Reverse slope water diversion method for plateau alpine region

Abstract

The invention relates to the technical field of tunnel construction, and particularly discloses a plateau alpine region reverse slope water diversion method which comprises the following steps: S1, setting a default water level range and default water pump setting of each water sump, the default water pump setting comprising default water pump quantity and default water pump power; s2, collecting liquid level data and temperature data in each water sump; s3, analyzing a liquid level change value of each water sump in a first preset time according to the liquid level data, judging whether the change value of each water sump is greater than a first liquid level threshold value or not, and skipping to S4 if the change value of each water sump is not greater than the first liquid level threshold value; s4, whether the temperature value of each water sump is lower than a first temperature threshold value or not is judged, and if the temperature value of each water sump is not lower than the first temperature threshold value, the step S5 is executed; if the temperature is lower than the first temperature threshold value, marking the water sump as a low-temperature water sump, and skipping to S6; s5, the default water pump setting is maintained; and S6, the power of a water pump corresponding to the low-temperature water sump is reduced, and the liquid level of the low-temperature water sump is increased. By the adoption of the technical scheme, all stages of pump stations can be effectively controlled, and the plateau alpine environment can be better adapted.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel construction, and particularly to a method for reverse drainage in high-altitude and cold regions. Background Art

[0002] In high-altitude and cold regions, there are situations such as groundwater, pore phreatic water, bedrock fissure water, and tectonic fissure water. When a tunnel is under construction in high-altitude and cold regions, after the tunnel is excavated, the underground water volume is large. If long-distance reverse drainage is required, the construction difficulty will increase greatly. Reverse drainage is also the key to the safe construction of the tunnel. A reasonable drainage system is an important guarantee for realizing the rapid construction of the tunnel, ensuring construction safety, and the physical and mental health of construction workers.

[0003] In the construction of long-distance reverse drainage, a fixed relay pumping station is usually set up to pump water step by step and finally discharge it outside the tunnel, that is: in the construction of reverse drainage in long tunnels, it is often impossible to pump water directly to the end with one pump, and it is necessary to adopt step-by-step relay of pumping stations to discharge the waste water in the tunnel outside the tunnel. However, in the high-altitude and cold environment, the seepage volume is large and the temperature is low. How to drain water quickly and prevent the water sump, etc. from freezing due to low temperature has become a problem to be solved.

[0004] Therefore, a method for reverse water diversion in high-altitude and cold regions is needed to effectively control each pumping station and better adapt to the high-altitude and cold environment. Summary of the Invention

[0005] The present invention provides a method for reverse water diversion in high-altitude and cold regions, which can effectively control each pumping station and better adapt to the high-altitude and cold environment.

[0006] In order to solve the above technical problems, the present application provides the following technical solutions:

[0007] The method for reverse water diversion in high-altitude and cold regions includes the following contents:

[0008] S1. Set the default water level range of each water sump, and set the default water pumps. The default water pump setting includes the default number of water pumps and the default power of the water pumps;

[0009] S2. Collect the liquid level data and temperature data in each water sump;

[0010] S3. Analyze the liquid level change value of each water sump within the first preset time according to the liquid level data, and judge whether the change value of each water sump is greater than the first liquid level threshold. If it is not greater than the first liquid level threshold, jump to S4;

[0011] S4. Judge whether the temperature value of each water sump is lower than the first temperature threshold. If it is not lower than the first temperature threshold, jump to S5; if it is lower than the first temperature threshold, mark it as a low-temperature water sump and jump to S6;

[0012] S5. Maintain the default water pump setting;

[0013] S6. Reduce the pump power corresponding to the low-temperature sump and increase the liquid level of the low-temperature sump.

[0014] Further, in step S3, if the change value of any sump is greater than the first liquid level threshold, mark it as a gushing water sump and jump to S7;

[0015] S7. Judge whether the temperature value of each sump above the gushing water sump is lower than the second temperature threshold. If it is not lower than the second temperature threshold, jump to S8; if the temperature value of a sump is lower than the second temperature threshold, jump to S9;

[0016] S8. If the change value of the gushing water sump is greater than the first liquid level threshold and less than or equal to the second liquid level threshold, increase the pump power of the gushing water sump and each sump above it at the same time; if the change value of the gushing water sump is greater than the second liquid level threshold, jump to S10;

[0017] S9. If the change value of the gushing water sump is greater than the first liquid level threshold and less than or equal to the second liquid level threshold, increase the pump power of the gushing water sump. After the liquid level height of the next-level sump is greater than the preset water level value, increase the pump power of the next-level sump, and the preset water level value is greater than the default water level range;

[0018] If the change value of the gushing water sump is greater than the second liquid level threshold, jump to S10;

[0019] S10. Increase the start-up quantity of the pumps of the gushing water sump and each sump above it at the same time and increase the pump power.

