A spatial geometry construction method for three-dimensional model of ultra-deep directional drilling in tunnels

Abstract

The present invention discloses a spatial geometry construction method for a three-dimensional model of ultra-deep directional drilling of a tunnel. By informatizing the actual drilling log and the drilling task book, and combining the spatial trigonometric function calculation method with the BIM three-dimensional model generation technology, a three-dimensional visualization model of the ultra-deep directional drilling of the tunnel is realized, and the ultra-deep directional drilling model is subjected to multi-angle and multi-scale stereoscopic dynamic observation. The method of the present invention has the advantages of digitalization, easy long-term storage, low complexity, and efficient calculation process. It not only reflects the spatial position form of the ultra-deep directional drilling, but also reflects the characteristics of the rock mass in front of the excavation face, and can effectively detect and reveal the characteristics of the rock mass in front of the excavation face and the spatial position of the geological disaster body, and can be combined with geophysical exploration methods to form a comprehensive analysis of the advanced geological forecast of the tunnel.

Description

Technical Field

[0001] The invention relates to the field of computer-aided spatial geometry construction, and in particular to a method for constructing a spatial geometry model of an ultra-deep directional drilling tunnel. Background Art

[0002] Ultra-deep directional drilling technology refers to a method of using artificial control and special drilling technology on the tunnel excavation surface at a certain direction angle and elevation angle to make the borehole ultra-deep drilling according to the trajectory required by the design. In the process of tunnel construction, geological disasters such as sudden water and mud, rock bursts, etc. may be encountered. Once they occur, they will cause huge hidden dangers to the life safety of tunnel construction personnel. Strengthening the research on ultra-deep directional drilling models is of great significance to the prevention and control of tunnel construction disasters. The ultra-deep directional drilling model of the tunnel can effectively detect and reveal the characteristics of the rock mass in front of the excavation face and the spatial location of the geological disaster body. It can be combined with geophysical exploration methods to form a comprehensive analysis of the tunnel advanced geological forecast, provide a geological basis for the treatment measures of tunnel support grouting engineering, and prevent the occurrence of tunnel construction accidents.

[0003] At present, ultra-deep directional drilling of tunnels is presented in the form of charts and graphs such as construction logs of construction personnel, drilling core sampling records, and drilling location plans. It is impossible to complete information storage, cannot give people an intuitive and realistic impression, and cannot directly integrate the three-dimensional information of ultra-deep directional drilling of tunnels, geophysical exploration, tunnel structure, etc., and cannot complete the comprehensive analysis of various forecasting methods for tunnel advanced geological forecasting. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the present invention provides a method for constructing a spatial geometry model of an ultra-deep directional drilling tunnel, which solves the problems that traditional methods cannot realize information storage, cannot directly integrate three-dimensional information of ultra-deep directional drilling, geophysical exploration, tunnel structure, etc., and cannot complete the comprehensive analysis of various prediction methods for tunnel advanced geological prediction.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is: a method for constructing a spatial geometry model of a tunnel ultra-deep directional drilling three-dimensional model, the method comprising the following steps:

[0006] S1: Based on the starting point of tunnel excavation, a relatively independent coordinate system of the tunnel is established at the center of the tunnel entrance rail bottom with the tunnel excavation direction as the positive direction of the X axis, the horizontal right deviation direction perpendicular to the tunnel excavation direction as the positive direction of the Y axis, and the altitude direction as the positive direction of the Z axis;

[0007] S2: Based on the relatively independent coordinate system of the tunnel, the drilling design instructions and drilling logs of the ultra-deep directional drills constructed at different faces are collected, and the layered spatial coordinates of the drilling holes of each ultra-deep directional drill are obtained through spatial trigonometric functions. The layered integrity degree of each layer of each ultra-deep directional drill is classified and assigned to obtain the layered integrity degree file;

[0008] S3: Input the spatial coordinates of the borehole layers and the layered integrity files of each ultra-deep directional drill into the modeling software platform to realize the spatial geometry construction of the ultra-deep directional drilling three-dimensional model of the tunnel.

