CN214836257U - Extraction drilling hole failure hole sealing processing apparatus - Google Patents
Extraction drilling hole failure hole sealing processing apparatus Download PDFInfo
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- CN214836257U CN214836257U CN202121155997.XU CN202121155997U CN214836257U CN 214836257 U CN214836257 U CN 214836257U CN 202121155997 U CN202121155997 U CN 202121155997U CN 214836257 U CN214836257 U CN 214836257U
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Abstract
The utility model discloses an extract drilling inefficacy hole sealing processing apparatus, including a bag, No. two bags, a slip casting pipe, a hole sealing pipe, a slip casting pipe passes a bag, and a hole sealing pipe runs through a bag and No. two bags, forms first slip casting section between a bag and No. two bags, extract drilling inefficacy hole sealing processing apparatus still includes No. three bags, No. two slip casting pipes and No. two hole sealing pipes, and No. three bags are fixed on No. two hole sealing pipes, and No. two hole sealing pipes run through from the inside of a hole sealing pipe to send No. two bags to the one end that leans on to the drilling hole bottom, form the second slip casting section between No. two bags and No. three bags, and No. two slip casting pipes run through from the inside of a hole sealing pipe until the second slip casting section, are located and are provided with the second blast valve on No. two slip casting pipes between the second slip casting section; the utility model discloses utilize colliery for the hole sealing grouting pump slip casting to accomplish the secondary shutoff, save resource and easy operation.
Description
Technical Field
The utility model relates to a colliery gas takes out and adopts technical field, especially a take out and adopt drilling inefficacy hole sealing processing apparatus.
Background
Gas disasters frequently occur in coal mines in China, and the most fundamental measure for controlling the gas disasters of the coal mines is gas extraction. Due to the influences of ground stress, mining stress, coal seam creep and the like, the gas extraction drill hole is often subjected to hole sealing failure, so that air leaks into the gas extraction drill hole, the concentration of extracted gas is reduced, and the gas extraction effect is reduced. Although the two-plugging one-injection hole sealing process widely used in coal mines in China improves the hole sealing quality and the extraction effect of gas extraction drill holes to a certain extent, due to the restriction of factors such as site conditions, hole sealing personnel, hole sealing parameters and the like, after the gas is extracted from the drill holes for a period of time (several days or dozens of days), one part of the drill holes are subjected to hole sealing failure, a large amount of air enters the extraction drill holes through the hole sealing section, the extraction effect is reduced, the standard reaching time of the gas extraction is prolonged, and even the standard reaching of the gas extraction cannot be realized. How to deal with the drill hole that became invalid realizes the drill hole secondary seal is the key that improves coal mine gas drainage effect, is the technological problem that awaits solution urgently. In response to these problems, some patents propose solutions and methods, such as: the invention patent of China, patent number CN 109339736A, No. 2019, No. 02, No. 15, discloses a solid-liquid two-phase hole sealing device and process for a gas extraction drilled hole, and provides a treatment method for sealing holes by using three bags; the invention patent of China is 09.21.2018 discloses a three-plugging two-injection hole sealing device for coal mine gas extraction drilling with publication number CN 207892585U, and provides a processing method for simultaneously grouting two hole sealing sections by adopting three-plugging two-injection, and the invention patent of China is 04.2020.08. 111485937A, discloses a method for safely sealing a gas extraction drilling by utilizing polyurethane, and provides an arrangement method for alternately connecting a conventional hole sealing pipe and a rough hole sealing pipe of a gas extraction drilling; these patents alleviate the aforementioned problems to some extent, but have some technical and economic disadvantages. For example, in the former two patents, for a drill hole which can be successfully sealed by the first sealing section, the second sealing section is wasted, and the problems of high cost and resource waste exist; the third patent works well, but complicates the handling steps during the procedure and cannot be dealt with if air leaks occur again. To solve the problems of the existing patents, a device for disposing the failed hole sealing by 'secondary hole sealing as required' is urgently needed.
