CN114893250A - Coal seam water inrush detection and plugging device and method - Google Patents
Coal seam water inrush detection and plugging device and method Download PDFInfo
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- CN114893250A CN114893250A CN202210653220.9A CN202210653220A CN114893250A CN 114893250 A CN114893250 A CN 114893250A CN 202210653220 A CN202210653220 A CN 202210653220A CN 114893250 A CN114893250 A CN 114893250A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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Abstract
The invention discloses a coal seam water inrush detection and plugging device and a method, wherein the device is provided with a detection hole from a coal seam to a water-bearing stratum, and the water inrush detection and plugging device comprises: the easily-dissolved body is fixedly arranged in the detection hole, and an easily-dissolved cavity with two open ends is defined in the easily-dissolved body; the shell is detachably arranged in the easy-dissolving cavity and is provided with an inlet end and an outlet end which are communicated with each other, the inlet end is arranged close to the coal seam, and the outlet end is arranged close to the aquifer; a humidity sensor mounted at the outlet end configured to detect humidity within the detection bore; a reaction assembly fixed at the outlet end configured to react with water to generate heat; a temperature sensor disposed within the reaction assembly configured to detect a temperature within the reaction assembly. The device can detect and realize detecting and shutoff gushing water, and the reliability is higher, and is with low costs.
Description
Technical Field
The invention relates to the field of coal seam water inrush detection and plugging, in particular to a coal seam water inrush detection and plugging device and a method.
Background
Coal is one of the main energy sources in China, and occupies a great position in the energy field in China. Along with the continuous improvement of coal demand, the scale of coal mining is gradually increased, and due to the complex geological conditions of coal mining, water inrush of the coal seam is likely to occur in the mining process. Therefore, how to accurately detect the water inrush of the coal seam and timely block the water inrush gradually becomes an important ring for coal mine safety mining.
In the prior art, the water storage condition in a fault can be found out by an underground three-dimensional high-density tomography technology, but the detection process is too troublesome and the cost is higher; the problem of water inrush from the working face is not completely solved. The invention mainly aims to solve the problems of water inrush detection and prevention and control, and provides an effective water inrush detection and plugging device and method aiming at the problems.
Disclosure of Invention
The technical scheme aims at the problems and requirements, and provides the device and the method for detecting and plugging water inrush of the coal seam.
One object of the present invention is to provide a coal seam water inrush detection and plugging device, which is a detection hole formed from a coal seam toward a water-bearing stratum, and comprises:
the easily-dissolved body is fixedly arranged in the detection hole, and an easily-dissolved cavity with two open ends is defined in the easily-dissolved body;
the shell is detachably arranged in the easy-dissolving cavity and is provided with an inlet end and an outlet end which are communicated with each other, the inlet end is arranged close to the coal seam, and the outlet end is arranged close to the aquifer;
a humidity sensor mounted at the outlet end configured to detect humidity within the detection bore;
a reaction assembly fixed at the outlet end configured to react with water to generate heat;
a temperature sensor disposed within the reaction assembly configured to detect a temperature within the reaction assembly.
In addition, the coal seam water inrush detection and plugging device and the method thereof can also have the following technical characteristics:
in one example of the present invention, when the temperature sensor detects that the temperature inside the reaction assembly reaches a threshold temperature, the method further comprises:
liquid carbon dioxide injected from the inlet end to the outlet end of the shell and configured to temporarily block the water inrush region by the refrigeration effect of the liquid carbon dioxide;
and quicklime is injected into the water inrush area from the easily-soluble cavity and is configured to produce calcium hydroxide through the reaction of the quicklime and water, and the calcium hydroxide reacts with liquid carbon dioxide to produce calcium carbonate so as to block the water inrush area.
In one example of the present invention, the method further comprises: a one-way valve is arranged on the upper end of the valve body,
the one-way valve is mounted in the housing and disposed between the inlet end and the outlet end and configured to enable liquid carbon dioxide to flow only from the inlet end toward the outlet end.
In one example of the present invention, the check valve includes:
the clamping groove is formed in the inner wall of the shell and extends along the extending direction of the shell;
the baffle is matched in the clamping groove and can move along the extending direction of the clamping groove;
and one end of the elastic piece is connected with the baffle, and the other end of the elastic piece is connected with the shell, so that the baffle always has a tendency to restore and resist the initial position of the slot wall of the slot under the action of the elastic force.
