scenarios. |
| MHYVR | Polyethylene (PE) Insulated and PVC Sheathed Flexible Communication Cable for Underground Coal Mine | Multi-strand ultra-fine flexible conductor structure, excellent flexibility, can be bent and folded repeatedly, with strong fatigue fracture resistance | Dynamic scenarios in underground coal mines that require frequent movement and repeated bending, such as signal transmission for mobile equipment and hydraulic supports on coal mining faces and heading faces, adapting to the use requirements of frequent displacement. |
| MHYJV | Cross-linked Polyethylene (XLPE) Insulated and PVC Sheathed Communication Cable for Underground Coal Mine | Adopts cross-linked polyethylene (XLPE) insulation material, with higher temperature resistance grade (long-term operating temperature up to 90℃), excellent aging resistance, acid, alkali and oil corrosion resistance | Harsh environmental areas in underground coal mines with high temperature, oil pollution, acid and alkali corrosion, such as electromechanical chambers, water pump houses, sewage treatment stations, and underground boiler rooms, suitable for long-term use in complex corrosive environments. |