Method for resolving water inrush flow path with time-varying water inflow of mine water inrush point

Abstract

The invention relates to a method for resolving a water inrush flow path of water inflow of a mine water inrush point changing along with time, a water inrush process is divided into a plurality of time periods by taking one hour as a unit, the water inflow at the beginning moment of each time period serves as the water inflow of each time period, the time-varying water inrush problem is converted into the quasi-time constant water inrush problem, and the time-varying water inrush flow path of the mine water inrush point is calculated according to the time-varying water inrush flow path. Establishing a corresponding relation between the quasi time and the actual time; calculating to obtain a water inrush path by adopting a constant water inrush mine laneway water inrush path calculation method; and converting each moment in the water inrush path into actual time to obtain the water inrush path under the actual time. The mine water inrush path determined by the method is closer to the actual water inrush flow spreading condition, and the resolving result is beneficial to providing a theoretical basis for the escape of miners and the design of a ground emergency rescue scheme.

Description

Technical Field

[0001] The present application relates to the field of mine safety production. Specifically, it relates to a method for calculating the water inrush flow path of a mine water inrush point with time-varying water inrush volume. Background Art

[0002] Mine water disasters are one of the typical accidents and disasters in mine exploitation. Mine water disasters will cause serious physical and mental pain to workers and huge economic losses to mining enterprises. Therefore, scholars have conducted research on aspects such as mine water inrush mechanism, water inrush source judgment, water disaster situation assessment, and water disaster risk assessment to prevent and control water disasters. However, due to many objective reasons such as the complexity of hydrogeological conditions, the diversity of actual water disaster formation, the limitations of human understanding of water disaster risks, and the uncertainty of personnel working conditions, coal mine water disaster accidents are always difficult to avoid.

[0003] When a water disaster occurs, if information and computer simulation technologies can be used to quickly deduce the progress of the water inrush process, provide technical support for formulating a scientific disaster relief plan and designing an effective escape route for workers, it has important application value and practical significance. The core technology to achieve the above idea is an effective method for calculating the water inrush path. In the prior art, there are methods for calculating the water inrush path with constant water inrush. However, in actual water inrush problems, the water inrush volume at the water inrush point varies with time. There is a large deviation between the roadway water inrush path determined based on constant water inrush in the existing methods and the actual water inrush path. Summary of the Invention

[0004] To overcome at least one deficiency in the prior art, the present application provides a method for calculating the water inrush flow path of a mine water inrush point with time-varying water inrush volume.

[0005] In a first aspect, there is provided a method for calculating the water inrush flow path of a mine water inrush point with time-varying water inrush volume, including:

[0006] Dividing the water inrush process into multiple time periods, determining that the water inrush volume for each time period is the water inrush volume at the start time of the time period; determining the pseudo-time corresponding to each time period and the start time and end time of the pseudo-time; each time period is 1 hour;

[0007] For each time period, based on the water inrush volume and water inrush time of each time period, using the calculation method for the mine roadway water inrush path with constant water inrush, calculate the water inrush path. The water inrush path includes a water flow downward record vector and a water flow upward record vector. The water flow downward record vector includes the positions of the water heads at each moment, and the water flow upward record vector includes the water level heights at each moment;

[0008] Based on the start time and end time of the pseudo-time, convert each moment in the water inrush path to actual time to obtain the water inrush path under actual time.

[0009] In one embodiment, determining the pseudo-time corresponding to each time period, as well as the start time and end time of the pseudo-time, according to the water inflow, includes:

[0010] The pseudo-time corresponding to each time period is:

[0011] T j =V j / V 1 , j = 2, 3, … n

[0012] T 1 = 1

[0013] Wherein, T j is the pseudo-time corresponding to the j-th time period, V j is the water inflow of the j-th time period, j is the label of the time period, n is the number of time periods, T 1 is the pseudo-time corresponding to the 1st time period, V 1 is the water inflow of the 1st time period;

[0014] The start time of the pseudo-time is:

[0015] S j = E j-1 , j = 2, 3, …, n

[0016] S 1 = 0

[0017] Wherein, S j is the start time of the pseudo-time corresponding to the j-th time period, E j-1 is the end time of the pseudo-time corresponding to the (j - 1)-th time period, S 1 is the start time of the pseudo-time corresponding to the 1st time period;

[0018] The end time of the pseudo-time is:

[0019] E j = S j + T j , j = 1, 2, 3, …, n

[0020] Wherein, E j is the end time of the pseudo-time corresponding to the j-th time period.

