Rail transit structure control protection area range determination method in karst environment

Abstract

The invention discloses a method and device for determining the range of a rail transit structure control protection area in a karst environment, computing equipment and a computer storage medium. According to the technical scheme provided by the invention, basic address data and structural parameters of the existing structure are acquired, and the position of the existing structure in a geological section and a corresponding covering layer type are determined; a corresponding position relation model of the existing structure and the external operation relative space is established; according to the structure type, the structure parameters and the corresponding covering layer type of the existing structure, based on the position relation model, a range parameter calculation mode under the critical condition is determined, and a control protection area range under the corresponding critical condition is obtained. According to the method, the external operation influence range, the karst collapse influence range and the existing structure affected range are comprehensively analyzed, the control protection area range under the critical condition influencing the existing structure is accurately determined, corresponding potential threats are scientifically analyzed, and the safety of the urban rail structure is effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of traffic facility structure safety, and in particular to a method for determining the range of a rail transit structure control protection zone in a karst environment, a device computing equipment and a computer storage medium. Background Art

[0002] With the acceleration of urbanization and the continuous growth of population, urban rail transit has been widely used and developed as an important means to alleviate urban traffic congestion and improve travel efficiency. However, in areas with complex karst geological conditions, the operation of rail transit faces many difficulties. The existence of karst phenomena also poses a potential threat to the safety and stability of rail transit facilities. Once karst geological disasters occur, such as stratum collapse and tunnel deformation, they will directly threaten the safety of train operation and even cause major accidents. Therefore, it is very necessary to strengthen the construction management around urban rail structures in karst areas.

[0003] The control and protection zone, also known as the security zone, refers to the control and protection area set up within a specific range of the structure and its surroundings to protect the normal use and safety of the urban rail transit structure. It is the first red line for rail transit operation and management. At present, the provisions of the control and protection zone in my country's industry standard CJJ-J / T 202-2013 "Technical Specifications for Safety Protection of Urban Rail Transit Structures" require that "the control and protection zone is within 50 meters outside the outer edge of the underground station and tunnel structure; the control and protection zone is within 30 meters outside the outer edge of the ground, elevated station and interval structure; the control and protection zone is within 10 meters outside the outer edge of buildings and structures such as entrances and exits, ventilation booths, and substations. When the urban rail transit control zone encounters special engineering geology or special external operations, the scope of the urban rail transit control and protection zone should be appropriately expanded, such as areas with developed karst soil caves, areas with highly permeable sand layers, and under-consolidated areas."

[0004] It can be seen that when special engineering geological conditions exist, the control protection area should be appropriately expanded, but it does not specify how to expand it, to what extent, and the scope of expansion cannot be quantified. The current relevant technical content is mainly aimed at the safety of rail transit during vehicle operation or traffic planning. There is no content on the impact of karst geology on the safety of transportation facilities, and there is no content on the geological impact around existing transportation facilities when facing external operations. There is no response method for this situation, and it is impossible to ensure the safety of existing transportation facilities when facing external operations under special geological environments. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a method for determining the scope of a rail transit structure control protection zone in a karst environment and a corresponding device, computing device and computer storage medium for determining the scope of a rail transit structure control protection zone in a karst environment.

[0006] According to one aspect of the present invention, a method for determining the range of a rail transit structure control protection zone in a karst environment is provided, the method comprising:

[0007] Obtain basic address data and structural parameters of existing structures, determine the location of existing structures in geological sections and the corresponding cover type;

[0008] According to the type of covering layer corresponding to the location of the existing structure, a position relationship model between the existing structure and the external operation relative space is established;

[0009] According to the structural type, structural parameters and corresponding covering layer type of the existing structure, based on the position relationship model, the calculation method of the range parameters under critical conditions is determined, and the range of the control protection zone under the corresponding critical conditions is obtained.

[0010] In the above scheme, the acquisition of basic address data and structural parameters of the existing structure, and determination of the location of the existing structure in the geological section and the corresponding covering layer type further includes:

[0011] Based on the location of the existing structure in the geological section and the basic address data, determine the type of stratum in which the existing structure is located; wherein the stratum type includes at least a karst layer and a cover layer;

[0012] If the existing structure is in the karst layer, then the method for determining the range of the rail transit structure control protection zone in the karst environment is terminated;

[0013] If the existing structure is in an overburden layer, the corresponding overburden layer type is further determined; wherein the overburden layer type includes at least a sand layer and a clay layer.

[0014] In the above scheme, the establishment of a position relationship model between the corresponding existing structure and the external operation relative space according to the type of covering layer corresponding to the location of the existing structure further includes:

[0015] The position relationship model between the existing structure and the external operation relative space includes an hourglass model and a soil hole model;

[0016] When the cover layer type is a sandy soil layer, it corresponds to an hourglass model;

[0017] When the cover layer type is a clay layer, it corresponds to a soil cave model.

[0018] In the above scheme, the structural types of the existing structure include: interval tunnels, and underground stations; wherein the underground stations further include: open-cut and covered-cut stations, and mining stations.

[0019] In the above scheme, the method of calculating the range parameters under critical conditions is determined based on the position relationship model according to the structural type, structural parameters and corresponding covering layer type of the existing structure, and the range of the control protection zone under the corresponding critical conditions is obtained, further comprising:

[0020] When the existing structure is a section tunnel, if the covering layer is a sand layer, the hourglass model is used for calculation. Based on the geometric relationship in the hourglass model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly;

[0021] According to the basic address data and the structural parameters of the existing structure, the diameter D of the interval tunnel, the excavation depth H of the external working foundation pit and the distance H2 from the center of the tunnel to the soil-rock interface are obtained;

[0022] Determine the approach range L of the existing structure based on the diameter D of the interval tunnel

[0023] L = 3D;

[0024] According to the distance H2 from the tunnel center to the soil-rock interface, determine the limit range M of the tunnel affected by karst ground collapse

[0025]

[0026] Where θ is the collapse angle determined according to the hourglass model;

[0027] According to the hourglass model, the geometric relationship between the range parameters under critical conditions is established to obtain the control protection zone range a under critical conditions.

[0028]

[0029] Wherein, N is the impact range of external operation, and N = 1.0H;

[0030] If the cover layer is a clay layer, the soil hole model is used for calculation. Based on the geometric relationship in the soil hole model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly.

