CN107762550B - Gas extraction drilling hole sealing method - Google Patents

Gas extraction drilling hole sealing method Download PDF

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CN107762550B
CN107762550B CN201711078144.9A CN201711078144A CN107762550B CN 107762550 B CN107762550 B CN 107762550B CN 201711078144 A CN201711078144 A CN 201711078144A CN 107762550 B CN107762550 B CN 107762550B
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gas
drilling
humidity
slurry
storage tank
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CN107762550A (en
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高明忠
张建国
吕有厂
王满
王英伟
张泽天
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Sichuan University
Pingdingshan Tianan Coal Mining Co Ltd
China Pingmei Shenma Energy and Chemical Group Co Ltd
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Abstract

The invention belongs to the field of gas extraction manufacturing industry, and discloses a gas extraction drilling and hole sealing method which comprises the following steps: selecting a drilling position; turning on a switch, and starting the drilling machine to work; the gas concentration detector can detect the gas concentration in the coal area and can display the gas concentration on a display instrument when the coal area is drilled into the ground to a certain depth; the gas concentration displayed by the display instrument reaches a numerical value, and the exhaust fan is opened to extract gas and store the gas in the gas storage box; the thick liquid is placed inside the mud storage tank, and moisture detector detects the humidity of thick liquid, and the thick liquid can enter into drilling department from the slip casting pipe, and the drilling machine rises again, and thick liquid humidity is higher, can fill the vacancy position fast. The invention solves the problem of blockage caused by coal dust in the gas extraction process, can effectively ensure the humidity of slurry in the hole sealing process, can not be rapidly cooled in the injection drilling process, and avoids the phenomena of untight hole sealing of a drill hole and air leakage of an orifice.

Description

Gas extraction drilling hole sealing method
Technical Field
The invention belongs to the field of gas extraction manufacturing industry, and particularly relates to a gas extraction drilling and hole sealing method.
Background
Gas is an associated gas in coal seams, which is emitted from coal seams in various forms during coal mining, and is one of the most common harmful gases in mines. The concrete is embodied in two aspects: firstly, the gas has the danger of combustion and explosion, and secondly, the danger of coal and gas outburst. And they have the characteristics of difficult prediction, along with the continuous downward extension of coal mining, the emission of coal mine gas is also increased, the production progress of the coal mine is severely limited, and the safety production of the coal mine is greatly restricted.
When the gas concentration reaches a very high value, serious fire disasters can happen on a little spark, the damage degree of coal bed gas disasters is large, casualty accidents are more, the existing gas extraction method discharges the gas in a coal area through a drilling and hole sealing method, but the method is not perfect, the gas extraction speed is slow, the drilling process takes more time, the problems that the gas concentration in the coal area cannot be effectively detected and the like are always solved, the hole sealing and sealing are not tight enough, and gas leaks out, so that the production of a coal mine is limited.
In summary, the problems of the prior art are as follows: the existing gas extraction method discharges gas in a coal area through a drilling hole sealing method, but the method is not perfect enough, the gas extraction speed is slow, the drilling process takes more time, the problems that the gas concentration of the coal area cannot be effectively detected and the like are always solved, the sealing hole sealing is not tight enough, gas leaks out, and the production of a coal mine is limited.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a gas extraction drilling and hole sealing method.
The invention is realized in such a way that the method for sealing the gas extraction drill hole comprises the following steps:
selecting a drilling position;
turning on a switch, and starting the drilling machine to work;
step three, drilling into the ground to a certain depth, wherein the gas concentration detector can detect the gas concentration in the coal area and can display the gas concentration on a display instrument;
fourthly, opening an exhaust fan when the gas concentration displayed by the display instrument reaches a numerical value, extracting the gas and storing the gas in a gas storage box;
and step five, placing the slurry in a slurry storage tank, detecting the humidity of the slurry by a humidity detector, enabling the slurry to enter a drilling position from a grouting pipe, lifting the drilling machine, enabling the slurry to have higher humidity, and quickly filling the vacant position.
