CN101705836B - Jet control device and method - Google Patents
Jet control device and method Download PDFInfo
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- CN101705836B CN101705836B CN2009100356439A CN200910035643A CN101705836B CN 101705836 B CN101705836 B CN 101705836B CN 2009100356439 A CN2009100356439 A CN 2009100356439A CN 200910035643 A CN200910035643 A CN 200910035643A CN 101705836 B CN101705836 B CN 101705836B
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- gas
- coal
- jet
- flange
- flow
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Abstract
The invention relates to a jet control device and a method. The device comprises a main pipe, an assistant pipe, a control valve of the main pipe and the assistant pipe, and a triangular flange. The method comprises the following steps: injecting gas into a coal rock mass borehole through a gas injection pipe and a flange; pressurizing and monitoring the parameters of gas injection pressure and flow, opening a control valve of the assistant pipe after the pressurization achieves 1-6MPa, leading coal-gas jet to be performed at the condition of smaller jet flow, under the condition that the jet is confirmed to be controlled, gradually opening the control valve of the main pipe until the control valve of the main pipe is completely opened; when the jet flow of coal and gas exceeds that of the pipeline design, the opening of the control valve of the main pipe is gradually reduced until the control valve of the main pipe is completely closed, thus stimulating and controlling coal and gas bursting of the coal layer in the drill hole, ensuring that the jet can be controlled effectively, safely and reliably, realizing that ten thousand tons of coal are explored from single hole for and gas can be extracted and released for millions of cubic meters.
Description
Technical field
The present invention relates to a kind of novel coal mining and mash gas extraction technology, especially a kind of coal and projecting coal bed jet control device and method of gas that is applicable to low-permeability, low-intensity, high gas.
Background technology
Coal and gas are outstanding to be a big disaster of well worker Coal Production.Outstanding strong coal body destruction, coal and the gas of being accompanied by sprays, and form outburst hole and certain release scope, underground operators life and roadway and electromechanical equipment are damaged, even gas explosion takes place, enlarge the disaster scope, cause great casualties and property loss.
Since the outstanding four-stage that generally is divided into of coal and gas, promptly outstanding preparation, outstanding startup, prominent development and outstanding the termination.The outstanding preparatory stage has geostatic stress, gas energy savings, features such as geological structure and coal body are inhomogeneous, mining operation disturbance; The startup stage of outstanding, geostatic stress gradient, gas pressure gradient, the common coal body that destroys of coal body deadweight form the stress rupture ripple; In the prominent development stage, the stress rupture ripple forms slabbing and destroys in the expansion of coal body surface course, the carrying of desorb gas, pulverizing coal body; Outstanding termination phase, the depletion of stress rupture ripple.Conditions being possessed, four-stage can circulate and carry out.It is significant to utilize outstanding four-stage to excite and control coal and the outstanding coal mining of gas and mash gas extraction.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of simple in structure, be easy to control, safe and reliable, effective jet control device and method.
Technical scheme: jet control device of the present invention, comprise the looped pipeline of being responsible for and being communicated with tube wall before and after it, the described person in charge's middle part is provided with person in charge's by-pass valve control, the middle part of looped pipeline is provided with the looped pipeline by-pass valve control, the tube wall of being responsible for is provided with the flange that links to each other with air injection pipe, and the person in charge's both ends are provided with the triangle flange; The described flange that links to each other with air injection pipe is two, divides to be located at and is responsible for the tube wall front and rear portions.
Jet flow control method of the present invention:
A, with hole fixed interior pipe triangle flange and tiltedly draw anchor pole to connect of triangle flange and the coal and rock be responsible for, and crestal injection pipeline, by-pass valve control, manometer and sensor are connected on the flange;
B, open the valve that connects the gas injection flange, gas injection, pressurize and monitor parameters such as gas injection pressure, flow in coal and rock boring;
C, after gas injection, pressurize reach 1～6MPa, close the valve of gas injection flange;
D, open auxiliary tube control flap progressively make coal and gas jet flow less than carrying out under the 200kg/s condition, and monitoring jet flow gas pressure, flow;
E, confirming that jet flow is no more than under the condition of 100kg/s, progressively open person in charge's by-pass valve control, until opening fully, be responsible for this moment and the looped pipeline valve is opened simultaneously, makes the maximum spout flow be no more than specified coal and the gas jet flow flow 200kg/s that designs pipeline;
When f, jet flow are attenuated to feeder gas, close and be responsible for by-pass valve control and looped pipeline by-pass valve control;
G, repeatedly repeating step b, c, d, e and f, gas injection repeatedly, pressurize, jet flow when boring can't pressurize, finish whole process.
Beneficial effect: utilize boring to bore saturating coal seam; with the rock stratum as protection; the four-stage that utilizes gas to give prominence to excites the coal seam in the boring that coal takes place repeatedly artificially and gas is outstanding; outstanding coal and the ejection of gas two-phase flow are holed and extraction coal; and in the coal seam, form outburst hole and big release scope, pumping and mining pressure relief mash gas.With this excite with keyhole in that coal takes place is outstanding with gas in the coal seam, guarantee that jet flow controls effective, safe and reliable.Can realize ten thousand tons of single hole extraction coals, the millions of cubic meters of pumping and mining pressure relief mash gas.It is simple in structure, and easy operating is safe and reliable, has practicality widely.
Description of drawings
Fig. 1 is an apparatus structure schematic diagram of the present invention.
Fig. 2 is a triangle flange structure chart of the present invention.
