| As a new type of special geosynthetics, geocell has been widely used in civil engineering in recent years. The mechanism of geocell reinforcement system mainly includes that geocell confining system makes the reinforced soil shows an apparent cohesion due to its membranes effect and hoop stress, and stress diffusion of geocell reinforcement system which make the bearing capacity of reinforced soil improve considerably.In context of a coalmine roadway underground engineering, this dissertation focuses on mechanical behaviour of geocell reinforcing lime-fly ash stabilized muddy mixture due to argillization of mudstone, so as to reinforce the muddy roadway floor and form an unpaved underground haul road. By means of mixture design experiments in laboratory, uniaxial tensile tests, full-scale plate load test, theoretical analysis and numerical simulation, the research includes:(1) It is discovered the argillization mechanism of mudstone after the mineral components and microstructure of mudstone were investigated by using fluorescent X-ray spectrometry and Scanning Electron Microscopy (SEM). And, based on different mixture design laboratory tests on lime, fly ash and dried muddy swelled mudstone, the optimal mixture design of lime, fly ash and dried muddy swelled mudstone 10:20:70 in mass percent was obtained by a series of compaction tests. And the effect of water content on unconfined compressive strength (UCS) lime fly ash stabilized muddy mixture could be observed. The increase of UCS with curing time at optimal mixture design and the microstructure change of stabilized mixture were investigated in details. Additionally, the physical and mechanical parameters of the stabilized muddy mixture and its characteristics were gotten by compression test, triaxial tests and et al..(2) Strip tensile test method is used to analysis the tension stress-strain behaviour of High Density Polyethylene (HDPE). It was shown that the stress-strain response of...
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