A gas extraction drilling and sealing device of a gas extraction drilling and sealing method comprises the following steps: the device comprises a slurry storage tank, a humidity detector, a display instrument, an air duct, a grouting pipe, a drilling machine, a machine body, an air storage tank and an exhaust fan; the pulp storage tank is fixed above the machine body through a bracket; the humidity detector is in keyed connection with the inside of the slurry storage tank, and the display instrument is installed outside the slurry storage tank; the grouting pipe is arranged inside the machine body; the upper end of the drilling machine is fixed on the machine body, and a gas concentration detector is arranged in the drilling machine; the exhaust fan is fixed outside the machine body, one end of the exhaust fan is connected with the air guide pipe in an expanded mode, and the other end of the exhaust fan is connected with the air storage box in an expanded mode; the air storage box is fixed beside the exhaust fan.
Furthermore, the drilling machine, the display instrument and the humidity detector are connected with a power supply through leads.
Furthermore, the air duct expansion joint is sealed by sealant.
Further, the gas concentration detector is connected with a display instrument through a data line.
Further, the drilling machine is provided with a vent hole on the outer part.
Further, in step five, the detecting step of the moisture detector is as follows:
converting a humidity signal into a high-low digital level signal by a humidity sensor;
secondly, the singlechip processes the sent digital quantity signal;
step three, displaying the measured humidity value through an LCD;
and step four, feeding back the detected humidity value to the slurry storage tank.
The cyclic covariate function of the humidity signal receiving signal comprises:
the humidity signal comprises an MPSK humidity signal obeying the S α S distributed noise, which can be expressed as:
Figure GDA0002426934420000021
where E is the average power of the humidity signal,
Figure GDA0002426934420000022
M＝2km1, 2.. M, q (T) denotes a rectangular pulse waveform, T denotes a symbol period, and f denotes a symbol periodcRepresents the carrier frequency, phi0Which represents the initial phase of the phase,if w (t) is non-gaussian noise distributed following S α S, its self-covariant function is defined as:
Figure GDA0002426934420000031
wherein (x (t- τ))<p-1>＝|x(t-τ)|p-2x*(t-τ)，γx(t-τ)Is the dispersion coefficient of x (t), the cyclic covariance of x (t) is defined as:
Figure GDA0002426934420000032
where is referred to as the cycle frequency, T is one symbol period;
when the single chip microcomputer estimates the jumping time of each jump and the normalized mixed matrix column vector and the frequency hopping frequency corresponding to each jump by using a clustering algorithm, the method comprises the following steps:
first, at time P (P ═ 0,1,2, … P-1), pair
Figure GDA0002426934420000033
Clustering the expressed frequency values to obtain the number of clustering centers
Figure GDA0002426934420000034
Indicating the number of carrier frequencies present at time p,
Figure GDA0002426934420000035
the cluster centers represent the carrier frequencies, respectively
Figure GDA0002426934420000036
Represents;
secondly, for each sampling time P (P is 0,1,2, … P-1), a clustering algorithm is used to pair
Figure GDA0002426934420000037
Clustering is carried out to obtain
Figure GDA0002426934420000038
A cluster center of
Figure GDA0002426934420000039
Represents;
third, for all
Figure GDA00024269344200000310
Averaging and rounding to obtain an estimate of the number of source humidity signals
Figure GDA00024269344200000311
Namely, it is
Figure GDA00024269344200000312
The fourth step is to find out
Figure GDA00024269344200000313
At the time of (1), by phRepresenting, for each segment, the successive values of phCalculate the median value by
Figure GDA00024269344200000314
Indicates that the l-th segment is connected with phMedian value of (1), then
Figure GDA00024269344200000315
Represents an estimate of the ith frequency hop time instant;
a fifth step of estimating the estimated values obtained in the second step
Figure GDA00024269344200000316
And estimating the frequency hopping time estimated in the fourth step to obtain the frequency hopping time corresponding to each hop
