CN-121995537-A - Advanced geological prediction method and system combining long distance with short distance and storage device

CN121995537ACN 121995537 ACN121995537 ACN 121995537ACN-121995537-A

Abstract

The invention discloses a long-short distance combined advanced geological prediction method, a system and storage equipment, belongs to the technical field of geological prediction, and can solve the problem that long-distance accurate prediction is difficult in the prior art. The method comprises the steps of S1, constructing a three-dimensional geological model in a first length range from a face in a to-be-constructed area according to geological information exposed out of the constructed area, predicting a first heteroplasmon in the first length range based on the three-dimensional geological model, S2, predicting a second heteroplasmon in the first length range by using an electromagnetic exploration method, correcting the three-dimensional geological model by using the second heteroplasmon, S3, determining a wave velocity parameter in the second length range from the face by using a seismic exploration method, predicting a third heteroplasmon in the second length range based on the wave velocity parameter, and S4, correcting the wave velocity parameter according to the first heteroplasmon, the second heteroplasmon and the third heteroplasmon, and carrying out geological prediction according to the corrected wave velocity parameter and the corrected three-dimensional geological model. The method is used for geological forecast.

Inventors

ZHOU DEQING
TIAN ZHIQI
LIU YANLING
LIU WANLIN
JIA DONGYAN
LIU LEI
BI ZHAO

Assignees

中国电建集团西北勘测设计研究院有限公司

Dates

Publication Date: 20260508
Application Date: 20260206

Claims (10)

1. A long-short-range combined advanced geological prediction method, characterized in that the method comprises the following steps: S1, constructing a three-dimensional geological model in a first length range, which is smaller than a first preset distance, of a face in a region to be constructed according to geological information exposed from a constructed region, and predicting a first heteroplasmon in the first length range based on the three-dimensional geological model; S2, predicting a second heterobody in the first length range by using an electromagnetic exploration method, and correcting the three-dimensional geological model by using the second heterobody; S3, determining a wave velocity parameter in a second length range which is larger than a second preset distance from the tunnel face by using a seismic exploration method, and predicting a third heteroplasmon in the second length range based on the wave velocity parameter, wherein the second preset distance is larger than the first preset distance; s4, correcting the wave speed parameter when the first heterobody, the second heterobody and the third heterobody meet preset conditions, and carrying out advanced geological forecast on the to-be-constructed area according to the corrected wave speed parameter and the corrected three-dimensional geological model; The preset conditions comprise that the predicted geological properties of the first heteroplasmon, the second heteroplasmon and the third heteroplasmon are the same, the spatial distance between any two of the first heteroplasmon, the second heteroplasmon and the third heteroplasmon is smaller than a first distance, and the spatial distance between the second heteroplasmon and the third heteroplasmon is larger than a second distance.
2. The method according to claim 1, wherein modifying the wave speed parameter in S4 comprises: determining a correction coefficient of the wave speed parameter according to the spatial position of the second heteroplasmon and the spatial position of the third heteroplasmon; and correcting the wave speed parameter according to the correction coefficient.
3. The method according to claim 1, wherein the advanced geological forecast of the area to be constructed is performed in S4 according to the corrected wave velocity parameter and the corrected three-dimensional geological model, specifically comprising: Predicting a third heteroplasmon within the second length range again according to the corrected wave speed parameter to obtain an updated third heteroplasmon; And carrying out advanced geological forecast on the to-be-constructed area according to the updated third heteroplasmon, the second heteroplasmon and the corrected three-dimensional geological model.
4. The method of claim 1, wherein S4 further comprises: Determining an actual geological property of the third heteroplasmon by drilling when the spatial distance between the third heteroplasmon and the first heteroplasmon or the second heteroplasmon is greater than a third distance, or the predicted geological property of the third heteroplasmon and the first heteroplasmon or the second heteroplasmon is different; And carrying out advanced geological forecast on the to-be-constructed area according to the actual geological attribute, the second heteroplasmon, the third heteroplasmon and the corrected three-dimensional geological model.
5. The method according to claim 1, wherein predicting a third heteroplast within the second length range based on the wave speed parameter in S3, in particular comprises: determining rock mass structural parameters within the second length range by utilizing a parameter analysis method based on the wave velocity parameters; predicting a third heteroplast within the second length range based on the rock mass structural parameter.
6. The method according to claim 1, wherein the constructing a three-dimensional geological model within a first length range from the face in the area to be constructed according to the geological information exposed in the constructed area in S1 specifically comprises: determining the structural surface characteristics of the tunnel face according to geological information exposed from the constructed area; And constructing a three-dimensional geological model within a first length range from the face in the region to be constructed according to the structural surface characteristics.
7. The method of claim 1, wherein the wave speed parameter comprises a starting wave speed.
8. The method of claim 1, wherein the first predetermined distance is less than or equal to 30m and the second predetermined distance is greater than or equal to 100m.
9. A long-short range combined advanced geological forecast system, the system comprising: The modeling unit is used for constructing a three-dimensional geological model in a first length range, which is smaller than a first preset distance, of the face surface in the region to be constructed according to geological information exposed from the constructed region, and predicting a first heteroplasmon in the first length range based on the three-dimensional geological model; the near-distance prediction unit is used for predicting a second heterobody in the first length range by using an electromagnetic exploration method and correcting the three-dimensional geological model by using the second heterobody; The remote prediction unit is used for determining a wave speed parameter in a second length range which is larger than a second preset distance from the tunnel face by using a seismic exploration method and predicting a third heteroplasmon in the second length range based on the wave speed parameter, wherein the second preset distance is larger than the first preset distance; The advanced forecasting unit is used for correcting the wave speed parameter when the first heterobody, the second heterobody and the third heterobody meet preset conditions, and carrying out advanced geological forecasting on the area to be constructed according to the corrected wave speed parameter and the corrected three-dimensional geological model; The preset condition comprises that the predicted geological properties of the first heteroplastid, the second heteroplastid and the third heteroplastid are the same, the space distance between any two of the first heteroplastid, the second heteroplastid and the third heteroplastid is smaller than the first distance, and the space distance between the second heteroplastid and the third heteroplastid is larger than the second distance.
10. A storage device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the steps of the long and short distance combined advanced geological prediction method according to any one of claims 1 to 8 when the computer program is executed.

