Image statistical method of rock lumpiness after explosion
A statistical method and rock technology, applied in the field of geotechnical engineering, can solve problems such as inability to count quickly and accurately, achieve high accuracy, fast speed, and avoid noise interference
Active Publication Date: 2018-07-20
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology
[0008] The purpose of the embodiments of the present invention is to provide a method for counting the distribution of rock fragmentation after blasting, which mainly solves the technical problem that the existing blasting fragmentation image cannot be counted quickly and accurately. The method is easy to operate and easy to operate. Effective use of image processing technology to achieve post-explosion rock lumpiness statistics provides new ideas and methods, and the obtained statistical data has higher accuracy than previous processing technologies
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Embodiment 2
[0053] A method for image statistics of rock blockiness after blasting, the steps of which are:
[0054] (1) On-site photo taking:
[0055] On-site photography requires two meter sticks and a camera. The length of the meter sticks is the same, and the camera must be able to obtain clear on-site photos. In this example, two 2-meter-long meter sticks are selected, and a digital camera with 20 million pixels takes photos and samples, and each layer of rock blocks takes 6 photos.
[0056] (2) Preprocessing of photos:
[0057] Import the photos to the computer, and select the one with better effect for preprocessing. In this example, all the bursts cannot be included in a single photo, and the photos need to be stitched; the stitching is completed after keystone correction; the contrast is increased, the brightness is increased, and noise interference is reduced.
[0058] (3) Obtaining rough edges:
[0059] Use the find edge function in photoshop to outline the rough edge of th...
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The invention discloses an image statistical method of rock lumpiness after explosion. The image statistical method of rock lumpiness after explosion includes the steps: A, using a camera to obtain arock image after explosion on the scene; B, importing the image into a computer, and using image processing software to processing the image; C, processing the image in photoshop, drawing the outlineof the rough edge of rock blocks by using an item of Find Edge; D, attaching the edge line to the original image, using a quick selection function, using the blue color to draw the detailed edge of the rock blocks, converting each block into the white color for expression, and then obtaining an two-dimensional image containing the edge of rocks; and E, importing the image into matlab, by means ofthe image processing technology, counting the size and the quantity of the blocks in the two-dimensional image, converting the size and the quantity of the blocks in the two-dimensional image into three-dimensional volume and quantity, and then completing statistics of rock lumpiness. The image statistical method of rock lumpiness after explosion is easy to practice, is simple to operate, effectively utilizes the image processing technology to realize statistics of rock lumpiness after explosion, and provides a new thinking and method, and the acquired statistic data, compared with the prior art, has higher accuracy.
Description
technical field [0001] The invention belongs to the technical field of geotechnical engineering, and more specifically relates to a statistical method for rock blockiness after blasting. Background technique [0002] The measurement of the degree of rock fragmentation after blasting, that is, the rock lumpiness, is an important way to evaluate the blasting effect. The distribution of rock fragmentation after blasting reflects the rock breaking quality of blasting, and is also the basis for further optimization of blasting parameters. The existing measurement methods of lumpiness are mainly divided into sieving method, bulk counting method and image technology processing method. With the development of image analysis technology, a variety of image processing methods applied to the measurement of rock mass after explosion have appeared. It can be roughly summarized as: WipFrag processing system (WipFrag system), FragScan processing system (FragScan system), Split processing ...
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IPC IPC(8): G06T7/13G06T7/60
CPCG06T7/60G06T2207/20192G06T7/13
Inventor 夏祥武仁杰李海波
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI