CN220769551U - Goaf spontaneous combustion monitoring device based on layer-penetrating drilling arrangement - Google Patents
Goaf spontaneous combustion monitoring device based on layer-penetrating drilling arrangement Download PDFInfo
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- CN220769551U CN220769551U CN202321576483.0U CN202321576483U CN220769551U CN 220769551 U CN220769551 U CN 220769551U CN 202321576483 U CN202321576483 U CN 202321576483U CN 220769551 U CN220769551 U CN 220769551U
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 36
- 230000002269 spontaneous effect Effects 0.000 title claims abstract description 36
- 238000005553 drilling Methods 0.000 title claims abstract description 31
- 238000012806 monitoring device Methods 0.000 title claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims abstract description 43
- 238000005070 sampling Methods 0.000 claims abstract description 30
- 239000002002 slurry Substances 0.000 claims abstract description 30
- 238000007599 discharging Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 239000000523 sample Substances 0.000 claims abstract description 15
- 238000002347 injection Methods 0.000 claims abstract description 4
- 239000007924 injection Substances 0.000 claims abstract description 4
- 238000007569 slipcasting Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 238000005422 blasting Methods 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 18
- 239000011435 rock Substances 0.000 abstract description 4
- 238000004880 explosion Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a goaf spontaneous combustion monitoring device based on layer-penetrating drilling arrangement, which comprises a monitoring pipe, a grouting pipe, a slurry discharging pipe and a sampling pump, wherein the monitoring pipe is internally provided with the sampling pipe and a cable, the end part of the cable is provided with a temperature probe, the tail end of the monitoring pipe is provided with a flower pipe, the grouting pipe is sequentially connected with a front bag, a middle bag and a rear bag from an orifice inwards, the rear bag is close to the flower pipe, the drilling adopts a hole sealing mode of three-blocking-one-injection, grouting is carried out between the front bag and the middle bag to form an effective hole sealing section, the slurry discharging pipe penetrates through an outer bag, the orifice of the slurry discharging pipe is close to one side of the middle bag, and the sampling pump is connected with the sampling pipe. The device utilizes the through-layer drilling as a protection structure, avoids the risk of damaging the monitoring pipe by the rock caving of the coal seam roof, improves the reliability and the effectiveness of the device, and realizes the spontaneous combustion monitoring function in the goaf.
Description
Technical Field
The utility model relates to the field of spontaneous combustion monitoring of coal mines, in particular to a goaf spontaneous combustion monitoring device based on layer-penetrating drilling arrangement.
Background
Spontaneous combustion of coal is one of the main causes of coal mine accidents. According to statistics, more than 70% of coal mines in China have natural ignition risks, and fire disasters caused by spontaneous combustion of coal account for more than 90% of total mine fires. Along with the high-speed development of coal mining technology, the coal mine production trend is efficient and intensive, the large-mining-height working face is more and more, the production efficiency is greatly improved, meanwhile, the problems such as serious air leakage and large coal loss of a goaf are also generated, and conditions are provided for spontaneous combustion of the goaf coal. Meanwhile, as the mining depth is continuously increased, the coal is more easily oxidized due to the increase of the temperature of the raw rock, and the spontaneous combustion risk of the residual coal in the goaf is further increased.
However, due to the complex conditions of the goaf, people cannot directly observe the interior of the goaf, and in addition, the fire source in the goaf is hidden, so that great difficulty exists in correctly predicting and forecasting spontaneous combustion of residual coal. At present, a beam tube monitoring system is generally adopted by coal mine enterprises to embed in tunnels at two ends of a working face, natural ignition conditions of a goaf are judged by analyzing gas components in the goaf, and spontaneous combustion three zones are divided, but the existing beam tube monitoring system exposes a plurality of defects and defects in the actual use process, for example, the method can only detect two (machine channels and air channels) areas of the goaf and cannot monitor the spontaneous combustion conditions in the goaf, the ignition position cannot be accurately and rapidly judged, the internal environment of the goaf is complex, the rock collapsed by a top plate is extremely easy to cause deformation and damage of the beam tube, so that the monitoring system cannot monitor spontaneous combustion phenomena in the first time and perform fire prevention and extinguishment work, and the spontaneous combustion prevention and control efficiency of the goaf is low. Therefore, the development of the goaf spontaneous combustion monitoring device realizes the spontaneous combustion monitoring in the goaf, and has important engineering value for preventing and controlling spontaneous combustion of the coal mine.
