A tunneling system and method for pre-support shield equipment

Abstract

The present invention belongs to the technical field of pre-support shield tunneling, and specifically relates to a tunneling system and method for pre-support shield equipment. This invention, this precise strategy ensures the efficiency and safety of the grouting process, avoids structural safety problems caused by insufficient or excessive grouting, and makes the tunneling progress more controllable, realizes the dynamic collection and analysis of various data during the tunneling process, enhances the intelligence level of the shield equipment, selects the appropriate grouting method and area according to real-time data, effectively improves the safety and efficiency of the tunneling process, reduces resource waste through precise grouting control, and ensures the stability and support effect of the tunnel structure, further improving the construction quality.

Description

Technical Field

[0001] The invention belongs to the technical field of pre-support shield tunneling, and in particular relates to a tunneling system and method of a pre-support shield equipment. Background Art

[0002] The construction of tunnels and the development of underground space in complex geological and urban environments are very likely to induce accidents such as surface collapse, structure settlement, and road damage. Especially in the development of urban underground space, the social impact and destructive power caused by these accidents are very large. These accidents are caused by the displacement changes of the surrounding rock within 1.5 times the diameter of the tunnel face. The engineering community has many methods and technical measures to control the displacement and deformation of the surrounding rock in front of the tunnel face. At present, underground space is being vigorously developed, such as rail transit, municipal facilities, civil air defense projects, underground pipe networks, etc. Due to the diversity of the depth, geology and hydrology, scale, structure and function of the proposed underground projects, the differences in the ground environment, underground geological conditions, and the different requirements for the control of construction impacts, and limited by the existing construction technology and technical level, the construction methods of underground projects are diverse, and their advancement, safety and economy are uneven. Therefore, controlling the displacement and deformation of the surrounding rock in front of the tunnel face has become the focus of attention in the engineering community.

[0003] At present, the engineering community has developed a variety of methods and technical measures to control the displacement and deformation of the surrounding rock in front of the tunnel face, but these methods still have many shortcomings in practical application due to factors such as geological conditions, construction technology and technical level. Especially in the development of urban underground space, due to the complex ground environment and changeable underground geological conditions, the requirements for construction methods and technical measures are more stringent. Summary of the invention

[0004] The purpose of the present invention is to provide a tunneling method for a pre-support shield machine, which can significantly improve the tunneling efficiency and safety of the shield machine in a complex environment, reduce the impact on the construction progress, and reduce maintenance and risk costs.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A tunneling method for a pre-support shield device, comprising:

[0007] Obtaining the excavation working state, determining whether the excavation working state meets the first preset requirement, and if not, obtaining excavation resistance data;

[0008] Acquire excavation muck data, and acquire excavation muck change information based on the excavation muck data;

[0009] Obtain the excavation grouting method based on the excavation resistance data and excavation debris change information;

[0010] Acquire corresponding multiple excavation grouting areas according to the excavation grouting method;

[0011] Acquire excavation trajectory data, and acquire excavation trajectory deviation information according to the excavation trajectory data;

[0012] Obtain the excavation grouting focus area based on the excavation trajectory deviation information and multiple excavation grouting areas;

[0013] The excavation grouting strategy is obtained according to the excavation grouting method and the excavation grouting focus area, and the excavation grouting is carried out according to the excavation grouting strategy.

[0014] In a preferred embodiment, the step of obtaining the excavation working state and determining whether the excavation working state meets the first preset requirement, and if not, obtaining the excavation resistance data comprises:

[0015] Get the excavation work status;

[0016] Obtain the standard status of excavation work;

[0017] Determine whether the excavation work status is within the standard excavation work status;

[0018] If the excavation work status does not belong to the standard state of excavation work, the work is determined to be abnormal and the abnormal period is established;

[0019] Obtain excavation resistance data during abnormal periods.

[0020] In a preferred embodiment, the step of obtaining excavation muck data and obtaining excavation muck change information according to the excavation muck data includes:

[0021] Obtain the time when the excavation work status is judged not to meet the first preset requirement, and mark it as the end time;

[0022] Get the standard analysis duration;

[0023] Get the start time based on the standard analysis duration and end time;

[0024] Construct the soil analysis period based on the start time and end time;

[0025] Obtain excavation waste soil data within the waste soil analysis period;

[0026] Acquire a plurality of corresponding excavation muck vectors according to the excavation muck data;

[0027] The excavation muck change information is obtained according to a plurality of excavation muck vectors.

