Chinese Academy of Sciences

Other

Institute of Rock and Soil Mechanics, Cas

Jingjing Lu

Hui Zhou

Yang Gao

Dawei Hu

Chuanqing Zhang

Fanjie Yang

Yong Zhu

Yue Jiang

Fan Zhang

Lei Huang

Guoping Zhang

Futong Xu

Jinliang Song

Jianfu Shao

Mingming Hu

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 &#x3c6;; 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.

Combined rock-breaking TBM tunneling method in complex strata for realizing three-way force detection

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. 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.

Rock high-stress high-temperature micro-nano indentation test system

A ring shear and seepage-coupled apparatus and a ring shear and seepage-coupled test system for rock and rock fracture under tension or compression stress are provided, relating to the technical field of mechanical testing devices. As to the ring shear and seepage-coupled apparatus, an axial piston rod is connected with an upper shear box, a torque transferring shaft is connected with a lower shear box, an axial force transducer is provided on the axial piston rod, a torque transducer is provided on the torque transmitting shaft, and a force transferring plate is fixedly connected onto the upper shear box. The force transferring plate is able to transmit a counter force for exerting a torque. Radial and circumferential seepage tests can be achieved by providing a seepage structure. The ring shear and seepage-coupled test system comprises a servo pump and the ring shear and seepage-coupled apparatus as mentioned above.

Ring shear and seepage-coupled apparatus and ring shear and seepage-coupled test system for rock and rock fracture under tension or compression stress

The present invention belongs to the technical field of rock mechanics testing equipment, and discloses a rock hollow cylinder torsional shear apparatus which includes a frame, a lifting device, a bottom seat, a confining pressure barrel, an upper seat, a force transmission shaft, a force transmission shaft holder, a torque application structure and a controller. The present invention provides a torsional shear apparatus capable of avoiding mutual interference between axial force application and torque force application.

Rock hollow cylinder torsional shear apparatus

Growing community of inventors

Hubei, China

Jingjing Lu