Disclosure of Invention
Aiming at the defects and shortcomings of the beam tube monitoring system used for spontaneous combustion monitoring of the existing coal mine goaf, the utility model aims to provide the spontaneous combustion monitoring device of the goaf based on the arrangement of the through-layer drilling.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a goaf spontaneous combustion monitoring device based on layer-penetrating drilling arrangement, which comprises a monitoring pipe, a grouting pipe, a slurry discharging pipe and a sampling pump, wherein the monitoring pipe is internally provided with the sampling pipe and a cable, the end part of the cable is provided with a temperature probe, the tail end of the monitoring pipe is provided with a flower pipe, the grouting pipe is sequentially connected with a front bag, a middle bag and a rear bag from an orifice inwards, the rear bag is close to the flower pipe, the slurry discharging pipe penetrates through the outer bag, the orifice of the slurry discharging pipe is close to one side of the middle bag, and the sampling pump is connected with the sampling pipe.
Preferably, the grouting pipe, the slurry discharging pipe and the sampling pipe are all provided with ball valves outside the layer penetrating drill holes.
Preferably, the part of the grouting pipe connected with the front bag, the middle bag and the rear bag is provided with a one-way valve, and the part of the grouting pipe positioned between the front bag and the middle bag is provided with a blasting valve.
Preferably, the flower pipe and the monitoring pipe are connected through threads, and the flower pipe and the monitoring pipe are sealed through polyurethane.
Preferably, the monitoring pipe, the grouting pipe and the slurry discharging pipe are fixed in the through-layer drilling hole in a hole sealing mode of three-blocking-one grouting, namely grouting is carried out between the front bag and the middle bag, an effective hole sealing section is formed, and grouting is not carried out between the middle bag and the rear bag.
Preferably, the temperature probe is a copper tube with one end closed and one end open, a temperature sensor is arranged in the copper tube, and the temperature sensor is connected with a cable in the monitoring tube and seals the opening of the temperature probe through epoxy resin.
Preferably, the monitoring pipe, the slurry discharging pipe and the flower pipe are PVC pipes, and the slurry injecting pipe is a pressure-resistant hose.
The utility model has the following beneficial effects:
A. according to the utility model, the spontaneous combustion monitoring pipe of the goaf is arranged by using the through-layer drilling as a protection structure, so that the risk of damaging the monitoring pipe by the rock collapse of the coal seam roof is avoided, and the reliability and the effectiveness of the device are improved;
B. the hole sealing mode of three plugs and one injection is adopted, on one hand, an effective hole sealing section is formed by grouting between the front bag and the middle bag, so that the hole sealing effect of the through-layer drilling holes is guaranteed, on the other hand, the space in the through-layer drilling holes is larger, in order to ensure that gas samples collected by the sampling pipe come from a goaf, the rear bag is arranged on one side close to the flower pipe, and the reliability of gas sample collection is guaranteed;
C. the gas sample of the goaf and the temperature probe are comprehensively collected by using the sampling tube to monitor the temperature of the goaf, and the comparison analysis of the two monitoring results can more accurately judge the natural ignition condition in the goaf;
D. the spontaneous combustion monitoring points of the goaf are arranged by using the through-layer drilling holes, so that a reliable method and a reliable technical condition are provided for spontaneous combustion monitoring in the goaf.
Drawings
FIG. 1 is a schematic view of a device according to the present utility model;
FIG. 2 is a schematic view of a portion of the floral tube of FIG. 1;
FIG. 3 is a radial cross-sectional view of a station arrangement of the present utility model;
the device comprises a 1-layer penetrating drill, a 2-flower pipe, a 3-temperature probe, 4-polyurethane, a 5-sampling pipe, a 6-rear bag, a 7-middle bag, an 8-front bag, a 9-monitoring pipe, a 10-cable, an 11-ball valve, a 12-slurry discharging pipe, a 13-slurry injecting pipe, a 14-explosion valve, a 15-one-way valve, 16-epoxy resin, a 17-temperature sensor and an 18-sampling pump.