[0009] The beneficial effect of the above scheme is that the present invention adopts spatial trigonometric functions in combination with the opening position, azimuth, elevation and drilling coring results of ultra-deep directional drilling of tunnels and utilizes BIM technology to generate a three-dimensional model of ultra-deep directional drilling of tunnels. The present invention solves the problems that traditional methods cannot realize information storage, cannot directly realize the integration of three-dimensional information of ultra-deep directional drilling of tunnels, geophysical exploration, tunnel structure, etc., and cannot complete the comprehensive analysis of various prediction means of tunnel advanced geological prediction.

[0010] Furthermore, obtaining the spatial coordinates of the borehole layers of each ultra-deep directional drill in S2 specifically includes the following sub-steps:

[0011] S2-1: Obtain the mileage position of the i-th ultra-deep directional drilling hole by collecting the drilling design instructions Drilling horizontal angle α i , drilling elevation angle β i and the location of the openings on the face;

[0012] S2-2: The mileage position Drilling horizontal angle α i , drilling elevation angle β i The opening positions on the tunnel face are entered into the database, and the spatial coordinates of the i-th ultra-deep directional drilling opening are obtained by conversion based on the established tunnel relative independent coordinate system.

[0013] S2-3: Using the drilling horizontal angle α i Obtain the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i' ;

[0014] S2-4: Using drilling elevation angle β i Obtain the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i' ;

[0015] S2-5: Based on the spatial coordinates of the i-th ultra-deep directional drilling hole The angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i' And the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i' , according to the spatial trigonometric function, the spatial coordinates of the first layered end point of the i-th ultra-deep directional drilling are obtained for

[0016]

[0017] in, is the stratification depth of the first layer of the core of the i-th drill hole;

[0018] S2-6: Based on the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i' And the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i' , according to the spatial trigonometric function, the spatial coordinates of each layer of the borehole of the i-th ultra-deep directional drilling are obtained for

[0019]

[0020] in, is the starting coordinate of the Nth rock layer in the ith ultra-deep directional drilling, is the layer depth of the Nth layer of the core of the ith drill hole;

[0021] The starting point coordinates and the ending point coordinates of the Nth rock layer of the ith ultra-deep directional drilling are calculated in sequence.

[0022] The beneficial effect of the above further scheme is: through the above technical scheme, the mileage position, drilling horizontal azimuth, elevation angle and hole opening position on the face of the i-th ultra-deep directional drill are obtained according to the drilling design instructions, and the spatial coordinates of the i-th ultra-deep directional drill hole are further obtained, and the layered coordinates of each ultra-deep directional drill hole can be obtained according to the spatial trigonometric function.

[0023] Furthermore, in S2-3, the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X-axis is obtained. i' The specific situations include:

[0024] A1: When the drilling horizontal angle α i Located in the first quadrant, the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i' is the drilling horizontal angle α i ;

[0025] A2: When the drilling horizontal angle α i Located in the fourth quadrant, the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i' 360°-α i .

[0026] The beneficial effect of the above further solution is: through the above technical solution, using the drilling horizontal angle α i Determine the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i' Because the ultra-deep directional drilling is used to detect the rock mass ahead, the azimuth angle of the ultra-deep directional drilling is α iIt must be within the range of the first quadrant (0-90°) and the fourth quadrant (270°-360°).

[0027] Furthermore, in S2-4, the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis is obtained. i' The specific situations include:

[0028] B1: When the drilling angle β i is the upward elevation angle, then the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i' is the drilling elevation angle β i ;

[0029] B2: When the drilling angle β i is the downward elevation angle, then the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i' -β i .

[0030] The beneficial effect of the above further solution is: through the above technical solution, using the drilling elevation angle β i Determine the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i' Because the ultra-deep directional drilling is used to detect the rock mass ahead, the elevation angle of the ultra-deep directional drilling must be an upward elevation angle or a downward elevation angle.

