CN104948167A - Method for observing single-hole gas concentration after seal of high-location drilling field of return airway - Google Patents
Method for observing single-hole gas concentration after seal of high-location drilling field of return airway Download PDFInfo
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- CN104948167A CN104948167A CN201510414363.4A CN201510414363A CN104948167A CN 104948167 A CN104948167 A CN 104948167A CN 201510414363 A CN201510414363 A CN 201510414363A CN 104948167 A CN104948167 A CN 104948167A
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- drill site
- tube
- return airway
- boring
- gas
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Abstract
The invention discloses a method for observing single-hole gas concentration after seal of a high-location drilling field of a return airway. Wire-embedded hoses (2), gas tubes (5) and bundle tubes (4) are adopted, and after hole drilling and sealing of the high-location drilling field (11), all drilled holes are connected through the bundle tubes (4); a water inlet preventing device (8), a negative-pressure sampler (9) and an optical interference gas detector (10) are also adopted, after seal of the high-location drilling field (11), the single-core tubes (5) are connected to the negative-pressure sampler (9) through the water inlet preventing device (8), drilled hole (1) sampling is performed, a gas outlet end of the negative-pressure sampler (9) is connected with the optical interference gas detector (10), and the gas concentration change is observed. The method solves the problem that the change of the single hole (1) gas concentration cannot be observed after seal (14) of the high-location drilling field (11), is simple and convenient to operate and greatly improves the collection capacity of basic parameters.
Description
Technical field
The invention belongs to fissure zone gas density and investigate technical field, particularly relate to the method for the airtight rear observation single hole gas density of the high-order drill site of a kind of return airway.
Background technology
High-order drill site gas pumping is actual is a large amount of high concentration gas gathered by strike long drill extraction fissure zone of constructing to goaf in high-order drill site, thus the gas reducing goaf is gushed out to upper corner.Due to after high-order drill site is closed, cannot investigate its single hole concentration, thus can not determine fissure zone gas enrichment region height and the body leaving band; When routine determines fissure zone height, using water flowing fractured zone and empirical value as etc. reference, these methods can not show height and the distributional pattern of place's fissure zone intuitively.
Summary of the invention
The technical problem to be solved in the present invention is: the method providing the airtight rear observation single hole gas density of the high-order drill site of a kind of return airway, with overcome high-order drill site connect take out construction airtight after, cannot investigate its single hole change in concentration of holing, thus variation ofgas density data can not be adopted as problem such as the analysis height of fissure zone and the distributional pattern of fissure zone etc.
Technical solution of the present invention is as follows:
The method of the airtight rear observation single hole concentration of the high-order drill site of a kind of return airway, comprise high-order drill site, boring, gas pipe, beam tube, negative pressure sampler and interference of light gas detector, after the drilling and sealing of high-order drill site terminates, the single-core tube in beam tube is utilized to carry out intubate to each boring, again beam tube is guided in high-order drill site end opening return airway, be connected to interference of light gas detector observation gas density by negative pressure sampler.
Single-core tube is carried out brokenly osculum insertion to the fiber tube that buries that each company of boring takes out and numbers, adopts cement or Mary to fall apart after inserting and carry out intubate environmental seal.
Suitable for reading until high-order drill site, middle and end opening construct three roads airtight after, single-core tube is connected to waterproof device one end by rubber tube, other end connection negative pressure sampler air entry; Open negative pressure sampler and make the other end be connected to optical interference watt inspection device inlet end, after 2 ~ 10 minutes to be sampled, observe interference of light gas detector change in concentration, after change in concentration is stable, for final single hole gas density, then observe the gas density of each boring one by one.
Described negative pressure sampler, i.e. high negative pressure gas sampler.
Described optical interference watt inspection device, specially refers to " interference of light gas detector ".
Described waterproof device, refer to any can prevent (prevention) water from entering beam tube (single-core tube) and rubber tube device or device.
Describedly bury fiber tube, refer to that its inside is wound with the rubber tube of iron wire, play connection function, some local use between hard gas pipe and boring of underground coal mine is connected inconvenience, buries fiber tube and connects so use and hole and hard gas pipe.
Described company takes out, and refers to the meaning of " couple together gas extraction ".
Described airtight, can be arbitrary closed structure.
Can with reference to following flow process during practical operation: after high-order drilling holes at the drilling yard sealing of hole terminates, utilization is buried fiber tube and is connected on current divider, gas pipe is connected to again by current divider, utilize the single-core tube in beam tube to connect to each boring the fiber tube that buries taken out carry out brokenly osculum insertion and number, adopt cement or Mary to fall apart after inserting and carry out intubate periphery seal, afterwards beam tube is guided in high-order drill site end opening return airway.Can use waterproof device further, namely after high-order drill site is airtight, beam tube is connected to negative pressure sampler by waterproof device, carries out beam tube sampling, and connects interference of light gas detector in negative pressure sampler outlet side, observes variation ofgas density.