[0028] In a preferred embodiment, the step of obtaining the excavation grouting method according to the excavation resistance data and the excavation muck change information includes:

[0029] Obtain corresponding tunnel face resistance data and cutterhead surrounding resistance data based on excavation resistance data;

[0030] Acquire corresponding multiple tunnel face resistance values ​​according to the tunnel face resistance data;

[0031] Acquire corresponding multiple cutter disc resistance values ​​according to the cutter disc resistance data;

[0032] Obtaining the excavation grouting value according to multiple face resistance values, multiple cutterhead resistance values ​​and excavation debris change information;

[0033] Obtaining a grouting table, wherein the grouting table includes a plurality of excavation grouting interval values ​​and an excavation grouting method corresponding to each excavation grouting interval value;

[0034] Obtain the target excavation grouting interval value according to the excavation grouting value;

[0035] According to the target excavation grouting value, the corresponding excavation grouting method is obtained from the grouting table.

[0036] In a preferred embodiment, the step of obtaining a plurality of corresponding excavation grouting areas according to the excavation grouting method includes:

[0037] Acquire multiple grouting method data, wherein each grouting method data includes a tunneling grouting comparison method and corresponding multiple tunneling grouting areas;

[0038] Acquire grouting mode data whose grouting comparison mode is the same as the excavation grouting comparison mode, and mark it as excavation mode target data;

[0039] The corresponding multiple excavation grouting areas are obtained from the excavation method target data.

[0040] In a preferred embodiment, the step of obtaining the excavation trajectory data and obtaining the excavation trajectory deviation information according to the excavation trajectory data includes:

[0041] Obtain excavation trajectory data;

[0042] Obtaining a plurality of corresponding actual coordinate points of the excavation trajectory according to the excavation trajectory data;

[0043] Acquire excavation trajectory standard data, and acquire multiple excavation trajectory standard coordinate points corresponding to multiple excavation trajectory actual coordinate points according to the excavation trajectory standard data;

[0044] The excavation trajectory deviation information is obtained according to a plurality of actual coordinate points of the excavation trajectory and a plurality of corresponding standard coordinate points of the excavation trajectory.

[0045] In a preferred embodiment, the step of obtaining the excavation grouting focus area according to the excavation trajectory deviation information and multiple excavation grouting areas includes:

[0046] Obtain multiple excavation area resistance values ​​corresponding to each excavation grouting area;

[0047] Obtaining the excavation grouting emphasis value according to multiple excavation area resistance values ​​corresponding to each excavation grouting area and excavation trajectory deviation information;

[0048] Get the excavation grouting emphasis threshold;

[0049] Determine whether the excavation grouting emphasis value exceeds the excavation grouting emphasis threshold;

[0050] If the excavation grouting emphasis value exceeds the excavation grouting emphasis threshold, the excavation grouting area corresponding to the excavation grouting emphasis value exceeding the excavation grouting emphasis threshold will be marked as the excavation grouting emphasis area.

[0051] In a preferred embodiment, the excavation grouting strategy is obtained according to the excavation grouting method and the excavation grouting focus area, and the steps of performing excavation grouting according to the excavation grouting strategy include:

[0052] Obtaining a strategy table, wherein the strategy table includes a plurality of grouting method strategy tables, and each grouting method strategy table includes excavation grouting strategies corresponding to a plurality of grouting focus area strategy sub-tables;

[0053] According to the excavation grouting method, a corresponding grouting method strategy table is obtained from the strategy table;

[0054] According to the excavation grouting focus area, the corresponding target grouting focus area strategy sub-table is obtained from the grouting method strategy table;

[0055] Obtain the corresponding excavation grouting strategy according to the target grouting focus area strategy sub-table;

[0056] Excavation grouting is carried out according to the excavation grouting strategy.

[0057] The present invention also provides a tunneling system for a pre-support shield machine, which is used in the tunneling method for the pre-support shield machine, comprising:

[0058] The excavation state module is used to obtain the excavation working state and determine whether the excavation working state meets the first preset requirement. If not, the excavation resistance data is obtained.

[0059] The excavation slag change module is used to obtain the excavation slag data and obtain the excavation slag change information according to the excavation slag data;

[0060] Grouting method module, used to obtain the excavation grouting method according to the excavation resistance data and excavation slag change information;

[0061] The grouting area module is used to obtain corresponding multiple excavation grouting areas according to the excavation grouting method;

[0062] A trajectory deviation module is used to obtain excavation trajectory data and obtain excavation trajectory deviation information according to the excavation trajectory data;

[0063] The grouting focus module is used to obtain the excavation grouting focus area according to the excavation trajectory deviation information and multiple excavation grouting areas;

[0064] The strategy module is used to obtain the excavation grouting strategy according to the excavation grouting method and the excavation grouting focus area, and perform excavation grouting according to the excavation grouting strategy.