[0031] Furthermore, the classification and assignment of the degree of completeness of each layer of each ultra-deep directional drill in S2 includes the following steps:

[0032] S2-7: Obtain the results of layered coring during drilling construction by collecting drilling logs, and respectively extract the depths of different layers of the i-th ultra-deep directional drilling coring and the integrity information of the layered rock mass, wherein the rock mass integrity information includes complete, relatively complete, relatively broken, broken, and extremely broken;

[0033] S2-8: Obtain the corresponding layered rock mass integrity code according to the depth of different layers of the i-th ultra-deep directional drilling coring, and the corresponding layered rock mass integrity code is: 0 corresponds to complete, 1 corresponds to relatively complete, 2 corresponds to relatively broken, 3 corresponds to broken, and 4 corresponds to extremely broken; when the integrity of the obtained rock masses is the same or similar, and there is no special situation of breakthrough during the drilling process, the integrity codes of all layered rock masses are 0.

[0034] The beneficial effect of the above further solution is that through the above technical solution, the parametric cataloging of all drilling layer depths and layer completeness is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a flow chart of a method for constructing the spatial geometry of a three-dimensional model of ultra-deep directional drilling in a tunnel.

[0036] Figure 2 This is a relatively independent coordinate system diagram for the established tunnel. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0038] like Figure 1 As shown, a method for constructing a spatial geometry of a three-dimensional model of an ultra-deep directional drilling tunnel is provided, the method comprising the following steps:

[0039] S1: Based on the starting point of tunnel excavation, a relatively independent coordinate system of the tunnel is established at the center of the tunnel entrance rail bottom with the tunnel excavation direction as the positive direction of the X axis, the horizontal right deviation direction perpendicular to the tunnel excavation direction as the positive direction of the Y axis, and the altitude direction as the positive direction of the Z axis, such as Figure 2 As shown;

[0040] S2: Based on the relatively independent coordinate system of the tunnel, the drilling design instructions and drilling logs of the ultra-deep directional drills constructed at different faces are collected, and the layered spatial coordinates of the drilling holes of each ultra-deep directional drill are obtained through spatial trigonometric functions. The layered integrity degree of each layer of each ultra-deep directional drill is classified and assigned to obtain the layered integrity degree file;

[0041] S3: Input the spatial coordinates of the borehole layers and the layered integrity files of each ultra-deep directional drill into the modeling software platform to realize the spatial geometry construction of the ultra-deep directional drilling three-dimensional model of the tunnel.

[0042] The step S2 of obtaining the spatial coordinates of the borehole layers of each ultra-deep directional drill comprises the following sub-steps:

[0043] S2-1: Obtain the mileage position of the i-th ultra-deep directional drilling hole by collecting the drilling design instructions Drilling horizontal angle α i , drilling elevation angle β i and the location of the openings on the face;

[0044] S2-2: The mileage position Drilling horizontal angle α i , drilling elevation angle β i The opening positions on the tunnel face are entered into the database, and the spatial coordinates of the i-th ultra-deep directional drilling opening are obtained by conversion based on the established tunnel relative independent coordinate system.

[0045] S2-3: Using the drilling horizontal angle α i Obtain the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i' ;

[0046] S2-4: Using drilling elevation angle β iObtain the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i' ;

[0047] S2-5: Based on the spatial coordinates of the i-th ultra-deep directional drilling hole The angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i' And the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i' , according to the spatial trigonometric function, the spatial coordinates of the first layered end point of the i-th ultra-deep directional drilling are obtained for

[0048]

[0049] in, is the stratification depth of the first layer of the core of the i-th drill hole;

[0050] S2-6: Based on the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i' And the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i' , according to the spatial trigonometric function, the spatial coordinates of each layer of the borehole of the i-th ultra-deep directional drilling are obtained for

[0051]

[0052] in, is the starting coordinate of the Nth rock layer in the ith ultra-deep directional drilling, is the layer depth of the Nth layer of the core of the ith drill hole;

[0053] The starting point coordinates and the ending point coordinates of the Nth rock layer of the ith ultra-deep directional drilling are calculated in sequence.