[0031] According to the foundation address data and the structural parameters of the existing structure, the soil hole span B is obtained;

[0032] Determine the approach range L of the existing structure based on the diameter D of the interval tunnel

[0033] L = 3D;

[0034] According to the soil tunnel span B, determine the limit range M of the tunnel affected by karst ground collapse

[0035] M = 1.0B;

[0036] According to the soil hole model, the geometric relationship between the range parameters under critical conditions is established to obtain the range of the control protection area under critical conditions.

[0037] a=L+M+N=3D+B+H.

[0038] In the above scheme, the method of calculating the range parameters under critical conditions is determined based on the position relationship model according to the structural type, structural parameters and corresponding covering layer type of the existing structure, and the range of the control protection zone under the corresponding critical conditions is obtained, further comprising:

[0039] When the existing structure is an open-cut or covered-cut station, if the covering layer is a sand layer, the hourglass model is used for calculation. Based on the geometric relationship in the hourglass model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly;

[0040] According to the basic address data and the structural parameters of the existing structure, the excavation depth h of the open-cut station foundation pit and the thickness H1 of the covering layer are obtained;

[0041] Determine the approach range L of the existing structure based on the excavation depth h of the open-cut station foundation pit

[0042] L = 2h;

[0043] According to the thickness of the cover layer H1, determine the limit range M of the tunnel affected by karst ground collapse

[0044]

[0045] Where θ is the collapse angle determined according to the hourglass model;

[0046] According to the hourglass model, the geometric relationship between the range parameters under critical conditions is established to obtain the control protection zone range a under critical conditions.

[0047]

[0048] If the cover layer is a clay layer, the soil hole model is used for calculation. Based on the geometric relationship in the soil hole model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly.

[0049] According to the foundation address data and the structural parameters of the existing structure, the soil hole span B is obtained;

[0050] Determine the approach range L of the existing structure based on the excavation depth h of the open-cut station foundation pit

[0051] L = 2h;

[0052] According to the soil tunnel span B, determine the limit range M of the tunnel affected by karst ground collapse

[0053] M = 1.0B;

[0054] According to the soil hole model, the geometric relationship between the range parameters under critical conditions is established to obtain the range of the control protection area under critical conditions.

[0055] a=L+M+N=2h+B+H.

[0056] In the above scheme, the method of calculating the range parameters under critical conditions is determined based on the position relationship model according to the structural type, structural parameters and corresponding covering layer type of the existing structure, and the range of the control protection zone under the corresponding critical conditions is obtained, further comprising:

[0057] When the existing structure is a mining station, if the covering layer is a sand layer, the hourglass model is used for calculation. Based on the geometric relationship in the hourglass model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly; among them,

[0058] According to the basic address data and the structural parameters of the existing structure, the tunnel rough hole span W and the cover layer thickness H1 are obtained;

[0059] Determine the approach range L of the existing structure based on the rough tunnel span W

[0060] L = 2.5W;

[0061] According to the thickness of the cover layer H1, determine the limit range M of the tunnel affected by karst ground collapse

[0062]

[0063] Where θ is the collapse angle determined according to the hourglass model;

[0064] According to the hourglass model, the geometric relationship between the range parameters under critical conditions is established to obtain the control protection zone range a under critical conditions.

[0065]

[0066] If the cover layer is a clay layer, the soil hole model is used for calculation. Based on the geometric relationship in the soil hole model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly.

[0067] According to the foundation address data and the structural parameters of the existing structure, the soil hole span B is obtained;

[0068] Determine the approach range L of the existing structure based on the rough tunnel span W

[0069] L = 2.5W;

[0070] According to the soil tunnel span B, determine the limit range M of the tunnel affected by karst ground collapse

[0071] M = 1.0B;

[0072] According to the soil hole model, the geometric relationship between the range parameters under critical conditions is established to obtain the range of the control protection area under critical conditions.

[0073] a=L+M+N=2.5W+B+H.

[0074] According to another aspect of the present invention, a device for determining the range of a rail transit structure control protection zone in a karst environment is provided, comprising: a parameter acquisition and type determination module, a model building module and a range determination module; wherein:

[0075] The parameter acquisition and type determination module is used to obtain basic address data and structural parameters of existing structures, determine the location of existing structures in geological sections and the corresponding covering layer type;

[0076] The model building module is used to build a position relationship model between the existing structure and the external operation relative space according to the type of covering layer corresponding to the location of the existing structure;

[0077] The range determination module is used to determine the range parameter calculation method under critical conditions based on the structural type, structural parameters and corresponding covering layer type of the existing structure and the position relationship model, and to obtain the control protection zone range under the corresponding critical conditions.

[0078] According to another aspect of the present invention, there is provided a computing device, comprising: a processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus;

[0079] The memory is used to store at least one executable instruction, and the executable instruction enables the processor to perform operations corresponding to the method for determining the scope of the rail transit structure control protection zone under the karst environment as described above.

[0080] According to another aspect of the present invention, a computer storage medium is provided, wherein at least one executable instruction is stored in the storage medium, and the executable instruction enables a processor to execute operations corresponding to the method for determining the scope of a rail transit structure control protection zone in a karst environment as described above.

[0081] According to the technical solution provided by the present invention, basic address data and structural parameters of the existing structure are obtained to determine the position of the existing structure in the geological section and the corresponding covering layer type; according to the covering layer type corresponding to the position of the existing structure, a corresponding position relationship model of the existing structure and the external operation relative space is established; according to the structural type, structural parameters and corresponding covering layer type of the existing structure, based on the position relationship model, a calculation method of the range parameters under critical conditions is determined, and the range of the control protection zone under the corresponding critical conditions is obtained. By acquiring basic geological data and relevant parameters of existing structures, the position of the tunnel or station as an existing structure in the geological section is determined. Combined with the stratification of the geological section, the geological conditions near the existing structure are accurately determined. Based on the type of covering layer, a position relationship model between the existing structure and the external operation in relative space is established in a targeted manner, so as to clearly reflect the position relationship and geometric relationship between the two. On the basis of this model, based on the different structural types and different stratum types of the existing structure, the critical conditions that will affect the existing structure in various cases are determined. According to the critical conditions at this time, the calculation method of the relevant parameters of the safety protection zone is scientifically determined, and then the corresponding control protection zone range under different circumstances is obtained accurately and reasonably. In this way, all possible combinations of existing structures and stratum types that may appear at present are analyzed, and the corresponding control protection zone range under various circumstances is scientifically and comprehensively obtained, which improves the accuracy and adaptability of setting the control protection zone range in the face of external construction operations. While further improving the safety of the transportation infrastructure structure, the rights and interests of the external construction workers are taken into account, and the drawbacks of insufficient or excessive design of the control protection zone range are avoided, which greatly improves the rationality of the processing process and provides effective guidance to the staff related to the transportation infrastructure.

