Construction response method based on water enrichment identification result of drilling construction rock mass

Abstract

This invention discloses a construction response method based on the water-bearing capacity assessment results of rock masses during drilling operations. First, the water-bearing capacity assessment results of the corresponding drilling sections are obtained. Then, based on these results, a matching relationship is established between construction response strategies corresponding to different water-bearing capacity levels. Finally, based on the matched construction response strategies, drilling parameters are dynamically adjusted, and construction measures corresponding to the current water-bearing capacity level of the rock mass are executed. This application directly converts the rock mass water-bearing capacity assessment results into corresponding construction response measures, eliminating manual experience-based judgment and intermediate decision-making processes. This significantly improves the timeliness and accuracy of the construction response, achieving dynamic control of water hazard risks throughout the drilling process and effectively reducing the probability of safety accidents such as water inrush, water surge, and borehole collapse. Furthermore, this invention reduces reliance on the experience of on-site personnel through standardized strategy matching and process adjustments, facilitating on-site implementation and operation.

Description

Technical Field

[0001] This invention relates to the field of underground engineering construction and water hazard prevention technology. Specifically, it relates to a construction response method based on the results of drilling operations to determine the water-bearing properties of the rock mass. Background Technology

[0002] In underground engineering construction, drilling operations are often used for advance exploration, construction verification, or auxiliary construction. Due to factors such as the complexity of geological structures and uneven distribution of groundwater, drilling operations are prone to encountering water-rich strata, which can lead to safety risks such as water inrush, water surge, and borehole collapse.

[0003] Currently, the identification and response to water-bearing conditions in drilling primarily rely on the experience of on-site personnel. Personnel typically make a rough assessment of the water-bearing capacity by observing water flow from the borehole and combining it with their personal experience, or by relying solely on abnormal changes in single drilling parameters such as drilling speed, torque, and drilling pressure. Based on this assessment, they subjectively decide whether to continue drilling, strengthen monitoring, or implement drainage or grouting measures. However, this traditional assessment and response model has significant drawbacks: First, the water-bearing assessment results are difficult to translate into timely and accurate construction decisions; second, construction response measures are highly dependent on human experience, with significant differences in judgment among different personnel, lacking a systematic, standardized, and procedural response system, resulting in insufficient operational standardization; third, when the water-bearing capacity of the formation changes rapidly or there is a sudden water inrush, there is a significant lag in human judgment and instruction issuance, making it difficult to take timely and effective control measures, which can easily induce water-related accidents; fourth, response strategies for different engineering geological conditions and different construction stages lack universality and reusability, making it difficult to quickly promote and apply them under similar geological conditions, resulting in low overall construction safety and controllability.

[0004] Therefore, in order to effectively solve the problems of inaccurate identification, delayed decision-making, reliance on experience, and poor adaptability of traditional technologies, it is urgent to provide a construction method that can effectively link the rock mass water-bearing identification results with construction response measures, so as to achieve dynamic control of water hazard risks during drilling operations. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to provide a construction method that can efficiently link and control the real-time identification results of water-bearing properties of rock mass with construction response measures in a closed loop, so as to realize dynamic monitoring, intelligent identification and rapid handling of water hazard risks throughout the drilling construction process, and improve the safety, standardization level and risk prevention and control capabilities of underground engineering drilling construction.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] The construction response method based on the water-bearing properties of the rock mass identified during drilling includes the following steps:

[0008] Step P1: Obtain the water-bearing properties of the rock mass in the corresponding drilling section during the drilling process;

[0009] Step P2: Based on the rock mass water-bearing property identification results, establish a matching relationship between construction response strategies corresponding to different water-bearing property levels;

[0010] Step P3: Based on the matched construction response strategy, dynamically adjust the drilling construction parameters and implement construction measures corresponding to the current water-rich grade of the rock mass.

[0011] The above-mentioned construction response method based on the water-bearing properties of rock mass in drilling construction, in step P1, the specific process of obtaining the water-bearing properties of rock mass is as follows: during the drilling construction, multi-source information is continuously collected during the drilling process to identify the water-bearing properties of the rock mass in the drilling section and obtain the corresponding water-bearing properties of rock mass.