Detailed Description
The following detailed description of the utility model will be further described with reference to the drawings and examples, it being apparent that the described examples are only some, but not all, of the examples of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1:
referring to fig. 1 to 3, the utility model provides a goaf spontaneous combustion monitoring device based on a layer-penetrating drilling arrangement, which comprises a monitoring pipe 9, a grouting pipe 13, a slurry discharging pipe 12 and a sampling pump 18. Ball valves 11 are arranged outside the through-layer drilling holes 1 of the sampling pipe 5, the grouting pipe 13 and the slurry discharging pipe 12 and are used for controlling the opening and closing of the sampling pipe 5, the grouting pipe 13 and the slurry discharging pipe 12. The monitoring tube 9 is internally provided with the sampling tube 5 and the cable 10, the end part of the cable 10 is connected with the temperature probe 3, the temperature probe 3 is a copper tube with one closed end and one open end, a temperature sensor 17 is arranged in the copper tube and used for monitoring goaf temperature data, the temperature sensor 17 is connected with the cable 10 in the monitoring tube 9 and seals the opening part of the temperature probe 3 through the epoxy resin 16, so that the damage of the temperature sensor 17 due to water accumulation of the through-layer drilling 1 is prevented. The monitoring pipe 9 is provided with the floral tube 2 at the end, floral tube 2 and monitoring pipe 9 pass through threaded connection, pack polyurethane 4 between floral tube 2 and the monitoring pipe 9, be used for fixed sampling pipe 5 and cable 10 on the one hand, on the other hand prevent that monitoring pipe 9 from switching on with the atmosphere, ensure that the gas sample of gathering comes from the collecting space area. The utility model provides a device for automatically injecting fire in the coal seam, including the front pocket 8, well pocket 7 and back pocket 6, the slip casting pipe 13 is connected with front pocket 8, well pocket 7 and back pocket 6 by the drill way of drill way inside, and monitor pipe 9, slip casting pipe 13 and row thick liquid pipe 12 are fixed in perforating hole 1 through the hole sealing mode of "three stifled one notes", the part that slip casting pipe 13 is connected with front pocket 8, well pocket 7 and back pocket 6 is provided with check valve 15 for to the slip casting in the pocket, prevent that thick liquid backward flow from leading to perforating hole 1 shutoff effect not good, the part that slip casting pipe 13 is located between front pocket 8 and well pocket 7 is connected with blast valve 14, and thick liquid is carried out the slip casting by blast valve 14 to the drilling space between front pocket 8 and well pocket 7 after the pressure of slip casting pipe 13 reaches the pressure of the activation of blast valve 14, forms effective hole sealing section, does not carry out the slip casting between well pocket 7 and back pocket 6, because perforating hole 1 inner space is great, in order to avoid the gas that 5 gathers from perforating hole 1, to produce the influence to the monitoring of the inside actual spontaneous combustion fire state in the goaf, back pocket 6 should be arranged as close to the flower pipe 2 as possible. The slurry discharging pipe 12 penetrates through the outer bag, the pipe orifice of the slurry discharging pipe 12 is close to one side of the middle bag 7, when slurry enters the hole sealing section through the explosion valve 14, gas in the hole sealing section is discharged through the slurry discharging pipe 12, and when the slurry discharging pipe 12 gushes out of the slurry, grouting is stopped. The sampling pump 18 is connected with the sampling tube 5 and is used for collecting goaf gas.
When the device is used, after the goaf spontaneous combustion monitoring device is assembled, the goaf spontaneous combustion monitoring device is deeply penetrated into the through-layer drilling hole 1, and the flower pipe is as close to the upper end of the through-layer drilling hole 1 as possible but cannot extend out of the through-layer drilling hole 1. The ball valve 11 on the grouting pipe 13 is opened, grout is injected into the front bag 8, the middle bag 7 and the rear bag 6 through the one-way valve 15 on the grouting pipe 13 to enable the bags to expand rapidly, the outer diameters of the front bag 8, the middle bag 7 and the rear bag 6 are fastened on the hole wall, and meanwhile the functions of fixing the monitoring pipe 9, the grouting pipe 13 and the slurry discharging pipe 12 are achieved. The continuous injection of the slurry leads to the gradual increase of the pressure of the grouting pipe 13, when the pressure is higher than the starting pressure of the explosion valve 14, the explosion valve 14 is opened, the slurry can be injected through the drilling space between the front bag 8 and the middle bag 7 to form an effective hole sealing section, the ball valve 11 on the grouting pipe 12 is opened in the grouting process of the hole sealing section to discharge air in the hole sealing section, the ball valve 11 on the grouting pipe 12 and the grouting pipe 13 is closed until the grouting pipe 12 gushes out of the slurry, and the grouting is stopped. After hole sealing is completed, the sampling tube 5 is connected through the sampling pump 18 to extract gas in the goaf for analysis, and the natural ignition state of the goaf is judged by combining temperature data acquired by the temperature sensor 17, so that the goaf spontaneous combustion monitoring function is realized.