Figure GDA00024269344200000317
A mixed matrix column vector
Figure GDA00024269344200000318
The concrete formula is as follows:
Figure GDA00024269344200000319
here, the
Figure GDA00024269344200000320
Indicating correspondence of the l-th hop
Figure GDA00024269344200000321
A respective mixed matrix column vector estimate;
sixthly, estimating the carrier frequency corresponding to each hop, and using
Figure GDA0002426934420000041
Indicating correspondence of the l-th hop
Figure GDA0002426934420000042
The calculation formula of the frequency estimated value is as follows:
Figure GDA0002426934420000043
the singlechip splices time-frequency domain frequency hopping source humidity signals among different frequency hopping points, and the method comprises the following specific steps:
first, estimating the corresponding of the first hop
Figure GDA0002426934420000044
At an angle of incidence of
Figure GDA0002426934420000045
Indicating the incident angle corresponding to the nth source humidity signal of the ith jump,
Figure GDA0002426934420000046
the calculation formula of (a) is as follows:
Figure GDA0002426934420000047
Figure GDA0002426934420000048
representing the nth mixing matrix column vector obtained by the estimation of the l hop
Figure GDA0002426934420000049
C represents the speed of light, i.e., vc＝3×108M/s;
in the second step, the corresponding relationship between the estimated source humidity signal of the l (2, 3, …) th hop and the estimated source humidity signal of the first hop is determined, and the determination formula is as follows:
Figure GDA00024269344200000410
wherein m isn (l)M < th > hop estimaten (l)The humidity signal and the nth humidity signal estimated by the first jump belong to the same source humidity signal;
thirdly, splicing humidity signals which are estimated at different frequency hopping points and belong to the same source humidity signal together to be used as the final time-frequency domain source humidity signal estimation, and using Y to estimate the humidity signalsn(P, q) represents a time-frequency domain estimation value of the nth source humidity signal at a time frequency point (P, q), wherein P is 0,1,2fft1, i.e.
Figure GDA00024269344200000411
The invention has the advantages and positive effects that: the invention has simple structure and convenient operation, can improve the drilling depth through the drilling machine, solves the problem of coal dust blockage in the gas extraction process, can effectively ensure the humidity of slurry in the hole sealing process, can not be quickly cooled in the injection drilling process, and avoids the phenomena of untight hole sealing of a drilled hole and air leakage of an orifice.
Drawings
Fig. 1 is a flow chart of a gas extraction borehole sealing method provided by an embodiment of the invention;
fig. 2 is a schematic structural diagram of the gas extraction drilling and hole sealing device provided by the embodiment of the invention;
FIG. 3 is a diagram of a display instrument connected to a moisture detector and a gas concentration detector according to an embodiment of the present invention;
in the figure 1, a slurry storage tank; 2. a moisture detector; 3. a display instrument; 4. an air duct; 5. a grouting pipe; 6. A drilling machine; 7. a body; 8. a gas storage tank; 9. an exhaust fan.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to fig. 1 and 2.
The structure of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the method for sealing a gas extraction borehole provided by the embodiment of the invention includes the following steps:
s101, selecting a drilling position;
s102, turning on a switch, and starting the drilling machine to work;
s103, drilling into the ground to a certain depth, wherein the gas concentration detector can detect the gas concentration in the coal area and can display the gas concentration on a display instrument;
s104, displaying that the gas concentration displayed by the instrument reaches a numerical value, opening an exhaust fan, extracting gas, and storing the gas in a gas storage box;
s105, the slurry is placed in the slurry storage tank, the humidity detector detects the humidity of the slurry, the slurry can enter the drilling position from the grouting pipe, the drilling machine rises back, the humidity of the slurry is high, and the vacant position can be filled quickly.
