CN111005762B - Improved method for measuring resistance of inclined differential pressure meter - Google Patents
Improved method for measuring resistance of inclined differential pressure meter Download PDFInfo
- Publication number
- CN111005762B CN111005762B CN202010005684.XA CN202010005684A CN111005762B CN 111005762 B CN111005762 B CN 111005762B CN 202010005684 A CN202010005684 A CN 202010005684A CN 111005762 B CN111005762 B CN 111005762B
- Authority
- CN
- China
- Prior art keywords
- rubber
- differential pressure
- roadway
- pressure meter
- rubber pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000005259 measurement Methods 0.000 claims abstract description 37
- 230000002159 abnormal effect Effects 0.000 claims abstract description 10
- 238000009423 ventilation Methods 0.000 claims description 29
- 238000012360 testing method Methods 0.000 claims description 7
- 239000003245 coal Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000005641 tunneling Effects 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21F17/02—Suspension devices for tubes or the like, e.g. for ventilating ducts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention provides an improved method for measuring the resistance of a differential pressure gauge. The method comprises the steps of firstly selecting a tunnel needing to be provided with a rubber hose, then arranging the rubber hose on the tunnel wall, checking the connectivity and the integrity of the rubber hose before measurement, replacing an abnormal section, and finally measuring the mine resistance by using an improved inclined differential pressure meter method.
Description
Technical Field
The invention relates to the technical field of mine ventilation, in particular to an improved method for measuring the resistance of an inclined differential pressure meter.
Background
The one hundred and fifty-six rules of the coal mine safety regulations: the mine ventilation resistance measurement must be carried out for 1 time before the new well is put into production, at least 1 time every 3 years later, the mine ventilation resistance measurement must be carried out again after the production mine is shifted to new horizontal production and a wing is changed or a ventilation system of the whole mine is changed, and the period of the mine ventilation resistance measurement is usually less than three years in real production due to the change of the ventilation system.
The mine ventilation resistance measurement is an important content of mine ventilation technical management, and the main purposes of the mine ventilation resistance measurement are as follows: 1) knowing the resistance distribution of a mine ventilation system; 2) providing basic data and parameters for optimizing and reasonably distributing air for a ventilation system of a production mine; 3) necessary basic data are provided for mine underground disaster prevention and control and wind flow regulation; 4) providing a basis for ensuring normal production of a mine and increasing yield and efficiency; 5) and basic parameters are provided for the verification of the ventilation capacity of the mine.
At present, the mine ventilation resistance is mainly determined by an inclined differential pressure meter method and an air pressure meter method. The barometer measures static pressure terms and bit pressure terms of two points, an inclined differential pressure meter method directly measures the difference of the sum of the static pressure terms and the bit pressure terms of the two points, the bit pressure is difficult to measure and calibrate for the barometer method, mine elevation data need to be searched to correct the bit pressure during calculation, and the barometer method has the advantages of convenience, quickness, few operators and short measuring time. But the defects are also obvious, and the error of the measured data is large. First, the inherent error produced by a multiparameter measurement instrument is determined by the design of the instrument itself and is difficult to eliminate. Another part of the error is caused by measurement methods and artifacts. When the base point method is used for measuring two measuring points, the time interval, the opening and closing of the air door and the walking of workers are all factors causing errors, the inclined differential pressure gauge method has the advantages that the inclined differential pressure gauge method is accurate, the inclined differential pressure gauge directly measures differential pressure of two points, and the inclined differential pressure gauge method has the defects that the pipe laying process is complicated, more workers are needed, and the whole measurement consumes long time.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an improved method for measuring the resistance of an inclined differential pressure meter, which is characterized in that a resistance measuring rubber tube is arranged on the wall of a roadway in advance, and a step of laying the tube in the process of measuring the wind resistance by using the inclined differential pressure meter method is eliminated, so that the time cost, the labor cost and the measurement data error in the measuring process are reduced, and the mine ventilation detection efficiency is improved.