[0012] The multi-source information includes drilling parameter variation characteristics, in-hole water return status, water volume variation and water inflow characteristics, cuttings characteristics, and implemented logging, geophysical exploration, or other auxiliary detection results. Among them, the cuttings characteristics include the water content of the cuttings and the variation of the cuttings particle size and return status.

[0013] The rock mass water-bearing capacity identification result is obtained by comprehensively identifying one or more of the multi-source information.

[0014] In the above-mentioned construction response method based on the water-bearing properties of the rock mass identified during drilling, step P1 includes water-bearing property identification results, which include two categories: weak water-bearing property and strong water-bearing property, providing a basis for subsequent construction response.

[0015] In the above-mentioned construction response method based on the water-bearing properties of the rock mass during drilling, step P2 includes drilling parameter adjustment strategies, drilling process conversion strategies, advanced detection or auxiliary exploration strategies, and grouting or water-stopping treatment strategies corresponding to strong water-bearing properties.

[0016] In the above construction response method based on the water-bearing properties of the rock mass during drilling, the drilling parameters in step P3 include drilling pressure, rotation speed, and drilling speed. Drilling pressure adjustment is used to reduce disturbance and prevent water inrush, rotation speed adjustment is used to improve controllability, and drilling speed adjustment is used to control the advance rhythm.

[0017] In formations with high water content, the drilling pressure should be 40-150 kN, the rotation speed should be 50-80 r / min, and the drilling speed should be less than 6 m / h; in formations with low water content, the drilling pressure should be 150-200 kN, the rotation speed should be 80-120 r / min, and the drilling speed should be greater than 6 m / h.

[0018] In the above-mentioned construction response method based on the water-bearing properties of the rock mass identified during drilling, step P3 includes preventive construction measures and targeted treatment measures.

[0019] When the identification results indicate that the drilling section or the rock mass ahead has strong water-rich characteristics, after the borehole advances to the predetermined section, segmented grouting construction is carried out on the corresponding borehole section. By injecting grout into the rock mass fissures or pores, the permeability of the rock mass is reduced, the potential water-rich channels are weakened, and stable surrounding rock conditions are provided for subsequent drilling or tunnel construction.

[0020] The above-mentioned construction response method based on the water-bearing properties of the rock mass during drilling can, when local water inrush or borehole instability occurs during drilling, implement local sealing or surrounding rock reinforcement construction on the abnormal parts according to the construction response strategy, so as to quickly control the local high-risk points and avoid further development of water-bearing properties that could lead to construction safety accidents.

[0021] The above-mentioned construction response method based on the water-bearing properties of the rock mass during drilling, while implementing the construction measures, adjusts the drilling rhythm and construction procedures according to the construction response strategy, so that the drilling process is adapted to the water-bearing properties of the rock mass and its changing trends, thereby reducing construction risks and improving overall construction safety.

[0022] The adjustments to the drilling schedule include changing from normal continuous drilling to a phased suspension of drilling; the adjustments to the drilling procedures include adjusting the order of drilling and grouting and switching the continuous drilling procedure to a step-by-step procedure of drilling-treatment-re-drilling.

[0023] The above-mentioned construction response method based on the water-bearing properties of the rock mass during drilling collects construction feedback information in real time during the implementation of construction response measures, and corrects and optimizes the construction response strategy based on the construction feedback information.

[0024] The above-mentioned construction response method based on the water-bearing properties of the rock mass during drilling includes construction feedback information such as changes in drilling parameters, changes in backwater status, and grouting construction effects.

[0025] The technical solution of the present invention achieves the following beneficial technical effects:

[0026] 1. This application can directly transform the results of rock mass water-bearing identification into standardized and executable construction response measures, eliminating the need for manual analysis, experience-based judgment, and instruction transmission, significantly shortening the construction decision-making time, greatly improving the timeliness and accuracy of construction response, and effectively avoiding safety hazards caused by delayed response.