[0065] And, a tunneling terminal of a pre-support shield machine, comprising:

[0066] one or more processors;

[0067] a storage device having one or more programs stored thereon;

[0068] When one or more programs are executed by one or more processors, the one or more processors implement the excavation method of the pre-support shield equipment.

[0069] The technical effects achieved by the present invention are:

[0070] The present invention, this precise strategy ensures the high efficiency and safety of the grouting process, avoids structural safety problems caused by insufficient or excessive grouting, and makes the excavation progress more controllable, realizes the dynamic collection and analysis of various data (such as excavation resistance, slag change, trajectory deviation, etc.) during the excavation process, enhances the intelligence level of shield equipment, selects appropriate grouting methods and areas according to real-time data, effectively improves the safety and efficiency of the excavation process, reduces resource waste through precise grouting control, ensures the stability of the tunnel structure and the support effect, and further improves the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 is a flow chart of the method provided by the present invention;

[0072] Figure 2 It is a system module diagram provided by the present invention. DETAILED DESCRIPTION

[0073] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0074] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0075] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0076] Secondly, the present invention is described in detail in conjunction with schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the schematic diagrams are only examples and should not limit the scope of protection of the present invention.

[0077] Please see attached Figure 1 As shown, a tunneling method for a pre-support shield device is provided, comprising:

[0078] S1. Obtaining the excavation working state, determining whether the excavation working state meets the first preset requirement, and if not, obtaining excavation resistance data;

[0079] S2, obtaining excavation muck data, and obtaining excavation muck change information according to the excavation muck data;

[0080] S3, obtaining the excavation grouting method according to the excavation resistance data and the excavation debris change information;

[0081] S4, obtaining corresponding multiple excavation grouting areas according to the excavation grouting method;

[0082] S5, obtaining excavation trajectory data, and obtaining excavation trajectory deviation information according to the excavation trajectory data;

[0083] S6, obtaining a tunneling grouting focus area according to tunneling trajectory deviation information and multiple tunneling grouting areas;

[0084] S7. Obtain the excavation grouting strategy according to the excavation grouting method and the excavation grouting focus area, and perform excavation grouting according to the excavation grouting strategy.

[0085] As in the above steps S1 to S7, by judging whether the excavation working state meets the first preset requirements, whether the current excavation state is normal or not can be detected in real time. If it does not meet the preset requirements, the excavation resistance data is immediately obtained to ensure that adjustments can be made quickly when the excavation state is abnormal. By collecting the excavation slag data and combining the slag change information, the changes in the geological environment during the excavation process can be effectively reflected. For example, parameters such as the humidity, density, material and fluidity of the slag can indicate potential soil changes and environmental stability, and unfavorable geological conditions can be discovered in advance. Based on the excavation resistance data and the slag change information, the most suitable grouting method is automatically selected. For example, when the excavation resistance is too large and the slag fluidity is poor, a high-pressure grouting method may be preferentially selected to enhance the soil support capacity during the excavation process. According to the selected grouting method, multiple grouting areas are further divided so that grouting can be concentrated in the key areas of the excavation tunnel to avoid waste of resources and enhance the support effect. By collecting the excavation trajectory data and dividing it into By analyzing its deviation information, it is possible to control in real time whether the tunneling equipment has deviated from the ideal trajectory. According to the trajectory deviation and the positioning data of multiple grouting areas, the focus area of ​​grouting is obtained, which makes the grouting more directional and the support effect of the key area more significant, thereby reducing unnecessary grouting workload and achieving precise grouting. By combining the tunneling grouting method with the specific requirements of the focus area, a complete set of grouting strategies is generated and implemented. This precise strategy ensures the efficiency and safety of the grouting process, avoids structural safety problems caused by insufficient or excessive grouting, and makes the tunneling progress more controllable. It realizes the dynamic collection and analysis of various data (such as tunneling resistance, slag changes, trajectory deviation, etc.) during the tunneling process, enhances the intelligence level of shield equipment, selects appropriate grouting methods and areas according to real-time data, effectively improves the safety and efficiency of the tunneling process, reduces resource waste through precise grouting control, and ensures the stability and support effect of the tunnel structure, further improving the construction quality.