In one example of the present invention, the elastic member is one of a compression spring, an extension spring and a spring plate.
In one example of the invention, the reaction assembly comprises:
the reaction box is arranged at the outlet end of the shell and is provided with a filter hole communicated with the inside;
and the quick lime is accommodated in the reaction box and is configured to react with water to generate heat when water burst occurs.
In one example of the present invention, the method further comprises: the computer is used for controlling the operation of the computer,
the coal seam water inrush detector is coupled with the temperature sensor and the humidity sensor and is configured to judge whether water inrush occurs in a coal seam or not based on a temperature signal detected by the temperature sensor and a humidity signal detected by the humidity sensor.
In one example of the present invention, the fusible body is made of polycarbonate.
In one example of the present invention, the lyotropic body includes:
the body part is provided with the easy-dissolving cavity along the extending direction of the body part;
and the bulge extends along the circumferential direction of the body part from the outer circumferential wall to the direction away from the outer circumferential wall, and the outer diameter of the bulge is gradually increased from one end close to the aquifer to one side of the coal bed.
Another object of the present invention is to provide a water inrush detection and plugging method using the coal seam water inrush detection and plugging device, which comprises the following steps:
s10: arranging a detection hole from the coal seam to the aquifer direction, and installing a water inrush detection and plugging device in the detection hole;
s20: a humidity sensor of the water inrush detection and plugging device obtains a humidity signal in the detection hole, and a temperature sensor obtains a temperature signal of the reaction assembly;
s30: judging whether the coal seam has water inrush or not based on the humidity signal and the temperature signal;
s40: when water inrush occurs in the coal seam, injecting liquid carbon dioxide from the inlet end to the outlet end to temporarily plug the water inrush area;
s50: and taking out the water inrush detection and plugging device, and injecting quicklime into the detection hole, wherein the quicklime reacts with water to produce calcium hydroxide and release a large amount of heat, and the calcium hydroxide reacts with liquid carbon dioxide to produce calcium carbonate to plug the water inrush area.
Compared with the prior art, the invention has the following beneficial effects:
1. the water inrush detection device can accurately detect the underground water inrush condition, has lower detection cost compared with the existing detection device, greatly reduces the expenditure of enterprises, and is particularly suitable for the application of actual mines.
2. The invention can carry out water inrush plugging, and can carry out effective plugging if meeting the water inrush condition; wherein, the easy soluble body and the liquid carbon dioxide in the device can be temporarily blocked, and the quicklime can be injected for permanent blocking.
3. The plugging mode in the invention is more flexible, the plugging is not necessarily carried out when water inrush detection is not required, and if water inrush occurs in underground work, the plugging device and the method can be directly used for plugging.
The following description of the preferred embodiments for carrying out the present invention will be made in detail with reference to the accompanying drawings so that the features and advantages of the present invention can be easily understood.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. Wherein the drawings are only for purposes of illustrating some embodiments of the invention and are not to be construed as limiting the invention to all embodiments thereof.
FIG. 1 is a schematic diagram illustrating the location of coal seam detection sites according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a water inrush detection and plugging device according to an embodiment of the present invention;
FIG. 3 is a view of the portion of FIG. 2 from direction A;
FIG. 4 is a schematic diagram of the operation of the coal seam water inrush detection and plugging device according to the embodiment of the invention (initial state);
FIG. 5 is a schematic diagram of the operation of a coal seam water inrush detection and plugging device according to an embodiment of the present invention (liquid carbon dioxide injection);
FIG. 6 is a schematic diagram of the operation of the coal seam water inrush detection and plugging device according to the embodiment of the invention (quicklime injection);
fig. 7 is a step diagram of a coal seam water inrush detection and plugging method according to an embodiment of the invention.
List of reference numerals:
a water inrush zone 600;
a probe point 500;
a probe hole 510;
a rock formation 400;
an aqueous layer 300;
a coal seam 200;
a water burst detection and occlusion device 100;
a fusible body 10;
an easily dissolvable cavity 10A;
a body portion 11;
a boss portion 12;
a housing 20;
an inlet end 21;
an outlet end 22;
a card slot 23;
a connecting rod 24;
a humidity sensor 30;
a reaction block 40;
a reaction cassette 41;
a temperature sensor 50;
a check valve 80;
a baffle 81;
an elastic member 82;
a transmission optical fiber 90;
a through hole A;
an extension direction Y;
the circumferential direction Z.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
As shown in fig. 1, the geology is the coal seam 200, the rock stratum 400 and the aquifer 300 from bottom to top, and the detection hole 510 at the detection point 500 of the water inrush penetrates through the coal seam 200, the rock stratum 400 to the aquifer 300 in sequence.