[0054] S2-3 obtains the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i' The specific situations include:

[0055] A1: When the drilling horizontal angle α i Located in the first quadrant, the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i' is the drilling horizontal angle α i ;

[0056] A2: When the drilling horizontal angle α i Located in the fourth quadrant, the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i' 360°-α i .

[0057] S2-4 obtains the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i' The specific situations include:

[0058] B1: When the drilling angle β i is the upward elevation angle, then the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i' is the drilling elevation angle β i ;

[0059] B2: When the drilling angle β i is the downward elevation angle, then the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i' -β i .

[0060] In S2, the classification and assignment of the degree of integrity of each layer of each ultra-deep directional drill includes the following steps:

[0061] S2-7: Obtain the results of layered coring during drilling construction by collecting drilling logs, and respectively extract the depths of different layers of the i-th ultra-deep directional drilling coring and the integrity information of the layered rock mass, wherein the rock mass integrity information includes complete, relatively complete, relatively broken, broken, and extremely broken;

[0062] S2-8: Obtain the corresponding layered rock mass integrity code according to the depth of different layers of the i-th ultra-deep directional drilling coring. The layer depth of different layers of the i-th drilling coring is The corresponding layered rock mass completion degree is coded as 0, 1, 2, ..., N (0≤N≤5), and the corresponding layered rock mass integrity degree is coded as follows: 0 corresponds to complete, 1 corresponds to relatively complete, 2 corresponds to relatively broken, 3 corresponds to broken, and 4 corresponds to extremely broken; when the integrity of the taken rock masses is the same or similar, and there is no special situation of breakthrough during the drilling process, the integrity degree codes of all layered rock masses are 0.

[0063] In one embodiment of the present invention, the processed ultra-deep directional drilling spatial coordinates and the drilling core layer integrity file are imported into the BIM modeling software platform to realize the three-dimensional reconstruction of the ultra-deep directional drilling construction model. Specifically, the L n Corresponding to the integrity value N of the layer, and organized into an LSDV data file from 0 to i boreholes calculated by S2, the organized ultra-deep directional drilling LSDV data file is then imported into the EVS modeling BIM platform, and the Krig_3d module in the EVS platform is used to realize the three-dimensional reconstruction of 0 to i ultra-deep directional drills.

[0064] The ultra-deep directional drilling spatial three-dimensional model of the present invention can directly express the ultra-deep directional drilling coring results and drilling technology obtained during construction in computer space; the ultra-deep directional drilling spatial three-dimensional model can effectively detect and reveal the rock mass characteristics in front of the excavation face and the spatial position of the geological disaster body; the ultra-deep directional drilling spatial three-dimensional model can be combined with geophysical exploration methods to form a comprehensive analysis of tunnel advanced geological forecasts, provide a geological basis for tunnel support grouting engineering treatment measures, and prevent the occurrence of tunnel construction accidents; most of the staff do not need to enter the tunnel, and can repeatedly use the model to make judgments and decisions, thereby ensuring personnel safety and improving work efficiency.

[0065] Those skilled in the art will appreciate that the embodiments described herein are intended to help readers understand the principles of the present invention, and should be understood that the protection scope of the present invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific variations and combinations that do not deviate from the essence of the present invention based on the technical revelations disclosed by the present invention, and these variations and combinations are still within the protection scope of the invention.