[0086] In a specific embodiment, the step of obtaining the excavation working state, determining whether the excavation working state meets the first preset requirement, and if not, obtaining the excavation resistance data includes:

[0087] S101, obtaining the excavation work status;

[0088] S102, obtaining the standard state of excavation work;

[0089] S103, determining whether the excavation work state belongs to the excavation work standard state;

[0090] If the excavation work status does not belong to the standard state of excavation work, the work is determined to be abnormal and the abnormal period is established;

[0091] S104. Acquire the excavation resistance data during the abnormal period.

[0092] As in the above steps S011 to S104, the current excavation working status and the pre-set standard excavation working status are obtained respectively. The standard status includes the ideal parameter range in the excavation process, such as speed, pressure, torque, etc., which serves as the basis for judging the normality of excavation. By comparing the matching degree between the current excavation status and the standard status, it can be determined whether the current excavation is proceeding normally. When the excavation working status does not belong to the standard status range, it indicates that there is a possible abnormal situation. At this time, the excavation status will be marked as "abnormal", and an abnormal period will be constructed. The excavation resistance data in the abnormal period will be collected. The abnormality of the excavation resistance data may indicate that different soil layer structures or other obstacles are encountered ahead. It can quickly determine the abnormal situation in the excavation process and collect the excavation resistance data in the abnormal period to avoid the interference of irrelevant data, thereby obtaining more accurate abnormal resistance information.

[0093] In a specific embodiment, the step of obtaining excavation muck data and obtaining excavation muck change information according to the excavation muck data includes:

[0094] S201, obtaining the time when the excavation work status does not meet the first preset requirement, and marking it as the end time;

[0095] S202, obtaining standard analysis time;

[0096] S203, obtaining the start time according to the standard analysis duration and end time;

[0097] S204, constructing a slag analysis period according to the start time and the end time;

[0098] S205, obtaining excavation waste soil data within the waste soil analysis period;

[0099] S206, acquiring a plurality of corresponding excavation muck vectors according to the excavation muck data;

[0100] S207, obtaining excavation muck change information according to a plurality of excavation muck vectors.

[0101] As in the above steps S201 to S207, the time point when the excavation work status does not meet the preset requirements is recorded and marked as the "end time", and a predefined "standard analysis duration" is obtained, that is, the length of the time period for evaluating the slag change. By subtracting the standard analysis duration, the "start time" is obtained from the "end time". The two determine a specific slag analysis period. By analyzing the slag data of this period, the slag situation before the abnormal state occurs can be traced back. The slag data within the analysis period is collected and converted into multiple slag vectors (such as density vectors, humidity vectors, particle distribution vectors, etc.), and the slag change information is calculated according to the numerical values ​​between the multiple excavation slag vectors. The calculation formula for the excavation slag change information is: , where Z represents the excavation muck change information, i represents the number of multiple excavation muck vectors, i=1,2,3…n, It is represented as the i-th excavation waste vector, which clarifies the changes in the physical properties of the waste, such as density increase, humidity change or particle distribution change, and can focus on the critical time period before and after the excavation anomaly occurs. The vectorization of waste data facilitates the detailed analysis of each waste feature and the rapid detection of abnormal vectors (such as a sharp increase in humidity or a sudden decrease in density), thereby identifying possible geological anomalies.

[0102] In a specific embodiment, the step of obtaining the excavation grouting method according to the excavation resistance data and the excavation muck change information includes:

[0103] S301, acquiring corresponding tunnel face resistance data and cutterhead surrounding resistance data according to the excavation resistance data;

[0104] S302, acquiring corresponding multiple tunnel face resistance values ​​according to the tunnel face resistance data;

[0105] S303, acquiring a plurality of corresponding cutter disc resistance values ​​according to the cutter disc resistance data;

[0106] S304, obtaining a tunneling grouting value according to a plurality of tunnel face resistance values, a plurality of cutterhead resistance values, and tunneling debris change information;

[0107] S305, obtaining a grouting table, wherein the grouting table includes a plurality of excavation grouting interval values ​​and an excavation grouting method corresponding to each excavation grouting interval value;

[0108] S306, obtaining a target excavation grouting interval value according to the excavation grouting value;

[0109] S307, obtaining the corresponding excavation grouting method from the grouting table according to the target excavation grouting value.