In a coal seam 200 water inrush detection and plugging apparatus 100 according to a first aspect of the present invention, as shown in fig. 2 to 6, a detection hole 510 is opened from the coal seam 200 toward an aquifer 300, and the water inrush detection and plugging apparatus 100 includes:
an easily dissolvable body 10 fixedly installed in the detection hole 510 and defining an easily dissolvable cavity 10A with both ends open therein;
a housing 20 detachably disposed in the fusible cavity 10A and having an inlet end 21 and an outlet end 22 communicating with each other, wherein the inlet end 21 is disposed adjacent to the coal seam 200, and the outlet end 22 is disposed adjacent to the aquifer 300;
a humidity sensor 30 installed at the outlet end 22 and configured to detect humidity inside the detection hole 510;
a reaction assembly 40 secured to the outlet end 22 and configured to react with water to generate heat;
a temperature sensor 50 disposed within the reaction block 40 and configured to detect a temperature within the reaction block 40.
The specific process is as follows: firstly, the soluble body 10 is installed in the detection hole 510, then the shell 20 is connected with the soluble cavity 10A of the soluble body 10, and the inlet end 21 of the shell is close to one side of the coal seam 200, and the outlet end 22 of the shell is close to one side of the aquifer 300, wherein the humidity sensor 30, the reaction assembly 40 and the temperature sensor 50 are installed at the outlet end 22; the humidity of the detection hole 510 close to one side of the aquifer 300 is detected by the humidity sensor 30, the temperature of the reaction assembly 40 is detected by the temperature sensor 50, and whether water inrush occurs in the coal seam 200 is determined based on the humidity sensor 30 and the temperature sensor 50, wherein firstly, since the coal seam 200 has a certain humidity, the coal seam 200 cannot be determined to have water inrush after the humidity value measured by the humidity sensor 30 reaches a certain value, and moreover, the temperature detected by the temperature sensor 50 is interfered by the temperature contained in the coal seam 200, but the humidity detected by the humidity sensor 30 does not reach the water inrush standard in this case; therefore, through the combination of the humidity sensor 30 and the temperature sensor 50, a certain humidity is ensured in the detection hole 510, and the coal seam 200 can be determined to have water inrush under the condition that the reaction assembly 40 generates heat, and the water inrush area 600 is plugged after the water inrush occurs; the device can detect and realize detecting and shutoff gushing water, and the reliability is higher, and is with low costs.
It should be noted that the principle of operation of humidity sensor 30 is to measure the volume fraction of water vapor that can be contained in air at one atmosphere pressure and temperature. When detecting a water burst, the indication of the humidity sensor 30 is shown as 100%, meaning that water vapor will condense into water, and in this case, two situations will occur: in the first case: the soil is inherently relatively moist. When the water inrush device is put in, water drops and even water flow can be generated by extrusion with soil; in the second case: a water inrush condition occurs.
Therefore, when the humidity sensor detects water inrush, the humidity sensor can only roughly predict the possible water inrush condition, give an early warning prompt to the downhole operator, do not necessarily represent the true water inrush condition, and cannot accurately predict whether the water inrush condition exists. Therefore, the invention can accurately measure the water inrush condition by combining the humidity sensor, the temperature sensor and the reaction device.
The water inrush detection and plugging device can accurately detect the water inrush condition in the pit, and compared with the existing detection device, the detection cost of the invention is lower, the expenditure of enterprises is greatly reduced, and the device is particularly suitable for the application of actual mines. Secondly, the water inrush detection and plugging device can plug water inrush, and if the water inrush situation occurs, the water inrush detection and plugging device can plug water inrush effectively; wherein, the easy soluble body and the liquid carbon dioxide in the device can be temporarily blocked, and the quicklime can be injected for permanent blocking. Moreover, the water inrush detection and plugging device is more flexible, plugging is not necessarily carried out when water inrush detection is not required, and if water inrush occurs in underground work, plugging can be directly carried out by using the plugging device and the plugging method.
