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Delineation method of rock boundary based on rock drilling impact sound recognition

A technology of impact sound and interface, which is applied in the field of delineation of rock layer interface based on rock drilling impact sound recognition, can solve the problems of inaccurate judgment of lithology interface, high labor intensity of geological engineers, poor timeliness of production prospecting technology, etc., to achieve The effect of reducing the amount of prospecting work and cost of prospecting, increasing the degree of prospecting network, and improving the efficiency of delineation

Active Publication Date: 2020-09-11
CHINA MINMETALS CHANGSHA MINING RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a rock layer interface delineation method based on rock drilling percussion sound recognition to solve the problem of poor timeliness of existing production prospecting technology and high labor intensity of geological engineers; deep hole prospecting repeatedly lifts drills or takes rock cores, and the cost of prospecting is high. High labor intensity and low work efficiency; the technical problem that the soft rock cannot be accurately judged by the lithology interface after being washed by water

Method used

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  • Delineation method of rock boundary based on rock drilling impact sound recognition
  • Delineation method of rock boundary based on rock drilling impact sound recognition
  • Delineation method of rock boundary based on rock drilling impact sound recognition

Examples

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Effect test

Embodiment 1

[0048] The Method of Contrasting Shock Acoustic Standards and Identifying Breakpoints of Breakthroughs

[0049] 1. According to the mastered geological data, draw and complete the mining engineering design of the stope, and complete the construction of the mining engineering.

[0050] 2. According to the orebody conditions revealed by the mining quasi-engineering project, a secondary delineation map with a scale of 1:200 shall be compiled by the geological engineer.

[0051] 3. The mining engineer draws the mining blasting design according to the secondary delineation diagram, draws the blasthole arrangement map, arranges the blasthole layout map, and determines the point coordinate O of the support point, the azimuth angle φ of the blasthole and the inclination angle θ of the blasthole . Such as figure 2 , Figure 4 shown.

[0052] 4. Within 30m from the rock drilling position, drill the collector installation hole with a diameter of φ50mm and a hole depth of 1.0m. Insta...

Embodiment 2

[0071] Self-comparison method for identifying sudden change point of strata interface

[0072] 1. According to the mastered geological data, draw and complete the mining engineering design of the stope, and complete the construction of the mining engineering.

[0073] 2. According to the orebody conditions revealed by the mining quasi-engineering project, a secondary delineation map with a scale of 1:200 shall be compiled by the geological engineer.

[0074] 3. The mining engineer draws the mining blasting design according to the secondary delineation diagram, draws the blasthole arrangement map, arranges the blasthole layout map, and determines the point coordinate O of the support point, the azimuth angle φ of the blasthole and the inclination angle θ of the blasthole . Such as figure 2 , 4 shown.

[0075] 4. Within 30m from the rock drilling position, use shallow holes to drill φ50mm holes, install the impact sound acquisition sensor in the hole to improve the accuracy...

Embodiment 3

[0091] Cluster analysis to obtain lithological mutation boundary point method

[0092] 1. According to the mastered geological data, draw and complete the mining engineering design of the stope, and complete the construction of the mining engineering.

[0093] 2. According to the orebody conditions revealed by the mining quasi-engineering project, a secondary delineation map with a scale of 1:200 shall be compiled by the geological engineer.

[0094] 3. The mining engineer draws the mining blasting design according to the secondary delineation diagram, draws the blasthole arrangement map, arranges the blasthole layout map, and determines the point coordinate O of the support point, the azimuth angle φ of the blasthole and the inclination angle θ of the blasthole . Such as figure 2 , Figure 4 shown.

[0095]4. Within 30m from the rock drilling position, use shallow holes to drill φ50mm holes, install the impact sound acquisition sensor in the hole to improve the accuracy ...

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Abstract

The invention discloses a rock stratum interface determining method based on rock-drilling impact sound recognition. The method comprises: step a, designing a drilling hole; step b, a drilling machineis installed a designed position, a supporting machine point coordinate of the drilling machine is measured, and the supporting machine point of the drilling machine is used as an original point of the coordinate system for calculation of lithology sudden-change boundary point coordinate calculation; step c, rock drilling is carried out successively based on an azimuth and inclination angle of the drilling hole design, a drilling hole track line length between the supporting machine point and the hole bottom of a drilling rod and a rock-drilling impact sound are collected synchronously duringthe rock-drilling process, rock-drilling impact sound processing is carried out, and a lithology sudden-change boundary point is determined; step d, a lithology sudden-change boundary point coordinate is calculated; step e, the steps b, c, and d are repeated to complete rock drilling work of all drilling holes, and a lithology sudden-change boundary point coordinate point cloud is obtained; and step f, a rock stratum interface is established by using the lithology sudden-change boundary point coordinate point cloud. Therefore, the rock stratum interface can be determined intelligently in realtime; and the management of development and utilization of mineral resources and low-depletion mining are carried out conveniently.

Description

technical field [0001] The invention relates to the technical field of geological prospecting, in particular to a method for delineating rock formation interfaces based on rock drilling impact sound recognition. Background technique [0002] Affected by the geological structure, the scale, shape and occurrence of the ore body are relatively complex. Although the prospecting in the early stage meets the needs of the mining standard design, due to the limitation of the prospecting network in the mining stage, the upward extension of the ore body, Drooping, branching, turning points, mineralization continuity, morphological complexity, upper and lower wall boundaries, and rock intercalation changes between drilling segments cannot be accurately controlled. Therefore, in mining, ore loss and rock mixing will still be caused within a certain range, resulting in ore loss and dilution, and the blindness of the ore body boundary is an important factor leading to an extremely high in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/30
CPCG01V1/306G01V2210/62
Inventor 赖伟
Owner CHINA MINMETALS CHANGSHA MINING RES INST