en.Wedoany.com Reported - The "Laser Measurement Device for Mine Shaft Cross-Sections," co-developed by the Deep Well Mining Laboratory of China's Shandong Gold Group Co., Ltd. ("Shandong Gold"), recently received a national invention patent granted by the China National Intellectual Property Administration.
Founded in 1996 and headquartered in Jinan, Shandong Province, Shandong Gold Group is one of China's major gold production enterprises, with a full industry chain covering gold exploration, mining, processing, smelting, and sales. Measuring the cross-sectional dimensions of mine shafts is a fundamental task for ensuring shaft construction quality, monitoring surrounding rock stability, and optimizing ventilation and transportation. Traditional manual measurement methods require personnel to operate inside the shaft, resulting in low efficiency and insufficient accuracy. Some existing laser detection devices, due to the relatively fixed positions of their measurement components, are prone to measurement blind spots, making it difficult to meet the demands for efficient, safe, and precise detection in deep mine shafts.
According to the project leader, this patented invention focuses on the need for rapid and accurate measurement of shaft cross-sectional dimensions. It innovatively designs a laser measurement device composed of a support cylinder, clamping assembly, inner double-cone ring plate, laser, and cleaning assembly. The device can be raised and lowered within the shaft using the mine's hoisting structure. An electric motor drives the inner double-cone ring plate to rotate, which in turn drives multiple laser groups to perform rotational measurements, expanding the coverage of cross-section detection and effectively reducing measurement blind spots. Meanwhile, the clamping assembly can be adjusted according to changes in the support diameter, allowing it to adapt to different hoisting structures and perform positioning measurements at specific shaft depths. The transparent cylinder and inclined frame cleaning structure installed on the device can remove adhering dust during the measurement process, reducing the impact of underground dust on the laser signal, thereby further improving the accuracy of measurement data and the operational stability of the device.
The granting of this patent provides a safer, more efficient, and more precise technical means for mine shaft cross-section detection, which is of positive significance for improving the monitoring level of deep shaft construction and ensuring safe mine production.
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