In one example of the present invention, when the temperature sensor 50 detects that the temperature in the reaction assembly 40 reaches a threshold temperature, the method further comprises:
that is, when water inrush occurs in the coal seam 200, liquid carbon dioxide 60 is injected from the inlet end 21 to the outlet end 22 to temporarily block the water inrush area 600; taking out the water inrush and plugging detection device, and injecting quick lime 70 into the detection hole 510, wherein the quick lime 70 reacts with water to produce calcium hydroxide and release a large amount of heat, and the calcium hydroxide reacts with liquid carbon dioxide 60 to produce calcium carbonate to plug the water inrush area 600; the water inrush area 600 can be effectively and permanently plugged by the liquid carbon dioxide 60 and the quick lime 70, and the device is high in reliability and convenient to operate.
In one example of the present invention, the method further comprises: the one-way valve 80 is arranged in the housing,
the one-way valve 80 is installed in the housing 20 and disposed between the inlet end 21 and the outlet end 22, and is configured to allow the liquid carbon dioxide 60 to flow only from the inlet end 21 toward the outlet end 22;
in other words, the liquid carbon dioxide 60 with a certain pressure can only flow from the inlet end 21 to the outlet end 22 of the housing 20, but cannot flow back from the outlet end 22 to the inlet end 21, so that the temporary sealing effect of the liquid carbon dioxide 60 is ensured.
In one example of the present invention, the check valve 80 includes:
a clamping groove 23 formed in the inner wall of the housing 20, wherein the clamping groove 23 extends along the extending direction Y of the housing 20;
a shutter 81 fitted in the card slot 23 and movable along the extending direction Y of the card slot 23;
an elastic member 82 having one end coupled to the blocking plate 81 and the other end coupled to the housing 20, and configured to make the blocking plate 81 always have a force of restoring to an initial position against the groove wall of the slot 23 under the action of an elastic force;
that is, in the initial state, the baffle 81 is abutted against the wall of the card slot 23 by the elastic member 82, so that the baffle 81 divides and seals the two sides of the housing 20 located in the card slot 23; when the liquid carbon dioxide 60 is injected into the housing 20, the carbon dioxide with a certain pressure counteracts the elastic force of the elastic member 82 to move the baffle 81 toward the outlet end 22, so as to open the check valve 80, so that the liquid carbon dioxide 60 flows toward the outlet end 22 and is injected into the water-bursting area 600, and the liquid carbon dioxide 60 temporarily blocks the water-bursting area 600. It can be understood that the size of the baffle 81 in the radial direction of the housing 20 is smaller than the maximum radial direction size of the locking groove 23 and larger than the minimum radial direction size, so that the sealing effect of the baffle 81 in the sealing state and the conducting effect of the check valve 80 in the opening state can be ensured.
In an example of the present invention, the elastic member 82 is one of a compression spring, an extension spring and a spring plate;
for example, when the elastic member 82 is a compression spring, it is disposed on a side of the blocking slot 23 close to the outlet end 22, so that the elastic force given by the compression spring to the baffle 81 always presses against a slot wall of the blocking slot 23 close to the inlet end 21;
for another example, when the elastic member 82 is an extension spring, it is disposed on a side of the locking groove 23 close to the inlet end 21, so that the elastic force given to the baffle 81 by the extension spring always abuts against a groove wall of the locking groove 23 close to the inlet end 21.
When the elastic member 82 is a spring, the implementation manner is similar to that described above, and is not specifically described here, as long as the position of the baffle 81 can be defined.
In one example of the present invention, the reaction assembly 40 includes:
a reaction box 41 installed at the outlet end 22 of the housing 20, wherein the reaction box 41 has a filter hole communicated with the inside;
specifically, the reaction cassette 41 is fixedly connected to the inner wall of the housing 20 by a connecting rod 24, for example, welding, fastening, etc.; preferably, the connection rods 24 include a plurality of connection rods, and are spaced apart from each other in the circumferential direction Z of the reaction cassette 41, and a through hole a is formed between two adjacent connection rods 24, and the liquid carbon dioxide 60 is injected from the through hole a to the water inrush region 600. The reaction box 41 and the shell 20 can also be connected by screw threads, at this time, a ring plate is fixedly connected on the periphery of the plurality of connecting rods 24, an external screw thread is arranged on the ring plate, and an internal screw thread matched with the external screw thread of the ring plate is arranged on the inner wall of the shell 20.
