Deep mining puts forward higher requirements for the existing similar material simulation methods and monitoring techniques. The idea of superimposed similar material simulation is proposed to study the motion mechanism of high-stand and giant-thickness weak cementation sandstone, and its motion law is observed by the new method of single-binocular close-range photogrammetry, and verified by numerical simulation method. The results show that: first, the measurement accuracy of single close-range photogrammetry reaches the sub-millimeter level, with its medium errors of 0.18 mm and 0.17 mm in left and right camera respectively. Second, during the damage process of the thick weak cementation strata, the secondary equilibrium structure and regenerative equilibrium structure are formed, causing the destruction mode to go through four stages of ‘arch shell-beam-arch shell-step’ type damage. After the ‘arch shell-beam’ type destruction of the thick Zhidan group sandstone, its movement process disappears in the temporal correlation and shows the characteristics of the surface subsiding immediately after mining. Last, the surface subsidence develops with the saltation, and there is a quadratic polynomial function between the surface subsidence coefficient and the width-depth ratio. The above results can be used to guide the safety mining under the giant-thick weak cementation overburden.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Failure Mechanism of Giant-Thick Strata Characterized by Weak Cementation Based on Superimposed Similar Material Simulation


    Additional title:

    KSCE J Civ Eng


    Contributors:

    Published in:

    Publication date :

    2022-08-01


    Size :

    15 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Superimposed Steering System

    Reuter, Mirko / Saal, André | Springer Verlag | 2016


    SUPERIMPOSED STEERING SYSTEM

    European Patent Office | 2015

    Free access

    Novel well cementation truck

    WANG YANFENG / ZOU LIFU / LI ENJIE et al. | European Patent Office | 2020

    Free access

    SUPERIMPOSED INTERIOR PART AND CUSHION MEMBER FOR SUPERIMPOSED INTERIOR PART

    OKADA FUMIHIKO | European Patent Office | 2022

    Free access

    SUPERIMPOSED IMAGE DISPLAY DEVICE, SUPERIMPOSED IMAGE DRAWING METHOD, AND COMPUTER PROGRAM

    KAWAI TAKASHI / TAKEUCHI TOSHINORI / WATANABE KENJI et al. | European Patent Office | 2021

    Free access