METHOD AND SYSTEM FOR REAL-TIME PREDICTION OF JAMMING IN TBM TUNNELING

    公开(公告)号:US20230167739A1

    公开(公告)日:2023-06-01

    申请号:US17779918

    申请日:2021-06-18

    CPC classification number: E21D9/003 G01V1/52 G01V1/50

    Abstract: A method and system for real-time prediction of jamming in TBM tunneling. The method includes: (1) obtaining actually measured TSP physical property parameters by applying a TSP method; (2) analyzing value ranges and change trends of the TSP physical property parameters obtained in real time; (3) establishing a TSP physical property parameter sample database of a TBM tunnel; (4) establishing a mapping relationship between TSP physical property parameters and occurrence or not of jamming; (5) establishing a mapping relationship between time sequence values of tunneling parameters and occurrence or not of jamming; and (6) forecasting a TBM jamming risk in real time, and storing reliable data into the TSP physical property parameter sample database. The method and system can effectively obtain a state of surrounding rocks in time, thereby providing real-time forecasting of TBM tunneling jamming, avoiding occurrence of accidents to some extent, and improving the TBM tunneling efficiency.

    NOVEL TRACING METHOD AND APPARATUS BASED ON ELECTROMAGNETIC FIELD

    公开(公告)号:US20220413177A1

    公开(公告)日:2022-12-29

    申请号:US17618410

    申请日:2020-07-13

    Abstract: A novel tracing apparatus includes an electromagnetic transmitting system, a multi-frequency transmitting antenna, electrodes, and a receiver. The electromagnetic transmitting system is at an upstream point and includes a generator and a transmitter having a capacitor; the transmitting antenna penetrates into a detected aquifer through karst collapse or a drill hole; the electrodes and the receiver are at a downstream point, and include two pairs of electrodes orthogonally distributed and located in a cofferdam formed by downstream water; and the receivers collect electric signals in the electrodes. The apparatus is based on good electrical conductivity of water, and can use electromagnetic signals as a tracer for rapid observation. Compared with traditional tracers, electromagnetic signals propagate fast in water, are stable in property, and free of pollution. This apparatus can be applied to groundwater tracing detection, and problems with the traditional tracers having poor timeliness and being environmentally unfriendly are resolved.

    SYSTEM AND METHOD FOR ROCK MASS STRUCTURE DETECTION AND DANGEROUS ROCK DETECTION

    公开(公告)号:US20220276383A1

    公开(公告)日:2022-09-01

    申请号:US17630336

    申请日:2020-07-13

    Abstract: A system and method for rock mass structure detection and dangerous rock detection including a rock mass structure automated detection device and a server. The rock mass structure automated detection device includes a three-dimensional laser scanning device and a two-dimensional image acquisition device for respectively acquiring three-dimensional laser point cloud data and a two-dimensional image of a tunnel construction region. The server communicates with the rock mass structure automated detection device and includes a block structure three-dimensional modeling module and a block structure geometric stability analysis module. By considering the influence of the same group of structural faces in a rock mass, the effect of a newly-generated structural face subjected to blasting disturbance, and the finite dimension of a structural face, blocks in shapes of polygonal pyramid and polygonal frustum can be constructed to comply with engineering practices, and the geometric stability of any polygonal pyramid can be rapidly analyzed.

    MULTI-SCALE INSPECTION AND INTELLIGENT DIAGNOSIS SYSTEM AND METHOD FOR TUNNEL STRUCTURAL DEFECTS

    公开(公告)号:US20210396842A1

    公开(公告)日:2021-12-23

    申请号:US17289139

    申请日:2020-09-30

    Abstract: A multi-scale inspection and intelligent diagnosis system and method for tunnel structural defects includes: a traveling section; a supporting section, disposed on the traveling section, and including a rotatable telescopic platform, where two mechanical arms working in parallel are disposed on the rotatable telescopic platform; an inspection section, mounted on the supporting section, and configured to perform multi-scale inspection on surface defects and internal defects in different depth ranges of a same position of a tunnel structure, and transmit inspected defect information to a control section; and the control section, configured to: construct a deep neural network-based defect diagnosis model; construct a data set by using historical surface defect and internal defect information, and train the deep neural network-based defect diagnosis model; and receive multi-scale inspection information in real time, and automatically recognize types, positions, contours, and dielectric attributes of the internal and surface defects.

    VOLUME MEASUREMENT SYSTEM AND METHOD FOR CLOSED WATER-FILLED KARST CAVE

    公开(公告)号:US20210223085A1

    公开(公告)日:2021-07-22

    申请号:US17052821

    申请日:2019-04-11

    Abstract: A volume measurement system and method for a closed water-filled karst cave, including a water collecting device, concentration tester and control system. The control system is connected to the water collecting device by a connecting piece. The water collecting device is a container with a top closed and bottom open. The water collecting device top is a piston. The piston is connected to a propulsion rod, and propulsion rod is controlled by control system to extend or retract, so as to realize the forward or backward movement of the piston. An openable and closeable placement table is hinged to the water collecting device's inner wall. The placement table is connected to piston, the placement table moves upward when piston is raised, and placement table moves downward when piston is lowered. The placement table is configured to accommodate a chemical substance. The concentration tester is configured to detect the solution's concentration

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