In order to achieve the technical effects, the invention provides an improved method for measuring the resistance of a tilt differential pressure meter, which comprises the following steps:
step 1: selecting a path with the maximum resistance from all ventilation paths as a roadway needing to be provided with rubber pipes;
step 2: when the rubber tube is laid, the rubber tube is hung on the wall of the roadway by using a binding band, a copper tube is reserved at a special position to be used as a connector, and the connector is used for connecting the rubber tube at the cut-off position;
and step 3: before the measurement, the connectivity of the laid rubber tube is checked, an abnormal section is found out by adopting a dichotomy method and the rubber tube is replaced by a normal rubber tube;
and 4, step 4: and (3) utilizing an improved inclined differential pressure meter method to measure mine resistance, opening joints at two ends of the section to be measured before measurement, connecting a pitot tube and the inclined differential pressure meter, and connecting a rubber pipe back to the joints after measurement is finished, wherein the improved inclined differential pressure meter method is to replace the rubber pipe which is laid in the roadway when the inclined differential pressure meter method is used for measurement by using the rubber pipe hung on the wall of the roadway.
And 2, when the rubber pipe is hung on the roadway, when a special position is met, the rubber pipe needs to be disconnected at a position in the roadway before the special position and at a distance of 3 times of the roadway width from the special position, the rubber pipe needs to be disconnected at a position in the roadway after the special position and at a distance of 3-8 times of the roadway width from the special position, and the special position comprises a roadway turning position, a roadway support mode changing position, a wind distributing position and a wind converging position.
The step 3 is specifically expressed as follows:
s0, firstly, grouping the arranged rubber tubes according to connectivity;
s1-1 pairs of rubber tubes M communicated with each other1Two ends are connected with a pitot tube and an inclined differential pressure meter, and after reading the indication number of the inclined differential pressure meter, the rubber tube M is measured by the inclined differential pressure meter and a multi-parameter measuring instrument1The data are compared, and the comparison result is recorded as a ratio delta1；
S1-2 if ratio delta1If the distance is larger than the preset value delta, the distance between the rubber pipe M and the rubber pipe M is greater than the preset value delta1The joint with the nearest middle position is disconnected as two sections of rubber pipes M to be detected2-1、M2-2；
S2-1 repeating the step S1-1 to read out the rubber tube M2-1Rubber pipe M measured by inclined differential pressure meter and multi-parameter measuring instrument2-1The data are compared, and the comparison result is recorded as a ratio delta2-1And repeating the step S1-1 again to read the rubber tube M2-2Rubber pipe M measured by inclined differential pressure meter and multi-parameter measuring instrument2-2The data are compared, and the comparison result is recorded as a ratio delta2-2；
S2-2 if ratio delta2-1If the distance is larger than the preset value delta, the distance between the rubber pipe M and the rubber pipe M is greater than the preset value delta2-1The joint with the nearest middle position is disconnected as two sections of rubber pipes M to be detected3-1、M3-2If the ratio delta2-2If the distance is larger than the preset value delta, the distance between the rubber pipe M and the rubber pipe M is greater than the preset value delta2-2The joint closest to the middle is broken as two sections to be checkedRubber checking tube M3-3、M3-4；
S3-1, repeating the step S1-1 to the step 1-2 to check all laid rubber tubes, finding out all abnormal sections and replacing all the abnormal sections with normal rubber tubes.
Furthermore, the laid rubber tube can be used for self-testing of a coal mine to obtain real-time ventilation resistance data besides being used for detecting mine resistance, and can also be used for detecting whether the connectivity of the rubber tube is intact in the rubber tube self-testing process to maintain the rubber tube.
The invention has the beneficial effects that:
1) the time for measuring the ventilation resistance of the mine is reduced; 2) the number of people in the mine resistance measurement team is reduced; 3) rubber pipes are arranged in advance for the roadway which is difficult to lay pipes, so that the application range of the inclined differential pressure meter method is enlarged; 4) under the condition of multiple measurements and small readings, the error caused by the roadway with small air volume is reduced.
Drawings
FIG. 1 is a sectional view showing the arrangement of a hose according to the present invention;
FIG. 2 is a plan view of the arrangement of the hose of the present invention;
FIG. 3 is a partial view of the arrangement of the hose and a cross-sectional view of the hose joint according to the present invention;
in the figure, 1, a resistance measuring rubber pipe, 2, a connector, 3, an air inlet crossheading detour, 4, a mining area auxiliary transportation descending hill, 5, a mining area descending hill bottom detour, 6, a copper connector, 7 and a binding band.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments, which take a coal mine as an example and have the following basic conditions: the well field development is mainly inclined shaft-vertical shaft mixed development, the mine ventilation mode is central parallel type, the mine ventilation method is mechanical extraction type, the main inclined shaft, the air inlet inclined shaft and the auxiliary vertical shaft are air inlet shafts, and the air return vertical shaft is an air return shaft; the air return shaft is provided with two VMMF-3200/1800-1H type counter-rotating axial flow fans, a stope face, a standby face and 4 tunneling faces are arranged at present, wherein the four tunneling faces comprise auxiliary transportation crossheading tunneling, rubber belt transportation crossheading tunneling, high suction roadway tunneling and auxiliary transportation crossheading tunneling.