[0082] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0083] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0084] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0085] Figure 1 A schematic flow chart of a method for determining the range of a rail transit structure control protection zone in a karst environment according to an embodiment of the present invention is shown;

[0086] Figure 2 A schematic diagram of an hourglass model according to an embodiment of the present invention is shown;

[0087] Figure 3 A schematic diagram of a soil hole model according to an embodiment of the present invention is shown;

[0088] Figure 4 A schematic diagram showing a flow chart of a method for determining a covering layer type according to an embodiment of the present invention is shown;

[0089] Figure 5 A schematic flow chart of a method for calculating range parameters and determining a range of a control protection zone under critical conditions according to an embodiment of the present invention is shown;

[0090] Figure 6 A schematic diagram of the scope of a tunnel control protection zone based on an hourglass model according to an embodiment of the present invention is shown;

[0091] Figure 7 A schematic diagram of the scope of a tunnel control protection zone based on a soil cave model according to an embodiment of the present invention is shown;

[0092] Figure 8 A schematic diagram of the control protection area of ​​an open-cut and covered-cut station based on an hourglass model according to an embodiment of the present invention is shown;

[0093] Fig. 9 A schematic diagram of the control protection area of ​​an open-cut and covered-cut station based on a soil cave model according to an embodiment of the present invention is shown;

[0094] Fig.10 A schematic diagram of the control protection area of ​​a mine station based on an hourglass model according to an embodiment of the present invention is shown;

[0095] Fig.11 A schematic diagram of the control protection area of ​​a mine station based on a soil cave model according to an embodiment of the present invention is shown;

[0096] Fig.12 A schematic flow chart of a method for determining the range of a rail transit structure control protection zone in a karst environment according to another embodiment of the present invention is shown;

[0097] Fig.13 A structural block diagram of a device for determining the range of a rail transit structure control protection zone in a karst environment according to an embodiment of the present invention is shown;

[0098] Fig.14 A schematic structural diagram of a computing device according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0099] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0100] Figure 1 A schematic flow chart of a method for determining the range of a rail transit structure control protection zone in a karst environment according to an embodiment of the present invention is shown. The method comprises the following steps:

[0101] Step S101, obtaining basic address data and structural parameters of the existing structure, determining the position of the existing structure in the geological section and the corresponding cover layer type.

[0102] Preferably, this method is only for existing underground main structures, including only section tunnels and underground stations, and auxiliary structures, elevated structures, etc. are not within the scope of this method.

[0103] The structural types of the existing underground main structure include: interval tunnels, and underground stations; wherein the underground stations further include: open-cut stations, covered-cut stations, and mining stations;

[0104] The types of covering layers include at least sandy soil layers and clay layers.

[0105] Step S102: establishing a corresponding karst ground collapse physical model according to the type of covering layer corresponding to the location of the existing structure.

[0106] Preferably, the karst ground collapse physical model includes an hourglass model and a soil hole model;

[0107] When the cover layer type is a sandy soil layer, it corresponds to an hourglass model;

[0108] When the cover layer type is a clay layer, it corresponds to a soil cave model.

[0109] The hourglass model is as follows Figure 2 As shown, Figure 2 The schematic diagram of the hourglass model according to an embodiment of the present invention is shown, wherein the collapse pit formed by the hourglass-shaped karst ground collapse influence range can be more clearly represented as two oblique lines extending symmetrically upward from the center of the cave. The angle between the oblique line and the horizontal line is the collapse angle, and the collapse angle is taken as the magnitude of the internal friction angle of the sand layer.

[0110] The soil hole model is as follows Figure 3 As shown, Figure 3 A schematic diagram of a soil cave model according to an embodiment of the present invention is shown, wherein the impact range of soil cave type karst ground collapse can be relatively clearly represented as a vertical line extending upward from the outer contour of the soil cave.

[0111] Step S103, based on the structural type, structural parameters and corresponding covering layer type of the existing structure, the relative position relationship between the existing structure, karst ground collapse and external operations is established, the range parameter calculation method under critical conditions is determined, and the control protection zone range under the corresponding critical conditions is obtained.

[0112] Preferably, the external operation is selected for analysis as the foundation pit project with the largest impact range, and this type of project that has the greatest adverse impact on the karst area is used as the basis for model establishment, that is, the maximum value of the possible impact range is obtained based on this type, so that the control and protection zone range finally determined can include the control and protection zone ranges corresponding to the remaining various external operation project types.

[0113] Specifically, the range parameters include the external operation influence range, the limit range of karst ground collapse affecting the tunnel, and the approach range of existing structures. The influencing factor of external operation corresponds to the external operation influence range, the influencing factor of karst collapse corresponds to the limit range of karst ground collapse affecting the tunnel, and the influencing factor of existing structure corresponds to the approach range of existing structures. In addition, since the influence of external operation may cause the karst ground between the external operation area and the existing structure to collapse, the collapse range further affects the safety of the existing structure. Therefore, the control protection range is formed by the superposition of the three range parameters: the external operation influence range, the limit range of karst ground collapse affecting the tunnel, and the approach range of the existing structure.

[0114] Preferably, referring to the external operation impact zoning and proximity levels in CJJ / T 202-2013 "Technical Specifications for Safety Protection of Urban Rail Transit Structures", the boundary between the significant impact zone and the general impact zone is used as the critical position of the external operation affecting the karst layer, and the boundary between the relatively close and non-close existing structures is used as the critical position of the existing structures affected by karst, and the critical conditions are determined accordingly.