As shown in fig. 2, the gas extraction borehole sealing device of the gas extraction borehole sealing method according to the embodiment of the present invention includes: the device comprises a slurry storage tank 1, a humidity detector 2, a display instrument 3, an air guide pipe 4, a grouting pipe 5, a drilling machine 6, a machine body 7, an air storage tank 8 and an exhaust fan 9; the pulp storage tank 1 is fixed above the machine body 7 through a bracket; the humidity detector 2 is connected inside the slurry storage tank 1 in a key mode, and the display instrument 3 is installed outside the slurry storage tank 1; the grouting pipe 5 is arranged inside the machine body 7; the upper end of the drilling machine 6 is fixed on the machine body 7, and a gas concentration detector is arranged in the drilling machine; the exhaust fan 9 is fixed outside the machine body 7, one end of the exhaust fan is connected with the air guide pipe 4 in an expanded mode, and the other end of the exhaust fan is connected with the air storage box 8 in an expanded mode; the air storage box 8 is fixed beside the exhaust fan 9.
Further, the drilling machine 6, the display instrument 3 and the moisture detector 2 are connected with a power supply through leads.
Furthermore, the expansion joint of the air duct 4 is sealed by sealant.
Further, the gas concentration detector is connected with a display instrument through a data line.
Further, the drilling machine 6 is provided with a vent hole on the outside.
Further, in step five S105, the detecting step of the humidity detector is as follows:
converting a humidity signal into a high-low digital level signal by a humidity sensor;
secondly, the singlechip processes the sent digital quantity signal;
step three, displaying the measured humidity value through an LCD;
and step four, feeding back the detected humidity value to the slurry storage tank.
The cyclic covariate function of the humidity signal receiving signal comprises:
the humidity signal comprises an MPSK humidity signal obeying the S α S distributed noise, which can be expressed as:
Figure GDA0002426934420000061
where E is the average power of the humidity signal,
Figure GDA0002426934420000062
M＝2km1, 2.. M, q (T) denotes a rectangular pulse waveform, T denotes a symbol period, and f denotes a symbol periodcRepresents the carrier frequency, phi0Representing the initial phase, if w (t) is non-gaussian noise distributed following S α S, its self-covariant function is defined as:
Figure GDA0002426934420000063
wherein (x (t- τ))<p-1>＝|x(t-τ)|p-2x*(t-τ)，γx(t-τ)Is the dispersion coefficient of x (t), the cyclic covariance of x (t) is defined as:
Figure GDA0002426934420000071
where is referred to as the cycle frequency, T is one symbol period;
when the single chip microcomputer estimates the jumping time of each jump and the normalized mixed matrix column vector and the frequency hopping frequency corresponding to each jump by using a clustering algorithm, the method comprises the following steps:
first, at time P (P ═ 0,1,2, … P-1), pair
Figure GDA0002426934420000072
Clustering the expressed frequency values to obtain the number of clustering centers
Figure GDA0002426934420000073
Indicating the number of carrier frequencies present at time p,
Figure GDA0002426934420000074
the cluster centers represent the carrier frequencies, respectively
Figure GDA0002426934420000075
Represents;
secondly, for each sampling time P (P is 0,1,2, … P-1), a clustering algorithm is used to pair
Figure GDA0002426934420000076
Clustering is carried out to obtain
Figure GDA0002426934420000077
A cluster center of
Figure GDA0002426934420000078
Represents;
third, for all
Figure GDA0002426934420000079
Averaging and rounding to obtain an estimate of the number of source humidity signals
Figure GDA00024269344200000710
Namely, it is
Figure GDA00024269344200000711
The fourth step is to find out
Figure GDA00024269344200000712
At the time of (1), by phRepresenting, for each segment, the successive values of phCalculate the median value by
Figure GDA00024269344200000713
Indicates that the l-th segment is connected with phMedian value of (1), then
Figure GDA00024269344200000714
Represents an estimate of the ith frequency hop time instant;
a fifth step of estimating the estimated values obtained in the second step
Figure GDA00024269344200000715
And estimating the frequency hopping time estimated in the fourth step to obtain the frequency hopping time corresponding to each hop
Figure GDA00024269344200000716
A mixed matrix column vector
Figure GDA00024269344200000717
The concrete formula is as follows:
Figure GDA00024269344200000718
here, the
Figure GDA00024269344200000719
Indicating correspondence of the l-th hop
Figure GDA00024269344200000720
A respective mixed matrix column vector estimate;
sixthly, estimating the carrier frequency corresponding to each hop, and using
Figure GDA00024269344200000721
Indicating correspondence of the l-th hop
Figure GDA00024269344200000722
The calculation formula of the frequency estimated value is as follows:
Figure GDA0002426934420000081