An improved method for measuring the resistance of a tilt differential pressure meter comprises the following steps:
step 1: in the embodiment, main tunnels such as a horizontal rail tunnel and a mining area return air descending mountain, an overlong tunnel such as a rubber belt transportation gateway connected with an air inlet gateway bypass (3), a low-air-volume tunnel such as a mining area auxiliary transportation descending mountain bottom (4), and tunnels difficult to lay pipes such as a main inclined shaft are important or difficult points in resistance measurement, and rubber pipes are arranged in advance, and the arrangement method is shown in figures 1 to 3;
step 2: when a rubber pipe is laid, the rubber pipe is bound with other cables, bundled tubes and other pipelines by using a binding band and is hung on the wall of a roadway, a copper pipe is reserved at a special position to serve as a connector, the connector is used for connecting the rubber pipe at the cut-off position, when the special position is met, the rubber pipe needs to be cut off at the position, in the roadway before the special position, at the distance of 3 times of the roadway width at the special position, and the rubber pipe needs to be cut off at the position, in the roadway after the special position, at the distance of 3-8 times of the roadway width at the special position, wherein the special position comprises a roadway turning position, a roadway support mode changing position, a wind distributing position and a;
it is noted that the rubber tube is flexible and easy to bend, when the rubber tube is fixed by the binding bands, tightening is not needed, the distance between the binding bands is controlled not to be too far, the rubber tube is prevented from being deficient and folded due to the self weight of the binding lines and the rubber tube, the communication of the rubber tube is prevented from being influenced, joints are reserved at positions with overlarge local resistance and wind flow disorder, such as roadway turning, fork openings and the like, the joints are connected by thin copper tubes, allowance is reserved, the rubber tube is prevented from being tensioned, and the joints are disconnected;
and step 3: before the determination, the connectivity of the laid rubber tube is checked, an abnormal section is found out by adopting a dichotomy method and is replaced by a normal rubber tube, and the method is specifically expressed as follows:
s0, firstly, grouping the arranged rubber tubes according to connectivity;
s1-1 pairs of rubber tubes M communicated with each other1Two ends are connected with a pitot tube and an inclined differential pressure meter, and after reading the indication number of the inclined differential pressure meter, the rubber tube M is measured by the inclined differential pressure meter and a multi-parameter measuring instrument1Number ofAccording to the comparison, the comparison result is recorded as the ratio delta1；
S1-2 if ratio delta1If the distance is larger than the preset value delta, the distance between the rubber pipe M and the rubber pipe M is greater than the preset value delta1The joint with the nearest middle position is disconnected as two sections of rubber pipes M to be detected2-1、M2-2；
S2-1 repeating the step S1-1 to read out the rubber tube M2-1Rubber pipe M measured by inclined differential pressure meter and multi-parameter measuring instrument2-1The data are compared, and the comparison result is recorded as a ratio delta2-1And repeating the step S1-1 again to read the rubber tube M2-2Rubber pipe M measured by inclined differential pressure meter and multi-parameter measuring instrument2-2The data are compared, and the comparison result is recorded as a ratio delta2-2；
S2-2 if ratio delta2-1If the distance is larger than the preset value delta, the distance between the rubber pipe M and the rubber pipe M is greater than the preset value delta2-1The joint with the nearest middle position is disconnected as two sections of rubber pipes M to be detected3-1、M3-2If the ratio delta2-2If the distance is larger than the preset value delta, the distance between the rubber pipe M and the rubber pipe M is greater than the preset value delta2-2The joint with the nearest middle position is disconnected as two sections of rubber pipes M to be detected3-3、M3-4；
S3-1, repeating the step S1-1 to the step 1-2 to check all laid rubber tubes, finding out all abnormal sections and replacing all the abnormal sections with normal rubber tubes;
and 4, step 4: the mine resistance is measured by using an improved inclined differential pressure meter method, joints at two ends of a rubber pipe arranged on a roadway to be measured are opened before measurement, a pitot tube and the inclined differential pressure meter are connected, if the roadway (4) is measured, the inclined differential pressure meter is connected to a downstream joint (2) of airflow of the roadway (4), the pitot tube is connected to an upstream joint of the roadway (4), then measurement is carried out according to normal steps, the rubber pipe is connected with a return joint and reset after measurement is finished, and the improved inclined differential pressure meter method is that the rubber pipe which is hung on the wall of the roadway replaces the rubber pipe which is laid in the roadway when the inclined differential pressure meter method is used for measurement.
