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.

Abstract: The present invention discloses an expansion chassis for a notebook computer, including: a base, wherein the base is provided with a plug-in area, and a first circuit board is disposed inside the base; a plug-in mechanism including a plurality of plug-in interfaces electrically connected to the first circuit board; a clamping mechanism including a fixed clamping arm and a movable clamping arm, the fixed clamping arm is provided with a connecting plug, and the movable clamping arm is provided with a fixed structure; and a second circuit board, wherein the second circuit board is electrically connected to the first circuit board, the connecting plug is electrically connected to the second circuit board, the upper surface of the base is in contact with the bottom surface of the notebook computer, and the upper surface of the base is matched with the bottom surface of the notebook computer to form surface contact.

Abstract: The present invention discloses an expansion chassis for a notebook computer, including: a base, wherein the base is provided with a plug-in area, and a first circuit board is disposed inside the base; a plug-in mechanism including a plurality of plug-in interfaces electrically connected to the first circuit board; a clamping mechanism including a fixed clamping arm and a movable clamping arm, the fixed clamping arm is provided with a connecting plug, and the movable clamping arm is provided with a fixed structure; and a second circuit board, wherein the second circuit board is electrically connected to the first circuit board, the connecting plug is electrically connected to the second circuit board, the upper surface of the base is in contact with the bottom surface of the notebook computer, and the upper surface of the base is matched with the bottom surface of the notebook computer to form surface contact.