[0110] As in the above steps S301 to S307, based on the overall tunneling resistance data, the tunnel face resistance data and the resistance data around the cutterhead are extracted. By distinguishing the resistance at different positions, the tunneling pressure on different parts can be analyzed more carefully and more accurate data can be obtained. Multiple resistance values ​​are extracted from the tunnel face and the resistance data around the cutterhead respectively. These values ​​can reflect the pressure changes at different time points or in different areas, which are important bases for evaluating the tunneling environment. Combined with multiple tunnel face resistance values, multiple cutterhead resistance values ​​and tunneling muck change information, the "tunneling grouting value" required for the current environment is calculated. The calculation formula of the tunneling grouting value is: , where J represents the excavation grouting value, k represents the number of multiple face resistance values ​​and multiple cutterhead resistance values, k=1,2,3…u, Expressed as the kth tunnel face resistance value, It is expressed as the kth cutter head resistance value, and multiple excavation grouting interval values ​​and their corresponding grouting methods are obtained from the grouting table. The grouting table associates different interval values ​​with corresponding grouting strategies, and matches the most suitable "target excavation grouting interval value" according to the currently calculated excavation grouting value. The corresponding grouting method is found in the grouting table through the target grouting interval value, so as to determine the grouting strategy suitable for the current geological conditions, ensuring that the grouting method can make the best choice according to the actual resistance and geological changes, thereby enhancing the support effect and excavation efficiency.

[0111] In a specific embodiment, the step of obtaining a plurality of corresponding excavation grouting areas according to the excavation grouting method includes:

[0112] S401, obtaining a plurality of grouting method data, wherein each grouting method data includes a tunneling grouting comparison method and a plurality of corresponding tunneling grouting areas;

[0113] S402, obtaining grouting mode data having the same grouting comparison mode as the excavation grouting comparison mode, and marking it as excavation mode target data;

[0114] S403, acquiring corresponding multiple excavation grouting areas from the excavation method target data.

[0115] As in the above steps S401 to S403, multiple grouting method data are obtained, and each grouting method data includes a specific "excavation grouting comparison method" and several associated "excavation grouting areas". These grouting method data establish the association between the grouting method and the specific grouting area by adapting to different geological conditions and excavation requirements. The "excavation method target data" that meets the conditions is screened out through the "grouting comparison method" that meets the current excavation conditions, ensuring that the selection of the grouting method meets the current geological conditions, resistance conditions or other excavation requirements, and improving the accuracy and adaptability of the grouting area. From the screened excavation method target data, the corresponding multiple excavation grouting areas are extracted. The determination of multiple excavation grouting areas means that the key positions in the current excavation environment can be covered to ensure a comprehensive support effect.

[0116] In a specific embodiment, the step of obtaining the excavation trajectory data and obtaining the excavation trajectory deviation information according to the excavation trajectory data includes:

[0117] S501, obtaining excavation trajectory data;

[0118] S502, obtaining a plurality of corresponding actual coordinate points of the excavation trajectory according to the excavation trajectory data;

[0119] S503, obtaining excavation trajectory standard data, and obtaining a plurality of excavation trajectory standard coordinate points corresponding to a plurality of excavation trajectory actual coordinate points according to the excavation trajectory standard data;

[0120] S504, obtaining excavation trajectory deviation information according to a plurality of excavation trajectory actual coordinate points and a plurality of corresponding excavation trajectory standard coordinate points.

[0121] As in the above steps S501 to S504, the tunneling trajectory data is obtained, and a plurality of actual tunneling trajectory coordinate points are extracted. These coordinate points reflect the real-time recorded position of the shield tunneling machine during the tunneling process, and are the basic data for calculating the trajectory deviation. The standard data of the tunneling trajectory is obtained, and the standard trajectory coordinate points corresponding to the plurality of actual trajectory coordinate points are extracted. The standard trajectory data is generally given in the design stage, and reflects the ideal tunneling path, including information such as coordinates, direction and inclination, and is an important reference for measuring deviations. By comparing the actual coordinate points with the standard coordinate points, the tunneling trajectory deviation information is calculated. The calculation formula for the tunneling trajectory deviation information is: , where P represents the excavation trajectory deviation information, g represents the number of multiple excavation trajectory actual coordinate points and multiple excavation trajectory standard coordinate points, g=1,2,3…t, Represented as the actual X-axis coordinate point of the g-th tunneling trajectory, Represented as the actual Y-axis coordinate point of the g-th tunneling trajectory, Represented as the actual Z-axis coordinate point of the g-th tunneling trajectory, Represented as the standard X-axis coordinate point of the g-th tunneling trajectory, Represented as the standard Y-axis coordinate point of the g-th tunneling trajectory, It is expressed as the g-th standard Z-axis coordinate point of the tunneling trajectory to ensure that the degree of deviation of the tunneling machine position from the standard path is understood.