[0020] Further, in step S10, also obtain the arrival situation of the drainage team, judge whether the arrival rate is greater than the preset value. If it is greater than the preset value, increase the start-up quantity of the pumps of the gushing water sump and each sump above it at the same time and increase the pump power.

[0021] Further, in step S10, if the arrival rate is less than the preset value, first increase the pump power of the gushing water sump and each sump above it; obtain the positions of the drainage team members, calculate the distances between the members and each sump according to the positions of the members and the sump, sort the sumps from near to far according to the distances between the members and each sump, increase the power of the operating pumps of the gushing water sump and each sump above it in sequence according to the sorted order, and after delaying the second preset time, increase the start-up quantity of the pumps of the gushing water sump and each sump above it in sequence according to the sorted order.

[0022] Further, in step S3, also judge whether the change value of each sump is greater than the warning value. If it is greater than the warning value, generate a gushing water alarm message.

[0023] Further, in step S3, it is also determined whether the temperature value of each water sump is lower than the temperature warning value. If it is lower than the temperature warning value, a low-temperature alarm message is generated.

[0024] Further, the second temperature threshold is less than the first temperature threshold, and the second liquid level threshold is greater than the first liquid level threshold.

[0025] This solution is specially designed for the special environmental conditions in high-altitude and cold regions, taking into account the influence of low temperature on the drainage system. By collecting the liquid level data and temperature data of the water sump, the status of each water sump can be monitored in real time. Multiple preset thresholds and conditions are set, and the working state of the water pump can be automatically adjusted according to the change situation. For example, when the liquid level changes greatly, the number of working water pumps and the power can be increased; when the temperature is low, the water pump power can be reduced to increase the liquid level of the water sump and prevent icing.

[0026] Through the unified management of each pumping station by this method, the complexity of manual operation is reduced, and the efficiency of construction management is improved. At the same time, the automated monitoring and adjustment functions also reduce the professional requirements for operators and improve the reliability of the system.

[0027] In summary, the solution of this embodiment effectively solves the problem of long-distance reverse slope drainage in tunnel construction in high-altitude and cold regions by reasonably designing the drainage system and intelligent control method, and has the advantages of high efficiency, flexibility, safety and strong adaptability, significantly improving the safety of tunnel construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a flowchart of the first embodiment of the reverse slope water diversion method for high-altitude and cold regions. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following is a more detailed description through specific embodiments:

[0030] Embodiment 1

[0031] The existing reverse slope water diversion settings in high-altitude and cold regions usually include a clear water ditch, a sewage ditch, a fixed pumping station, a water pump, and a pipeline. The clear water ditch is opened on both sides of the construction tunnel, and the sewage ditch is opened beside the clear water ditch on one side of the construction tunnel; the construction tunnel includes a main tunnel and an inclined shaft. There are at least two fixed pumping stations, which are respectively used to converge the water flow of the clear water ditch and the sewage ditch. The fixed pumping station includes a chamber opened on the side of the construction tunnel. A sedimentation tank and a water sump are adjacent to the bottom of the chamber. Among them, the sedimentation tank is used to receive the water flow of the clear water ditch or the sewage ditch. An overflow channel is also opened between the sedimentation tank and the water sump. The water flow of the sedimentation tank flows to the water sump through the overflow channel. The water pump is located in the water sump, and the pipeline is connected to the water pump. The water pump is used to pump water from the water sump and then discharge it into the upper-level water sump through the pipeline until the water is pumped out from the last-level water sump and discharged outward.

[0032] The fixed pumping stations for collecting clean water and the fixed pumping stations for collecting sewage are independently controlled respectively. As Figure 1 shown, this embodiment also provides a method for reverse slope water diversion in high-altitude and cold regions. Taking the fixed pumping station for collecting sewage as an example, it includes the following steps:

[0033] S1. Set the default water level range of each water sump, and set the default pumps. The default pump settings include the default number of pumps and the default pump power. In this embodiment, the pumps are centrifugal pumps or submersible pumps. Each water sump is equipped with 2 working pumps as default pumps and 2 standby pumps of the same model, or each water sump is equipped with 4 working pumps as default pumps and 2 standby pumps of the same model. The specific settings are determined according to the actual situation.

