Method and system for determining water inrush quantity of mine

Abstract

The invention provides a mine water inrush quantity determination method and system, and relates to the technical field of mine water disaster prevention and control, and the method comprises the steps: after mine water inrush, recording the time when the water inrush level of a roadway and a goaf rises to two elevation levels; when the mine reproduces, the water inrush in the mine is pumped through the water suction pump; a flowmeter of the water pump records the water pumping amount between the two elevation positions; and calculating the water inrush amount of the mine according to the time when the water inrush level rises to the two elevation levels and the water pumping amount between the two elevation levels. According to the method, the time for the water inrush to rise to the two elevation positions after the water inrush occurs and the water pumping amount between the two elevation positions recorded by the water suction pump flowmeter are ingeniously applied, accurate calculation of the water inrush amount of the mine is achieved, and compared with the situation that the volumes of roadways and goaf areas need to be calculated in the prior art, the complex hydrogeological problem is simplified, and the calculation efficiency is improved. A new method is provided for simply and accurately calculating the water inrush quantity of the mine, and the calculation accuracy and efficiency of the water inrush quantity are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mine water hazard prevention and control, and in particular relates to a method and system for determining the amount of water inrush in a mine. Background Art

[0002] Among the major accidents in coal mines, water accidents are the "second killer" after gas accidents, which pose a serious threat to coal mine safety production. After a coal mine flooding accident occurs, it is a very important technical task to accurately understand the amount of water inrush in the mine and quickly and accurately estimate the amount of water inrush according to specific conditions. It is an important scientific basis for handling mine flood accidents and determining emergency rescue plans. It plays a very important role in correctly analyzing and evaluating the hydrogeological conditions and hazard levels of the mine, determining the mine's defense capabilities, and formulating water prevention and control countermeasures.

[0003] At present, the volumetric method is mostly used to estimate the amount of water inrush in mines. This method requires geologists to accurately grasp the production situation of the mine, and the calculation is large and the calculation process is cumbersome. Especially for large water inrush accidents, the calculation error is large. For example: (1) When a mine floods, if the water fills the underground tunnels and other spaces from the bottom to the top, the flooding time of the lower horizontal tunnel chamber can be used to estimate the amount of water inrush, that is: Q = V / t1 or Q = S1H1 / t1, where: V-the flooded volume of the lower horizontal tunnel, m 3 ; t1-flooding time, h; S1-horizontal cross-sectional area of ​​the lower horizontal chamber tunnel, m 2 ; H1-height of water level rise in time t1, m. (2) After the water burst, if the water burst exceeds the drainage capacity of the mining working face or level, the lower horizontal tunnel will be flooded. If the water level rises to the old kiln area that has been mined, the water burst calculation formula is: Q = KS H2 M / t2cosα, where: K-flooding coefficient of goaf (empirical value, generally 0.2-0.35), S2-flooded goaf area, m 2 ; H2-height of water level rise, m; M-actual mining height of coal seam in goaf, m; α-inclination angle of coal seam, (°); t2-time taken for water level to rise to elevation H2, h.

[0004] To calculate the amount of water inrush from a mine using the formula in (1), it is necessary to accurately estimate the volume of the tunnel. However, since the underground tunnel space itself is an irregular geometric shape, and the original stress state of the coal rock mass is destroyed after the tunnel is excavated, the tunnel space is squeezed and deformed under the influence of comprehensive factors such as mine pressure and mining damage, which will cause certain errors in the calculation results. To calculate the amount of water inrush from a mine using the formula in (2), it is necessary to understand the number of coal layers mined in the area to be flooded, the mining thickness, the coal seam inclination, the mining area, the mining years, the mining method and other parameters, calculate the volume of the flooded tunnel and mining area at a certain elevation, and then select different flooding coefficients (empirical values, the selected values ​​have a great influence on the calculation results) according to the mining years. The calculation is large and the calculation process is cumbersome. It requires a very familiarity with the production conditions of the mine in the area. Only professional technicians with high professional qualities can complete it.

[0005] Based on the above problems, it is particularly important to provide a simple and easy method to calculate the water inrush. Summary of the invention

[0006] In view of the above problems, the present invention proposes a method and system for determining the amount of water inrush in a mine, which can quickly determine the amount of water inrush, has simple operation and calculation processes, and greatly improves the accuracy of the calculation results of the water inrush.