[0122] In a specific embodiment, the step of obtaining the excavation grouting focus area according to the excavation trajectory deviation information and multiple excavation grouting areas includes:

[0123] S601, obtaining multiple excavation area resistance values ​​corresponding to each excavation grouting area;

[0124] S602, obtaining a tunneling grouting emphasis value according to a plurality of tunneling area resistance values ​​corresponding to each tunneling grouting area and tunneling trajectory deviation information;

[0125] S603, obtaining a threshold value for excavation grouting emphasis;

[0126] S604, determining whether the excavation grouting emphasis value exceeds the excavation grouting emphasis threshold;

[0127] If the excavation grouting emphasis value exceeds the excavation grouting emphasis threshold, the excavation grouting area corresponding to the excavation grouting emphasis value exceeding the excavation grouting emphasis threshold will be marked as the excavation grouting emphasis area.

[0128] As in the above steps S601 to S604, multiple excavation area resistance values ​​of each excavation grouting area are obtained. The multiple excavation area resistance values ​​reflect the resistance encountered by the shield equipment when excavating in different areas. According to the resistance value of each excavation grouting area and the trajectory deviation information, the "excavation grouting emphasis value" of each grouting area is calculated. The calculation formula of the excavation grouting emphasis value is: , where R represents the excavation grouting emphasis value, P represents the excavation trajectory deviation information, and d represents the number of multiple excavation area resistance values ​​corresponding to each excavation grouting area, d=1,2,3…m, It is represented by the mth excavation area resistance value corresponding to each excavation grouting area. The deviation information of the excavation trajectory is used to identify the path deviation, and the regional resistance value is used to evaluate the excavation difficulty and the stability of the surrounding soil. By combining the influence of deviation and resistance, the emphasis value can quantify the priority of grouting needs, obtain the preset excavation grouting emphasis threshold, and judge whether each grouting emphasis value exceeds the threshold. The emphasis threshold is usually a safety value set according to geological conditions and support requirements. If the emphasis value of a grouting area exceeds the threshold, it means that the support demand of the area is more urgent. If the excavation grouting emphasis value exceeds the threshold, the grouting area will be marked as "excavation grouting emphasis area". This type of emphasis area will be given priority to grouting treatment for reinforcement and support.

[0129] In a specific embodiment, the step of obtaining a tunneling grouting strategy according to the tunneling grouting method and the tunneling grouting focus area, and performing tunneling grouting according to the tunneling grouting strategy includes:

[0130] S701, obtaining a strategy table, wherein the strategy table includes a plurality of grouting method strategy tables, and each grouting method strategy table includes excavation grouting strategies corresponding to a plurality of grouting emphasis area strategy sub-tables;

[0131] S702, obtaining a corresponding grouting method strategy table from the strategy table according to the excavation grouting method;

[0132] S703, obtaining a corresponding target grouting focus area strategy sub-table from the grouting method strategy table according to the excavation grouting focus area;

[0133] S704, obtaining the corresponding excavation grouting strategy according to the target grouting focus area strategy sub-table;

[0134] S705. Perform excavation grouting according to the excavation grouting strategy.

[0135] As in the above steps S701 to S705, a suitable grouting method and focus area strategy are selected from a preset strategy table. The strategy table contains strategy tables for a variety of excavation grouting methods. Under each method, a plurality of strategy sub-tables with focus areas are further refined, corresponding to the best grouting strategies under various working conditions. According to the current excavation grouting method, a strategy table that meets the method is extracted from the strategy table to ensure the matching degree between the grouting strategy and the excavation method, so that the selected strategy can effectively adapt to the requirements of the current construction environment. According to the identified grouting focus area, the corresponding "target grouting focus area strategy sub-table" is further screened out from the grouting method strategy table, and the excavation grouting strategy is obtained from the target grouting focus area strategy sub-table. According to the strategy, the grouting operation is specifically performed to ensure that the grouting distribution, grouting volume and grouting pressure match the actual excavation needs, which can ensure that the implementation of support more accurately meets the actual needs of the current excavation, and further improve the stability and safety of the excavation process.

[0136] Please see attached Figure 2 As shown, the present invention also provides a tunneling system for a pre-support shield machine, which is used in the tunneling method for the pre-support shield machine, comprising:

[0137] The excavation state module is used to obtain the excavation working state and determine whether the excavation working state meets the first preset requirement. If not, the excavation resistance data is obtained.