When water inrush occurs, water enters the reaction box 41 after being filtered through the filter holes, reacts with the quick lime 70 to generate heat, and the temperature sensor 50 detects the temperature signal and combines the humidity signal detected by the humidity sensor 30 to determine whether water inrush occurs in the coal seam 200; impurities in water quality can be effectively filtered by arranging the filter holes, and the influence on the reaction between water and the quicklime 70 is avoided.
In one example of the present invention, the method further comprises: the computer is used for controlling the operation of the computer,
coupled to the temperature sensor 50 and the humidity sensor 30, and configured to determine whether water inrush occurs in the coal seam 200 based on a temperature signal detected by the temperature sensor 50 and a humidity signal detected by the humidity sensor 30;
the computer is connected with the temperature sensor 50 and the humidity sensor 30 through the transmission optical fiber 90, that is, the computer processes the temperature signal and the humidity information, when the humidity measured by the humidity sensor 30 reaches the specified humidity, the temperature measured by the temperature sensor 50 reaches the specified temperature, and then the occurrence of water inrush in the coal seam 200 is judged; for example, an alarm signal may be generated by a computer.
It should be noted that the transmission fiber 90 is disposed along the extending direction Y of the housing 20, and the baffle 81 passing through the check valve 80 extends into the reaction assembly 40 and is coupled to the temperature sensor 50; the baffle 81 is provided with a mounting hole, the transmission optical fiber 90 penetrates through the mounting hole, and a sealing ring is arranged between the mounting hole and the transmission optical fiber 90 to ensure the sealing performance of the check valve 80.
It should be noted that, because the baffle 81 needs to move along the extending direction of the clamping groove 23, when the transmission optical fiber 90 is installed, a certain margin is left on the lengths of the transmission optical fibers 90 on the two sides of the baffle 81, so as to satisfy the requirement that the baffle 81 drives the transmission optical fiber 90 to move in the moving process and adjust the margin on the length, and avoid the one-way valve from being stuck or giving excessive pulling force to the transmission optical fiber 90 to damage the transmission optical fiber 90.
In one example of the present invention, the fusible body 10 is made of polycarbonate;
a large amount of heat is generated when the quicklime 70 reacts with the liquid carbon dioxide 60, the temperature is higher than 300 deg.c, and the polycarbonate is melted at the high temperature, thereby facilitating the plugging of the water inrush area 600.
In one example of the present invention, the fusible body 10 includes:
a main body 11, the easy dissolving chamber 10A being provided along an extending direction Y of the main body 11;
a protrusion 12 extending from the outer peripheral wall in a direction away from the outer peripheral wall along the circumferential direction Z of the body 11, wherein an outer diameter of the protrusion 12 gradually increases from an end near the aquifer 300 toward a side of the coal seam 200;
specifically, the maximum radial outer dimension of the easily soluble body 10 (that is, the outer diameter of the body 11 is slightly smaller than the inner diameter of the detection hole 510, and the outer diameter of the protrusion 12 is larger than the inner diameter of the detection hole) is larger than the inner diameter of the detection hole 510, because the easily soluble body 10 is subjected to the impact force of water in case of water inrush of the detection hole 510, the easily soluble body 10 can be conveniently embedded into the detection hole 510 through the protrusion 12, so that the easily soluble body 10 is fixed in the detection hole 510, and the easily soluble body 10 is prevented from being flushed out of the detection hole 510 by the inrush water; this structure can effectively fix the fusible body 10 in the detection hole 510, facilitating the installation of the housing 20.
In order to facilitate the installation of the fusible body 10, the material of the fusible body 10 is preferably polycarbonate, which is a plastic material having a certain elasticity and capable of being elastically deformed to a certain extent, so that the radial dimension of the protrusion 12 is larger than the inner diameter dimension of the detection hole 510, and the insertion of the fusible body 10 is not affected.
Preferably, the protruding portion 12 includes a plurality of protruding portions, and is disposed at intervals along the extending direction Y of the main body portion 11; the provision of a plurality of projections 12 provides a sealing function while allowing the fusible body 10 to be more reliably fitted into the detection hole 510.
