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Noise Control Technology for Mining Wet-Spraying Boom Trucks

Release time:

2026-06-19

Source:

Author:


Summary:

The noise generated by underground wet‑spraying rigs not only affects the health of operators but can also mask abnormal sounds from other equipment, posing safety risks. By implementing systematic noise‑control measures, equipment noise levels can be effectively reduced, thereby improving the working environment.

I. Noise Source Analysis and Identification

Main noise source localization

Main noise-generating components of the equipment:

1. Hydraulic system: fluid noise generated by pumps and valve assemblies

2. Powertrain: Engine or electric motor operating noise

3. Mechanical transmission: mechanical friction noise from gears, bearings, and other components.

4. Jetting system: Noise generated by concrete impacting the rock wall

Noise Characteristic Analysis

Characteristics of different noise sources:

Hydraulic noise: mid-to-high frequency, with pulsed characteristics.

Mechanical noise: low-frequency, continuous and stable

Aerodynamic noise: broadband, varying with flow velocity.

Structure-borne noise: propagates through the equipment’s structure.

II. Noise Reduction in Hydraulic Systems

Hydraulic Pump Noise Control

Measures to reduce hydraulic pump noise:

Select a low-noise piston pump or vane pump.

Install flexible connections to reduce vibration transmission.

Install an accumulator to absorb pressure pulsations.

Optimize the pump’s installation location and foundation.

Noise Reduction in Piping Systems

Hydraulic Pipeline Noise Control:

1. Secure the piping using vibration-damping pipe clamps.

2. Increase the pipe bend radius.

3. Set the pulse attenuator

4. Optimize pipeline layout

III. Noise Reduction in the Powertrain System

Engine Noise Control

Diesel engine noise reduction measures:

Install a high-efficiency silencer.

Install the engine soundproofing enclosure.

Optimize the exhaust system design

Use a hydraulic fan to reduce noise.

Electric Motor Noise Control

Noise Reduction in Electric Drive Systems:

1. Select a low-noise motor.

2. Install vibration-isolating foundation

3. Install an acoustic enclosure.

4. Optimize the cooling fan

IV. Control of Structure-Borne Noise

Vibration isolation device installation

Vibration isolation measures:

Install vibration isolators on the equipment base.

Key components employ elastic connections.

Set up a floating installation platform

Treat the housing with damping materials.

Soundproofing treatment

Sound Propagation Control:

1. Install a local sound enclosure.

2. Use sound barriers.

3. Install sound-absorbing lining panels.

4. Sealed gap for noise transmission

V. Noise Reduction During Operation

Operational Parameter Optimization

Reducing noise through operation:

Reasonably control the pumping rate.

Avoid sudden acceleration and deceleration.

Optimize spray distance and angle

Operate all actuators smoothly.

Maintenance and Noise Reduction

Equipment status maintenance:

1. Regularly inspect component wear.

2. Replace damaged parts promptly.

3. Maintain good lubrication.

4. Tighten loose fasteners.

VI. Personal Protective Measures

Hearing protection equipment

Personal Protective Equipment:

Noise‑reducing earplugs: Suitable for prolonged wear.

Noise‑reducing earmuffs: Suitable for high‑intensity noise environments.

Electronic noise-canceling headphones: Combining communication and protective functions.

Personal Protective Equipment Training

Assignment Time Management

Exposure time control:

1. Arrange work shifts appropriately.

2. Set up a noise-free rest area

3. Rotate high-noise positions

4. Monitoring individual noise exposure levels

VII. Monitoring and Management

Noise Monitoring System

Environmental Noise Monitoring:

Install a fixed noise monitoring device.

Use a portable noise detector.

Establish a noise distribution map

Set up an over-limit alarm device.

Management System Development

Noise Management System:

1. Develop noise control standards

2. Establish a regular inspection system.

3. Improve maintenance and servicing procedures

4. Implement a continuous improvement mechanism.

Conclusion

Noise control for underground wet‑spraying rigs is a systematic undertaking that requires comprehensive measures addressing multiple aspects, including source‑level mitigation, path‑blocking, and personal protection. Through scientifically sound and well‑planned noise‑reduction strategies, the underground working environment can be effectively improved, operators’ hearing health can be safeguarded, and overall workplace safety can be enhanced. It is recommended that mining enterprises establish robust noise‑management systems, equip themselves with appropriate protective gear, and strengthen employee training to ensure the effective implementation of all noise‑control measures. At the same time, equipment manufacturers should continuously refine product designs to reduce equipment noise at the source, providing mines with more environmentally friendly and safer production machinery.