[0115] According to a method for determining the scope of a control protection zone of a rail transit structure under a karst environment provided in this embodiment, basic address information and structural parameters of an existing structure are obtained to determine the position of the existing structure in a geological section and the corresponding covering layer type; a corresponding position relationship model of the existing structure and the relative space of external operations is established based on the covering layer type corresponding to the location of the existing structure; based on the structural type, structural parameters and corresponding covering layer type of the existing structure, a calculation method of the scope parameters under critical conditions is determined based on the position relationship model, and the scope of the control protection zone under the corresponding critical conditions is obtained. Through the method for determining the scope of the control protection zone of a rail transit structure in a karst environment provided by the present embodiment, the basic geological data and relevant parameters of the existing structure are obtained to determine the position of the tunnel or station as the existing structure in the geological section, and the geological conditions near the existing structure are accurately determined in combination with the stratification of the geological section. Therefore, a position relationship model of the relative space between the existing structure and the external operation is established in a targeted manner based on the covering layer type, so as to clearly reflect the positional relationship and geometric relationship between the two. On the basis of this model, based on the different structural types and different stratum types of the existing structure, the critical conditions that will affect the existing structure under various circumstances are determined, and the calculation method of the relevant parameters of the safety guarantee zone is scientifically determined according to the critical conditions at this time, and the scope of the control protection zone is obtained, thereby improving the structural safety of the transportation infrastructure and providing effective guidance to the personnel related to the transportation infrastructure.

[0116] Figure 4 FIG. 4 is a flow chart showing a method for determining a covering layer type according to an embodiment of the present invention. Figure 4 As shown, the method comprises the following steps:

[0117] Step S401, based on the location of the existing structure in the geological section and basic address data, determine the type of stratum where the existing structure is located.

[0118] Preferably, the formation types include at least a karst layer and a covering layer.

[0119] Step S402, determining whether the stratum type where the existing structure is located is a karst layer.

[0120] Specifically, if yes, execute step S403; if no, execute step S404.

[0121] Step S403, ending the method for determining the range of the rail transit structure control protection zone in the karst environment.

[0122] When the existing structure is located in soluble rock, that is, in a karst layer, since the soluble rock is relatively stable, it does not belong to the several situations targeted by the present invention and is not suitable for further analysis using the method of the present invention.

[0123] However, the present invention is applicable to areas with soil on top and rock on the bottom, that is, the covering layer type is a sandy soil layer or a clay layer, and the lower part is a karst layer of soluble rock.

[0124] Step S404: determine the corresponding covering layer type.

[0125] Preferably, the types of covering layers include at least a sand layer and a clay layer.

[0126] According to the above method, the type of stratum in which the existing structure is located is accurately determined based on the location of the existing structure in the geological section and the basic address data, which effectively helps to select an appropriate model when calculating the scope of the control protection area in the subsequent period, and eliminates situations where this method is not suitable, thus avoiding incorrect application.

[0127] Figure 5 A schematic flow chart of a method for calculating range parameters and determining a range of a control protection zone under critical conditions according to an embodiment of the present invention is shown;

[0128] like Figure 5 As shown, the method comprises the following steps:

[0129] Step S501, determining the structure type, structure parameters and corresponding cover layer type of the existing structure, and determining a position relationship model.

[0130] Step S502, determining a range parameter calculation method under critical conditions.

[0131] Step S503, calculating the range of the control protection zone under critical conditions according to the range parameters.

[0132] Specifically, when the existing structure is a section tunnel and the cover layer is a sand layer, the hourglass model is used for calculation. Based on the geometric relationship in the hourglass model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly; Figure 6 As shown, Figure 6 FIG. 1 shows a schematic diagram of a tunnel control protection zone based on an hourglass model according to an embodiment of the present invention; wherein:

[0133] According to the basic address data and the structural parameters of the existing structure, the diameter D of the interval tunnel, the excavation depth H of the external working foundation pit and the distance H2 from the center of the tunnel to the soil-rock interface are obtained;

[0134] Determine the approach range L of the existing structure based on the diameter D of the interval tunnel

[0135] L = 3D;

[0136] According to the distance H2 from the tunnel center to the soil-rock interface, determine the limit range M of the tunnel affected by karst ground collapse

[0137]

[0138] Where θ is the collapse angle determined according to the hourglass model;

[0139] According to the hourglass model, the geometric relationship between the range parameters under critical conditions is established to obtain the control protection zone range a under critical conditions.

[0140]

[0141] Wherein, N is the impact range of external operation, and N=1.0H.

[0142] Preferably, for the diameter D of the interval tunnel, if the tunnel excavation process adopts the shield method and / or the jacking method, the equivalent diameter corresponding to the diameter D of the interval tunnel is the original diameter of the tunnel;

[0143] If the tunnel excavation process adopts the mining method, the equivalent diameter corresponding to the diameter D of the interval tunnel is the equivalent circle diameter of its area

[0144]

[0145] Where S is the equivalent circle area.

[0146] Preferably, the relationship between the external operation impact range N and the external operation foundation pit excavation depth H is also determined based on CJJ / T202-2013 "Technical Specifications for Safety Protection of Urban Rail Transit Structures".

[0147] That is, N=1.0H.

[0148] Specifically, if the cover layer is a clay layer, the soil hole model is used for calculation; based on the geometric relationship in the soil hole model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly; Figure 7 As shown, Figure 7 A schematic diagram of the tunnel control protection area based on a soil cave model according to an embodiment of the present invention is shown; wherein:

[0149] According to the foundation address data and the structural parameters of the existing structure, the soil hole span B is obtained;

[0150] Determine the approach range L of the existing structure based on the diameter D of the interval tunnel

[0151] L = 3D;

[0152] According to the soil tunnel span B, determine the limit range M of the tunnel affected by karst ground collapse

[0153] M = 1.0B;

[0154] According to the soil hole model, the geometric relationship between the range parameters under critical conditions is established to obtain the range of the control protection area under critical conditions.

[0155] a=L+M+N=3D+B+H.

[0156] Preferably, for the diameter D of the interval tunnel, if the tunnel excavation process adopts the shield method and / or the jacking method, the equivalent diameter corresponding to the diameter D of the interval tunnel is the original diameter of the tunnel;

[0157] If the tunnel excavation process adopts the mining method, the equivalent diameter corresponding to the diameter D of the interval tunnel is the equivalent circle diameter of its area

[0158]

[0159] Where S is the equivalent circle area.

