Rescue method for trapped persons in flooded mine

Abstract

The invention provides a rescuing method for trapped persons in a flooded mine. The rescuing method comprises the following steps that S1, the situation of the trapped persons during water inrush is confirmed; s2, determining the highest water level after water inrush of the flooded mine and calculating the water level of the space where trapped persons are located; s3, the ground rescue drilling hole position and the final hole depth are determined for drilling, and it is ensured that the final hole is located under the water of the flooded roadway close to the area where the trapped persons are located; s4, a rescue cage is put into the rescue drill hole, and a frogman or a robot, rescue supplies and rescue equipment are arranged in the rescue cage; and S5, the trapped person wears rescue equipment and enters the rescue cage together with the frogman or the robot, and the rescue cage is lifted to be separated from the flooded mine to the ground. According to the method, the rescue speed is high, the final hole of the rescue drill hole is arranged underwater in the flooded roadway of the area where the trapped person is located, the traditional mode that the drill hole is directly drilled into the roadway or the underground tunnel where the trapped person is located is effectively replaced, the situation that the water level rises due to air leakage in the space of the single-head roadway, and consequently the person in distress expands the accident in distress is prevented, and the rescue risk is low.

Description

Technical Field

[0001] The invention relates to the technical field of mine safety, and in particular to a method for rescuing trapped persons in a flooded mine. Background Art

[0002] Most coal mines have extremely complex hydrogeological conditions, with frequent water inrush and large water inflow, which poses a serious threat to mine safety. Water in the strong aquifers on the top and bottom of the coal seam or in the old empty areas often causes water inrush, causing the mine to be flooded.

[0003] Because dead-end tunnels such as uphill tunnels, inclined tunnels, and overhead mining faces underground can form "bubbles" after flooding, providing short-term refuge space for underground personnel, people often survive here.

[0004] The existing patent (CN109611024A) discloses a construction method of large-aperture emergency rescue drilling, which includes the following steps: Step S101: Find a rescue point in the accident mining area where the trapped personnel underground can be directly lifted up for rescue; Step S102: Drill a first large-aperture borehole at the rescue point, insert the first large-aperture casing and cement the well to form the first section of cementing; Step S103: Continue drilling from the bottom of the first section of cementing to the preset distance above the underground tunnel or tunnel to stop drilling, and form a small-aperture guide hole; Step S104: Expand the small-aperture guide hole and drill to the underground tunnel or tunnel to stop drilling, insert the second large-aperture casing, and form a stable second large-aperture borehole. By lowering the rescue capsule or other lifting equipment, the trapped personnel can be directly lifted up, and at the same time, the secondary accidents caused to the rescue personnel by the high risk of underground rescue can be avoided, which can improve the success rate of mine disaster rescue, reduce the production mortality rate and property loss of mines, and ensure the safe production of mines.

[0005] In actual rescue, in order to prevent the air leakage in the dead-end tunnel space from causing the water level to rise, it should be strictly prohibited to drill holes to rescue people trapped in such spaces below the highest water level after water seepage, so as to avoid the distress of people in distress and expand the accident. However, if the method of blocking the water inrush channel or forced drainage is adopted to treat the water disaster first and then rescue people, it is often difficult to complete the treatment project in a short time due to the huge amount of water inrush, and the people in distress will eventually be difficult to survive due to oxygen depletion or hunger. Summary of the invention

[0006] The purpose of the present invention is to provide a method for rescuing trapped persons in a flooded mine to solve the above technical problems.

[0007] The present invention provides a method for rescuing trapped persons in a flooded mine, comprising the following steps:

[0008] S1, confirm the situation of people trapped during water inrush;

[0009] S2, determine the highest water level after the flooded mine inrush and calculate the water level in the space where the trapped people are located;

[0010] S3, determine the ground rescue drilling hole position and final hole depth and drill to ensure that the final hole is located underwater in the flooded tunnel near the area where the trapped persons are located;

[0011] S4, lowering a rescue cage into the rescue borehole, wherein the rescue cage is equipped with a frogman or a robot, rescue supplies and rescue equipment;

[0012] S5: The trapped personnel wear rescue equipment and enter the rescue cage together with the frogman or robot, and lift the rescue cage out of the flooded mine to the ground.

[0013] Furthermore, S1 collects relevant information about the flooded mine and combines it with the comparison chart between the above-ground and underground mines to analyze and determine the exact locations of the dead-end tunnels in the underground uphill, inclined tunnels, and overhead mining faces where the trapped personnel may be trapped.

[0014] Furthermore, in S1, the number of people trapped underground is confirmed through the registration records of people entering and leaving the well.

