COMBINED ROCK-BREAKING TBM TUNNELING METHOD IN COMPLEX STRATA FOR REALIZING THREE-WAY FORCE DETECTION

    公开(公告)号:US20210003009A1

    公开(公告)日:2021-01-07

    申请号:US16919058

    申请日:2020-07-01

    IPC分类号: E21D9/00 E21D9/10

    摘要: Disclosed a combined rock-breaking TBM tunneling method in complex strata for realizing three-way force detection, comprising the steps of preparing a combined mechanical-hydraulic rock-breaking cutter head for TBM construction; starting construction; advancing the combined mechanical-hydraulic rock-breaking cutter head; pushing and pressing against a tunnel face by a mechanical cutter tool; subjecting a three-way force detection cutter to squeezing forces; feeding back three-way force data by a three-way force sensor; processing information by a TBM back-end control processor; obtaining a value of rock-cutter contact angle φ; feeding back parameter information to a TBM cutter head control center by a lithology index center; responding by the TBM cutter head control center, obtaining and adjusting parameters by the mechanical cutter tool equipped with the three-way force sensor; and breaking rock by the combined mechanical-hydraulic rock-breaking cutter head. The method disclosed is energy-saving and efficient, and has high rock-breaking efficiency.

    ROCK HIGH-STRESS HIGH-TEMPERATURE MICRO-NANO INDENTATION TEST SYSTEM

    公开(公告)号:US20210123844A1

    公开(公告)日:2021-04-29

    申请号:US17070946

    申请日:2020-10-15

    IPC分类号: G01N3/42

    摘要: The present disclosure discloses a rock high-stress high-temperature micro-nano indentation test system, comprising: an X, Y, Z three-direction macroscopic adjustment module, an indentation precision loading module, an indentation test module and an indentation data processing module. The rock high-stress high-temperature micro-nano indentation test system further comprise a two-dimensional horizontal stress loading device, a temperature control device and a vacuum device 13. The rock high-stress high-temperature micro-nano indentation test system provided by the present disclosure has distinctive features of modularity and structuralization, and its test results have high accuracy. The rock high-stress high-temperature micro-nano indentation test system is easy to operate, and provides a theoretical and technical system support for testing the mechanical characteristics of the rock under the high-stress and high-temperature environment in the deep region.