Among the figure: 1-is responsible for by-pass valve control; 2-looped pipeline by-pass valve control; The 3-flange; 4-triangle flange; 5-is responsible for; The 6-looped pipeline.
The specific embodiment
Following structure accompanying drawing is further described one embodiment of the present of invention:
Shown in Figure 1, jet control device of the present invention mainly by be responsible for 5 and the looped pipeline 6 that is communicated with tube wall before and after it constitute, the person in charge 5 middle part is provided with is responsible for by-pass valve control 1, the middle part of looped pipeline 6 is provided with looped pipeline by-pass valve control 2, the person in charge 5 tube wall is provided with the flange 3 that links to each other with air injection pipe, flange 3 is two, divides to be located at and is responsible for the front and rear portions of 5 tube walls near looped pipeline 6 positions, connects crestal injection pipeline, by-pass valve control, manometer and sensor by flange 3.Being responsible for 5 both ends has fixing triangle flange 4, shown in Figure 2, all has connection holes on three angles of triangle flange 4, with the interior pipe triangle flange of boring with tiltedly draw anchor pole to be connected, and the raising reliability.
Jet flow control method of the present invention: will be responsible for the fixed interior pipe triangle flange of 5 triangle flange 4 and coal and rock boring and tiltedly draw anchor pole to connect, crestal injection pipeline, by-pass valve control, manometer and sensor are installed on flange 3, open the valve that connects gas injection flange 3, gas injection, pressurize and monitor parameters such as gas injection pressure, flow in coal and rock boring, the gas injection by-pass valve control is closed during pressurize, general gas injection, to keep-up pressure be 1～6MPa, monitors the parameters such as pressure, flow of gas injection, pressurize simultaneously.After pressure reached pressurize 1～6MPa, at first the open auxiliary tube control flap 2, and coal and gas jet flow are carried out under less than the 200kg/s condition, and monitored parameters such as jet flow gas pressure, flow; Confirming that jet flow is no more than under the condition of 100kg/s, progressively opening and be responsible for by-pass valve control 1, until opening fully, be responsible for this moment 5 and looped pipeline 6 open simultaneously, reach the maximum spout flow.The specified coal and the gas jet flow flow of design pipeline are 200kg/s, if exceed circuit design jet flow flow 200kg/s, progressively reduce to be responsible for the aperture of by-pass valve control 1, until closing fully, realize control jet flow function, guarantee that jet flow control is effective, safe and reliable.When jet flow in the pipeline is attenuated to when not having coal substantially, promptly during feeder gas, close and be responsible for by-pass valve control 1 and looped pipeline by-pass valve control 2, finish a circulation.Repeat gas injection, pressurize, form repeatedly gas injection, pressurize, jet flow, when boring can't pressurize, in the time of promptly can not forming coal and gas and give prominence to condition, finish whole process.
Claims (3)
1. jet control device, comprise the person in charge (5) and the looped pipeline (6) that is communicated with tube wall before and after it, it is characterized in that: the described person in charge's (5) middle part is provided with is responsible for by-pass valve control (1), the middle part of looped pipeline (6) is provided with looped pipeline by-pass valve control (2), the tube wall of being responsible for (5) is provided with the flange (3) that links to each other with air injection pipe, and the both ends of being responsible for (5) are provided with triangle flange (4).
2. jet control device according to claim 1 is characterized in that: the described flange that links to each other with air injection pipe (3) is two, divides to be located at the person in charge (5) tube wall front and rear portions.
One kind according to claim 1 the device the jet flow control method, it is characterized in that:
The interior pipe triangle flange that a, triangle flange (4) and the coal and rock boring that will be responsible for (5) are fixed and tiltedly draw anchor pole to connect, and crestal injection pipeline, by-pass valve control, manometer and sensor are connected on the flange (3);
B, open the valve that connects gas injection flange (3), gas injection, pressurize and monitor gas injection pressure, flow parameter in coal and rock boring;
C, after gas injection, pressurize reach 1～6MPa, close the valve of gas injection flange (3);
D, open auxiliary tube control flap (2) progressively make coal and gas jet flow less than carrying out under the 200kg/s condition, and monitoring jet flow gas pressure, flow;
E, confirming that the jet flow flow is no more than under the condition of 100kg/s, progressively open and be responsible for by-pass valve control (1), until opening fully, be responsible for (5) this moment and looped pipeline (6) valve is opened simultaneously, makes the maximum spout flow be no more than the specified coal and the gas jet flow flow 200kg/s of design pipeline;
When f, jet flow are attenuated to feeder gas, close and be responsible for by-pass valve control (1) and looped pipeline by-pass valve control (2);
G, repeatedly repeating step b, c, d, e and f, gas injection repeatedly, pressurize, jet flow when boring can't pressurize, finish whole process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100356439A CN101705836B (en) | 2009-09-30 | 2009-09-30 | Jet control device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100356439A CN101705836B (en) | 2009-09-30 | 2009-09-30 | Jet control device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101705836A CN101705836A (en) | 2010-05-12 |
| CN101705836B true CN101705836B (en) | 2011-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100356439A Expired - Fee Related CN101705836B (en) | 2009-09-30 | 2009-09-30 | Jet control device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101705836B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352768B (en) * | 2011-10-19 | 2013-09-11 | 中国矿业大学 | Gas drainage method and equipment with alternative drainage |
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2009
- 2009-09-30 CN CN2009100356439A patent/CN101705836B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101705836A (en) | 2010-05-12 |
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Granted publication date: 20110810 Termination date: 20160930 |
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| CF01 | Termination of patent right due to non-payment of annual fee |