[0015] Furthermore, in S2, the water level of the dead-end tunnel is calculated based on the location and space size of the dead-end tunnel where the trapped persons are trapped.

[0016] Furthermore, in S3, the water level of the dead-end tunnel where the trapped persons are trapped is vertically projected onto the ground surface to determine the drilling position for ground rescue.

[0017] Furthermore, the ground rescue drilling hole position in S3 should be determined just above the flooded tunnel near the area where the trapped persons are located, and should be a certain distance away from the area where the trapped persons are located.

[0018] Furthermore, in S3, one or more large-diameter vertical boreholes are constructed into the flooded tunnel at the designed ground position to ensure that the bottom of the final hole is close to the area where the trapped persons are located, so as to ensure that the underground rescue path is the shortest; the bottom of the final hole is ensured to be located in the flooded area of ​​the entire section of the flooded tunnel, so as to ensure that the rescue drilling does not leak air from the area where the trapped persons are located.

[0019] Furthermore, the rescue supplies in S4 include medicines and food, and the rescue equipment includes oxygen cylinders and diving suits.

[0020] Furthermore, the trapped persons in S5 put on rescue equipment and enter the rescue cage together under the guidance of frogmen or robots.

[0021] Furthermore, the frogman or robot in S5 sends a signal to the ground to lift the rescue cage to the ground.

[0022] The present invention has a fast rescue speed. By setting the end hole of the rescue drilling hole underwater in the flooded tunnel where the trapped people are located, it effectively replaces the traditional method of directly drilling into the tunnel or pit where the trapped people are located, preventing air leakage in the dead-end tunnel space from causing the water level to rise, causing the distress of the people in distress to expand the accident, and the rescue risk is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 is a flow chart of the rescue method of the present invention;

[0025] Figure 2 This is one of the rescue schematic diagrams of the present invention;

[0026] Figure 3 This is the second rescue schematic diagram of the present invention;

[0027] Description of reference numerals:

[0028] In the figure: 1-rescue drilling hole, 2-drilling hole water level, 3-rescue cage, 4-tunnel water level, 5-frogman, 6-rescue supplies and equipment, 7-trapped persons, 8-rescued persons; DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than 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.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Example 1

[0033] like Figure 1-Figure 3 As shown:

[0034] A method for rescuing trapped persons in a flooded mine, comprising the following steps:

[0035] S1, confirm the situation of the trapped persons 7 during the water inrush;

[0036] S2, determine the highest water level after the flooded mine inrush and calculate the water level in the space where the trapped people are located;

[0037] S3, determine the ground rescue drilling hole position and the final hole depth to drill, and ensure that the final hole is located underwater in the flooded tunnel near the area where the trapped person 7 is located;

[0038] S4, lowering a rescue cage 3 into the rescue borehole 1, wherein the rescue cage 3 is equipped with a frogman 5 or a robot, rescue supplies and rescue equipment 6;

[0039] S5, the trapped person 7 wears rescue equipment and enters the rescue cage 3 together with the frogman 5 or the robot, and lifts the rescue cage 3 out of the flooded mine to the ground.

[0040] In S1, relevant information about the flooded mine is first collected, and combined with the comparison chart of the mine and underground, the exact location of the underground trapped personnel 7, such as the underground uphill tunnel, inclined tunnel, and overhead mining working face, is analyzed and determined.

[0041] The number of people trapped underground was confirmed through the registration records of people entering and leaving the well.

[0042] In S2, the water level 4 of the dead-end tunnel is calculated based on the location and space size of the dead-end tunnel where the trapped person 7 may be trapped.

[0043] In S3, the water level 4 of the dead-end tunnel where the trapped person 7 is trapped is vertically projected onto the ground surface to determine the drilling position for ground rescue.

[0044] The drilling hole position for ground rescue should be determined just above the flooded tunnel near the area where the trapped persons 7 are located, and should be a certain distance away from the area where the trapped persons 7 are located. If the distance is too long, the rescue distance will be too far; if the distance is too short, drilling into the trapped space will cause air leakage.

[0045] According to the vertical projection line and the water level 4 of the dead-end tunnel, the depth of the rescue drilling hole 1 and the final hole position are determined for drilling.

[0046] The rescue borehole 1 should ensure that the final hole is underwater in the flooded tunnel. At this time, the drilling water level 2 will rise to a certain height along the borehole, while the tunnel water level 4 will not change, and the gas in the tunnel will not be depressurized.

[0047] Construct one or more large-diameter vertical boreholes into the flooded tunnel at the designed ground position, and ensure that the bottom of the final hole is close to the area where the trapped person 7 is located to ensure that the underground rescue path is the shortest; ensure that the bottom of the final hole is located in the flooded area of ​​the entire section of the flooded tunnel to ensure that the rescue borehole 1 does not leak air from the area where the trapped person 7 is located.