Furthermore, the arranged rubber pipes can be used for self-testing of coal mines besides being used for mine resistance measurement, real-time ventilation resistance data can be obtained, whether the connectivity of the rubber pipes is intact or not can be detected in the rubber pipe self-testing process, the rubber pipes can be used for maintenance of the rubber pipes, a long distance can be measured at one time through the series connection characteristic of the rubber pipes fixed in a roadway, and fault positions can be quickly determined by utilizing a bisection method when fault points occur.
The mine ventilation detection method provided by the invention cancels a pipe laying step in resistance measurement, reduces the time cost, the labor cost and the measurement error in the resistance measurement process, improves the mine ventilation detection efficiency, is favorable for strengthening the mine ventilation safety management and improving the mine safety production coefficient, greatly improves the wind measurement simplicity, can carry out more flexible self-measurement on a coal mine, timely masters the condition of an underground ventilation system, more accurately and rapidly adjusts the ventilation system, simultaneously reduces the workload of a third party for measuring the ventilation resistance, improves the working efficiency, suspends and fixes the rubber pipe in the mine, increases the cost which is not high compared with the time and the labor cost of the traditional mine resistance measurement, and can combine the later maintenance on the rubber pipe with the self-measurement on the ventilation system by the mine.
The improved inclined differential pressure meter method has measurement accuracy and implementation convenience, and the traditional differential pressure meter method has the problem that the total length of the rubber pipe is about 200m because the measurement personnel carry the rubber pipe to enter the well by the traditional differential pressure meter method and are limited by the weight of the rubber pipe and the quantity of the personnel, so that various limitations are caused to the measurement work.
The air duct is not branched and intersected, a long roadway with a roadway shape supporting mode basically unchanged is adopted, if the air enters and returns along the roadway, the traditional method needs to lay the pipe for multiple times to measure a complete section, the reading is repeated for multiple times, the error is increased, in the roadway with less air volume, the effective differential pressure data is difficult to read out in the measuring section of 200m, the influence of the length of the rubber pipe in the differential pressure meter method on the measuring precision becomes obvious, the original multiple sections can be measured once if the measuring length is increased, and the accuracy is effectively improved.
The pressure differential gauge method has the advantages that workers such as inclined shafts, belt lanes and large-angle inclined lanes are difficult to reach and instruments are difficult to operate, a barometer method is adopted for supplement in the prior art, measurement accuracy is reduced, the pressure differential gauge method is a concrete manifestation of the defects that the pressure differential gauge method is complex in test operation, a large number of workers are involved, and the like, if the rubber tube is fixed in advance, the operation difficulty can be reduced, the number of workers is reduced, and the inclined pressure differential gauge method can be used for measurement easily.