[0160] Specifically, when the existing structure is an open-cut or covered-cut station, if the cover layer is a sand layer, the hourglass model is used for calculation. Based on the geometric relationship in the hourglass model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly; Figure 8 As shown, Figure 8 The figure shows a schematic diagram of the control protection area of ​​an open-cut and covered-cut station based on an hourglass model according to an embodiment of the present invention; wherein:

[0161] According to the basic address data and the structural parameters of the existing structure, the excavation depth h of the open-cut station foundation pit and the thickness H1 of the covering layer are obtained;

[0162] Determine the approach range L of the existing structure based on the excavation depth h of the open-cut station foundation pit

[0163] L = 2h;

[0164] According to the thickness of the cover layer H1, determine the limit range M of the tunnel affected by karst ground collapse

[0165]

[0166] Where θ is the collapse angle determined according to the hourglass model;

[0167] According to the hourglass model, the geometric relationship between the range parameters under critical conditions is established to obtain the control protection zone range a under critical conditions.

[0168]

[0169] Specifically, if the cover layer is a clay layer, the soil hole model is used for calculation; based on the geometric relationship in the soil hole model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly; Fig. 9 As shown, Fig. 9 The figure shows a schematic diagram of the control protection area of ​​an open cut and covered cut station based on a soil hole model according to an embodiment of the present invention; wherein:

[0170] According to the foundation address data and the structural parameters of the existing structure, the soil hole span B is obtained;

[0171] Determine the approach range L of the existing structure based on the excavation depth h of the open-cut station foundation pit

[0172] L = 2h;

[0173] According to the soil tunnel span B, determine the limit range M of the tunnel affected by karst ground collapse

[0174] M = 1.0B;

[0175] According to the soil hole model, the geometric relationship between the range parameters under critical conditions is established to obtain the range of the control protection area under critical conditions.

[0176] a=L+M+N=2h+B+H.

[0177] Specifically, when the structure type of the existing structure is a mining station, if the covering layer is a sand layer, the hourglass model is used for calculation. Based on the geometric relationship in the hourglass model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly; Fig.10 As shown, Fig.10 The figure shows a schematic diagram of the control protection area of ​​a mine station based on an hourglass model according to an embodiment of the present invention; wherein:

[0178] According to the basic address data and the structural parameters of the existing structure, the tunnel rough hole span W and the cover layer thickness H1 are obtained;

[0179] Determine the approach range L of the existing structure based on the rough tunnel span W

[0180] L = 2.5W;

[0181] According to the thickness of the cover layer H1, determine the limit range M of the tunnel affected by karst ground collapse

[0182]

[0183] Where θ is the collapse angle determined according to the hourglass model;

[0184] According to the hourglass model, the geometric relationship between the range parameters under critical conditions is established to obtain the control protection zone range a under critical conditions.

[0185]

[0186] If the cover layer is a clay layer, the soil hole model is used for calculation; based on the geometric relationship in the soil hole model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly; Fig.11 As shown, Fig.11 The figure shows a schematic diagram of the control protection area of ​​a mine station based on a soil cave model according to an embodiment of the present invention; wherein:

[0187] According to the foundation address data and the structural parameters of the existing structure, the soil hole span B is obtained;

[0188] Determine the approach range L of the existing structure based on the rough tunnel span W

[0189] L = 2.5W;

[0190] According to the soil tunnel span B, determine the limit range M of the tunnel affected by karst ground collapse

[0191] M = 1.0B;

[0192] According to the soil hole model, the geometric relationship between the range parameters under critical conditions is established to obtain the range of the control protection area under critical conditions.

[0193] a=L+M+N=2.5W+B+H.

[0194] Therefore, six situations consisting of three different existing structure types and two cover layer types were analyzed, and the corresponding control protection area range in each case was obtained.

[0195] Based on this, we can also get a specific method to determine the scope of the safety protection zone, such as Fig.12 As shown, Fig.12 A schematic flow chart of a method for determining the range of a rail transit structure control protection zone in a karst environment according to another embodiment of the present invention is shown.

[0196] Among them, it is first determined whether the existing structure is located in the overlying layer. If it is located in soluble rock, it ends directly. If it is located in the overlying layer, the type of ground collapse is determined, and the position relationship model is further determined based on the collapse type. Then, according to the type of existing structure, the three parameter ranges to be superimposed are determined. Finally, according to the type of existing structure, the final corresponding formula for calculating the range of the control protection zone is determined according to the hourglass model and the soil hole model.

[0197] According to the above method, based on the positional relationship model between the existing structure and the external operation relative space, as well as the different structural types of the existing structure and the different stratum types, various different situations that may occur are distinguished, and the critical situations that will affect the existing structure in various situations are determined respectively. According to the critical conditions at this time, the calculation method of the relevant parameters of the corresponding safety assurance zone range is scientifically determined. In this way, various combinations of existing structures and stratum types that may appear at present are analyzed, and the corresponding control protection zone ranges in various situations are scientifically and comprehensively obtained, which improves the accuracy and adaptability of setting the control protection zone range in the face of external construction operations, and also greatly improves the safety of transportation facility operation. It also provides effective guidance for transportation infrastructure-related personnel facing complex display situations.

[0198] Fig.13 FIG. 4 shows a structural block diagram of a device for determining a range of a rail transit structure control protection zone in a karst environment according to an embodiment of the present invention. Fig.13 As shown, the system includes: a parameter acquisition and type determination module 1301, a model building module 1302 and a range determination module 1303; wherein,

[0199] The parameter acquisition and type determination module 1301 is used to obtain basic address data and structural parameters of existing structures, determine the position of the existing structure in the geological section and the corresponding cover layer type.

[0200] Specifically, the structural types of the existing structure include: interval tunnels, and underground stations; wherein the underground stations further include: open-cut and covered-cut stations, and mining stations.

[0201] Specifically, the parameter acquisition and type determination module 1301 is further used to:

[0202] Based on the location of the existing structure in the geological section and the basic address data, determine the type of stratum in which the existing structure is located; wherein the stratum type includes at least a karst layer and a cover layer;

[0203] If the existing structure is in the karst layer, then the method for determining the range of the rail transit structure control protection zone in the karst environment is terminated;

[0204] If the existing structure is in an overburden layer, the corresponding overburden layer type is further determined; wherein the overburden layer type includes at least a sand layer and a clay layer.