Disclosure of Invention
In order to overcome the deficiency of the prior art of dealing with the failure of the extraction drill hole, the utility model aims to provide an extraction drill hole failure hole sealing processing device of "secondary hole sealing as required".
In order to achieve the purpose, the utility model is implemented according to the following technical scheme:
a drainage borehole failure hole sealing treatment device comprises a first bag, a second bag, a first grouting pipe and a first hole sealing pipe, wherein the first grouting pipe penetrates through the first bag along the outer wall of the first hole sealing pipe, the first hole sealing pipe penetrates through the first bag and the second bag along the direction from the orifice of a borehole to the bottom of the borehole, a first grouting section is formed between the first bag and the second bag, a first explosion valve is arranged on the first grouting pipe in the first grouting section, the drainage borehole failure hole sealing treatment device is characterized by further comprising a third bag, a second grouting pipe and a second hole sealing pipe, the third bag is fixed on the second hole sealing pipe, the second hole sealing pipe penetrates from the inside of the first hole sealing pipe and sends the third bag to one end of the second bag close to the bottom of the borehole, a second grouting section is formed between the second bag and the third bag, and the second grouting pipe extends into the second grouting section along the outside of the second hole sealing pipe, a second explosion valve is arranged on the second grouting pipe between the second grouting sections; when the hole sealing of the first grouting section fails, namely the gas extraction concentration cliff type is reduced, the hole sealing fails, and a third bag and a second hole sealing pipe are installed to realize secondary grouting hole sealing;
furthermore, the front end of the second hole sealing pipe is pointed, and the outer diameter of the second hole sealing pipe is smaller than the inner diameter of the first hole sealing pipe; a plurality of air extraction holes are formed in the outer wall of the second hole sealing pipe positioned on one side of the third bag towards the bottom of the drilling hole; the second hole sealing pipe with a pointed front end is used for breaking a filter screen at the front end of the first hole sealing pipe by using the second hole sealing pipe when the first hole sealing section fails, so that the second hole sealing pipe and the third bag penetrate through the second hole sealing pipe, and then the second grouting section is formed by grouting and sealing the second grouting pipe;
furthermore, the first bag, the second bag and the third bag are all elastic rubber bags, the elastic rubber bags are used for grouting, when the first bag, the second bag and the third bag expand, the first bag, the second bag and the third bag are attached to the inner wall of a drill hole, when the grouting pressure reaches the preset pressure of the first explosion valve or the second explosion valve, the explosion valve is detonated, and grouting is performed on the first grouting section or the second grouting section, so that the plugging effect is realized;
furthermore, two ends of the first bag and the second bag are fixedly mounted on the first hole sealing pipe through first snap rings respectively, two ends of the third bag are fixedly mounted on the second hole sealing pipe through second snap rings, and the diameter of each second snap ring is smaller than the inner diameter of the first hole sealing pipe, so that the third bag can conveniently penetrate through the first hole sealing pipe; realizing the re-plugging of the drill hole with the failure hole sealing;
furthermore, an air return pipe is arranged outside the second hole sealing pipe, the air return pipe is a hollow pipe with two open ends, one end of the air return pipe is positioned outside the drill hole, and the other end of the air return pipe is positioned in the second grouting section; the air return pipe is used for keeping pressure balance in the second grouting section during grouting and returning air while grouting; and smooth grouting is ensured.