Claims (3)
1. An improved method for measuring the resistance of a tilt differential pressure meter is characterized by comprising the following steps:
step 1: selecting a path with the maximum resistance from all ventilation paths as a roadway needing to be provided with rubber pipes;
step 2: when the rubber tube is laid, the rubber tube is hung on the wall of the roadway by using a binding band, a copper tube is reserved at a special position to be used as a connector, and the connector is used for connecting the rubber tube at the cut-off position;
and step 3: before the determination, the connectivity of the laid rubber tube is checked, an abnormal section is found out by adopting a dichotomy method and is replaced by a normal rubber tube, and the method is specifically expressed as follows:
s0, firstly, grouping the arranged rubber tubes according to connectivity;
s1-1 pairs of rubber tubes M communicated with each other1Two ends are connected with a pitot tube and an inclined differential pressure meter, and after reading the indication number of the inclined differential pressure meter, the rubber tube M is measured by the inclined differential pressure meter and a multi-parameter measuring instrument1The data are compared, and the comparison result is recorded as a ratio delta1；
S1-2 if ratio delta1If the distance is larger than the preset value delta, the distance between the rubber pipe M and the rubber pipe M is greater than the preset value delta1The joint with the nearest middle position is disconnected as two sections of rubber pipes M to be detected2-1、M2-2；
S2-1 repeating the step S1-1 to read out the rubber tube M2-1Rubber pipe M measured by inclined differential pressure meter and multi-parameter measuring instrument2-1The data are compared, and the comparison result is recorded as a ratio delta2-1And repeating the step S1-1 again to read the rubber tube M2-2Rubber pipe M measured by inclined differential pressure meter and multi-parameter measuring instrument2-2The data are compared, and the comparison result is recorded as a ratio delta2-2；
S2-2 if ratio delta2-1If the distance is larger than the preset value delta, the distance between the rubber pipe M and the rubber pipe M is greater than the preset value delta2-1The joint with the nearest middle position is disconnected as two sections of rubber pipes M to be detected3-1、M3-2If the ratio delta2-2If the distance is larger than the preset value delta, the distance between the rubber pipe M and the rubber pipe M is greater than the preset value delta2-2The joint with the nearest middle position is disconnected as two sections of rubber pipes M to be detected3-3、M3-4；
S3-1, repeating the step S1-1 to the step 1-2 to check all laid rubber tubes, finding out all abnormal sections and replacing all the abnormal sections with normal rubber tubes;
and 4, step 4: and (3) utilizing an improved inclined differential pressure meter method to measure mine resistance, opening joints at two ends of the section to be measured before measurement, connecting a pitot tube and the inclined differential pressure meter, and connecting a rubber pipe back to the joints after measurement is finished, wherein the improved inclined differential pressure meter method is to replace the rubber pipe which is laid in the roadway when the inclined differential pressure meter method is used for measurement by using the rubber pipe hung on the wall of the roadway.
2. The improved inclined differential pressure gauge resistance measuring method according to claim 1, wherein in the step 2, when a rubber pipe is hung on a roadway, when a special position is met, the rubber pipe needs to be disconnected at a distance which is 3 times of the roadway width from the special position in the roadway before the special position, and the rubber pipe needs to be disconnected at a distance which is 3-8 times of the roadway width from the special position in the roadway after the special position, wherein the special position comprises a roadway turning position, a roadway support mode changing position, a wind distributing position and a wind converging position.
3. The improved inclined differential pressure meter resistance measuring method as claimed in claim 1, wherein the laid rubber hose can be used for self-test of coal mines besides mine resistance measurement, real-time ventilation resistance data is obtained, and whether the connectivity of the rubber hose is intact or not can be detected in the rubber hose self-test process for maintenance of the rubber hose.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010005684.XA CN111005762B (en) | 2020-01-03 | 2020-01-03 | Improved method for measuring resistance of inclined differential pressure meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010005684.XA CN111005762B (en) | 2020-01-03 | 2020-01-03 | Improved method for measuring resistance of inclined differential pressure meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111005762A CN111005762A (en) | 2020-04-14 |
| CN111005762B true CN111005762B (en) | 2021-01-12 |
Family
ID=70120421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010005684.XA Expired - Fee Related CN111005762B (en) | 2020-01-03 | 2020-01-03 | Improved method for measuring resistance of inclined differential pressure meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111005762B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161507A (en) * | 2013-02-07 | 2013-06-19 | 辽宁工程技术大学 | Mine ventilation parameter wireless test system |