[0021] In one embodiment, based on the start time and end time of the pseudo-time, converting each moment in the water inrush path into actual time to obtain the water inrush path under actual time, includes:

[0022] Determining the pseudo-time corresponding to the moment according to the start time and end time of the pseudo-time;

[0023] Assume time t i The pseudo-time T corresponding to the j-th time period j , T j The start time is S j , and the end time is E j Then the actual time corresponding to time t i is:

[0024] DT i = j - 1 + (t i - S j ) / (E j - S j )

[0025] Correct the position of the water head at each moment to the position of the water head at each actual time, and correct the water level height at each moment to the water head level height at each actual time, so as to obtain the water inrush path at the actual time.

[0026] In a second aspect, a device for calculating the water inrush flow path of the water inrush point in a mine changing with time is provided, including:

[0027] A virtual constant water flow conversion module, which is used to divide the water inrush process into multiple time periods, determine that the water inrush volume of each time period is the water inrush volume at the start time of the time period; determine the pseudo-time corresponding to each time period and the start time and end time of the pseudo-time according to the water inrush volume;

[0028] A water inrush path calculation module, which is used for each time period, based on the water inrush volume and water inrush time of each time period, adopts a calculation method for the water inrush path of a mine roadway with constant water inrush to calculate the water inrush path. The water inrush path includes a water flow downward record vector and a water flow upward record vector. The water flow downward record vector includes the position of the water head at each moment, and the water flow upward record vector includes the water level height at each moment;

[0029] A time conversion module, which is used to convert each moment in the water inrush path into the actual time based on the start time and end time of the pseudo-time, so as to obtain the water inrush path at the actual time.

[0030] In one embodiment, the virtual constant water flow conversion module is further used for:

[0031] The pseudo-time corresponding to each time period is:

[0032] T j = V j / V 1 , j = 2, 3,... n

[0033] T 1 = 1

[0034] Where, T jis the pseudo-time corresponding to the j-th time period, V j is the water inflow of the j-th time period, j is the label of the time period, n is the number of time periods, T 1 is the pseudo-time corresponding to the 1st time period, V 1 is the water inflow of the 1st time period;

[0035] The start time of the pseudo-time is:

[0036] S j = E j-1 , j = 2, 3, …, n

[0037] S 1 = 0

[0038] where S j is the start time of the pseudo-time corresponding to the j-th time period, E j-1 is the end time of the pseudo-time corresponding to the (j - 1)-th time period, S 1 is the start time of the pseudo-time corresponding to the 1st time period;

[0039] The end time of the pseudo-time is:

[0040] E j = S j + T j , j = 1, 2, 3, …, n

[0041] where E j is the end time of the pseudo-time corresponding to the j-th time period.

[0042] In one embodiment, the time conversion module is further configured to:

[0043] Determine the pseudo-time corresponding to the time according to the start time and end time of the pseudo-time;

[0044] Assume that the time t i corresponds to the pseudo-time T j of the j-th time period, T j whose start time is S j and end time is E j , then the actual time corresponding to the time t i is:

[0045] DT i = j - 1 + (t i - S j ) / (E j - S j )

[0046] Correct the position of the water head at each moment to the position of the water head at each actual time, and correct the water level height at each moment to the water head level height at each actual time, so as to obtain the water inrush path at the actual time.

[0047] In a third aspect, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it is used to implement the method for calculating the water inrush flow path of the water inrush point in a mine varying with time as described above.