The inventive method is simple, reliable, beam tube intubation observes one borehole variation ofgas density in high-order drill site, effectively solve High Position Drilling airtight after, parameter collection cannot be carried out at stoping period variation ofgas density to the one borehole in high-order drill site, thus utilize single hole variation ofgas density data to analyze height and the fissure zone developmental morphology of fissure zone gas enrichment region, reduce and investigate fissure zone cost and investigate accuracy, be easy to grasp general principle in actual mechanical process.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is a-quadrant enlarged diagram in Fig. 1;
Fig. 3 is B region enlarged diagram in Fig. 1.
Detailed description of the invention
As shown in Figures 1 to 3, the method of the airtight rear observation single hole gas density of the high-order drill site of a kind of return airway, comprise high-order drill site 11, boring 1, bury fiber tube 2, current divider 3, gas pipe 6 and beam tube 4, high-order drill site 11 internal drilling 1 sealing of hole terminates rear utilization and buries fiber tube 2 and be connected on current divider 3, gas pipe 6 is connected to again by current divider 3, utilize the single-core tube 5 in beam tube 4 to connect to each boring 1 burying of taking out fiber tube 2 carries out brokenly osculum insertion and numbers, adopt cement or Mary to fall apart after inserting and carry out intubate environmental seal, afterwards beam tube 4 is guided in high-order drill site 11 end opening return airway 13.
Further, waterproof device 8 can be introduced.Suitable for reading until inclined gallery 12, middle and end opening construct behind three roads airtight 14, improves gas pipe negative pressure, to check in beam tube 4 single-core tube 5 whether air-breathing (air-breathing then represents that intubate successfully, otherwise then water blockoff or other reasons) one by one.When investigating single hole gas density, single-core tube 5 is connected to waterproof device 8 one end by rubber tube 7, and the other end connects negative pressure sampler 9 air entry; Open negative pressure sampler 9, check whether outlet side normally gives vent to anger (to give vent to anger and then represent that sampling is normal, otherwise then there is water blockoff or other situations), after normally giving vent to anger, be directly connected to interference of light gas detector 10 inlet end, after 2 ~ 10 minutes to be sampled, observe interference of light gas detector 10 change in concentration, after change in concentration is stable, is final single hole gas density, and observes drilling gas change in concentration one by one every day.By 1 and the goaf discrepancy in elevation relation of holing, analyze the variation ofgas density of different discrepancy in elevation peace distance, determine fissure zone gas enrichment region position.The method solves can not investigate single hole variation ofgas density after high-order drill site 11 is airtight, and the method is simple, convenient, greatly improves the capacity gauge of underlying parameter.
Claims (3)
1. the method for the airtight rear observation single hole gas density of the high-order drill site of return airway, comprise high-order drill site (11), boring (1), gas pipe (6), beam tube (4), negative pressure sampler (9) and optical interference watt inspection device (10), it is characterized in that: after boring (1) sealing of hole of high-order drill site (11) terminates, the single-core tube (5) in beam tube (4) is utilized to carry out intubate to each boring (1), again beam tube (4) is guided in high-order drill site (11) end opening return airway (13), interference of light gas detector (10) observation gas density is connected to by negative pressure sampler (9).
2. the method for the airtight rear observation single hole gas density of the high-order drill site of a kind of return airway according to claim 1, it is characterized in that: single-core tube (5) is connected to each boring (1) fiber tube (2) that buries taken out and carries out brokenly osculum insertion and number, adopt cement or Mary to fall apart after inserting and carry out intubate environmental seal.
3. the method for the airtight rear observation single hole gas density of the high-order drill site of a kind of return airway according to claim 2, it is characterized in that: suitable for reading until inclined gallery (12), middle and end opening has been constructed behind three roads airtight (14), single-core tube (5) is connected to waterproof device (8) one end by rubber tube (7), and the other end connects negative pressure sampler (9) air entry; Open negative pressure sampler (9) and make the other end be connected to interference of light gas detector (10) inlet end, after 2-10 to be sampled minute, observe interference of light gas detector (10) change in concentration, after change in concentration is stable, for final single hole gas density, then observe the gas density of each boring (1) one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510414363.4A CN104948167B (en) | 2015-07-15 | 2015-07-15 | A kind of method of observation single hole gas density after return airway high position drill site is closed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510414363.4A CN104948167B (en) | 2015-07-15 | 2015-07-15 | A kind of method of observation single hole gas density after return airway high position drill site is closed |
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| Publication Number | Publication Date |
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| CN104948167A true CN104948167A (en) | 2015-09-30 |
| CN104948167B CN104948167B (en) | 2018-03-13 |
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| CN201510414363.4A Active CN104948167B (en) | 2015-07-15 | 2015-07-15 | A kind of method of observation single hole gas density after return airway high position drill site is closed |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625820A (en) * | 2018-06-13 | 2018-10-09 | 淮南矿业(集团)有限责任公司 | To hole hole sealing device and its method for sealing under a kind of gas pumping |
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| CN108625820A (en) * | 2018-06-13 | 2018-10-09 | 淮南矿业(集团)有限责任公司 | To hole hole sealing device and its method for sealing under a kind of gas pumping |
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| Publication number | Publication date |
|---|---|
| CN104948167B (en) | 2018-03-13 |
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