[0034] For example, the normal water volume flowing through this pumping station is 2901 m 3 / d, and the estimated maximum water volume is 4351 m 3 / d. This pumping station is equipped with 2 working pumps and 1 standby pump.

[0035] When 2 pumps work simultaneously, the drainage capacity at the default power is Q = 80 * 2 * 24 = 3840 m 3 / d > 1.2 * 2901 = 3481.2 m 3 / d. When 3 pumps work simultaneously, the maximum drainage capacity at the default power is Q = 80 * 3 * 24 = 5760 m 3 / d > 1.2 * 4351 = 5221.2 m 3 / d, meeting the requirements.

[0036] S2. Collect the liquid level data and temperature data in each water sump;

[0037] S3. Analyze the liquid level change value of each water sump within the first preset time according to the liquid level data, and judge whether the change value of each water sump is greater than the first liquid level threshold. If it is not greater than the first liquid level threshold, jump to S4; if the change value of any water sump is greater than the first liquid level threshold, mark it as a gushing water sump and jump to S7; the first preset time is 1 - 5 minutes; the first liquid level threshold is set according to the size of the water sump, such as 20% of the water sump height.

[0038] S4. Judge whether the temperature value of each water sump is lower than the first temperature threshold. If it is not lower than the first temperature threshold, jump to S5; if it is lower than the first temperature threshold, mark it as a low-temperature water sump and jump to S6; the first temperature threshold is set according to the actual situation, such as 0 °C.

[0039] S5. Maintain the default pump settings;

[0040] S6. Reduce the pump power corresponding to the low-temperature water sump and increase the liquid level of the low-temperature water sump. In this embodiment, the pump power is reduced by 10%. By increasing the liquid level of the low-temperature water sump, the total water storage capacity is increased, the ratio of the area to the volume is reduced, the contact surface with the cold air is decreased, and the heat dissipation rate and the icing rate become slower.

[0041] S7. Determine whether the temperature values of the water sumps at all levels above the water sump for inflow are lower than the second temperature threshold. If not, jump to S8; if the temperature value of a water sump is lower than the second temperature threshold, jump to S9. The second temperature threshold is lower than the first temperature threshold. In this embodiment, the second temperature threshold is -2 to -5 °C.

[0042] S8. If the change value of the water sump for inflow is greater than the first liquid level threshold and less than or equal to the second liquid level threshold, increase the pump power of the water sump for inflow and all the water sumps above it simultaneously. If the change value of the water sump for inflow is greater than the second liquid level threshold, jump to S10. The second liquid level threshold is greater than the first liquid level threshold. In this embodiment, the pump power is increased to 100%, and the second liquid level threshold is 50% of the water sump height.

[0043] S9. If the change value of the water sump for inflow is greater than the first liquid level threshold and less than or equal to the second liquid level threshold, increase the pump power of the water sump for inflow. After the liquid level height of the next-level water sump is greater than the preset water level value, increase the pump power of the next-level water sump. The preset water level value is greater than the default water level range. If the temperature value of a water sump is lower than the second temperature threshold, after the liquid level height of the water sump is greater than the preset water level value, increase the pump power step by step, which can increase the total water storage capacity and slow down the icing rate.

[0044] If the change value of the water sump for inflow is greater than the second liquid level threshold, jump to S10;

[0045] S10. Increase the starting quantity of the pumps of the water sump for inflow and all the water sumps above it simultaneously and increase the pump power. Since the change value of the water sump for inflow is greater than the second liquid level threshold and the inflow volume is large, give priority to reducing the water volume in each water sump to accommodate more inflow water and improve the drainage efficiency.

[0046] The water diversion method of the fixed pump station for converging clear water is the same.

[0047] The solution of this embodiment can monitor the status of each water sump in real time by collecting the liquid level data and temperature data of the water sumps. This solution is especially designed for the special environmental conditions in high-altitude and cold regions, taking into account the influence of low temperature on the drainage system, setting multiple preset thresholds and conditions, and can automatically adjust the working state of the pumps according to the change situation. For example, when the liquid level changes greatly, the working quantity and power of the pumps can be increased; when the temperature is low, the pump power can be reduced to increase the liquid level of the water sump and prevent icing.

[0048] Through the unified management of each pumping station by this method, the complexity of manual operation is reduced, and the efficiency of construction management is improved. At the same time, the automated monitoring and adjustment functions also reduce the professional requirements for operators and improve the reliability of the system.