[0048] In a fourth aspect, a computer program product is provided, including a computer program / instructions. When the computer program / instructions are executed by a processor, it is used to implement the method for calculating the water inrush flow path of the water inrush point in a mine varying with time as described above.

[0049] Compared with the prior art, the present application has the following beneficial effects: In the method for calculating the water inrush flow path of the water inrush point in a mine varying with time of the present application, the water inrush process is divided into multiple time periods with 1 hour as a unit, and the water inrush volume at the start moment of each time period is used as the water inrush volume of each time period, converting the time-varying water inrush problem into a pseudo-time constant water inrush problem, and establishing the corresponding relationship between the pseudo-time and the actual time; using the calculation method of the water inrush path of the mine roadway with constant water inrush to calculate the water inrush path; converting each moment in the water inrush path into the actual time to obtain the water inrush path at the actual time. The water inrush path determined by the present application is closer to the actual spread situation of the water inrush flow, and the calculation result is helpful to provide a theoretical basis for the miners' escape and the design of the ground emergency rescue plan. Description of the Drawings

[0050] The present application can be better understood by referring to the description given in conjunction with the drawings in the following text. The drawings, together with the following detailed description, are included in this specification and form a part of this specification. In the drawings:

[0051] Figure 1 A flowchart showing the method for calculating the water inrush flow path of the water inrush point in a mine varying with time is shown;

[0052] Figure 2 A structural block diagram showing the device for calculating the water inrush flow path of the water inrush point in a mine varying with time is shown;

[0053] Figure 3 A schematic diagram of the computer implementation of the method for calculating the water inrush flow path of the water inrush point in a mine varying with time is shown; Detailed Embodiments

[0054] Exemplary embodiments of the present application will be described below with reference to the accompanying drawings. For clarity and conciseness, not all features of the actual embodiments are described in the specification. However, it should be understood that many embodiment-specific decisions may be made during the development of any such actual embodiment to achieve the specific goals of the developer, and these decisions may vary with different embodiments.

[0055] Here, it should also be noted that in order to avoid obscuring the present application with unnecessary details, only the device structures closely related to the solution of the present application are shown in the drawings, and other details less related to the present application are omitted.

[0056] It should be understood that the present application is not limited to the described embodiments due to the following description with reference to the drawings. In this document, where feasible, embodiments can be combined with each other, features can be replaced or borrowed between different embodiments, and one or more features can be omitted in one embodiment.

[0057] An embodiment of the present application provides a method for solving the water inrush flow path of the water inrush point in a mine with the change of water inrush volume over time, regarding the water inrush point, the water inrush volume, and the mine roadway network as a dynamic system. In the system, since the water inrush volume at the water inrush point changes over time, the water inrush process is divided into multiple time periods with 1 hour as a unit, and the water inrush volume at the start moment of each time period is used as the water inrush volume of each time period, converting the time-varying water inrush problem into a quasi-time-constant water inrush problem, and establishing the corresponding relationship between the quasi-time and the actual time.

[0058] Figure 1 A flowchart showing the method for solving the water inrush flow path of the water inrush point in a mine with the change of water inrush volume over time is shown. Refer to Figure 1 , the method includes:

[0059] Step S1, dividing the water inrush process into multiple time periods, and determining that the water inrush volume of each time period is the water inrush volume at the start moment of the time period; determining the corresponding quasi-time and the start and end moments of the quasi-time for each time period according to the water inrush volume; each time period is 1 hour.

[0060] Here, within each time period, the actual water inrush volume may change. Here, it is equivalent to assuming that the water inrush volume within this time period is constant and equal to the water inrush volume at the start of this time period.

[0061] The quasi-time is a virtual time concept, representing the "equivalent" duration of the water inrush volume within each time period. Since the time has been discretized and it is assumed that the water inrush volume within each time period is constant, a corresponding quasi-time can be calculated for each time period. Table 1 shows the corresponding relationship between the actual time and the quasi-time.

