Abstract: In order to grasp the rapid construction theory and construction technology and operation method of non-construction supporting of horizontal tunnel in loose strata，a thorough analysis on the rapid construction case of the double rows-double layers long distance water diversion culvert in loose formation was made.Based on the friction around jacking pipe，face pressure and the self weight of the pipeline，the jacking force calculation and the new construction process and technology for rapid tunnel construction of metal mines horizontal tunnel in loose formation were acquired.An in-site jacking experiment and various monitoring were carried on and the measured jacking force was contrasted with the three calculated values.The comparison of the relevant technical and economic indicators between the rapid excavation and construction method and the construction supporting method verified the progressiveness，feasibility and applicability of the rapid excavation construction method.

Key words: Loose formation, Rapid excavation, Jacking construction, Jacking force calculation, In-site experiment