CN-120742404-B - All-weather wireless blasting vibration system-based out-of-range mining identification and accurate positioning method

CN120742404BCN 120742404 BCN120742404 BCN 120742404BCN-120742404-B

Abstract

The invention relates to a boundary crossing mining identification and accurate positioning method based on an all-weather wireless blasting vibration system, which is characterized in that a plurality of wireless blasting vibration monitoring devices, namely vibration measuring points, are arranged on the periphery of a mine, vibration signals generated by blasting mining are monitored all-weather, and the time difference of the vibration signals reaching each measuring point is calculated; the method comprises the steps of calculating the average value of wave velocity components of rock mass in a plurality of groups of mining areas by utilizing unidirectional straight line distances between two measuring points, obtaining unidirectional distances between an explosion area and each measuring point, repeatedly operating in three orthogonal directions to obtain the space distance between the explosion area and each measuring point, drawing by taking each measuring point as a sphere center and the space distance as a radius, inverting a three-dimensional space model of the explosion area by analyzing data to obtain intersections, determining whether out-of-range exploitation behaviors exist or not and determining out-of-range exploitation directions according to a construction scheme, and realizing quick positioning and timely stopping of out-of-range exploitation and economic claims. The invention has the remarkable advantages of accuracy, convenience and relatively low cost, and effectively improves the safety supervision efficiency of mineral resources.

Inventors

ZHOU JUNRU
NIE ZIHAN
YU HAOTIAN
GAO SHANG
LENG ZHENDONG
DU BIN

Assignees

武汉科技大学

Dates

Publication Date: 20260508
Application Date: 20250702

Claims (5)

1. The method for identifying and accurately positioning out-of-range exploitation based on the all-weather wireless blasting vibration system is characterized by comprising the following steps of: S1, arranging N earthquake wave vibration monitoring points at different positions of the periphery of a mine according to the positions of a mining area, and installing all-weather wireless blasting vibration triaxial sensors at the measuring points; s2, measuring and calculating unidirectional straight line distances between every two monitoring points in the directions of x, y and z, wherein the unidirectional distances between the measuring point i and the measuring point j in the directions of x, y and z are respectively , , , And is also provided with ; S3, carrying out joint time service on the sensors at all the measuring points, and marking the waveform starting moment of the vibration monitoring equipment as the initial moment And unifies with the detonation time; S4, selecting any three different measuring points i, j and k from the N measuring points as a first group of measuring points, analyzing the vibration time course curve of the seismic wave at each selected measuring point, recording the time when the peak value of the seismic wave at the different measuring points appears for the first time, and correspondingly taking the time as the time required by the seismic wave to propagate to the measuring points i, j and k ; S5, according to the distance between the measuring points in the S2 and the time measured in the step S4 The wave velocity components of a plurality of groups of rock mass are easy to be calculated in a pairwise crossing way among three measuring points, and the average value is obtained by taking the average value of the wave velocity components in the x, y and z directions , And ; S6, obtaining the spatial distance component of the explosion region from the measuring point i in the x, y and z directions according to the average value of the wave velocity components measured in the S5, wherein the formula is that , , Combining the space distances between the explosion region and the measuring points i, j and k in the x, y and z directions to obtain the space distances between the explosion region and the measuring points i, j and k respectively Drawing a three-dimensional sphere by taking the space distance corresponding to the sphere center of the measuring points i, j and k as the radius, wherein the intersection part of the space regions of each sphere is the range of the possible explosion region; S7, re-selecting a group of measuring points different from the first group of measuring points from the N measuring points, repeating the steps S1-S6, calculating the overlapping area of the possible explosion area range corresponding to the two groups of measuring points, judging whether the overlapping area meets the preset condition, if so, locating the accurate explosion area range, turning to the next step, and otherwise, repeating the step S7; S8, comparing the construction scheme, judging whether out-of-range exploitation behaviors exist, and if so, immediately early warning and reporting are needed.
2. The method for identifying and accurately positioning out-of-range mining based on the all-weather wireless blasting vibration system according to claim 1, wherein in the step S3, the blasting vibration monitoring device is a triaxial vibration speed sensor, sampling frequencies are kept consistent, unified time service only needs to ensure that the starting moments of recorded waveforms are consistent, and the propagation time is calculated by the difference value between the starting time of a measuring point and the starting time of the recording.
3. The method for identifying and accurately positioning out-of-range mining based on the all-weather wireless blasting vibration system according to claim 1, wherein in S5, a plurality of rock mass wave velocity components are easy to calculate in a pairwise crossing manner among three measuring points: ; Averaging wave velocity components in the x-direction by the following formula : ; Further calculate the average value of wave velocity components in x, y and z directions , And 。
4. The method for identifying and accurately positioning out-of-range mining based on all-weather wireless blasting vibration system as set forth in claim 1, wherein in S6, the spatial distances of the explosive region relative to the measuring points i, j, k in the x, y, z directions are combined to obtain the spatial distances of the explosive region to the measuring points i, j, k, respectively The formula of (2) is: ; Wherein, the Is the spatial distance between the explosion region and the measuring points i, j and k.
5. The method for identifying and accurately positioning out-of-range mining based on the all-weather wireless blasting vibration system according to claim 1, wherein the step S7 specifically comprises the following steps: S71, recording the measuring points i, j and k as a measuring point group 1, selecting 9 measuring points different from the group 1, and recording the measuring points as a measuring point group 2 and a measuring point group 3..10 respectively; s72, recording the coincidence range of the explosion regions positioned by the group m and the group m+1 as follows Wherein When (1) Positioning to the precise burst region is considered when the following conditions are satisfied And take : ; Taking out the corresponding overlapping part As the accurate burst area range, otherwise go to the next step: and S73, making m=m+1, repeating S72 until a burst region overlapping range meeting the condition is obtained, and repeating S1-S7 after increasing the number of measurement points if m=9 is not meeting the condition.

