Coal rock identification system and method based on dust sampling

By utilizing a suction mechanism to create a negative pressure state and a pressure difference to drive the particle flow in the coal and rock identification system, the problems of low accuracy and safety hazards in underground coal and rock identification have been solved, enabling real-time, accurate identification and efficient detection of underground coal and rock.

CN122409494APending Publication Date: 2026-07-17CHINA COAL TECH & ENG GRP SHANGHAI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA COAL TECH & ENG GRP SHANGHAI
Filing Date
2026-03-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing coal and rock identification technologies have low accuracy in harsh environments such as high dust, high humidity, and changing lighting underground. They are also susceptible to interference and pose safety hazards. In particular, gas and water mist affect the stability and safety of LIBS detection.

Method used

Design a coal and rock identification system, including a collection and drying chamber, a collection chamber, and a detection chamber. A suction mechanism is used to create a negative pressure state, and the air pressure difference drives the dust to form a stable particle flow. Combined with LIBS detection, the system ensures the safety and accuracy of the detection.

Benefits of technology

It enables real-time and accurate identification of coal and rock underground, reduces the risk of gas explosion, improves the stability and accuracy of detection, and is suitable for rapid detection in high-risk environments.

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Abstract

本发明涉及一种基于粉尘采样的煤岩识别系统及方法,本发明将原本在煤壁原位煤岩识别技术中被视为干扰因素的截割粉尘作为监测对象,利用对粉尘的识别结果反推当下滚筒截割煤壁的煤岩状态。系统设置采集与检测部分,包含三个腔室,利用抽吸机构抽吸采集待测对象并保证腔室的负压真空状态,有效降低检测装置内气体的浓度至远低于脉冲激光引爆含瓦斯气体的条件,从根本上阻断爆炸的发生。系统运行后,采集与检测部分交替运行,三个腔室在上述负压状态下可以保持稳定的压差循环,且在整个检测过程中,压差方向始终有利于粉尘的快速、稳定下落并形成颗粒流,从而提高光谱检测的稳定性、加快整体检测速度,进而实现采煤过程中煤岩的实时、准确识别。
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