Material for spraying lower tunnel of supporting well and its preparation method


Application Number: 00122898
Application Date: 2000.09.05
Publication Number: 1281829
Publication Date: 2001.01.31
Priority Information:
International: C04B18/12;C04B28/18;E21D11/04
Applicant(s) Name: Kailuan (Group) Co. Ltd.
Address:
Inventor(s) Name: Zhong Yaping;Yin Zuoru;Li Jianmin
Patent Agency Code: 11012
Patent Agent: zhang wen
Abstract The present invention relates to a spraying support material which can be extensively used for underground tunnel engineering in the fields of coal mine, metallurgical industry, irrigation works and railway tunnel, etc. and its preparation process. It uses the natural ceramicite formed by utilizing fully-spontaneous combustion coal gangue as aggregate, and adds the hydrated lime as additive, and mixes them with cement and quick-setting additive, then uses ejector to implement spraying support of tunnel. Said invented spraying support material is high in strength, low in dust concentration and low in resilience rate, at the same time it is favourable for comprehensive utilization of coal gangue.