1results about How to "Comprehensive observation" patented technology

The utility model relates to a kind of geotechnical centrifugal test tunnel excavation simulation box and simulation device, including box, box is filled with simulation foundation, formation loss simulation mechanism is embedded in simulation foundation;Formation loss simulation mechanism includes outer lining plate is inner lining plate, outer lining plate and inner lining plate are enclosed and are horizontally arranged cylindrical, inner lining plate is arranged in the inside of outer lining plate;Formation loss simulation mechanism includes at least two working sections sequentially connected along length direction;Each working section is provided with softening block and water injection pipe;Softening block is against the inner side wall of outer lining plate;The utility model gradually injects water into each working section along tunnel excavation direction by water injection pipe, so that softening block gradually softens along tunnel excavation direction, when softening block softens, volume reduces, the space between inner lining plate and outer lining plate will reduce accordingly, can effectively simulate formation loss process in tunnel excavation process, the disturbance of simulation process to soil is small, and the success rate of test can be improved.