[0205] The model building module 1302 is used to build a position relationship model between the existing structure and the external operation relative space according to the type of covering layer corresponding to the location of the existing structure.

[0206] Specifically, the model building module 1302 is further used to:

[0207] The position relationship model between the existing structure and the external operation relative space includes an hourglass model and a soil hole model;

[0208] When the cover layer type is a sandy soil layer, it corresponds to an hourglass model;

[0209] When the cover layer type is a clay layer, it corresponds to a soil cave model.

[0210] The range determination module 1303 is used to determine the range parameter calculation method under critical conditions according to the structural type, structural parameters and corresponding covering layer type of the existing structure based on the position relationship model, and obtain the control protection zone range under the corresponding critical conditions.

[0211] Specifically, the range determination module 1303 is further used to:

[0212] When the existing structure is a section tunnel, if the covering layer is a sand layer, the hourglass model is used for calculation. Based on the geometric relationship in the hourglass model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly;

[0213] According to the basic address data and the structural parameters of the existing structure, the diameter D of the interval tunnel, the excavation depth H of the external working foundation pit and the distance H2 from the center of the tunnel to the soil-rock interface are obtained;

[0214] Determine the approach range L of the existing structure based on the diameter D of the interval tunnel

[0215] L = 3D;

[0216] According to the distance H2 from the tunnel center to the soil-rock interface, determine the limit range M of the tunnel affected by karst ground collapse

[0217]

[0218] Where θ is the collapse angle determined according to the hourglass model;

[0219] According to the hourglass model, the geometric relationship between the range parameters under critical conditions is established to obtain the control protection zone range a under critical conditions.

[0220]

[0221] Wherein, N is the impact range of external operation, and N = 1.0H;

[0222] If the cover layer is a clay layer, the soil hole model is used for calculation. Based on the geometric relationship in the soil hole model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly.

[0223] According to the foundation address data and the structural parameters of the existing structure, the soil hole span B is obtained;

[0224] Determine the approach range L of the existing structure based on the diameter D of the interval tunnel

[0225] L = 3D;

[0226] According to the soil tunnel span B, determine the limit range M of the tunnel affected by karst ground collapse

[0227] M = 1.0B;

[0228] According to the soil hole model, the geometric relationship between the range parameters under critical conditions is established to obtain the range of the control protection area under critical conditions.

[0229] a=L+M+N=3D+B+H.

[0230] Specifically, the range determination module 1303 is further used to:

[0231] When the existing structure is an open-cut or covered-cut station, if the covering layer is a sand layer, the hourglass model is used for calculation. Based on the geometric relationship in the hourglass model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly;

[0232] According to the basic address data and the structural parameters of the existing structure, the excavation depth h of the open-cut station foundation pit and the thickness H1 of the covering layer are obtained;

[0233] Determine the approach range L of the existing structure based on the excavation depth h of the open-cut station foundation pit

[0234] L = 2h;

[0235] According to the thickness of the cover layer H1, determine the limit range M of the tunnel affected by karst ground collapse

[0236]

[0237] Where θ is the collapse angle determined according to the hourglass model;

[0238] According to the hourglass model, the geometric relationship between the range parameters under critical conditions is established to obtain the control protection zone range a under critical conditions.

[0239]

[0240] If the cover layer is a clay layer, the soil hole model is used for calculation. Based on the geometric relationship in the soil hole model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly.

[0241] According to the foundation address data and the structural parameters of the existing structure, the soil hole span B is obtained;

[0242] Determine the approach range L of the existing structure based on the excavation depth h of the open-cut station foundation pit

[0243] L = 2h;

[0244] According to the soil tunnel span B, determine the limit range M of the tunnel affected by karst ground collapse

[0245] M = 1.0B;

[0246] According to the soil hole model, the geometric relationship between the range parameters under critical conditions is established to obtain the range of the control protection area under critical conditions.

[0247] a=L+M+N=2h+B+H.

[0248] Specifically, the range determination module 1303 is further used to:

[0249] When the existing structure is a mining station, if the covering layer is a sand layer, the hourglass model is used for calculation. Based on the geometric relationship in the hourglass model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly; among them,

[0250] According to the basic address data and the structural parameters of the existing structure, the tunnel rough hole span W and the cover layer thickness H1 are obtained;

[0251] Determine the approach range L of the existing structure based on the rough tunnel span W

[0252] L = 2.5W;

[0253] According to the thickness of the cover layer H1, determine the limit range M of the tunnel affected by karst ground collapse

[0254]

[0255] Where θ is the collapse angle determined according to the hourglass model;

[0256] According to the hourglass model, the geometric relationship between the range parameters under critical conditions is established to obtain the control protection zone range a under critical conditions.

[0257]

[0258] If the cover layer is a clay layer, the soil hole model is used for calculation. Based on the geometric relationship in the soil hole model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly.

[0259] According to the foundation address data and the structural parameters of the existing structure, the soil hole span B is obtained;

[0260] Determine the approach range L of the existing structure based on the rough tunnel span W

[0261] L = 2.5W;

[0262] According to the soil tunnel span B, determine the limit range M of the tunnel affected by karst ground collapse

[0263] M = 1.0B;

[0264] According to the soil hole model, the geometric relationship between the range parameters under critical conditions is established to obtain the range of the control protection area under critical conditions.

[0265] a=L+M+N=2.5W+B+H.