| CN106593507A (en) * | 2016-11-26 | 2017-04-26 | 辽宁工程技术大学 | Ventilation resistance testing method |
| CN107083983A (en) * | 2017-03-31 | 2017-08-22 | 中国矿业大学 | A kind of intensive mine resistance measuring method |
| CN206975067U (en) * | 2017-08-10 | 2018-02-06 | 黑龙江科技大学 | A kind of minute-pressure differential wind velocity measurement system |
| CN109281698A (en) * | 2018-09-29 | 2019-01-29 | 天地（常州）自动化股份有限公司 | Mensuration of Mine Ventilation Resistance data processing method based on relative pressure |
| CN109753624A (en) * | 2019-01-10 | 2019-05-14 | 天地（常州）自动化股份有限公司 | Mensuration of Mine Ventilation Resistance method based on feature tunnel |
| CN109752163A (en) * | 2017-11-08 | 2019-05-14 | 中国矿业大学 | A kind of intensive mine ventilation network windage On-line Measuring Method based on virtual instrument |
| CN109798262A (en) * | 2019-02-19 | 2019-05-24 | 重庆交通大学 | The dynamic control method of Tunnel Ventilation System |
| CN109854299A (en) * | 2018-12-11 | 2019-06-07 | 中煤科工集团重庆研究院有限公司 | Airway coefficient of frictional resistance fast determination method based on big data |
-
2020
- 2020-01-03 CN CN202010005684.XA patent/CN111005762B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161507A (en) * | 2013-02-07 | 2013-06-19 | 辽宁工程技术大学 | Mine ventilation parameter wireless test system |
| CN106593507A (en) * | 2016-11-26 | 2017-04-26 | 辽宁工程技术大学 | Ventilation resistance testing method |
| CN107083983A (en) * | 2017-03-31 | 2017-08-22 | 中国矿业大学 | A kind of intensive mine resistance measuring method |
| CN206975067U (en) * | 2017-08-10 | 2018-02-06 | 黑龙江科技大学 | A kind of minute-pressure differential wind velocity measurement system |
| CN109752163A (en) * | 2017-11-08 | 2019-05-14 | 中国矿业大学 | A kind of intensive mine ventilation network windage On-line Measuring Method based on virtual instrument |
| CN109281698A (en) * | 2018-09-29 | 2019-01-29 | 天地（常州）自动化股份有限公司 | Mensuration of Mine Ventilation Resistance data processing method based on relative pressure |
| CN109854299A (en) * | 2018-12-11 | 2019-06-07 | 中煤科工集团重庆研究院有限公司 | Airway coefficient of frictional resistance fast determination method based on big data |
| CN109753624A (en) * | 2019-01-10 | 2019-05-14 | 天地（常州）自动化股份有限公司 | Mensuration of Mine Ventilation Resistance method based on feature tunnel |
| CN109798262A (en) * | 2019-02-19 | 2019-05-24 | 重庆交通大学 | The dynamic control method of Tunnel Ventilation System |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111005762A (en) | 2020-04-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020258589A1 (en) | Method for inversion calculation of coal seam gas parameters by rapid measurement while drilling | |
| CN204754919U (en) | Multistage shutoff of roof water guide crack area is system of leaking hunting in step | |
| CN209670980U (en) | A kind of tunneling shield section of jurisdiction site monitoring system | |
| US8909479B2 (en) | Apparatus and method for detecting and quantifying leakage in a pipe | |
| CN103644940A (en) | Coal seam gas pressure, gas flow and crustal stress monitoring device and monitoring method | |
| CN108050394A (en) | Fuel gas pipeline leakage based on sound pressure signal identification detects positioning experiment platform | |
| CN106872155A (en) | A kind of performance of exhaust valve test system and method for testing | |
| CN105003255A (en) | Floor mining damage zone multi-section blocking synchronous leakage detection method | |
| CN107859527A (en) | The method that wind is surveyed in mine pressure measurement wind measuring device and its pressure measurement | |
| CN109296361A (en) | A kind of Seam Mining crack field gas pressure measurement system | |
| CN109026154A (en) | A kind of determination method and device of wind cave air leak rate of air curtain | |
| CN111005762B (en) | Improved method for measuring resistance of inclined differential pressure meter | |
| CN108254154A (en) | A kind of mine arched tunnel Wind volume detector and method | |
| CN104358559A (en) | Method for measuring effective coal-mine gas extraction radius | |
| CN112836350B (en) | Real-time calculation method for gas extraction parameters of underground coal mine pipe network | |
| CN114183136A (en) | Coal seam drilling leakage point detection device and method | |
| CN209117086U (en) | One kind being used for mine ventilation pressure-measuring pipe | |
| CN203757380U (en) | Pipeline leakage detection system based on optical fiber technology | |
| CN102116170B (en) | Method for determining grid type layer-through drilling intervals of floor roadway | |
| CN114517703A (en) | Ventilation resistance synchronous measuring system and method | |
| CN114837722A (en) | Improved method for measuring ventilation resistance based on inclined differential pressure gauge | |
| CN108050986A (en) | The method for determining Rock And Soil internal rupture face position is monitored based on multipoint displacement meter | |
| CN207776893U (en) | Mine pressure measurement wind measuring device | |
| CN112240818A (en) | Device and method for detecting leakage point of inner pipe of long-distance buried double-wall pipe | |
| CN113700472A (en) | Method for determining air leakage direction and measuring air leakage amount of goaf |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210112 Termination date: 20220103 |