[0007] To achieve the above object, the present invention discloses a method for determining the amount of water inrush in a mine, comprising:

[0008] After the mine water inrush, record the time when the water level in the tunnel and goaf rises to two elevation levels;

[0009] When the mine resumes production, the water inrush in the mine is extracted by a water pump;

[0010] The flow meter of the water pump records the amount of water pumped between the two elevations;

[0011] The amount of water inrush in the mine is calculated based on the time it takes for the water level to rise to two elevations and the amount of water pumped between the two elevations.

[0012] As a further improvement of the present invention, the calculation formula of the mine water inrush volume is:

[0013] Q 突 =Q 抽 / (T2-T1)

[0014] In the formula,

[0015] Q 突 Indicates the amount of water inrush from a mine;

[0016] Q 抽 Indicates the amount of water pumped between the two elevations recorded by the flow meter;

[0017] T1 and T2 represent the time when the water level rises to the two elevations. <T2。

[0018] As a further improvement of the present invention,

[0019] Set multiple elevations;

[0020] After the mine water burst, record the time when the water level in the tunnel and goaf rises to each elevation;

[0021] When the mine is resumed, the water inrush in the mine is extracted by a pump, and the flow meter of the pump records the amount of water pumped between any two elevations;

[0022] For any two elevations, the water inrush volume of the mine is calculated based on the pumping volume between the two elevations and the time it takes for the water inrush level to rise to the two elevations;

[0023] The average value of the water inrush volumes calculated for multiple mines is calculated.

[0024] The present invention also provides a system for determining the amount of water inrush in a mine, comprising: a time recording module, a water pumping module, a water pumping amount recording module and a water inrush amount calculation module;

[0025] The time recording module is used to:

[0026] After the mine water inrush, record the time when the water level in the tunnel and goaf rises to two elevation levels;

[0027] The pumping module is used for:

[0028] When the mine resumes production, the water inrush in the mine is extracted by a water pump;

[0029] The pumping volume recording module is used for:

[0030] The flow meter of the water pump records the amount of water pumped between the two elevations;

[0031] The water inrush volume calculation module is used to:

[0032] The amount of water inrush in the mine is calculated based on the time it takes for the water level to rise to two elevations and the amount of water pumped between the two elevations.

[0033] As a further improvement of the present invention, the calculation formula of the mine water inrush volume is:

[0034] Q 突 =Q 抽 / (T2-T1)

[0035] In the formula,

[0036] Q 突 Indicates the amount of water inrush in the mine;

[0037] Q 抽 Indicates the amount of water pumped between the two elevations recorded by the flow meter;

[0038] T1 and T2 represent the time when the water level rises to the two elevations. <T2。

[0039] As a further improvement of the present invention, it also includes an elevation setting module for:

[0040] Set multiple elevations;

[0041] The time recording module is also used for:

[0042] After the mine water burst, record the time when the water level in the tunnel and goaf rises to each elevation;

[0043] The pumping module is also used for:

[0044] When the mine resumes production, the water inrush in the mine is extracted by a water pump;

[0045] The pumping volume recording module is also used for:

[0046] The flow meter of the water pump records the water pumping volume between any two elevation levels;

[0047] The water inrush volume calculation module is also used for:

[0048] For any two elevations, the water inrush volume of the mine is calculated based on the pumping volume between the two elevations and the time it takes for the water inrush level to rise to the two elevations;

[0049] The average value of the water inrush volumes calculated for multiple mines is calculated.

[0050] Compared with the prior art, the present invention has the following beneficial effects:

[0051] The present invention cleverly uses the time it takes for the water to rise to two elevations after a water inrush occurs and the amount of water pumped between the two elevations recorded by the water pump flowmeter when the mine resumes production, to achieve accurate calculation of the amount of water inrush in the mine. Compared with the prior art that requires calculation of the volume of tunnels and goafs, the present invention simplifies complex hydrogeological problems, provides a new method for concise and accurate calculation of water inrush in mines, and improves the calculation accuracy and efficiency of water inrush.