[0062] Table 1

[0063]

[0064] In Table 1, the time interval of the first time period is [0, 1], and the time interval of the j-th time period is [j - 1, j].

[0065] Specifically, the pseudo-time corresponding to each time period is as follows:

[0066] T j = V j / V 1 , j = 2, 3, … n

[0067] T 1 = 1

[0068] Among them, T j is the pseudo-time corresponding to the j-th time period, V j is the water inflow of the j-th time period, j is the label of the time period, n is the number of time periods, T 1 is the pseudo-time corresponding to the first time period, V 1 is the water inflow of the first time period, that is, the reference water inflow;

[0069] The start time of the pseudo-time is:

[0070] S j = E j-1 , j = 2, 3, …, n

[0071] S 1 = 0

[0072] Among them, S j is the start time of the pseudo-time corresponding to the j-th time period, E j-1 is the end time of the pseudo-time corresponding to the (j - 1)-th time period, S 1 is the start time of the pseudo-time corresponding to the first time period;

[0073] The end time of the pseudo-time is:

[0074] E j = S j + T j , j = 1, 2, 3, …, n

[0075] Among them, E j is the end time of the pseudo-time corresponding to the j-th time period.

[0076] Step S2: For each time period, based on the water inflow and water inflow time in each time period, use the calculation method of the water inrush path of mine roadways with constant water inflow to calculate the water inrush path. The water inrush path includes a water flow downward record vector and a water flow upward record vector. The water flow downward record vector includes the position of the water head at each moment, and the water flow upward record vector includes the water level height at each moment.

[0077] Here, each time period can be regarded as having a constant water inflow. The existing calculation method of the water inrush path of mine roadways with constant water inflow can be used to obtain the water inrush path. For example, the method disclosed in the patent application with the application number 202311345888.8 can be used for calculation.

[0078] The water flow downward record vector refers to the water flowing from high to low. The water flow downward record vector VD is denoted as:

[0079] VD = {(t 1 ,(x 1 ,y 1 ,z 1 )); (t 2 ,(x 2 ,y 2 ,z 2 )); …; (t i ,(x i ,y i ,z i )); …; (t m ,(x m ,y m ,z m ))}

[0080] Where, t i is the i-th moment, m is the number of moments in the water flow downward record vector, and (x i ,y i ,z i ) is the position of the water head at moment t i .

[0081] The water flow upward record vector refers to the water flowing from low to high. The water flow upward record vector VU is denoted as:

[0082] VU = {(t 1 ,h 1 ); (t 2 ,h 2 ); …; (t i ,h i ); …; (t k ,h k )}

[0083] Where, t iis the i-th moment, k is the number of moments in the upward water flow record vector, h i is the moment t i of the water level height below.

[0084] Step S3: Based on the start time and end time of the pseudo-time, convert each moment in the water inrush path into the actual time to obtain the water inrush path at the actual time.

[0085] Specifically, according to the start time and end time of the pseudo-time, determine the pseudo-time corresponding to the moment; here, check which pseudo-time's start time and end time the moment falls between according to Table 1.

[0086] Assume the moment t i corresponds to the pseudo-time T of the j-th time period j , T j 's start time is S j , and the end time is E j , then the actual time corresponding to the moment t i is:

[0087] DT i = j - 1 + (t i - S j ) / (E j - S j )

[0088] Correct the position of the water head at each moment to the position of the water head at each actual time, and correct the water level height at each moment to the water head level height at each actual time to obtain the water inrush path at the actual time.