Description

Advanced geological prediction method and system combining long distance with short distance and storage device Technical Field The invention relates to a long-short distance combined advanced geological prediction method, a long-short distance combined advanced geological prediction system and storage equipment, and belongs to the technical field of geological prediction. Background The geophysical prospecting method is a commonly used advanced geological forecasting method at present. The geophysical prospecting methods are mainly divided into two types, one is a seismic prospecting method based on a seismic wave principle, and the other is an electromagnetic prospecting method based on an electromagnetic wave principle. The detection distance of the seismic prospecting method is relatively long, the effective detection distance can reach 100 m-150 m, and the method is suitable for long-distance general survey and forecast. The detection distance of the electromagnetic exploration method is relatively short, the effective detection distance is usually within 30m, and the method is suitable for short-distance fine prediction. However, although the seismic prospecting method has an advantage in terms of detection distance, the detection accuracy thereof is directly related to the determination accuracy of the wave velocity parameters such as the initial wave velocity. In actual engineering, wave velocity parameters are usually determined based on empirical values or simple test estimation, and real and dynamic changes of rock mass in a region to be constructed are difficult to accurately reflect, so that deviation is easily generated in positioning of faults, broken bands and other structures by a seismic prospecting method, and false alarm rate of the seismic prospecting method are high. However, although the electromagnetic prospecting method has advantages in detection precision, due to the limited detection range, the requirement of long-distance and large-range advanced geological prediction is difficult to meet. Because of the limitations of both methods, it is difficult to realize advanced geological prediction with long-distance accuracy. Disclosure of Invention The invention provides a long-short-distance combined advanced geological prediction method, a long-short-distance combined advanced geological prediction system and storage equipment, which can solve the problem that the conventional geological prediction method is difficult to realize long-distance accurate advanced geological prediction. In one aspect, the invention provides a long-short distance combined advanced geological prediction method, which comprises the following steps: S1, constructing a three-dimensional geological model in a first length range, which is smaller than a first preset distance, of a face in a region to be constructed according to geological information exposed from a constructed region, and predicting a first heteroplasmon in the first length range based on the three-dimensional geological model; S2, predicting a second heterobody in the first length range by using an electromagnetic exploration method, and correcting the three-dimensional geological model by using the second heterobody; S3, determining a wave velocity parameter in a second length range which is larger than a second preset distance from the tunnel face by using a seismic exploration method, and predicting a third heteroplasmon in the second length range based on the wave velocity parameter, wherein the second preset distance is larger than the first preset distance; s4, correcting the wave speed parameter when the first heterobody, the second heterobody and the third heterobody meet preset conditions, and carrying out advanced geological forecast on the to-be-constructed area according to the corrected wave speed parameter and the corrected three-dimensional geological model; The preset conditions comprise that the predicted geological properties of the first heteroplasmon, the second heteroplasmon and the third heteroplasmon are the same, the spatial distance between any two of the first heteroplasmon, the second heteroplasmon and the third heteroplasmon is smaller than a first distance, and the spatial distance between the second heteroplasmon and the third heteroplasmon is larger than a second distance. Optionally, the modifying the wave speed parameter in S4 specifically includes: determining a correction coefficient of the wave speed parameter according to the spatial position of the second heteroplasmon and the spatial position of the third heteroplasmon; and correcting the wave speed parameter according to the correction coefficient. Optionally, in S4, performing advanced geological prediction on the to-be-constructed area according to the corrected wave velocity parameter and the corrected three-dimensional geological model, which specifically includes: Predicting a third heteroplasmon within the second length range again according to the