[0138] The excavation slag change module is used to obtain the excavation slag data and obtain the excavation slag change information according to the excavation slag data;

[0139] Grouting method module, used to obtain the excavation grouting method according to the excavation resistance data and excavation slag change information;

[0140] The grouting area module is used to obtain corresponding multiple excavation grouting areas according to the excavation grouting method;

[0141] A trajectory deviation module is used to obtain excavation trajectory data and obtain excavation trajectory deviation information according to the excavation trajectory data;

[0142] The grouting focus module is used to obtain the excavation grouting focus area according to the excavation trajectory deviation information and multiple excavation grouting areas;

[0143] The strategy module is used to obtain the excavation grouting strategy according to the excavation grouting method and the excavation grouting focus area, and perform excavation grouting according to the excavation grouting strategy.

[0144] As mentioned above, the excavation status module obtains the current excavation working status and determines whether it meets the preset working requirements. If the status is abnormal, the excavation resistance data is further collected to analyze the support needs. The slag change module collects excavation slag data and obtains slag change information during the excavation process. This information reflects the changes in geological conditions and can provide real-time excavation environment feedback to assist in determining the need to adjust the support strategy. The grouting method module comprehensively determines the appropriate grouting method based on the excavation resistance data and slag change information. By accurately matching the grouting method of the current working conditions, it provides an efficient and targeted support method for the excavation process to ensure the support effect and the rational use of resources. After the grouting method is determined, the grouting area module selects multiple suitable grouting areas according to the grouting method to ensure the rationality of grouting coverage. The trajectory deviation module obtains the excavation trajectory data. The excavation deviation value is calculated by comparing the actual coordinates of the trajectory with the standard coordinates in order to understand the precise situation of the excavation route. For the deviation caused by geological changes and other factors, timely feedback can be given to provide a reference for the selection of focus areas. According to the trajectory deviation data and the grouting area, the grouting focus module determines the focus area that needs to be grouted. The strategy module selects the best excavation grouting strategy according to the grouting method and the focus area, and performs grouting according to the strategy, so as to select the optimal grouting strategy to ensure scientific and efficient support during the entire excavation grouting process. It can comprehensively analyze the excavation status, slag changes, trajectory deviation and other information, effectively identify abnormal situations, and adjust the grouting focus area and grouting strategy in time, thereby ensuring the safety of shield construction. According to the changes in different geological conditions during the excavation process, the grouting method and strategy can be dynamically adjusted to achieve stable excavation support in complex environments.

[0145] And, a tunneling terminal of a pre-support shield machine, comprising:

[0146] one or more processors;

[0147] a storage device having one or more programs stored thereon;

[0148] When one or more programs are executed by one or more processors, the one or more processors implement the excavation method of the pre-support shield equipment.

[0149] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A tunneling method for a pre-support shield machine, characterized in that: include: Obtaining the excavation working state, determining whether the excavation working state meets the first preset requirement, and if not, obtaining excavation resistance data; Acquire excavation muck data, and acquire excavation muck change information based on the excavation muck data; Obtain the excavation grouting method based on the excavation resistance data and excavation debris change information; Acquire corresponding multiple excavation grouting areas according to the excavation grouting method; Acquire excavation trajectory data, and acquire excavation trajectory deviation information according to the excavation trajectory data; Obtain the excavation grouting focus area based on the excavation trajectory deviation information and multiple excavation grouting areas; Obtain the excavation grouting strategy according to the excavation grouting method and the excavation grouting focus area, and carry out excavation grouting according to the excavation grouting strategy; The step of obtaining the excavation working state and determining whether the excavation working state meets the first preset requirement, and if not, obtaining the excavation resistance data comprises: Get the excavation work status; Obtain the standard status of excavation work; Determine whether the excavation work status is within the standard excavation work status; If the excavation work status does not belong to the standard state of excavation work, the work is determined to be abnormal and the abnormal period is established; Obtaining excavation resistance data during abnormal periods; The steps of obtaining the excavation grouting method according to the excavation resistance data and the excavation slag change information include: Obtain corresponding tunnel face resistance data and cutterhead surrounding resistance data based on excavation resistance data; Acquire corresponding multiple tunnel face resistance values ​​according to the tunnel face resistance data; Acquire corresponding multiple cutter disc resistance values ​​according to the cutter disc resistance data; Obtaining the excavation grouting value according to multiple face resistance values, multiple cutterhead resistance values ​​and excavation debris change information; Obtaining a grouting table, wherein the grouting table includes a plurality of excavation grouting interval values ​​and an excavation grouting method corresponding to each excavation grouting interval value; Obtain the target excavation grouting interval value according to the excavation grouting value; Obtain the corresponding excavation grouting method from the grouting table according to the target excavation grouting value; The step of obtaining excavation trajectory data and obtaining excavation trajectory deviation information according to the excavation trajectory data comprises: Obtain excavation trajectory data; Obtaining a plurality of corresponding actual coordinate points of the excavation trajectory according to the excavation trajectory data; Acquire standard data of the excavation trajectory, and acquire multiple standard coordinate points of the excavation trajectory corresponding to the multiple actual coordinate points of the excavation trajectory according to the standard data of the excavation trajectory; The excavation trajectory deviation information is obtained according to a plurality of actual coordinate points of the excavation trajectory and a plurality of corresponding standard coordinate points of the excavation trajectory.