[0089] Based on the same inventive concept as the method for solving the water inrush flow path of the water inrush point in a mine with the change of water inflow rate over time, this embodiment also provides a corresponding device for solving the water inrush flow path of the water inrush point in a mine with the change of water inflow rate over time. Figure 2 Fig. shows the structural block diagram of the device for solving the water inrush flow path of the water inrush point in a mine with the change of water inflow rate over time, including:

[0090] The virtual constant water flow conversion module 21 is used to divide the water inrush process into multiple time periods, determine that the water inflow rate of each time period is the water inflow rate at the start time of the time period; determine the pseudo-time corresponding to each time period and the start time and end time of the pseudo-time according to the water inflow rate;

[0091] The water inrush path calculation module 22 is used to calculate the water inrush path for each time period based on the water inrush volume and water inrush time of each time period, using the mine roadway water inrush path calculation method with constant water inrush. The water inrush path includes a downward water flow record vector and an upward water flow record vector. The downward water flow record vector includes the positions of the water heads at each moment, and the upward water flow record vector includes the water level heights at each moment.

[0092] The time conversion module 23 is used to convert each moment in the water inrush path into the actual time based on the start time and end time of the pseudo-time, so as to obtain the water inrush path under the actual time.

[0093] The device for solving the water inrush flow path with the change of water inrush volume at the water inrush point of the mine in this embodiment has the same inventive concept as the method for solving the water inrush flow path with the change of water inrush volume at the water inrush point of the mine above. Therefore, the specific implementation manner of the device can be seen in the embodiment part of the method for solving the water inrush flow path with the change of water inrush volume at the water inrush point of the mine in the previous text, and its technical effect corresponds to that of the above method, which will not be elaborated here.

[0094] The embodiment of the present application provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it is used to implement the above method for solving the water inrush flow path with the change of water inrush volume at the water inrush point of the mine.

[0095] The embodiment of the present application provides a computer program product, including a computer program / instructions. When the computer program / instructions are executed by a processor, it is used to implement the above method for solving the water inrush flow path with the change of water inrush volume at the water inrush point of the mine. Figure 3 The computer implementation schematic diagram of the method for solving the water inrush flow path with the change of water inrush volume at the water inrush point of the mine is shown.

[0096] In summary, the present application has the following technical effects:

[0097] 1. Improve the accuracy of water inrush path prediction. By considering the change of water inrush volume over time, it can more accurately simulate the real spread process of water flow in mine water disasters. Compared with the traditional constant water inrush model, it can reflect the dynamic changes of water flow at different time points, so the predicted water inrush path is closer to the actual situation.

[0098] 2. Optimize the disaster relief plan and escape route. Accurately predicting the water flow spread process and flooded area helps the mine management department quickly formulate an effective disaster relief plan when a disaster occurs. At the same time, a safer escape route can be selected according to the prediction results to reduce the risk of casualties.

[0099] 3. Enhance the prevention and control ability of mine water disasters. The application of this technology helps mining enterprises to understand the characteristics and laws of mine water disasters more comprehensively, so as to formulate more scientific prevention and control measures. Through long-term monitoring and analysis, the mine drainage system can be gradually optimized to reduce the risk of water disasters.

[0100] As described above, these are only various implementation manners of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claimed rights.

Claims

1. A method for calculating the flow path of water inrush at a mine water inrush point over time, characterized in that: include: Divide the water inrush process into multiple time periods, and determine the water inrush volume in each time period as the water inrush volume at the start of the time period; Determine the pseudo time corresponding to each time period and the start time and end time of the pseudo time according to the water inflow; each time period is 1 hour; For each time period, based on the water inrush volume and water inrush time of each time period, a mine tunnel water inrush path calculation method with constant water inrush is adopted to calculate the water inrush path, wherein the water inrush path includes a water flow downward recording vector and a water flow upward recording vector, wherein the water flow downward recording vector includes the position of the water head at each moment, and the water flow upward recording vector includes the water level at each moment; Based on the start time and the end time of the pseudo time, each time in the water inrush path is converted into the actual time to obtain the water inrush path in the actual time.