[0266] According to the present embodiment, a device for determining the scope of a control protection zone of a rail transit structure under a karst environment is provided, comprising: a parameter acquisition and type determination module, a model establishment module and a scope determination module; wherein the parameter acquisition and type determination module is used to acquire basic address information and structural parameters of an existing structure, and determine the position of the existing structure in a geological section and the corresponding covering layer type; the model establishment module is used to establish a corresponding position relationship model between the existing structure and the external operation relative space according to the covering layer type corresponding to the position of the existing structure; the scope determination module is used to determine the scope parameter calculation method under critical conditions based on the position relationship model according to the structural type, structural parameters and corresponding covering layer type of the existing structure, and derive the scope of the control protection zone under the corresponding critical conditions. Through the device for determining the range of the rail transit structure control protection zone in a karst environment provided by the present embodiment, the position of the tunnel or station as the existing structure in the geological section is determined by acquiring basic geological data and relevant parameters of the existing structure, and the geological conditions near the existing structure are accurately determined in combination with the stratification of the geological section. Therefore, a position relationship model of the relative space between the existing structure and the external operation is established in a targeted manner based on the covering layer type, so as to clearly reflect the positional relationship and geometric relationship between the two. On the basis of this model, based on the different structural types and different stratum types of the existing structure, the critical conditions that will affect the existing structure under various circumstances are determined, and according to the critical conditions at this time, the critical conditions are scientifically determined. The calculation method for determining the relevant parameters of the safety zone range can also accurately and reasonably obtain the corresponding control and protection zone range under different situations. In this way, various combinations of existing structures and stratum types that may appear at present are analyzed, and the corresponding control and protection zone ranges under various situations are scientifically and comprehensively obtained, which improves the accuracy and adaptability of setting the control and protection zone range when facing external construction work. While further improving the structural safety of transportation infrastructure, the rights and interests of external construction workers are taken into account, avoiding the disadvantages of insufficient or excessive design of the control and protection zone range, greatly improving the rationality of the processing process, and providing effective guidance to transportation infrastructure-related personnel.

[0267] The present invention also provides a non-volatile computer storage medium, which stores at least one executable instruction, and the executable instruction can execute operations corresponding to a method for determining the scope of a rail transit structure control protection zone in a karst environment in any of the above-mentioned method embodiments.

[0268] Fig.14 A schematic diagram of the structure of a computing device according to an embodiment of the present invention is shown. The specific embodiment of the present invention does not limit the specific implementation of the computing device.

[0269] like Fig.14As shown, the computing device may include: a processor (processor) 1402 , a communication interface (Communications Interface) 1404 , a memory (memory) 1406 , and a communication bus 1408 .

[0270] in:

[0271] The processor 1402 , the communication interface 1404 , and the memory 1406 communicate with each other via a communication bus 1408 .

[0272] The communication interface 1404 is used to communicate with other devices such as clients or other servers.

[0273] The processor 1402 is used to execute the program 1410, and specifically can execute the relevant steps in the above-mentioned embodiment of the method for determining the scope of the rail transit structure control protection zone in a karst environment.

[0274] Specifically, the program 1410 may include program code, which includes computer operation instructions.

[0275] The processor 1402 may be a central processing unit (CPU), or an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present invention. The one or more processors included in the computing device may be processors of the same type, such as one or more CPUs; or may be processors of different types, such as one or more CPUs and one or more ASICs.

[0276] The memory 1406 is used to store the program 1410. The memory 1406 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0277] Program 1410 can be specifically used to enable processor 1402 to execute a method for determining the scope of a rail transit structure control protection zone under a karst environment in any of the above-mentioned method embodiments. The specific implementation of each step in program 1410 can refer to the corresponding descriptions in the corresponding steps and units in the above-mentioned method for determining the scope of a rail transit structure control protection zone under a karst environment embodiment, which will not be repeated here. Technicians in the relevant field can clearly understand that for the convenience and conciseness of description, the specific working process of the above-described equipment and modules can refer to the corresponding process description in the aforementioned method embodiment, which will not be repeated here.

[0278] The algorithm and display provided herein are not inherently related to any particular computer, virtual system or other device. Various general purpose systems can also be used together with the teachings based on this. According to the above description, it is obvious that the structure required for constructing such systems. In addition, the present invention is not directed to any specific programming language either. It should be understood that various programming languages ​​can be utilized to realize the content of the present invention described herein, and the description of the above specific languages ​​is for disclosing the best mode of the present invention.

[0279] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0280] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the intention that the claimed invention requires more features than those expressly recited in each claim. Rather, as reflected in the claims, inventive aspects lie in less than all of the features of the individual embodiments previously disclosed. Therefore, the claims that follow the detailed description are hereby expressly incorporated into the detailed description, with each claim itself serving as a separate embodiment of the present invention.

[0281] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and in addition they may be divided into a plurality of submodules or subunits or subcomponents. Except that at least some of such features and / or processes or units are mutually exclusive, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this manner may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0282] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0283] The various component embodiments of the present invention can be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. It should be understood by those skilled in the art that a microprocessor or digital signal processor (DSP) can be used in practice to implement some or all of the functions of some or all of the components in the embodiments of the present invention. The present invention can also be implemented as a device or apparatus program (e.g., computer program and computer program product) for executing part or all of the methods described herein. Such a program implementing the present invention can be stored on a computer-readable medium, or can have the form of one or more signals. Such a signal can be downloaded from an Internet website, or provided on a carrier signal, or provided in any other form.

[0284] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for determining the scope of a rail transit structure control protection zone in a karst environment, comprising: Obtain basic address data and structural parameters of existing structures, determine the location of existing structures in geological sections and the corresponding cover type; According to the type of covering layer corresponding to the location of the existing structure, a position relationship model between the existing structure and the external operation relative space is established; According to the structural type, structural parameters and corresponding covering layer type of the existing structure, based on the position relationship model, the calculation method of the range parameters under critical conditions is determined, and the range of the control protection zone under the corresponding critical conditions is obtained.

2. The method for determining the range of the rail transit structure control protection zone under the karst environment according to claim 1 is characterized in that: The step of obtaining basic address data and structural parameters of the existing structure and determining the location of the existing structure in the geological section and the corresponding covering layer type further includes: Based on the location of the existing structure in the geological section and the basic address data, determine the type of stratum in which the existing structure is located; wherein the stratum type includes at least a karst layer and a cover layer; If the existing structure is in the karst layer, then the method for determining the range of the rail transit structure control protection zone in the karst environment is terminated; If the existing structure is in an overburden layer, the corresponding overburden layer type is further determined; wherein the overburden layer type includes at least a sand layer and a clay layer.

3. The method for determining the range of the rail transit structure control protection zone under the karst environment according to claim 1 is characterized in that: The method further includes: establishing a position relationship model between the corresponding existing structure and the external operation relative space according to the type of the covering layer corresponding to the location of the existing structure; The position relationship model between the existing structure and the external operation relative space includes an hourglass model and a soil hole model; When the cover layer type is a sandy soil layer, it corresponds to an hourglass model; When the cover layer type is a clay layer, it corresponds to a soil cave model.