[0027] 2. This application achieves real-time identification, rapid response and closed-loop control of water hazard risks throughout the drilling process by dynamically linking water abundance level with construction parameters and construction measures. It can promptly suppress the further development of risks such as water inrush, water surge and borehole collapse, and greatly improve the safety and stability of underground engineering drilling operations.

[0028] 3. This application does not limit the specific identification method of water-bearing properties of rock masses. It is compatible with a variety of existing and improved water-bearing detection, identification and judgment methods, and has strong compatibility and versatility. It can be applied to different geological conditions, different engineering types and different construction scenarios, and has a wide range of applications and high promotion value.

[0029] 4. This invention constructs a complete and clear construction process and logical system. By establishing a matching relationship between water-bearing capacity level and construction response strategy, it achieves standardized construction decision-making and standardized operation process, reduces reliance on the experience of on-site personnel, facilitates understanding, execution and implementation by on-site construction personnel, and is conducive to large-scale promotion and application in similar underground projects. Attached Figure Description

[0030] Figure 1 This is a flowchart of the construction response method based on the water-bearing properties of rock mass identified during drilling operations, as per the present invention.

[0031] Figure 2 This is a schematic diagram of the drilling operation for the construction response method based on the water-bearing properties of the rock mass identified during drilling, as described in this invention. Detailed Implementation

[0032] This embodiment discloses a construction response method based on the water-bearing property identification results of rock masses during drilling operations, such as... Figure 1 and Figure 2 As shown, it includes the following steps:

[0033] Step P1: Obtain the water-bearing capacity assessment results of the corresponding drilling sections during the drilling process. Specifically, during the drilling process, the borehole is divided into several drilling sections along the drilling direction, and water-bearing capacity assessment is performed on each drilling section to obtain the water-bearing capacity assessment results of the rock mass. Further, the specific process for obtaining the water-bearing capacity assessment results of the rock mass is as follows: During the drilling process, multi-source information is continuously collected to assess the water-bearing capacity of the rock mass in the drilling section and obtain the corresponding water-bearing capacity assessment results.

[0034] The multi-source information includes drilling parameter variation characteristics, borehole water return status, water volume variation and inflow characteristics, cuttings characteristics, and results of logging, geophysical exploration, or other auxiliary detection. The cuttings characteristics include cuttings water content, cuttings particle size variation, and return status. The rock mass water-bearing identification result is obtained by comprehensively identifying one or more of the multi-source information.

[0035] The rock mass water-bearing property identification results include water-bearing property level information, which includes two levels: weak water-bearing property and strong water-bearing property, providing a basis for subsequent construction response.

[0036] Step P2: Based on the rock mass water-bearing characteristics assessment results, establish a matching relationship between construction response strategies corresponding to different water-bearing levels. This relationship guides the subsequent construction process in the current drilling section and the adjustment of construction parameters and selection of construction methods for subsequent boreholes within the same construction stage. Specifically, the construction response strategies include drilling parameter adjustment strategies, drilling process conversion strategies, advanced detection or auxiliary exploration strategies, and grouting or water-stopping treatment strategies corresponding to high water-bearing conditions. Through the matching of these construction response strategies, the drilling process can pre-adjust and dynamically control the construction behavior in sections not yet drilled based on the revealed water-bearing characteristics of the rock mass, thereby reducing the risk of water inrush and improving the safety and continuity of drilling operations.

[0037] Step P3: Based on the matched construction response strategy, dynamically adjust the drilling construction parameters and implement construction measures corresponding to the current water-rich grade of the rock mass.

[0038] Specifically, the drilling parameters include drilling pressure, rotation speed and drilling speed, wherein drilling pressure adjustment is used to reduce disturbance and prevent water inrush, rotation speed adjustment is used to improve controllability, and drilling speed adjustment is used to control the advance rhythm.