The utility model discloses a use method, including following step:
the method comprises the following steps: preparation work before hole sealing: connecting and installing a first bag, a second bag and a first hole sealing pipe;
step two: firstly, hole sealing is carried out on a first grouting section, hole sealing aggregate is prepared into slurry with certain concentration, the slurry has fluidity and coagulability, and then a grouting pump is used for pressing the slurry into the first hole sealing section to carry out hole sealing for the first time;
step three: after the first grouting section is finished, gas extraction is carried out after the slurry is completely solidified; if the concentration of the gas in the extracted borehole is not changed or is slowly reduced, the hole sealing effect is better; if the concentration of the gas extracted from the drilled hole is reduced in a cliff-broken manner within a short time, the hole sealing is invalid; during extraction, detecting a hole sealing failure borehole by adopting an extraction borehole hole sealing leakage quantity measuring device, and performing secondary grouting hole sealing on the failure borehole;
step four: and (3) carrying out secondary hole sealing on the failure drill hole: fixing a third bag on the second hole sealing pipe, conveying the third bag to a position far away from the air leakage position through the inside of the first hole sealing pipe, opening a grouting pump to pressurize slurry to the third bag for second grouting section hole sealing, and when slurry flows out of an air return pipe, finishing the plugging of the second grouting section;
step five: and performing regular maintenance on the second grouting section, and starting gas extraction after hole sealing of the second grouting section is finished, and performing regular monitoring and maintenance.
Compared with the prior art, the utility model discloses an extraction drilling inefficacy hole sealing processing apparatus possesses following beneficial effect;
the utility model discloses to the drilling that a hole sealing became invalid, utilize two of inefficacy hole sealing to annotate equipment, place a pipe diameter and be less than No. two hole sealing pipes of a hole sealing pipe in original hole sealing pipe, No. two bag of installing No. three bags on the hole sealing pipe, carry out the secondary shutoff, belong to the deepening transformation to two present notes hole sealing techniques, avoid the waste to save the cost, make above improvement on the basis of two present shutoff, can take out and take out to gas as required and carry out the secondary remedy, save gas extraction cost, improve gas extraction effect, improve the gas utilization ratio.
The utility model has the advantages of control simple, energy saving, the suitability is strong and safe high-efficient, can carry out the secondary hole sealing operation to the drainage drilling that the hole sealing is poor, leak gas, avoided the loaded down with trivial details construction of taking out drainage drilling of encryption, and the hole sealing is efficient, consumes that the hole sealing material is few, with low costs, makes gas take out and takes out the hole behind the hole sealing and keeps higher drainage concentration and lower attenuation level.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is the utility model discloses a first slip casting section shutoff is accomplished back structure schematic diagram.
Detailed Description
The invention will be further described with reference to the drawings and specific embodiments, illustrative embodiments and description of which are provided herein to explain the invention, but not as a limitation thereof.
The extraction drilling failure hole sealing treatment device shown in fig. 1-2 comprises a first bag 1, a second bag 2, a first grouting pipe 3 and a first hole sealing pipe 4, wherein the first grouting pipe 3 penetrates through the first bag 1 along the outer wall of the first hole sealing pipe 4, the first hole sealing pipe 4 penetrates through the first bag 1 and the second bag 2 along the direction from the hole opening to the hole bottom of a drilling hole, a first grouting section 5 is formed between the first bag 1 and the second bag 2, a first blasting valve 6 is arranged on the first grouting pipe 3 in the first grouting section 5, the extraction drilling failure hole sealing treatment device further comprises a third bag 7, a second grouting pipe 8 and a second hole sealing pipe 9, the third bag 7 is fixed on the second hole sealing pipe 9, the second hole sealing pipe 9 penetrates from the inside of the first hole sealing pipe 4, and the third bag 7 is sent to one end, close to the hole bottom, of the second bag 2, a second grouting section 10 is formed between the second bag 2 and the third bag 7, the second grouting pipe 8 penetrates from the inside of the first hole sealing pipe 4 to the second grouting section 10, and a second explosion valve 11 is arranged on the second grouting pipe 8 between the second grouting sections 10; when the first grouting section 5 fails, namely the gas extraction concentration is decreased in a cliff type manner, the hole sealing is indicated to be failed, and a third bag 7, a second grouting pipe 8 and a second hole sealing pipe 9 are installed to realize secondary grouting hole sealing.