the singlechip splices time-frequency domain frequency hopping source humidity signals among different frequency hopping points, and the method comprises the following specific steps:
first, estimating the corresponding of the first hop
Figure GDA0002426934420000082
At an angle of incidence of
Figure GDA0002426934420000083
Indicating the incident angle corresponding to the nth source humidity signal of the ith jump,
Figure GDA0002426934420000084
the calculation formula of (a) is as follows:
Figure GDA0002426934420000085
Figure GDA0002426934420000086
representing the nth mixing matrix column vector obtained by the estimation of the l hop
Figure GDA0002426934420000087
C represents the speed of light, i.e., vc＝3×108M/s;
in the second step, the corresponding relationship between the estimated source humidity signal of the l (2, 3, …) th hop and the estimated source humidity signal of the first hop is determined, and the determination formula is as follows:
Figure GDA0002426934420000088
wherein m isn (l)M < th > hop estimaten (l)The humidity signal and the nth humidity signal estimated by the first jump belong to the same source humidity signal;
thirdly, splicing humidity signals which are estimated at different frequency hopping points and belong to the same source humidity signal together to be used as the final time-frequency domain source humidity signal estimation, and using Y to estimate the humidity signalsn(P, q) represents a time-frequency domain estimation value of the nth source humidity signal at a time frequency point (P, q), wherein P is 0,1,2fft1, i.e.
Figure GDA0002426934420000089
The working principle of the invention is as follows: the drilling position is selected, the switch is turned on, the drilling machine 6 starts to work and drills into the ground to a certain depth, and the gas concentration detector can detect the gas concentration in the coal area and can display the gas concentration on the display instrument 3. The gas concentration that display instrument 3 shows reaches certain numerical value and opens air exhauster 9, takes out gas, stores inside gas storage tank 8. The thick liquid is placed inside slurry storage tank 1, and moisture detector 2 can detect the humidity of thick liquid, and the thick liquid can enter into drilling department from the slip casting pipe, and drilling machine 6 can slowly rise back, and thick liquid humidity is higher, can fill vacancy position fast, prevents that gas from leaking. The gas extraction drilling and hole sealing method is simple in structure and convenient to operate. Through the drilling machine, the drilling depth can be improved, the problem that the coal dust is blocked in the gas extraction process is solved, the humidity of slurry can be effectively guaranteed in the hole sealing process, the slurry cannot be rapidly cooled in the injection drilling process, and the phenomena that the drilling hole sealing is not tight and the air leakage of an orifice is avoided.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims (5)

1. The method for sealing the gas extraction drill hole is characterized by comprising the following steps:
selecting a drilling position;
turning on a switch, and starting the drilling machine to work;
step three, drilling into the ground to a certain depth, wherein the gas concentration detector can detect the gas concentration in the coal area and can display the gas concentration on a display instrument;
fourthly, opening an exhaust fan when the gas concentration displayed by the display instrument reaches a numerical value, extracting the gas and storing the gas in a gas storage box;
placing the slurry in a slurry storage tank, detecting the humidity of the slurry by a humidity detector, enabling the slurry to enter a drilling position from a grouting pipe, raising a drilling machine, enabling the slurry to have higher humidity, and quickly filling the vacant position;
the detecting step of the moisture detector comprises: the humidity sensor converts the humidity signal into a high-low digital level signal; the singlechip processes the sent digital quantity signal; displaying the measured humidity value through an LCD; feeding back the detected humidity value to the pulp storage tank;
the gas drainage drilling and hole sealing device comprises: the device comprises a slurry storage tank, a humidity detector, a display instrument, an air duct, a grouting pipe, a drilling machine, a machine body, an air storage tank and an exhaust fan;
the pulp storage tank is fixed above the machine body through a bracket;
the humidity detector is in keyed connection with the inside of the slurry storage tank, and the display instrument is installed outside the slurry storage tank;
the grouting pipe is arranged inside the machine body; the upper end of the drilling machine is fixed on the machine body, and a gas concentration detector is arranged in the drilling machine;
the exhaust fan is fixed outside the machine body, one end of the exhaust fan is connected with the air guide pipe in an expanded mode, and the other end of the exhaust fan is connected with the air storage box in an expanded mode;
the air storage box is fixed beside the exhaust fan.