[0039] As shown in Table 1, in formations with strong water-bearing properties, the drilling pressure is 40-150 kN, the rotation speed is 50-80 r / min, and the drilling speed is less than 6 m / h; in formations with weak water-bearing properties, the drilling pressure is 150-200 kN, the rotation speed is 80-120 r / min, and the drilling speed is greater than 6 m / h.

[0040] Table 1

[0041]

[0042] The construction measures include preventive construction measures and targeted treatment measures; Table 2 shows the correspondence between the water-bearing capacity of the rock mass and the corresponding construction strategies. When the water-bearing capacity is weak, the water volume is small and changes slowly. At this time, it is sufficient to adjust the parameters of conventional drilling. When the water-bearing capacity is strong, the water volume increases and changes significantly. At this time, in addition to parameter control, process adjustments and corresponding treatment measures should be added.

[0043] Table 2

[0044]

[0045] The specific construction measures include:

[0046] (1) Implementation of segmented grouting construction

[0047] When the identification results indicate that the drilling section or the rock mass ahead has strong water-bearing characteristics, after the borehole advances to the predetermined section, segmented grouting is carried out in the corresponding borehole section according to the construction response strategy described above. By injecting grout into the rock mass fissures or pores, the permeability of the rock mass is reduced, potential water-bearing channels are weakened, and stable surrounding rock geological conditions are provided for subsequent drilling or tunnel construction. The segmented grouting is a preventive construction measure based on the water-bearing identification results, and the grouting section range and timing are determined according to the revealed spatial distribution characteristics of water-bearing properties.

[0048] (2) Implementation of local sealing or surrounding rock reinforcement construction

[0049] When localized increased water inflow, borehole instability, or other abnormal conditions occur during drilling operations, localized sealing or surrounding rock reinforcement is implemented at the abnormal locations according to the construction response strategy. This aims to quickly control high-risk areas and prevent further development of water abundance or the emergence of construction safety risks. The localized sealing or surrounding rock reinforcement is a targeted treatment measure used to supplement localized abnormal areas that were not fully covered by segmented grouting.

[0050] (3) Adjustment of construction rhythm and construction procedures

[0051] While implementing the aforementioned construction measures, the drilling pace and procedures are adjusted according to the construction response strategy to adapt the drilling process to the water-rich characteristics and changing trends of the rock mass, thereby reducing construction risks and improving overall construction safety.

[0052] The adjustments to the drilling schedule include changing from normal continuous drilling to a phased suspension of drilling; the adjustments to the drilling procedures include adjusting the order of drilling and grouting and switching the continuous drilling procedure to a step-by-step procedure of drilling-treatment-re-drilling.

[0053] Step P4: Construction Feedback Collection and Corresponding Corrections

[0054] During the implementation of construction response measures, construction feedback information is collected in real time, and the construction response strategy is modified and optimized based on this feedback information. The construction feedback information includes changes in drilling parameters, changes in backwater status, and grouting construction effects.

[0055] This application directly transforms the results of rock mass water-bearing assessment into corresponding construction response measures, eliminating manual experience-based judgment and intermediate decision-making processes. This significantly improves the timeliness and accuracy of construction response, enabling rapid response to changes in formation water-bearing properties and achieving dynamic control of water hazard risks throughout the drilling process. It effectively reduces the probability of safety accidents such as water inrush, water surge, and borehole collapse. Furthermore, this invention does not limit the specific methods used for water-bearing assessment, making it adaptable to various geological conditions and engineering scenarios, exhibiting wide applicability and strong versatility. In addition, the construction process of this invention is clear and logically complete. Through standardized strategy matching and process adjustments, it reduces reliance on the experience of on-site personnel, facilitating on-site implementation and operation. This promotes its widespread application in various underground engineering drilling operations, comprehensively improving the safety, standardization, and controllability of drilling operations.