Referring to fig. 1 or fig. 2, in the present embodiment, the front end of the second hole sealing pipe 9 is pointed, and the outer diameter is smaller than the inner diameter of the first hole sealing pipe 4; a plurality of air extraction holes 12 are formed in the outer wall of the second hole sealing pipe 9 which is positioned on one side of the third bag 7 towards the bottom of the drilling hole; the second hole sealing pipe 9 with the pointed front end is used for breaking a front end filter screen of the first hole sealing pipe 4 by using the second hole sealing pipe 9 when the first grouting section 5 fails, so that the second hole sealing pipe 9 and the third bag 7 penetrate through the first hole sealing pipe, the second grouting section 10 is formed by grouting and plugging the second grouting pipe 8.
Referring to fig. 1 or 2, in this embodiment, the first bag 1, the second bag 2, and the third bag 7 are all elastic rubber bags, the elastic rubber bags are used for grouting, when the first bag 1, the second bag 2, and the third bag 7 expand, the first bag 1, the second bag 2, and the third bag 7 are attached to the inner wall of the drill hole, when the pressure reaches the preset pressure of the first burst valve 6 or the second burst valve 11, the first burst valve 6 or the second burst valve 11 is detonated, and grouting is performed on the first grouting section 5 or the second grouting section 10, so as to achieve the plugging effect;
referring to fig. 1 or 2, in this embodiment, two ends of the first pouch 1 and the second pouch 2 are respectively and fixedly mounted on the first hole sealing pipe 4 through a first snap ring 13, two ends of the third pouch 7 are fixedly mounted on the second hole sealing pipe 9 through a second snap ring 14, and a diameter of the second snap ring 14 is smaller than an inner diameter of the first hole sealing pipe 4, so that the third pouch 7 can conveniently penetrate through the first hole sealing pipe 4; realizing the re-plugging of the failed hole sealing;
referring to fig. 1 or fig. 2, in this embodiment, an air return pipe 15 is disposed outside the first hole sealing pipe 4, the air return pipe 15 is a hollow pipe with two open ends, one end of the air return pipe 15 is located outside the drilled hole, and the other end is located in the second grouting section 10; the air return pipe 15 is used for keeping the pressure balance in the second grouting section 10 during grouting and returning air while grouting; and smooth grouting is ensured.
The utility model discloses a use method, including following step:
the method comprises the following steps: preparation work before hole sealing: connecting and installing a first bag, a second bag and a first hole sealing pipe;
step two: firstly, hole sealing is carried out on a first hole sealing section, hole sealing aggregate is prepared into slurry with certain concentration, the slurry has fluidity and coagulability, and then a grouting pump is used for pressing the slurry into the first hole sealing section to carry out primary hole sealing;
step three: after the first hole sealing section is finished, when slurry is completely solidified, gas extraction is carried out, regular maintenance and monitoring detection are carried out on the first hole sealing section, if the gas concentration is unchanged or slowly reduced, the hole sealing effect is good, and if the gas concentration is reduced in a cliff-breaking mode, the hole sealing is invalid; during extraction, detecting a hole sealing failure borehole by adopting an extraction borehole hole sealing leakage quantity measuring device, and performing secondary grouting hole sealing on the failure borehole;
step four: and (3) carrying out secondary hole sealing on the failure drill hole: fixing a third bag on the second hole sealing pipe, conveying the third bag to a position far away from the air leakage position through the inside of the first hole sealing pipe, opening an injection pump to pressurize slurry to the third bag for second hole sealing section hole sealing, and when slurry flows out of an air return pipe, indicating that the second hole sealing section is sealed;
step five: and performing regular maintenance on the second hole sealing section, and starting gas extraction after the hole sealing of the second hole sealing section is finished, and performing regular monitoring and maintenance.
The technical scheme of the utility model is not limited to the restriction of above-mentioned specific embodiment, all according to the utility model discloses a technical scheme makes technical deformation, all falls into within the protection scope of the utility model.