4. The method for determining the range of the rail transit structure control protection zone under the karst environment according to claim 1 is characterized in that: The structural types of the existing structure include: interval tunnels, and underground stations; wherein the underground stations further include: open-cut and covered-cut stations, and mining stations.

5. The method for determining the range of the rail transit structure control protection zone under a karst environment according to claim 1 or 4, characterized in that: The method of calculating the range parameters under critical conditions is determined based on the position relationship model according to the structural type, structural parameters and corresponding covering layer type of the existing structure, and the range of the control protection zone under the corresponding critical conditions is obtained, further comprising: When the existing structure is a section tunnel, if the covering layer is a sand layer, the hourglass model is used for calculation. Based on the geometric relationship in the hourglass model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly; According to the basic address data and the structural parameters of the existing structure, the diameter D of the interval tunnel, the excavation depth H of the external working foundation pit and the distance H2 from the center of the tunnel to the soil-rock interface are obtained; Determine the approach range L of the existing structure based on the diameter D of the interval tunnel L = 3D; According to the distance H2 from the tunnel center to the soil-rock interface, determine the limit range M of the tunnel affected by karst ground collapse Where θ is the collapse angle determined according to the hourglass model; According to the hourglass model, the geometric relationship between the range parameters under critical conditions is established to obtain the control protection zone range a under critical conditions. Wherein, N is the impact range of external operation, and N = 1.0H; If the cover layer is a clay layer, the soil hole model is used for calculation. Based on the geometric relationship in the soil hole model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly. According to the foundation address data and the structural parameters of the existing structure, the soil hole span B is obtained; Determine the approach range L of the existing structure based on the diameter D of the interval tunnel L = 3D; According to the soil tunnel span B, determine the limit range M of the tunnel affected by karst ground collapse M = 1.0B; According to the soil hole model, the geometric relationship between the range parameters under critical conditions is established to obtain the range of the control protection area under critical conditions. a=L+M+N=3D+B+H.

6. The method for determining the range of the rail transit structure control protection zone under a karst environment according to claim 1 or 4, characterized in that: The method of calculating the range parameters under critical conditions is determined based on the position relationship model according to the structural type, structural parameters and corresponding covering layer type of the existing structure, and the range of the control protection zone under the corresponding critical conditions is obtained, further comprising: When the existing structure is an open-cut or covered-cut station, if the covering layer is a sand layer, the hourglass model is used for calculation. Based on the geometric relationship in the hourglass model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly; According to the basic address data and the structural parameters of the existing structure, the excavation depth h of the open-cut station foundation pit and the thickness H1 of the covering layer are obtained; Determine the approach range L of the existing structure based on the excavation depth h of the open-cut station foundation pit L = 2h; According to the thickness of the cover layer H1, determine the limit range M of the tunnel affected by karst ground collapse Where θ is the collapse angle determined according to the hourglass model; According to the hourglass model, the geometric relationship between the range parameters under critical conditions is established to obtain the control protection zone range a under critical conditions. If the cover layer is a clay layer, the soil hole model is used for calculation. Based on the geometric relationship in the soil hole model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly. According to the foundation address data and the structural parameters of the existing structure, the soil hole span B is obtained; Determine the approach range L of the existing structure based on the excavation depth h of the open-cut station foundation pit L = 2h; According to the soil tunnel span B, determine the limit range M of the tunnel affected by karst ground collapse M = 1.0B; According to the soil hole model, the geometric relationship between the range parameters under critical conditions is established to obtain the range of the control protection area under critical conditions. a=L+M+N=2h+B+H.

7. The method for determining the range of the rail transit structure control protection zone under a karst environment according to claim 1 or 4, characterized in that: The method of calculating the range parameters under critical conditions is determined based on the position relationship model according to the structural type, structural parameters and corresponding covering layer type of the existing structure, and the range of the control protection zone under the corresponding critical conditions is obtained, further comprising: When the existing structure is a mining station, if the covering layer is a sand layer, the hourglass model is used for calculation. Based on the geometric relationship in the hourglass model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly; among them, According to the basic address data and the structural parameters of the existing structure, the tunnel rough hole span W and the cover layer thickness H1 are obtained; Determine the approach range L of the existing structure based on the tunnel rough span W L = 2.5W; According to the thickness of the cover layer H1, determine the limit range M of the tunnel affected by karst ground collapse Where θ is the collapse angle determined according to the hourglass model; According to the hourglass model, the geometric relationship between the range parameters under critical conditions is established to obtain the control protection zone range a under critical conditions. If the cover layer is a clay layer, the soil hole model is used for calculation. Based on the geometric relationship in the soil hole model, the critical conditions for the external operation to affect the existing structure are determined, and the range parameter calculation method is determined accordingly. According to the foundation address data and the structural parameters of the existing structure, the soil hole span B is obtained; Determine the approach range L of the existing structure based on the tunnel rough span W L = 2.5W; According to the soil tunnel span B, determine the limit range M of the tunnel affected by karst ground collapse M = 1.0B; According to the soil hole model, the geometric relationship between the range parameters under critical conditions is established to obtain the range of the control protection area under critical conditions. a=L+M+N=2.5W+B+H.

8. A device for determining the range of a rail transit structure control protection zone in a karst environment, comprising: Parameter acquisition and type determination module, model building module and range determination module; wherein, The parameter acquisition and type determination module is used to obtain basic address data and structural parameters of existing structures, determine the location of existing structures in geological sections and the corresponding covering layer type; The model building module is used to build a position relationship model between the existing structure and the external operation relative space according to the type of covering layer corresponding to the location of the existing structure; The range determination module is used to determine the range parameter calculation method under critical conditions based on the structural type, structural parameters and corresponding covering layer type of the existing structure and the position relationship model, and to obtain the control protection zone range under the corresponding critical conditions.

9. A computing device comprising: A processor, a memory, a communication interface and a communication bus, wherein the processor, the memory and the communication interface communicate with each other via the communication bus; The memory is used to store at least one executable instruction, and the executable instruction enables the processor to perform operations corresponding to the method for determining the scope of the rail transit structure control protection zone under a karst environment according to any one of claims 1-7.

10. A computer storage medium, wherein at least one executable instruction is stored in the storage medium, and the executable instruction enables a processor to execute operations corresponding to the method for determining the scope of a rail transit structure control protection zone under a karst environment as described in any one of claims 1 to 7.

Images