2. The excavation method of the pre-support shield equipment according to claim 1, characterized in that: The steps of obtaining excavation muck data and obtaining excavation muck change information according to the excavation muck data include: Obtain the time when the excavation work status is judged not to meet the first preset requirement, and mark it as the end time; Get the standard analysis duration; Get the start time based on the standard analysis duration and end time; Construct the soil analysis period based on the start time and end time; Obtain excavation waste soil data within the waste soil analysis period; Acquire a plurality of corresponding excavation muck vectors according to the excavation muck data; The excavation muck change information is obtained according to a plurality of excavation muck vectors.

3. The excavation method of the pre-support shield equipment according to claim 1, characterized in that: The step of obtaining a plurality of corresponding excavation grouting areas according to the excavation grouting method includes: Acquire multiple grouting method data, wherein each grouting method data includes a tunneling grouting comparison method and corresponding multiple tunneling grouting areas; Acquire grouting mode data whose grouting comparison mode is the same as the excavation grouting comparison mode, and mark it as excavation mode target data; The corresponding multiple excavation grouting areas are obtained from the excavation method target data.

4. The tunneling method of the pre-support shield equipment according to claim 1, characterized in that: The steps of obtaining the excavation grouting focus area according to the excavation trajectory deviation information and multiple excavation grouting areas include: Obtain multiple excavation area resistance values ​​corresponding to each excavation grouting area; Obtaining the excavation grouting emphasis value according to multiple excavation area resistance values ​​corresponding to each excavation grouting area and excavation trajectory deviation information; Get the excavation grouting emphasis threshold; Determine whether the excavation grouting emphasis value exceeds the excavation grouting emphasis threshold; If the excavation grouting emphasis value exceeds the excavation grouting emphasis threshold, the excavation grouting area corresponding to the excavation grouting emphasis value exceeding the excavation grouting emphasis threshold will be marked as the excavation grouting emphasis area.

5. The excavation method of the pre-support shield equipment according to claim 1, characterized in that: According to the excavation grouting method and the excavation grouting focus area, the excavation grouting strategy is obtained, and the steps of excavation grouting according to the excavation grouting strategy include: Obtaining a strategy table, wherein the strategy table includes a plurality of grouting method strategy tables, and each grouting method strategy table includes excavation grouting strategies corresponding to a plurality of grouting focus area strategy sub-tables; According to the excavation grouting method, a corresponding grouting method strategy table is obtained from the strategy table; According to the excavation grouting focus area, the corresponding target grouting focus area strategy sub-table is obtained from the grouting method strategy table; Obtain the corresponding excavation grouting strategy according to the target grouting focus area strategy sub-table; Excavation grouting is carried out according to the excavation grouting strategy.

6. A tunneling system for a pre-support shield machine, applied to the tunneling method for a pre-support shield machine as claimed in any one of claims 1 to 5, characterized in that: include: The excavation state module is used to obtain the excavation working state and determine whether the excavation working state meets the first preset requirement. If not, the excavation resistance data is obtained. The excavation slag change module is used to obtain the excavation slag data and obtain the excavation slag change information according to the excavation slag data; Grouting method module, used to obtain the excavation grouting method according to the excavation resistance data and excavation slag change information; The grouting area module is used to obtain corresponding multiple excavation grouting areas according to the excavation grouting method; A trajectory deviation module is used to obtain excavation trajectory data and obtain excavation trajectory deviation information according to the excavation trajectory data; The grouting focus module is used to obtain the excavation grouting focus area according to the excavation trajectory deviation information and multiple excavation grouting areas; The strategy module is used to obtain the excavation grouting strategy according to the excavation grouting method and the excavation grouting focus area, and perform excavation grouting according to the excavation grouting strategy.

7. A tunneling terminal of a pre-support shield machine, characterized in that: include: one or more processors; a storage device having one or more programs stored thereon; When one or more programs are executed by one or more processors, the one or more processors implement the excavation method of the pre-support shield equipment described in any one of claims 1 to 5.

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