[0049] In summary, the solution of this embodiment effectively solves the problem of long-distance reverse slope drainage in tunnel construction in plateau and alpine regions by reasonably designing the drainage system and intelligent control method, and has the advantages of high efficiency, flexibility, safety and strong adaptability, significantly improving the safety of tunnel construction.

[0050] Embodiment Two

[0051] The difference between this embodiment and Embodiment One is that in step S10 of this embodiment, the arrival situation of the drainage team is also obtained, and it is judged whether the arrival rate is greater than a preset value (in this embodiment, the preset value is 90%). If so, the number of started pumps of the surge water sump and the water pumps of the upper-level water sumps is increased at the same time, and the pump power is increased;

[0052] If not, first increase the pump power of the surge water sump and the water pumps of the upper-level water sumps; obtain the positions of the drainage team members, calculate the distances between the members and each water sump according to the positions of the members and the water sumps, sort the water sumps from near to far according to the distances between the members and each water sump, and sequentially increase the power of the operating pumps of the surge water sump and the water pumps of the upper-level water sumps in the sorted order. After delaying for a second preset time (in this embodiment, the second preset time is 1 - 5 minutes), sequentially increase the number of started pumps of the surge water sump and the water pumps of the upper-level water sumps in the sorted order. In this embodiment, the drainage team members need to wear safety helmets with WUB positioning function to collect positions in real time, upload them to the personnel management system in the background, and then obtain the arrival situation of the drainage team and the positions of the drainage team members from the personnel management system.

[0053] By obtaining the arrival situation of the drainage team and the positions of the members in real time in this embodiment, the solution can optimize the pump start sequence and power adjustment strategy according to the distribution of on-site personnel.

[0054] When the arrival rate of the drainage team is lower than the preset value, the system will first increase the pump power to ensure the drainage effect and then increase the number of pumps later. This avoids simultaneously increasing the number of pumps and power, which may suddenly increase the circuit load and cause failures.

[0055] Sort according to the distances between the drainage team members and each water sump, and adjust the pump power and the number of starts in the order from near to far. If a failure occurs, personnel can reach the site for repair as soon as possible to shorten the downtime caused by the failure.

[0056] Embodiment Three

[0057] The difference between this embodiment and Embodiment 2 is that in step S3 of this embodiment, it is also determined whether the change value of each water sump is greater than the warning value. If it is greater than the warning value, a water inrush alarm message is generated. It is also determined whether the temperature value of each water sump is lower than the temperature warning value. If it is lower than the temperature warning value, a low-temperature alarm message is generated. In this embodiment, the warning value is 80% of the water sump height, and the temperature warning value is -10°C.

[0058] After generating the water inrush alarm and low-temperature alarm messages, the system can quickly notify relevant personnel to ensure that they can respond and handle emergencies promptly, which helps to take effective measures in the shortest time to reduce risks and losses.

[0059] Embodiment 4

[0060] The difference between this embodiment and Embodiment 2 is that in step S10 of this embodiment, if the attendance rate is greater than the preset value, the positions of the drainage team members are obtained in real time, and it is determined whether the moving directions of all drainage team members are the same according to the change of the positions. If they are not the same, it is processed as if the attendance rate is not greater than the preset value;

[0061] If the moving directions are the same, it is determined whether the moving direction is the heading face. If it is not the heading face, it is processed as if the attendance rate is not greater than the preset value; if it is the heading face, it is determined whether the temporary water pump at the heading face is started. If it is started, the number of started water pumps in the inrush water sump and the water sumps passed by the members is increased, and the water pump power is increased until the members reach the heading face;

[0062] If the temporary water pump at the heading face is not started, the average moving speed of all members is calculated, and the members with a moving speed higher than 20% of the average speed are marked as low-priority members. The number of started water pumps in the inrush water sump and the water sumps passed by the other members except the low-priority members is increased, and the water pump power is increased.

[0063] During a large water inrush during construction, when the water volume exceeds the capacity of the pumping station, the downhill heading face section is used as a temporary water sump, and a temporary level is set for drainage. In the solution of this embodiment, the moving direction is the heading face direction, indicating that the collective is going to the heading face direction for inspection or problem handling. The start of the temporary water pump at the heading face indicates a large water inrush. The number of started water pumps in the water sumps passed by the members is increased, and the water pump power is increased. If there are problems, the members can handle them quickly.

