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Noise Control Technology for Mine Wet Spraying Trucks
Release time:
2026-04-02
Source:
Author:
Summary:
The noise generated by underground wet-mix shotcrete rigs not only affects the health of operators but can also mask abnormal sounds from other equipment, posing safety risks. Systematic noise-control measures can effectively reduce equipment noise levels and improve the working environment.
I. Noise Source Analysis and Identification
Main Noise Source Localization
Main noise-generating parts of the equipment:
1. Hydraulic system: fluid noise generated by pumps and valve manifolds
2. Powertrain: Engine or electric motor operating noise
3. Mechanical transmission: gear and bearing friction noise, etc.
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, varies with flow velocity
Structural noise: propagates through the equipment structure.
II. Noise Reduction in Hydraulic Systems
Hydraulic Pump Noise Control
Measures to reduce hydraulic pump noise:
Select a low-noise plunger 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 Power System
Engine Noise Control
Noise Reduction Measures for Diesel Engines:
Install a high-efficiency silencer
Install an engine soundproof 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 low-noise motors
2. Install vibration isolation 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 use elastic connections.
Set up a floating installation platform
Treatment of the housing with damping materials
Soundproofing
Sound Propagation Control:
1. Install a local sound enclosure
2. Use sound barriers
3. Install sound-absorbing lining板
4. Seal noise transmission gaps
V. Noise Reduction During Operation
Operation parameter optimization
Reducing noise through operation:
Reasonably control the pumping speed.
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 connections
VI. Personal Protective Measures
Hearing protection equipment
Personal Protective Equipment:
Noise-canceling earplugs: suitable for prolonged wear
Noise-canceling earmuffs: Suitable for high-intensity noise environments.
Electronic Noise-Canceling Headphones: Combining Communication and Protection
Personal Protective Equipment Training
Homework Time Management
Exposure time control:
1. Arrange work shifts reasonably.
2. Set up a noise-free rest area
3. Rotational assignment to high-noise positions
4. Monitoring Individual Noise Exposure
VII. Monitoring and Management
Noise Monitoring System
Environmental Noise Monitoring:
Install a fixed noise monitoring instrument.
Use a portable noise detector
Establish a noise distribution map
Set up over-limit alarm device
Management System Development
Noise Control System:
1. Establish noise control standards
2. Establish a regular inspection system.
3. Improve maintenance and upkeep procedures
4. Implement a continuous improvement mechanism
Conclusion
Noise control for mine wet-spray rigs is a systematic engineering endeavor that requires comprehensive measures across multiple dimensions, including source control, interruption of sound propagation paths, and personal protection. Through scientifically sound and well-organized noise mitigation 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 necessary protective devices, and strengthen employee training to ensure that all noise-reduction measures are fully implemented. At the same time, equipment manufacturers should continuously refine product design to reduce equipment noise at the source, thereby providing mines with more environmentally friendly and safer production equipment.
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Changsha Base:Hunan Zenxon Heavy Industry Technology Co., Ltd.
Address: Jinrong Tongxin International Industrial Park, Changsha High-tech Zone
Loudi Base:Hunan Haoda Heavy Industry Technology Co., Ltd.
Address: Loudi Avenue, Loudi High-tech Industrial Development Zone, Lianyuan City, Loudi City, Hunan Province
Telephone:400-186-0868
E-mail:3804246750@qq.com
E-mail:19967177733@163.com
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