2. The method according to claim 1, characterized in that in, Determining the pseudo time corresponding to each time period and the start time and the end time of the pseudo time according to the water inflow, including: The pseudo time corresponding to each time period is: T j =V j / V1,j=2,3,…n T1＝1 Among them, T j is the pseudo time corresponding to the jth time period, V j is the water inflow in the jth time period, j is the number of time periods, n is the number of time periods, T1 is the pseudo time corresponding to the first time period, and V1 is the water inflow in the first time period; The starting time of the pseudo time is: S j =E j-1 ,j=2,3,…,n S1＝0 Among them, S j is the starting time of the pseudo-time corresponding to the jth time period, E j-1 is the end time of the pseudo-time corresponding to the j-1th time period, and S1 is the start time of the pseudo-time corresponding to the 1st time period; The end time of the pseudo time is: E j =S j +T j ,j=1,2,3,…,n Among them, E j is the end time of the pseudo time corresponding to the jth time period.

3. The method according to claim 1, characterized in that in, Based on the start time and the end time of the pseudo time, each time in the water inrush path is converted into the actual time to obtain the water inrush path under the actual time, including: Determine the pseudo time corresponding to the moment according to the start moment and the end moment of the pseudo time; Assume that time t i The pseudo time T corresponding to the i-th time period j , T j The starting time is S j , the end time is E j , then time t i The corresponding actual time is: DT i =j-1+(t i -S j ) / (E j -S j ) The water head position at each moment is corrected to the water head position at each actual time, and the water level at each moment is corrected to the water head and water level at each actual time, so as to obtain the water inrush path at the actual time.

4. A device for calculating the flow path of water inrush at a mine water inrush point as the amount of water inrush changes with time, characterized in that: include: A virtual constant water flow conversion module is used to divide the water inrush process into multiple time periods, and determine the water inrush volume of each time period as the water inrush volume at the start of the time period; Determine the pseudo time corresponding to each time period and the start time and end time of the pseudo time according to the water inflow; A water inrush path calculation module is used to calculate the water inrush path for each time period based on the water inrush volume and water inrush time of each time period by using a mine tunnel water inrush path calculation method with constant water inrush, wherein the water inrush path includes a water flow down record vector and a water flow up record vector, wherein the water flow down record vector includes the position of the water head at each moment, and the water flow up record vector includes the water level at each moment; The time conversion module is used to convert each moment in the water inrush path into actual time based on the start time and end time of the pseudo time, so as to obtain the water inrush path under the actual time.

5. The device according to claim 4, characterized in that The virtual constant water flow conversion module is also used for: The pseudo time corresponding to each time period is: T j =V j / V1,j=2,3,…n T1＝1 Among them, T j is the pseudo time corresponding to the jth time period, V j is the water inflow in the jth time period, j is the number of time periods, n is the number of time periods, T1 is the pseudo time corresponding to the first time period, and V1 is the water inflow in the first time period; The starting time of the pseudo time is: S j =E j-1 ,j=2,3,…,n S1＝0 Among them, S j is the starting time of the pseudo-time corresponding to the jth time period, E j-1 is the end time of the pseudo-time corresponding to the j-1th time period, and S1 is the start time of the pseudo-time corresponding to the 1st time period; The end time of the pseudo time is: E j =S j +T j ,j=1,2,3,…,n Among them, E j is the end time of the pseudo time corresponding to the jth time period.

6. The device according to claim 4, characterized in that The time conversion module is further used for: Determine the pseudo time corresponding to the moment according to the start moment and the end moment of the pseudo time; Assume that time t i The pseudo time T corresponding to the jth time period j , T j The starting time is S j , the end time is E j , then time t i The corresponding actual time is: DT i =j-1+(t i -S j ) / (E j -S j ) The water head position at each moment is corrected to the water head position at each actual time, and the water level at each moment is corrected to the water head and water level at each actual time, so as to obtain the water inrush path at the actual time.

7. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it implements the method of solving the water inrush flow path of a mine water inrush point that changes with time as described in any one of claims 1 to 3.

8. A computer program product, characterized in that It includes a computer program / instruction, which, when executed by a processor, implements the method of solving the water inrush flow path of a mine water inrush point that varies with time as described in any one of claims 1 to 3.

Images