[0052] The present invention can also further improve the accuracy of the water inrush volume by setting multiple elevations, recording the time for the water inrush to rise to each elevation, and recording the water pumping volume between any two elevations, calculating the water inrush volume respectively, and finally finding the average value.

[0053] The invention has a simple process, small amount of calculation, small error, and simple operation, and can be completed without professional technicians of professional quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 A flow chart of a method for determining water inrush volume in a mine disclosed in an embodiment of the present invention;

[0055] Figure 2 The present invention is a schematic diagram of a system for determining water inrush volume in a mine disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0058] like Figure 1 As shown, a method for determining the amount of water inrush in a mine disclosed in the present invention can quickly and accurately determine the amount of water inrush. It only needs to record the time of at least two elevations when the water inrush rises and floods the mine, and the amount of water pumped at these two elevations when resuming production, specifically including:

[0059] S1. After the mine water burst, record the time when the water level in the tunnel and goaf rises to the two elevation levels;

[0060] in,

[0061] Set two elevations H1 and H2;

[0062] When the water level of the sudden flood rises to the elevation H1, the recorded time is T1;

[0063] When the water level of the sudden flood rises to elevation H2, the recorded time is T2.

[0064] S2. When the mine resumes production, the water inrush in the mine is extracted by a water pump;

[0065] in,

[0066] Advanced water pumps with flow meters are used to extract water inrush from the mine and measure the amount of water inrush from the mine.

[0067] S3, the flow meter of the water pump records the water pumping volume between the two elevations;

[0068] in,

[0069] The data on the flow meter of the water pump is the amount of water pumped out.

[0070] S4. Calculate the amount of water inrush in the mine based on the time it takes for the water level to rise to two elevations and the amount of water pumped between the two elevations.

[0071] in,

[0072] The calculation principle is: when the mine water inrush floods the mine tunnels and goaf, the space at the same position and the same elevation, the amount of water filled in the flooded space during the filling is equal to the amount of water pumped out when the mine resumes production (that is, the amount of water released from the flooded space);

[0073] Furthermore, the calculation process includes:

[0074] The time taken for the water level to flood from elevation H1 to elevation H2 is T2-T1;

[0075] When the water level is reduced from the elevation H2 to the elevation H1 during the resumption of production, the amount of water pumped is Q 抽 ;

[0076] The calculation formula for the amount of water inrush in the mine is:

[0077] Q 突 =Q 抽 / (T2-T1)

[0078] In the formula,

[0079] Q 突 Indicates the amount of water inrush in the mine;

[0080] Q 抽 Indicates the amount of water pumped between the two elevations recorded by the flow meter;

[0081] T1 and T2 represent the time when the water level rises to the two elevations. <T2。

[0082] In the present invention, in order to further improve the accuracy of the calculation results, multiple groups of data can be recorded, and then the water inrush volumes of multiple mines can be calculated to obtain an average value, specifically:

[0083] Set multiple elevations H1, H2, H3...H i ;

[0084] After the mine water burst, record the time when the water level in the tunnel and goaf rises to each elevation. For example, when the water level rises to elevation H1, the recorded time is T1; when the water level rises to elevation H2, the recorded time is T2; when the water level rises to elevation H3, the recorded time is T3..., when the water level rises to elevation H iWhen, record the time as Ti...;

[0085] When the mine resumes production, the water inrush in the mine is extracted by a pump. The flow meter of the pump records the pumping volume between any two elevations. For example, when the water level drops from elevation H3 to elevation H2, the recorded pumping volume is Q. 抽1 When the water level drops from elevation H2 to elevation H1, the recorded pumping volume is Q 抽2 When the water level drops from elevation H3 to elevation H1, the recorded pumping volume is Q 抽3 ;

[0086] For any two elevations, the water inrush volume of the mine is calculated based on the pumping volume between the two elevations and the time it takes for the water inrush level to rise to the two elevations, that is:

[0087] Q 突1 =Q 抽1 / (T3-T2)

[0088] Q 突2 =Q 抽2 / (T2-T1)

[0089] Q 突3 =Q 抽3 / (T3-T1)

[0090] The average value of the water inrush volume of multiple mines is calculated, that is:

[0091] Q 突 =(Q 突1 +Q 突2 +Q 突3 ) / 3.

