Tunnel dynamic blasting device based on geological body intelligent perception, system and method

A design system of a tunnel dynamic blasting device based on geological body intelligent perception, comprising:

• a geological body intelligent perception module, a tunnel intelligent dynamic blasting design and parameter optimization module, a blasting dynamic fracture behavior analysis module, a laser scanning blasting effect quality evaluation module and a borehole layout module;
• wherein the tunnel intelligent dynamic blasting design and parameter optimization module is individually connected to the geological body intelligent perception module, the blasting dynamic fracture behavior analysis module, the laser scanning blasting effect quality evaluation module and the borehole layout module;
• wherein the geological body intelligent perception module is configured to identify a surrounding rock mass;
• wherein the tunnel intelligent dynamic blasting design and parameter optimization module is configured to design tunnel blasting parameters and optimize the tunnel blasting parameters according to an evaluation result of the laser scanning blasting effect quality evaluation module;
• wherein the blasting dynamic fracture behavior analysis module is configured to perform numerical simulation on the tunnel blasting parameters designed by the tunnel intelligent dynamic blasting design and parameter optimization module and a borehole layout generated by the borehole layout module, to preliminarily check rationality of the tunnel blasting parameters and the borehole layout;
• wherein the laser scanning blasting effect quality evaluation module is configured to perform noise reduction and analysis on point cloud data obtained by a three-dimensional laser scanning device in operation to obtain tunnel blasting excavation result, evaluate the tunnel blasting excavation result to obtain the evaluation result, and transmit the evaluation result to the tunnel intelligent dynamic blasting design and parameter optimization module;
• wherein the borehole layout module is configured to automatically generate the borehole layout according to a crack of a tunnel face and the tunnel blasting parameters designed by the tunnel intelligent dynamic blasting design and parameter optimization module, and transmit the borehole layout to a projection device;
• wherein the geological body intelligent perception module, the tunnel intelligent dynamic blasting design and parameter optimization module, the blasting dynamic fracture behavior analysis module, the laser scanning blasting effect quality evaluation module and the borehole layout module are software modules stored in one or more memories and executable by one or more processors coupled to the one or more memories.

A blasting method of a tunnel dynamic blasting device based on geological body intelligent perception, comprising:

• step 1, acquiring position information of a tunnel face and transmitting the position information to a built-in computer (206), by a blasting design instrument body (1);
• step 2, performing three-dimensional laser scanning on the tunnel face to generate a point cloud image of a vicinity of the tunnel face and transmitting information data of the point cloud image to a geological body intelligent perception module in the built-in computer (206), by a three-dimensional laser scanning device (202);
• performing multi-view based three-dimensional reconstruction on the information data of the point cloud data and inputting surrounding rock information after the reconstruction to a tunnel intelligent dynamic blasting design and parameter optimization module in the built-in computer (206), by the geological body intelligent perception module;
• acquiring edge features of the tunnel face, determining an identified region as a region of the tunnel face, identifying a type of a surrounding rock mass and joints and cracks of the surrounding rock mass within the tunnel face to obtain identified information and transmitting the identified information to the tunnel intelligent dynamic blasting design and parameter optimization module in the built-in computer (206), by a digital camera device (203);
• step 3, selecting corresponding blasting design parameter influence values according to the surrounding rock information, substituting the influence values into a blasting design parameter formula to obtain tunnel blasting design parameters and transmitting the tunnel blasting design parameters to a borehole layout module in the built-in computer (206), by the tunnel intelligent dynamic blasting design and parameter optimization module;
• step 4, obtaining a tunnel borehole layout according to the tunnel blasting design parameters and transmitting image information of the tunnel borehole layout to a memory (508) of a borehole locating device (204), by the borehole layout module;
• step 5, performing numerical simulation of a blasting process according to the tunnel blasting design parameters obtained by the tunnel intelligent dynamic blasting design and parameter optimization module and the tunnel borehole layout obtained by the borehole layout module, analyzing fracture behaviors of the surrounding rock mass under an action of blasting during the numerical simulation and ensuring fracture development of rock mass in each step during the numerical simulation is in a reasonable range, by a blasting dynamic fracture behavior analysis module in the built-in computer (206);
• step 6, generating a borehole layout image according to borehole layout information in the memory (508) and projecting borehole positions on the tunnel face for blasting, by an image controller (509) of the borehole locating device (204);
• and
• step 7, after completion of tunnel blasting and slagging, performing three-dimensional laser scanning on the tunnel face after blasting to obtain a three-dimensional point cloud image after blasting and transmitting the three-dimensional point cloud image to a laser scanning blasting effect quality evaluation module in the built-in computer (206), by the three-dimensional laser scanning device (202);
• analyzing the three-dimensional point cloud image to obtain tunnel blasting quality result and transmitting the tunnel blasting quality result to the tunnel intelligent dynamic blasting design and parameter optimization module for parameter optimization, by the laser scanning blasting effect quality evaluation module.