Description

All-weather wireless blasting vibration system-based out-of-range mining identification and accurate positioning method Technical Field The invention relates to the field of microseismic monitoring, in particular to an all-weather wireless blasting vibration system-based out-of-range mining identification and accurate positioning method. Background Mineral resources are used as the national economy support industry in China, and the demand of the mineral resources is growing increasingly. Because the mining operation of mineral resources is carried out underground, the real-time supervision difficulty is high, and therefore, the phenomenon of enterprise mining errors can exist in the mining operation, and some enterprises can also utilize supervision loopholes to carry out mining and abusing mining on the mineral resources. Such actions not only result in loss of mineral resources, but also violate relevant laws and regulations and are prone to safety accidents. The existing monitoring mode for mining area exploitation is mainly based on two major core technologies of microseismic positioning and 4D time shift imaging: the microseismic location technique is to locate microseismic events by utilizing absolute time of arrival and relative time of arrival of the microseismic events. The mine environment has huge data volume, the traditional manual processing is easy to miss detection or misjudge, the automatic identification technology needs a large amount of data training, the real-time requirement is high, and the calculation resource consumption is high. In addition, the related equipment has higher precision requirement and higher purchasing and maintenance cost, and is not suitable for large-scale application in engineering. The 4D time-lapse seismic (four-dimensional seismic) imaging is to obtain the velocity change of the underground medium in different periods by utilizing the time difference data of the event on the same station to realize the joint inversion of the seismic position and the velocity structure, so as to quantitatively obtain the region range of the out-of-range mining activity. The related equipment of the technology has the advantages of long period for collecting data, complex data processing, relatively high operation requirement and high cost, and is not suitable for wide application in engineering. Therefore, the difficulty of monitoring mining behaviors of large mining areas by using the existing identification technology and method is great. Disclosure of Invention Aiming at the existing problems, the invention provides an accurate, convenient and economic underground mine boundary crossing mining identification and positioning method. The invention adopts the following scheme, and the specific steps of the scheme are as follows: An all-weather wireless blasting vibration system-based out-of-range mining identification and accurate positioning method comprises the following steps: s1, arranging N (N is more than or equal to 5) seismic wave vibration monitoring points at different positions of the periphery of a mine according to the positions of mining areas, and installing all-weather wireless blasting vibration triaxial sensors at the monitoring points; S2, measuring and calculating unidirectional straight line distances between every two monitoring points in the directions of x, y and z, wherein the unidirectional distances between a measuring point i and a measuring point j in the directions of x, y and z are dx ij,dyij,dzij, i, j epsilon (1, 2, 3.., N) and i is not equal to j; S3, carrying out joint time service on the sensors at all the measuring points, and marking the waveform starting moment of the vibration monitoring equipment as an initial moment t 0 and unifying the initial moment with the detonation moment; S4, selecting any three different measuring points i, j and k from the N measuring points as a first group of measuring points, analyzing the vibration time course curve of the seismic waves of each selected monitoring point, recording the first time of occurrence of peak values of the seismic waves at the different measuring points, and correspondingly taking the first time as the time t i、tj、tk required by the seismic waves to propagate to the measuring points i, j and k; S5, according to the distance between the measuring points in the S2 and the time t i、tj、tk measured in the step S4, the wave velocity components of the multiple groups of rock mass are calculated in a pairwise crossing mode between the three measuring points, and the average value of the wave velocity components in the x, y and z directions is obtained by taking the average value And S6, obtaining the spatial distance component of the explosion region from the measuring point i in the x, y and z directions according to the average value of the wave velocity components measured in the S4, wherein the formula is thatCombining the space distances of the explosion region relative to the measurin