[0064] If the temporary water pump at the heading face is not started and there are members with a speed 20% higher than the average speed, it indicates that this member has a special task and needs to quickly reach the destination for handling. Reducing the priority of the water sumps passed by it can avoid delaying its main task due to handling water sump problems.

[0065] The above are only embodiments of the present invention. The invention is not limited to the fields involved in this embodiment. Common knowledge such as the specific structures and characteristics known in the art is not described in detail herein. Those of ordinary skill in the art know all the common general technical knowledge in the technical field to which the invention pertains before the filing date or the priority date, are able to learn all the existing technologies in this field, and have the ability to apply the conventional experimental means before this date. Those of ordinary skill in the art can, under the inspiration given in this application, combine their own abilities to complete and implement this solution. Some typical well-known structures or well-known methods should not become obstacles for those of ordinary skill in the art to implement this application. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can also be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A reverse slope water diversion method for high altitude and cold regions, characterized in that: It includes the following: S1. Set the default water level range of each water tank and the default water pump settings, the default water pump settings include the default water pump quantity and the default water pump power; S2, collecting liquid level data and temperature data in each water tank; S3, analyzing the liquid level change value of each water tank within the first preset time according to the liquid level data, and judging whether the change value of each water tank is greater than the first liquid level threshold value, if it is not greater than the first liquid level threshold value, jumping to S4; S4, judging whether the temperature value of each water tank is lower than the first temperature threshold value, if it is not lower than the first temperature threshold value, jumping to S5; If it is lower than the first temperature threshold, it is marked as a low-temperature water tank and the process jumps to S6; S5, maintain the default water pump settings; S6. Reduce the water pump power corresponding to the low-temperature water tank to increase the liquid level of the low-temperature water tank.

2. The reverse slope water diversion method in high altitude and cold regions according to claim 1 is characterized by: In the step S3, if the change value of any water tank is greater than the first liquid level threshold, it is marked as a flooding water tank, and the process jumps to S7; S7, judging whether the temperature values ​​of the water tanks at all levels above the water tank are lower than the second temperature threshold value, if not lower than the second temperature threshold value, jumping to S8; if the temperature value of any water tank is lower than the second temperature threshold value, jumping to S9; S8, if the change value of the gushing water tank is greater than the first liquid level threshold and less than or equal to the second liquid level threshold, simultaneously increase the pump power of the gushing water tank and the water tanks at all levels above; if the change value of the gushing water tank is greater than the second liquid level threshold, jump to S10; S9. If the change value of the water gushing tank is greater than the first liquid level threshold and less than or equal to the second liquid level threshold, increase the water pump power of the water gushing tank, and after the liquid level height of the next-level water tank is greater than the preset water level value, increase the water pump power of the next-level water tank, and the preset water level value is greater than the default water level range; If the change value of the water inflow tank is greater than the second liquid level threshold, jump to S10; S10. Simultaneously increase the number of water pumps started in the water gushing tank and the water tanks at all levels above it to improve the water pump power.

3. The reverse slope water diversion method in high altitude and cold regions according to claim 2 is characterized by: In step S10, the attendance status of the drainage team is also obtained to determine whether the attendance rate is greater than a preset value. If it is greater than the preset value, the number of pumps started in the water inflow tank and the water tanks at all levels above is increased to improve the pump power.

4. The reverse slope water diversion method in high altitude and cold regions according to claim 3 is characterized by: In step S10, if the attendance rate is less than a preset value, first increase the pump power of the water gushing tank and the water tanks at all levels above it; obtain the position of the drainage team members, calculate the distance between the members and the water tanks according to the positions of the members and the water tanks, sort the water tanks from near to far according to the distance between the members and the water tanks, and increase the power of the running water pumps of the water gushing tank and the water tanks at all levels above it in the order of sorting; after a delay of a second preset time, increase the number of water pumps started in the water gushing tank and the water tanks at all levels above it in the order of sorting.

5. The reverse slope water diversion method in high altitude and cold regions according to claim 4 is characterized by: In the step S3, it is also determined whether the change value of each water tank is greater than the warning value. If it is greater than the warning value, a water inrush alarm message is generated.

6. The reverse slope water diversion method in high altitude and cold regions according to claim 5 is characterized by: In step S3, it is also determined whether the temperature value of each water tank is lower than the temperature warning value. If it is lower than the temperature warning value, a low temperature alarm message is generated.

7. The reverse slope water diversion method in high altitude and cold regions according to claim 6 is characterized by: The second temperature threshold is lower than the first temperature threshold, and the second liquid level threshold is higher than the first liquid level threshold.

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