[0048] In S4, the rescue cage 3 is one layer or multiple layers.

[0049] Rescue supplies include medicines and food, and rescue equipment includes oxygen cylinders and diving suits.

[0050] The frogman 5 or the robot carries rescue supplies and rescue equipment 6 into the rescue cage 3 and goes down into the rescue borehole 1 along with the rescue cage 3 until the bottom of the hole.

[0051] The frogman 5 or the robot opens the cage door and transports various rescue supplies and rescue equipment 6 to the area where the trapped persons 7 are located.

[0052] In S5, the trapped person 7 puts on the rescue equipment and enters the rescue cage 3 under the guidance of the frogman 5 or the robot.

[0053] The frogman 5 or the robot sends a signal to the ground to lift the rescue cage 3 to the ground, and the rescued person 8 leaves the rescue cage 3, completing the rescue work.

[0054] If the number of trapped persons 7 is large, S4 and S5 may be repeated multiple times until all trapped persons 7 are lifted out of the flooded mine.

[0055] The present invention has a fast rescue speed, a small amount of engineering and a short construction period. By setting the terminal hole of the rescue drilling hole under the water in the flooded tunnel where the trapped persons are located, it effectively replaces the traditional method of directly drilling into the tunnel or pit where the trapped persons are located, and prevents the air leakage in the dead-end tunnel space from causing the water level to rise and cause the distress of the distressed persons to expand the accident. The rescue process is simple, easy to master, and the rescue risk is low, which can ensure the shortest rescue path and provide time guarantee for the rescue of the trapped persons. The rescue supplies can be used for emergency treatment, and the rescue success is highly guaranteed. The project cost is low.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for rescuing trapped persons in a flooded mine, characterized in that The following steps are involved: S1, confirm the situation of people trapped during water inrush; S2, determine the highest water level after the flooded mine inrush and calculate the water level in the space where the trapped people are located; S3, determine the ground rescue drilling hole position and final hole depth and drill to ensure that the final hole is located underwater in the flooded tunnel near the area where the trapped persons are located; S4, lowering a rescue cage into the rescue borehole, wherein the rescue cage is equipped with a frogman or a robot, rescue supplies and rescue equipment; S5: The trapped personnel wear rescue equipment and enter the rescue cage together with the frogman or robot, and lift the rescue cage out of the flooded mine to the ground.

2. The method for rescuing trapped persons in a flooded mine according to claim 1, characterized in that: In S1, by collecting relevant information about the flooded mine and combining it with the comparison chart of the underground and above ground, the exact location of the dead-end tunnels in the underground uphill, inclined tunnels, and overhead mining working faces where the trapped people may be trapped is analyzed and determined.

3. The method for rescuing trapped persons in a flooded mine according to claim 1, characterized in that: In S1, the number of people trapped underground is confirmed through the registration records of people entering and leaving the well.

4. The method for rescuing trapped persons in a flooded mine according to claim 1, characterized in that: In S2, the water level of the dead-end tunnel is calculated based on the location and space size of the dead-end tunnel where the trapped persons are trapped.

5. The method for rescuing trapped persons in a flooded mine according to claim 1, characterized in that: In S3, the water level in the dead-end tunnel where the trapped people are trapped is vertically projected onto the ground surface to determine the drilling position for ground rescue.

6. The method for rescuing trapped persons in a flooded mine according to claim 1, characterized in that: The ground rescue drilling hole position in S3 should be determined just above the flooded tunnel near the area where the trapped persons are located, and should be a certain distance away from the area where the trapped persons are located.

7. The method for rescuing trapped persons in a flooded mine according to claim 1, characterized in that: In S3, one or more large-diameter vertical boreholes are constructed into the flooded tunnel at the designed ground position to ensure that the bottom of the final hole is close to the area where the trapped persons are located to ensure the shortest underground rescue path; the bottom of the final hole is ensured to be located in the flooded area of ​​the entire section of the flooded tunnel to ensure that the rescue drilling does not leak air from the area where the trapped persons are located.

8. The method for rescuing trapped persons in a flooded mine according to claim 1, characterized in that: In S4, rescue supplies include medicines and food, and rescue equipment includes oxygen cylinders and diving suits.

9. The method for rescuing trapped persons in a flooded mine according to claim 1, characterized in that: The trapped people in S5 put on rescue equipment and enter the rescue cage under the guidance of frogmen or robots.

10. The method for rescuing trapped persons in a flooded mine according to claim 1, characterized in that: In S5, the frogman or robot sends a signal to the ground to lift the rescue cage to the ground.

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