Example 2:
the main structure of this embodiment is the same as that of embodiment 1, wherein the monitoring tube 9, the sampling tube 5, the slurry discharging tube 12 and the flower tube 2 are all PVC tubes, and the grouting tube 13 is a pressure-resistant hose.
Example 3:
the main structure of the embodiment is the same as that of the embodiment 1, wherein the sampling tube 5 can be used for draining, and the accumulated water in the through-layer drilling hole 1 can be drained by opening the ball valve 11 on the sampling tube 5.
The above embodiments are only for illustrating the present utility model, but not for limiting the scope of the present utility model, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present utility model should be included in the scope of the present utility model.
Claims (7)
1. Goaf spontaneous combustion monitoring devices based on wearing layer drilling is arranged, a serial communication port, including monitor tube (9), slip casting pipe (13), row's thick liquid pipe (12) and sampling pump (18), arrange sampling pipe (5) and cable (10) in monitor tube (9), cable (10) tip is equipped with temperature probe (3), monitor tube (9) end is provided with colored pipe (2), slip casting pipe (13) have inwards connected gradually preceding bag (8), well bag (7) and back bag (6) by the drill way, and back bag (6) are close to colored pipe (2), outer bag is passed in row thick liquid pipe (12), and row thick liquid pipe (12) mouth of pipe is close to well bag (7) one side, sampling pump (18) are connected with sampling pipe (5).
2. Goaf spontaneous combustion monitoring device based on a through-layer drilling arrangement as claimed in claim 1, characterized in that the grouting pipe (13), the slurry discharging pipe (12) and the sampling pipe (5) are all provided with ball valves (11) outside the through-layer drilling (1).
3. Goaf spontaneous combustion monitoring device based on a through-layer drilling arrangement as claimed in claim 1, characterized in that the part of the grouting pipe (13) connected with the front bag (8), the middle bag (7) and the rear bag (6) is provided with a one-way valve (15), and the part of the grouting pipe (13) between the front bag (8) and the middle bag (7) is provided with a blasting valve (14).
4. Goaf spontaneous combustion monitoring device based on a through-layer drilling arrangement as claimed in claim 1, characterized in that the flowtube (2) and the monitoring tube (9) are connected through threads, and the flowtube (2) and the monitoring tube (9) are sealed through polyurethane (4).
5. Goaf spontaneous combustion monitoring device based on layer-penetrating drilling arrangement according to claim 1, characterized in that the monitoring tube (9), grouting tube (13) and slurry discharging tube (12) are fixed in the layer-penetrating drilling (1) through a hole sealing mode of three plugs and one injection, namely grouting is carried out between the front bag (8) and the middle bag (7) to form an effective hole sealing section, and grouting is not carried out between the middle bag (7) and the rear bag (6).
6. Goaf spontaneous combustion monitoring device based on layer-penetrating drilling arrangement according to claim 1, characterized in that the temperature probe (3) is a copper tube with one end closed and one end open, a temperature sensor (17) is arranged in the copper tube, the temperature sensor (17) is connected with a cable (10) in the monitoring tube (9), and the opening of the temperature probe (3) is sealed by epoxy resin (16).
7. The goaf spontaneous combustion monitoring device based on the through-layer drilling arrangement according to claim 1 is characterized in that the monitoring pipe (9), the slurry discharging pipe (12) and the flower pipe (2) are PVC pipes, and the slurry injecting pipe (13) is a pressure-resistant hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321576483.0U CN220769551U (en) | 2023-06-20 | 2023-06-20 | Goaf spontaneous combustion monitoring device based on layer-penetrating drilling arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321576483.0U CN220769551U (en) | 2023-06-20 | 2023-06-20 | Goaf spontaneous combustion monitoring device based on layer-penetrating drilling arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220769551U true CN220769551U (en) | 2024-04-12 |
Family
ID=90615378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321576483.0U Active CN220769551U (en) | 2023-06-20 | 2023-06-20 | Goaf spontaneous combustion monitoring device based on layer-penetrating drilling arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220769551U (en) |
-
2023
- 2023-06-20 CN CN202321576483.0U patent/CN220769551U/en active Active
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