2. The gas extraction drilling and sealing device according to claim 1, wherein the drilling machine, the display instrument and the moisture detector are connected to a power supply through wires.
3. The gas extraction borehole sealing device according to claim 1, wherein the gas guide tube expansion joint is sealed with a sealant.
4. The gas extraction borehole sealing device according to claim 1, wherein the gas concentration detector is connected to a display instrument via a data line.
5. The gas extraction borehole sealing device according to claim 1, wherein a vent hole is provided outside the drilling machine.
CN201711078144.9A 2017-11-06 2017-11-06 Gas extraction drilling hole sealing method Active CN107762550B (en)

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Publication number Priority date Publication date Assignee Title
CN110219615B (en) * 2019-05-31 2021-11-05 山东科技大学 Coal seam pulsating water injection drilling hole sealing device and hole sealing method
CN116427996B (en) * 2023-04-18 2023-09-26 淮北工业建筑设计院有限责任公司 Management system and method for realizing grouting filling by using ground gas extraction pipe

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101029576A (en) * 2007-04-02 2007-09-05 中国矿业大学 Method and apparatus for protruding hazadous coal-bed safety guide-jet drilling
CN102587828A (en) * 2012-03-06 2012-07-18 中国矿业大学 Gas extraction and drilling cooperative drilling and protecting integrated system for soft coal seams and process
CN102839964A (en) * 2012-08-08 2012-12-26 中国矿业大学 Coal and gas burst risk parameter drilling and predicting integrated method
CN103352718A (en) * 2013-07-29 2013-10-16 河南理工大学 Fully-sealed wind power slagging gas-drainage deep well drilling system and method
CN205708192U (en) * 2016-04-28 2016-11-23 广东乾开环保有限公司 A kind of sludge storage bin system
CN107060687A (en) * 2017-03-29 2017-08-18 中国矿业大学 Subsection filling formula slip-casting hole-sealing method based on fluid

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101029576A (en) * 2007-04-02 2007-09-05 中国矿业大学 Method and apparatus for protruding hazadous coal-bed safety guide-jet drilling
CN102587828A (en) * 2012-03-06 2012-07-18 中国矿业大学 Gas extraction and drilling cooperative drilling and protecting integrated system for soft coal seams and process
CN102839964A (en) * 2012-08-08 2012-12-26 中国矿业大学 Coal and gas burst risk parameter drilling and predicting integrated method
CN103352718A (en) * 2013-07-29 2013-10-16 河南理工大学 Fully-sealed wind power slagging gas-drainage deep well drilling system and method
CN205708192U (en) * 2016-04-28 2016-11-23 广东乾开环保有限公司 A kind of sludge storage bin system
CN107060687A (en) * 2017-03-29 2017-08-18 中国矿业大学 Subsection filling formula slip-casting hole-sealing method based on fluid

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