[0092] In the present invention, when setting the elevation or calculating, two elevations with a larger elevation difference are selected for calculation, and the average value of the water inrush volume is obtained by selecting multiple sections, so that the calculation result can be made more accurate.

[0093] like Figure 2 As shown, the present invention also provides a system for determining the amount of water inrush in a mine, comprising: a time recording module, a pumping module, a pumping amount recording module and a water inrush amount calculation module;

[0094] Time recording module for:

[0095] After the mine water inrush, record the time when the water level in the tunnel and goaf rises to two elevation levels;

[0096] in,

[0097] Set two elevations H1 and H2;

[0098] When the water level of the sudden flood rises to the elevation H1, the recorded time is T1;

[0099] When the water level of the sudden water rises to elevation H2, the recorded time is T2.

[0100] Pumping modules for:

[0101] When the mine resumes production, the water inrush in the mine is extracted by a water pump;

[0102] in,

[0103] Advanced water pumps with flow meters are used to extract water inrush from the mine and measure the amount of water inrush from the mine.

[0104] Pumping volume recording module for:

[0105] The flow meter of the water pump records the amount of water pumped between the two elevations;

[0106] in,

[0107] The data on the flow meter of the water pump is the amount of water pumped out.

[0108] The water inrush calculation module is used for:

[0109] The amount of water inrush in the mine is calculated based on the time it takes for the water level to rise to two elevations and the amount of water pumped between the two elevations.

[0110] in,

[0111] The calculation principle is: when the mine water inrush floods the mine tunnels and goaf, the space at the same position and the same elevation, the amount of water filled in the flooded space during the filling is equal to the amount of water pumped out when the mine resumes production (that is, the amount of water released from the flooded space);

[0112] Furthermore, the calculation process includes:

[0113] The time taken for the water level to flood from elevation H1 to elevation H2 is T2-T1;

[0114] When the water level is reduced from the elevation H2 to the elevation H1 during the resumption of production, the amount of water pumped is Q 抽 ;

[0115] The calculation formula for the amount of water inrush in the mine is:

[0116] Q 突 =Q 抽 / (T2-T1)

[0117] In the formula,

[0118] Q 突 Indicates the amount of water inrush in the mine;

[0119] Q 抽 Indicates the amount of water pumped between the two elevations recorded by the flow meter;

[0120] T1 and T2 represent the time when the water level rises to the two elevations. <T2。

[0121] In the present invention, in order to further improve the accuracy of the calculation results, multiple groups of data can be recorded, and then the water inrush volumes of multiple mines can be calculated to obtain an average value, specifically:

[0122] Set multiple elevations H1, H2, H3...H i ;

[0123] After the mine water burst, record the time when the water level in the tunnel and goaf rises to each elevation. For example, when the water level rises to elevation H1, the recorded time is T1; when the water level rises to elevation H2, the recorded time is T2; when the water level rises to elevation H3, the recorded time is T3..., when the water level rises to elevation H i When, record the time as Ti...;

[0124] When the mine resumes production, the water inrush in the mine is extracted by a pump. The flow meter of the pump records the pumping volume between any two elevations. For example, when the water level drops from elevation H3 to elevation H2, the recorded pumping volume is Q. 抽1 When the water level drops from elevation H2 to elevation H1, the recorded pumping volume is Q 抽2 When the water level drops from elevation H3 to elevation H1, the recorded pumping volume is Q 抽3 ;

[0125] For any two elevations, the water inrush volume of the mine is calculated based on the pumping volume between the two elevations and the time it takes for the water inrush level to rise to the two elevations, that is:

[0126] Q 突1 =Q 抽1 / (T3-T2)

[0127] Q 突2 =Q 抽2 / (T2-T1)

[0128] Q 突3 =Q 抽3 / (T3-T1)

[0129] The average value of the water inrush volume of multiple mines is calculated, that is:

[0130] Q 突 =(Q 突1 +Q 突2 +Q 突3 ) / 3.

[0131] In the present invention, when setting the elevation or calculating, two elevations with a larger elevation difference are selected for calculation, and the average value of the water inrush volume is obtained by selecting multiple sections, so that the calculation result can be made more accurate.