In one example of the present invention, the housing 20 and the fusible body 10 are coupled by a screw thread;
an external thread is arranged on the outer peripheral wall of the shell 20;
the inner wall of the easily dissolving cavity 10A is provided with an internal thread matched with the external thread;
the housing 20 can be securely fixed to the fusible body 10 by the above-described screw coupling, and the housing 20 is prevented from being punched out of the detection hole 510 in the event of a water burst.
A water inrush detection and shutoff method using the coal seam 200 water inrush detection and shutoff device 100 according to the second aspect of the present invention, as shown in fig. 7, includes the steps of:
s10: a detection hole 510 is formed from the coal seam 200 towards the aquifer 300, and the water inrush detection and plugging device 100 is installed in the detection hole 510;
s20: the humidity sensor 30 of the water inrush detection and plugging device 100 obtains a humidity signal in the detection hole 510, and the temperature sensor 50 obtains a temperature signal of the reaction assembly 40;
s30: judging whether the coal seam 200 has water inrush or not based on the humidity signal and the temperature signal;
s40: when water inrush occurs in the coal seam 200, injecting liquid carbon dioxide 60 from the inlet end 21 to the outlet end 22 to temporarily block the water inrush area 600; when the coal seam 200 has no water inrush, returning to the step S20 to continue to detect the humidity signal and the temperature signal;
s50: and taking out the water inrush detection and plugging device 100, and injecting quick lime 70 into the detection hole 510, wherein the quick lime 70 reacts with water to produce calcium hydroxide and release a large amount of heat, and the calcium hydroxide reacts with liquid carbon dioxide 60 to produce calcium carbonate to plug the water inrush area 600.
That is, it is reasonable to drill the measuring hole 510 at the place where the coal seam 200 is to be detected whether water inrush occurs, and arrange the water inrush detection and plugging detection device in the detecting hole 510; when the water inrush occurs at the detected position, the humidity sensor 30 of the water inrush detection and plugging detection device changes rapidly, then water enters the reaction box 41 through the filter hole to react with the quick lime 70 to generate a large amount of heat, the heat is transmitted to the temperature sensor 50, when the temperature of the temperature sensor 50 is higher than 300 ℃, the temperature sensor 50 and the humidity sensor 30 are rapidly transmitted to the computer through the transmission optical fiber 90, the computer can rapidly process data, if the water inrush occurs, an alarm is rapidly sent out, and permanent plugging is performed, namely when the coal seam 200 has water inrush, liquid carbon dioxide 60 is injected from the inlet end 21 to the outlet end 22 to temporarily plug the water inrush area 600; and taking out the water inrush detection device, and injecting quick lime 70 into the detection hole 510, wherein the quick lime 70 reacts with water to produce calcium hydroxide and release a large amount of heat, and the calcium hydroxide reacts with liquid carbon dioxide 60 to produce calcium carbonate to plug the water inrush area 600. The method can effectively block the water inrush area 600, and is simple to operate and high in reliability.
Firstly, the water inrush detection method can accurately detect the underground water inrush condition, and compared with the existing detection device, the detection cost of the invention is lower, the expenditure of enterprises is greatly reduced, and the method is particularly suitable for the application of actual mines. Secondly, the plugging method can be used for plugging water inrush, and if the water inrush condition occurs, the invention can be used for effectively plugging; wherein, the easy soluble body and the liquid carbon dioxide in the device can be temporarily blocked, and the quicklime can be injected for permanent blocking. Moreover, the plugging mode is more flexible, plugging is not necessarily carried out when water inrush detection is not required, and if water inrush occurs in underground work, the plugging device and the plugging method can be directly used for plugging.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention discloses a method for detecting and plugging water inrush of a coal seam 200, which comprises the following steps: when the coal seam 200 water inrush detection is carried out, firstly, a hole with the diameter of 50mm and the length of 20m is drilled, and then the water inrush detection and plugging device 100 is placed into the detection hole 510; when the detected position has water inrush, the humidity sensor 30 of the water inrush detection device changes rapidly, then water enters the reaction box 41 through the filter hole and reacts with the quick lime 70 to generate a large amount of heat, the heat is transmitted to the temperature sensor 50, when the temperature of the temperature sensor 50 is higher than 300 ℃, the temperature sensor 50 and the humidity sensor 30 can be rapidly transmitted to the computer through the transmission optical fiber 90, the computer can rapidly process data, and after the computer analyzes the data, whether the water inrush of the coal seam 200 occurs at the rear part of the coal seam 200 can be obtained. If water inrush occurs, rapidly introducing liquid carbon dioxide 60 into the hole, wherein the leakage caliber of the liquid carbon dioxide 60 is 6mm, the inlet pressure of the liquid carbon dioxide 60 is 2.4MPa, and at the moment, the refrigeration influence range of the liquid carbon dioxide 60 can reach 80mm and is enough for temporarily plugging a designated area; temporarily plugging by utilizing the refrigeration effect of the liquid carbon dioxide 60, melting the soluble layer at the periphery of the water inrush detection device, and taking out the water inrush detection device; then introducing quicklime 70, reacting the quicklime 70 with water to generate calcium hydroxide, releasing a large amount of heat, and then generating calcium carbonate by the calcium hydroxide and liquid carbon dioxide 60 for permanent plugging. The method can effectively block the hole with the length of 20 m.
