The Pre-Controlling Technology of Spontaneous Combustion in Gutter-Up Gob for Fully Mechanized Top-Coal Caving Face

Abstract:

In China, as popularizing the technology of fully mechanized top-coal mining and increasing the strength and depth of mining, the gutter-up gob can be formed. But the work of fire preventing and extinguishing for its coal spontaneous combustion is more complexity and difficulty. In this paper, based on geology parameters and mining practice for 93up12 fully mechanized top-coal caving face in Nantun coalmine, the form and character of gutter-up gob are analyzed. According to the hidden danger of high temperature for spontaneous combustion in the gob, we adopt the comprehension technologies of fire extinguishing and preventing which include sealing air-leakage, grouting, and injecting compound gel with fly-ash, foam of retarding oxidation, liquid carbon dioxide, and gas of nitrogen. By putting in practice the pre-controlling technology in gutter-up gob and monitoring data of target gases, it obtains a good effect and ensures the safety in production of the fully-mechanized top-coal caving face.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 3688-3695
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.3688
• Online since: January 2013
• Authors: Yang Xiao, Shu Gang Li, Jun Deng, Xu Wang
• Keywords: Fire Extinguishing and Preventing, Fully Mechanized Top-Coal Caving Face, Gutter-up Gob, Pre-Controlling Technology, Spontaneous Combustion

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