Claims

1. A method for constructing a spatial geometry model of a tunnel ultra-deep directional drilling, characterized in that: The method comprises the following steps: S1: Based on the starting point of tunnel excavation, a relatively independent coordinate system of the tunnel is established at the center of the tunnel entrance rail bottom with the tunnel excavation direction as the positive direction of the X axis, the horizontal right deviation direction perpendicular to the tunnel excavation direction as the positive direction of the Y axis, and the altitude direction as the positive direction of the Z axis; S2: Based on the relatively independent coordinate system of the tunnel, the drilling design instructions and drilling logs of the ultra-deep directional drills constructed at different faces are collected, and the layered spatial coordinates of the drilling holes of each ultra-deep directional drill are obtained through spatial trigonometric functions. The layered integrity degree of each layer of each ultra-deep directional drill is classified and assigned to obtain the layered integrity degree file; The step S2 of obtaining the spatial coordinates of the borehole layers of each ultra-deep directional drill comprises the following sub-steps: S2-1: Obtain the mileage position of the i-th ultra-deep directional drilling hole by collecting the drilling design instructions Drilling horizontal angle α i , drilling elevation angle β i and the location of the openings on the face; S2-2: The mileage position Drilling horizontal angle α i , drilling elevation angle β i The opening positions on the tunnel face are entered into the database, and the spatial coordinates of the i-th ultra-deep directional drilling opening are obtained by conversion based on the established tunnel relative independent coordinate system. S2-3: Using the drilling horizontal angle α i Obtain the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i '; The angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis is obtained in S2-3 i 'Specifically including the following situations: A1: When the drilling horizontal angle α i Located in the first quadrant, the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i ' is the drilling horizontal angle α i ; A2: When the drilling horizontal angle α i Located in the fourth quadrant, the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i ' is 360°-α i ; S2-4: Using drilling elevation angle β i Obtain the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i '; The angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis is obtained in S2-4 i 'Specifically including the following situations: B1: When the drilling angle β i is the upward elevation angle, then the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i ' is the drilling elevation angle β i ; B2: When the drilling angle β i is the downward elevation angle, then the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i ' is -β i ; S2-5: Based on the spatial coordinates of the i-th ultra-deep directional drilling hole The angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i ' and the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i ', according to the spatial trigonometric function, the spatial coordinates of the first layer end point of the i-th ultra-deep directional drilling are obtained for in, is the stratification depth of the first layer of the core of the i-th drill hole; S2-6: Based on the angle α between the projection direction of the ultra-deep directional drill on the horizontal plane and the positive direction of the X axis i ' and the angle β between the projection direction of the ultra-deep directional drill on the vertical plane and the positive direction of the Z axis i ', according to the spatial trigonometric function, the spatial coordinates of each layer of the borehole of the i-th ultra-deep directional drilling are obtained for in, is the starting coordinate of the Nth rock layer in the ith ultra-deep directional drilling, is the layer depth of the Nth layer of the core of the ith drill hole; The starting point coordinates and the ending point coordinates of the Nth rock layer of the ith ultra-deep directional drilling are calculated in sequence; S3: Input the spatial coordinates of the borehole layers and the layer integrity files of each ultra-deep directional drill into the modeling software platform to realize the spatial geometry construction of the tunnel ultra-deep directional drilling three-dimensional model. Specifically, the L n Corresponding to the integrity value N of the layer, and organized into an LSDV data file from 0 to i boreholes calculated by S2, the organized ultra-deep directional drilling LSDV data file is then imported into the EVS modeling BIM platform, and the Krig_3d module in the EVS platform is used to realize the three-dimensional reconstruction of 0 to i ultra-deep directional drills.

2. The method for constructing a spatial geometry model of a tunnel ultra-deep directional drilling according to claim 1, characterized in that: The classification and assignment of the degree of completeness of each layer of each ultra-deep directional drill in S2 includes the following steps: S2-7: Obtain the results of layered coring during drilling construction by collecting drilling logs, and respectively extract the depths of different layers of the i-th ultra-deep directional drilling coring and the integrity information of the layered rock mass, wherein the rock mass integrity information includes complete, relatively complete, relatively broken, broken, and extremely broken; S2-8: Obtain the corresponding layered rock mass integrity code according to the depth of different layers of the i-th ultra-deep directional drilling coring, and the corresponding layered rock mass integrity code is: 0 corresponds to complete, 1 corresponds to relatively complete, 2 corresponds to relatively broken, 3 corresponds to broken, and 4 corresponds to extremely broken; when the integrity of the obtained rock masses is the same or similar, and there is no special situation of breakthrough during the drilling process, the integrity codes of all layered rock masses are 0.

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