Although exemplary embodiments of the coal seam water inrush detection and plugging device 100 and method of the present invention have been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that various modifications and changes can be made to the specific embodiments described above without departing from the concept of the present invention, and various combinations of the various features and structures described in the present invention can be made without departing from the scope of the present invention as defined in the appended claims.
Claims (10)
1. A coal seam water inrush detection and shutoff device, characterized in that, by the detection hole (510) that coal seam (200) was seted up towards aquifer (300) direction, water inrush detection and shutoff device (100) includes:
a fusible body (10) fixedly installed in the detection hole (510) and defining a fusible cavity (10A) with two open ends therein;
a housing (20) detachably disposed in the fusible cavity (10A) and having an inlet end (21) and an outlet end (22) communicating with each other, wherein the inlet end (21) is disposed adjacent to the coal seam (200), and the outlet end (22) is disposed adjacent to the aquifer (300);
a humidity sensor (30) mounted at the outlet end (22) configured to detect humidity within the detection bore (510);
a reaction assembly (40) secured at the outlet end (22) and configured to react with water to generate heat;
a temperature sensor (50) disposed within the reaction block (40) configured to detect a temperature within the reaction block (40).
2. The coal seam water inrush detection and shutoff device of claim 1,
when the temperature sensor (50) detects that the temperature within the reaction block (40) reaches a threshold temperature, further comprising:
liquid carbon dioxide (60) injected from the inlet end (21) to the outlet end (22) of the housing (20) and configured to temporarily block the water inrush region (600) by the refrigeration effect of the liquid carbon dioxide (60);
and quicklime (70) injected into the water inrush area (600) from the easily soluble cavity (10A) and configured to plug the water inrush area (600) by producing calcium hydroxide through reaction of the quicklime (70) with water and producing calcium carbonate through reaction of the calcium hydroxide with liquid carbon dioxide (60).
3. The coal seam water inrush detection and shutoff device of claim 2,
further comprising: a one-way valve (80),
the one-way valve (80) is mounted within the housing (20) and disposed between the inlet end (21) and the outlet end (22) and configured to allow liquid carbon dioxide (60) to flow only from the inlet end (21) toward the outlet end (22).
4. The coal seam water inrush detection and shutoff device of claim 3,
the check valve (80) comprises:
the clamping groove (23) is formed in the inner wall of the shell (20), and the clamping groove (23) extends along the extending direction (Y) of the shell (20);
a baffle (81) fitted within the slot (23) and movable along the direction of extension (Y) of the slot (23);
and the elastic piece (82) is connected with the baffle (81) at one end and connected with the shell (20) at the other end, and is configured to ensure that the baffle (81) always has a tendency of restoring and resisting the initial position of the groove wall of the clamping groove (23) under the action of elastic force.
5. The coal seam water inrush detection and shutoff device of claim 4,
the elastic piece (82) is one of a compression spring, an extension spring and an elastic sheet.
6. The coal seam water inrush detection and shutoff device of claim 1,
the reaction assembly (40) comprises:
the reaction box (41) is arranged at the outlet end (22) of the shell (20), and the reaction box (41) is provided with a filter hole communicated with the inside;
and quicklime (70) accommodated in the reaction box (41) and configured such that when water inrush occurs, the quicklime (70) reacts with water to generate heat.