[0132] Advantages of the present invention:

[0133] The present invention cleverly uses the time it takes for the water to rise to two elevations after a water inrush occurs and the amount of water pumped between the two elevations recorded by the water pump flowmeter when the mine resumes production, to achieve accurate calculation of the amount of water inrush in the mine. Compared with the prior art that requires calculation of the volume of tunnels and goafs, the present invention simplifies complex hydrogeological problems, provides a new method for concise and accurate calculation of water inrush in mines, and improves the calculation accuracy and efficiency of water inrush.

[0134] The present invention can also further improve the accuracy of the water inrush volume by setting multiple elevations, recording the time for the water inrush to rise to each elevation, and recording the water pumping volume between any two elevations, calculating the water inrush volume respectively, and finally finding the average value.

[0135] The invention has a simple process, small amount of calculation, small error, and simple operation, and can be completed without professional technicians of professional quality.

[0136] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for determining the amount of water inrush in a mine, characterized in that: include: After the mine water inrush, record the time when the water level in the tunnel and goaf rises to two elevation levels; When the mine resumes production, the water inrush in the mine is extracted by a water pump; The flow meter of the water pump records the amount of water pumped between the two elevations; The amount of water inrush in the mine is calculated based on the time it takes for the water level to rise to two elevations and the amount of water pumped between the two elevations.

2. The method for determining the amount of water inrush in a mine according to claim 1, characterized in that: The calculation formula for the amount of water inrush from the mine is: Q 突 =Q 抽 / (T2-T1) In the formula, Q 突 Indicates the amount of water inrush in the mine; Q 抽 Indicates the amount of water pumped between the two elevations recorded by the flow meter; T1 and T2 represent the time when the water level rises to the two elevations. <T2。 3. The method for determining the amount of water inrush in a mine according to claim 1, characterized in that: Set multiple elevations; After the mine water burst, record the time when the water level in the tunnel and goaf rises to each elevation; When the mine is resumed, the water inrush in the mine is extracted by a pump, and the flow meter of the pump records the amount of water pumped between any two elevations; For any two elevations, the water inrush volume of the mine is calculated based on the pumping volume between the two elevations and the time it takes for the water inrush level to rise to the two elevations; The average value of the water inrush volumes calculated for multiple mines is calculated.

4. A system for determining the amount of water inrush in a mine, implementing the method for determining the amount of water inrush in a mine as claimed in any one of claims 1 to 3, characterized in that: include: Time recording module, pumping module, pumping volume recording module and water inrush volume calculation module; The time recording module is used to: After the mine water inrush, record the time when the water level in the tunnel and goaf rises to two elevation levels; The pumping module is used for: When the mine resumes production, the water inrush in the mine is extracted by a water pump; The pumping volume recording module is used for: The flow meter of the water pump records the amount of water pumped between the two elevations; The water inrush volume calculation module is used to: The amount of water inrush in the mine is calculated based on the time it takes for the water level to rise to two elevations and the amount of water pumped between the two elevations.

5. The system for determining the amount of water inrush in a mine according to claim 4, characterized in that: The calculation formula for the amount of water inrush from the mine is: Q 突 =Q 抽 / (T2-T1) In the formula, Q 突 Indicates the amount of water inrush in the mine; Q 抽 Indicates the amount of water pumped between the two elevations recorded by the flow meter; T1 and T2 represent the time when the water level rises to the two elevations. <T2。 6. The system for determining the amount of water inrush in a mine according to claim 4, characterized in that: Also includes elevation setting module for: Set multiple elevations; The time recording module is also used for: After the mine water burst, record the time when the water level in the tunnel and goaf rises to each elevation; The pumping module is also used for: When the mine resumes production, the water inrush in the mine is extracted by a water pump; The pumping volume recording module is also used for: The flow meter of the water pump records the water pumping volume between any two elevation levels; The water inrush volume calculation module is also used for: For any two elevations, the water inrush volume of the mine is calculated based on the pumping volume between the two elevations and the time it takes for the water inrush level to rise to the two elevations; The average value of the water inrush volumes calculated for multiple mines is calculated.

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