Claims (5)
1. A drainage borehole failure hole sealing treatment device comprises a first bag, a second bag, a first grouting pipe and a first hole sealing pipe, wherein the first grouting pipe penetrates through the first bag along the outer wall of the first hole sealing pipe, the first hole sealing pipe penetrates through the first bag and the second bag along the direction from the orifice of a borehole to the bottom of the borehole, a first grouting section is formed between the first bag and the second bag, a first explosion valve is arranged on the first grouting pipe in the first grouting section, the drainage borehole failure hole sealing treatment device is characterized by further comprising a third bag, a second grouting pipe and a second hole sealing pipe, the third bag is fixed on the second hole sealing pipe, the second hole sealing pipe penetrates from the inside of the first hole sealing pipe and sends the third bag to one end of the second bag close to the bottom of the borehole, a second grouting section is formed between the second bag and the third bag, and the second grouting pipe extends into the second grouting section along the outside of the second hole sealing pipe, and a second explosion valve is arranged on the second grouting pipe positioned on the second grouting section.
2. The extraction borehole failure hole sealing treatment device according to claim 1, wherein the front end of the second hole sealing pipe is pointed, the outer diameter of the second hole sealing pipe is smaller than the inner diameter of the first hole sealing pipe, and a plurality of extraction holes are formed in the outer wall of the second hole sealing pipe, which is located on one side of the third bag facing the bottom of the borehole.
3. The extraction borehole failure hole sealing treatment device according to claim 1, wherein the first bag, the second bag and the third bag are all elastic rubber bags.
4. The extraction borehole failure hole sealing treatment device according to claim 3, wherein two ends of the first bag and the second bag are fixedly mounted on the first hole sealing pipe through first snap rings respectively, two ends of the third bag are fixedly mounted on the second hole sealing pipe through second snap rings, and the diameter of each second snap ring is smaller than the inner diameter of the first hole sealing pipe.
5. The extraction borehole failure hole sealing treatment device according to any one of claims 1 to 4, wherein a gas return pipe is further arranged outside the second hole sealing pipe, the gas return pipe is a hollow pipe with two open ends, one end of the gas return pipe is located outside the borehole, and the other end of the gas return pipe is located in the second grouting section.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121155997.XU CN214836257U (en) | 2021-05-27 | 2021-05-27 | Extraction drilling hole failure hole sealing processing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121155997.XU CN214836257U (en) | 2021-05-27 | 2021-05-27 | Extraction drilling hole failure hole sealing processing apparatus |
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| CN214836257U true CN214836257U (en) | 2021-11-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856666A (en) * | 2022-06-02 | 2022-08-05 | 中国矿业大学 | Underground engineering anchor rod cable support accurate hole sealing device and integrated anchor grouting method |
| CN114856503A (en) * | 2022-05-31 | 2022-08-05 | 中煤能源研究院有限责任公司 | Continuous dynamic sealing device for gas extraction drill hole and using method |
| CN115478826A (en) * | 2022-09-05 | 2022-12-16 | 中国矿业大学(北京) | Device and method for improving gas extraction effect through secondary hole sealing of drilled hole |
-
2021
- 2021-05-27 CN CN202121155997.XU patent/CN214836257U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856503A (en) * | 2022-05-31 | 2022-08-05 | 中煤能源研究院有限责任公司 | Continuous dynamic sealing device for gas extraction drill hole and using method |
| CN114856503B (en) * | 2022-05-31 | 2024-05-14 | 中煤能源研究院有限责任公司 | Continuous dynamic sealing device for gas extraction drilling and use method |
| CN114856666A (en) * | 2022-06-02 | 2022-08-05 | 中国矿业大学 | Underground engineering anchor rod cable support accurate hole sealing device and integrated anchor grouting method |
| CN115478826A (en) * | 2022-09-05 | 2022-12-16 | 中国矿业大学(北京) | Device and method for improving gas extraction effect through secondary hole sealing of drilled hole |
| CN115478826B (en) * | 2022-09-05 | 2023-03-10 | 中国矿业大学(北京) | Device and method for improving gas extraction effect through secondary hole sealing of drilled hole |
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