7. The coal seam water inrush detection and shutoff device of claim 1,
further comprising: the computer is used for controlling the operation of the computer,
the coal seam water inrush detector is coupled with the temperature sensor (50) and the humidity sensor and is configured to judge whether water inrush occurs in the coal seam (200) or not based on a temperature signal detected by the temperature sensor (50) and a humidity signal detected by the humidity sensor (30).
8. The coal seam water inrush detection and shutoff device of claim 1,
the fusible body (10) is prepared from polycarbonate.
9. The coal seam water inrush detection and shutoff device of claim 1,
the fusible body (10) comprises:
a body portion (11), the easy-dissolving chamber (10A) being provided along an extending direction (Y) of the body portion (11);
and a protrusion (12) extending from the outer peripheral wall thereof in a direction away from the outer peripheral wall along the circumferential direction (Z) of the body portion (11), wherein the outer diameter of the protrusion (12) gradually increases from an end close to the aquifer (300) toward the coal seam (200).
10. A water inrush detection and shutoff method using the coal seam water inrush detection and shutoff device according to any one of claims 1 to 9, comprising the steps of:
s10: a detection hole (510) is formed from the coal seam (200) towards the aquifer (300), and the water inrush detection and plugging device (100) is arranged in the detection hole (510);
s20: a humidity sensor (30) of the water inrush detection and blocking device obtains a humidity signal in a detection hole (510), and a temperature sensor (50) obtains a temperature signal of a reaction assembly (40);
s30: determining whether water inrush occurs in the coal seam (200) based on the humidity signal and the temperature signal;
s40: when water inrush occurs in the coal seam (200), injecting liquid carbon dioxide (60) from the inlet end (21) to the outlet end (22) to temporarily block a water inrush area (600);
s50: and taking out the water inrush detection and plugging device (100), and injecting quick lime (70) into the detection hole (510), wherein the quick lime (70) reacts with water to produce calcium hydroxide and release a large amount of heat, and the calcium hydroxide reacts with liquid carbon dioxide (60) to produce calcium carbonate to plug the water inrush area (600).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115405255A (en) * | 2022-08-23 | 2022-11-29 | 中国石油天然气集团有限公司 | Phase inversion water-plugging control gas production method for high-water-content gas well |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484796A (en) * | 2016-01-04 | 2016-04-13 | 中国矿业大学(北京) | Underground flood alarm system based on temperature, humidity and image monitoring equipment |
| CN105484798A (en) * | 2016-01-04 | 2016-04-13 | 中国矿业大学(北京) | Underground flood alarm method based on temperature, humidity and image monitoring |
| CN206668252U (en) * | 2017-02-10 | 2017-11-24 | 山东唐口煤业有限公司 | A kind of seat earth aquifer water pressure monitoring system |
| CN113203433A (en) * | 2021-03-31 | 2021-08-03 | 华北科技学院(中国煤矿安全技术培训中心) | Coal mine underground water inrush early warning monitoring device and method |
| CN113309575A (en) * | 2021-06-25 | 2021-08-27 | 中国矿业大学 | Coal mine underground water content real-time monitoring system and method based on nuclear magnetic sensor |
-
2022
- 2022-06-09 CN CN202210653220.9A patent/CN114893250B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105484796A (en) * | 2016-01-04 | 2016-04-13 | 中国矿业大学(北京) | Underground flood alarm system based on temperature, humidity and image monitoring equipment |
| CN105484798A (en) * | 2016-01-04 | 2016-04-13 | 中国矿业大学(北京) | Underground flood alarm method based on temperature, humidity and image monitoring |
| CN206668252U (en) * | 2017-02-10 | 2017-11-24 | 山东唐口煤业有限公司 | A kind of seat earth aquifer water pressure monitoring system |
| CN113203433A (en) * | 2021-03-31 | 2021-08-03 | 华北科技学院(中国煤矿安全技术培训中心) | Coal mine underground water inrush early warning monitoring device and method |
| CN113309575A (en) * | 2021-06-25 | 2021-08-27 | 中国矿业大学 | Coal mine underground water content real-time monitoring system and method based on nuclear magnetic sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115405255A (en) * | 2022-08-23 | 2022-11-29 | 中国石油天然气集团有限公司 | Phase inversion water-plugging control gas production method for high-water-content gas well |
| CN115405255B (en) * | 2022-08-23 | 2024-04-26 | 中国石油天然气集团有限公司 | Phase inversion water-plugging control gas production method for high-water-content gas well |
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