[0056] The above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A method for identifying the response of drilling construction based on the water abundance of the rock mass, characterized in that, Includes the following steps: Step P1: Obtain the water-bearing properties of the rock mass in the corresponding drilling section during the drilling process; Step P2: Based on the rock mass water-bearing property identification results, establish a matching relationship between construction response strategies corresponding to different water-bearing property levels; Step P3: Based on the matched construction response strategy, dynamically adjust the drilling construction parameters and implement construction measures corresponding to the current water-rich grade of the rock mass.

2. The method according to claim 1, wherein the method is characterized by, In step P1, the specific process of obtaining the water-bearing property identification results of the rock mass is as follows: during the drilling operation, multi-source information is continuously collected during the drilling process to identify the water-bearing property of the rock mass in the drilling section and obtain the corresponding water-bearing property identification results of the rock mass. The multi-source information includes drilling parameter variation characteristics, in-hole water return status, water volume variation and water inflow characteristics, cuttings characteristics, and implemented logging, geophysical exploration, or other auxiliary detection results. Among them, the cuttings characteristics include the water content of the cuttings and the variation of the cuttings particle size and return status. The rock mass water-bearing capacity identification result is obtained by comprehensively identifying one or more of the multi-source information.

3. The method according to claim 2, wherein the method is characterized by, In step P1, the water-bearing property identification result of the rock mass includes water-bearing property level information, which includes two levels: weak water-bearing property and strong water-bearing property, providing a basis for identification for subsequent construction response.

4. The method according to claim 1, wherein the method is characterized by, In step P2, the construction response strategy includes drilling parameter adjustment strategy, drilling process conversion strategy, advanced detection or auxiliary exploration strategy, and grouting or water-stopping treatment strategy when the water content is high.

5. The method according to claim 1, wherein the method is characterized by, In step P3, the drilling parameters include drilling pressure, rotation speed and drilling speed. Drilling pressure adjustment is used to reduce disturbance and prevent water inrush, rotation speed adjustment is used to improve controllability, and drilling speed adjustment is used to control the advance rhythm. In formations with high water content, the drilling pressure should be 40-150 kN, the rotation speed should be 50-80 r / min, and the drilling speed should be less than 6 m / h; in formations with low water content, the drilling pressure should be 150-200 kN, the rotation speed should be 80-120 r / min, and the drilling speed should be greater than 6 m / h.

6. The method according to claim 5, wherein the method is characterized by, In step P3, the construction measures include preventive construction measures and targeted treatment measures; When the identification results indicate that the drilling section or the rock mass ahead has strong water-rich characteristics, after the borehole advances to the predetermined section, segmented grouting construction is carried out on the corresponding borehole section. By injecting grout into the rock mass fissures or pores, the permeability of the rock mass is reduced, the potential water-rich channels are weakened, and stable surrounding rock conditions are provided for subsequent drilling or tunnel construction.

7. The method according to claim 5, wherein the method is characterized by, When localized water inrush or borehole instability occurs during drilling operations, localized sealing or surrounding rock reinforcement should be carried out at the abnormal locations according to the construction response strategy to quickly control the local high-risk points and prevent further development of water-rich conditions that could lead to construction safety accidents.

8. The construction response method based on the water-bearing property identification results of drilling construction rock mass according to claim 5, characterized in that, While implementing the aforementioned construction measures, the drilling pace and procedures are adjusted according to the construction response strategy to adapt the drilling process to the water-rich characteristics and changing trends of the rock mass, thereby reducing construction risks and improving overall construction safety. The adjustments to the drilling schedule include changing from normal continuous drilling to a phased suspension of drilling; the adjustments to the drilling procedures include adjusting the order of drilling and grouting and switching the continuous drilling procedure to a step-by-step procedure of drilling-treatment-re-drilling.

9. The construction response method based on the water-bearing nature identification result of drilling construction rock mass according to any one of claims 1-8, characterized in that, During the implementation of construction response measures, construction feedback information is collected in real time, and the construction response strategy is modified and optimized based on the construction feedback information.

10. The construction response method based on the water-bearing property identification results of drilling construction rock mass according to claim 9, characterized in that, The construction feedback information includes changes in drilling parameters, changes in backflow status, and grouting construction effects.

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