CN102590886B - Method for determining initial destroy of baseboard of coal mine roadway immediately - Google Patents
Method for determining initial destroy of baseboard of coal mine roadway immediately Download PDFInfo
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- CN102590886B CN102590886B CN201210022959.6A CN201210022959A CN102590886B CN 102590886 B CN102590886 B CN 102590886B CN 201210022959 A CN201210022959 A CN 201210022959A CN 102590886 B CN102590886 B CN 102590886B
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Abstract
The invention discloses a method for determining the initial destroy of a baseboard of a coal mine roadway immediately. The method comprises the steps of firstly delineating an area where the baseboard is possibly destroyed, then making a transformed amplification observation instrument, and finally performing observations by using the transformed amplification observation instrument, so as to predicate the initial destroy situation of the baseboard in advance. According to the method, the situation of baseboard destroy can be immediately discovered in the roadway construction and a back way in a construction area with large burial depth and heavy stress, so that measures can be taken to avoid serious destroy.
Description
Technical field
The invention belongs to Coal Mining Technology field.
Background technology
Along with the increase of the pit mining degree of depth, the boundary condition of exploitation complicated, the Floor Heave in Roadway that tectonic structure, tomography etc. cause is more and more serious.At present, the monitoring of pucking generally adopts the tunnel cross method that lays out pile, and by long observation, obtains the Changing Pattern of pucking.Obviously, pucking is front, and observation is rear, and the tunnel of rear observation is difficult to administer in advance.Particularly for the tunnel in the dangerous coal seam of rock burst, the place ahead of meeting head on of tunnelling process is usually attended by that structure, coal rock layer textural anomaly, dynamic stress change greatly, gas is abnormal etc., the danger that structure type rock burst while occurring in tunnelling causes constantly increases, if predict in advance the slight change of base plate, control rock burst is had to positive role.Before also there is not large pucking distortion in tunnel, can find that base plate starts to destroy, then take the necessary measures, be the Optimal action of administering Floor Heave in Roadway.
Therefore the determination methods in advance of the tunnelling under tectonic province, heavily stressed, large Conditions of Buried Depth and way of escape coal seam floor failure is significant to deep tunnel hazard management.
Summary of the invention
The object of the invention is, invent a kind of method that adopts amplification principle immediately to judge roadway floor initial destroy.
Technical scheme of the present invention is:
The first step: the region that delineation base plate may destroy
In the soft-rock tunnel tunneling process of infrastructure complexity, adopt terrestrial stress practical observation method to carry out observation and obtain terrestrial stress data, the structural distribution situation occurring according to driving again, carry out analogy, analysis, the judgement of roadway deformation presentation attributes, obtain terrestrial stress size and Orientation, then in conjunction with ore deposit, press rule, mark off the region that coal seam floor failure may occur in tunnel.
Second step: make a distortion and amplify observation instrument
It is to connect a high-pressure liquid tube in the bottom of hydraulic jack that observation instrument is amplified in distortion, connects a hydraulic displacement meter on high-pressure liquid tube.
The 3rd step: amplify observation instrument with distortion and observe
On the base plate in the region of above-mentioned delineation, excavate out the square column body opening that a degree of depth reaches complete rock stratum, hole length and the wide 0.5m that is, dark 0.5-1.0m, is then placed in the hydraulic jack that amplifies observation instrument in hole, and piston is stretched out, in oil cylinder, be full of hydraulic oil, oil cylinder horizontal is at the bottom of hole, and its piston, facing to stress direction, is buried underground with cement pouring; Notice that piston extension can not bury reality, hydraulic displacement meter stretches out outside hole;
When floor strata stress increases, piston pressurized moves, and power is passed to hydraulic displacement meter, and according to hydraulic principle, hydraulic displacement meter amplifies the distortion of base plate, demonstrate reading, thereby look-ahead is to the initial destroy situation of base plate.
Good effect of the present invention is: 1., by observation, the analogy of terrestrial stress, the region of destroying occurs preliminary judgement base plate.2. adopt the initial destroy situation of amplifying the instant perception base plate of observation instrument, significant to control pucking.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, enforcement of the present invention is described.
Fig. 1 amplifies instrumentation allocation schematic diagram.
Embodiment
Those skilled in the art amplify instrumentation allocation schematic diagram according to the distortion shown in technical scheme and Fig. 1 and can implement, and at this, no longer repeat.
Claims (1)
1. an instant method of judging initial destroy of baseboard of coal mine roadway, is characterized in that, step is as follows:
The first step: the region that delineation base plate may destroy
In the soft-rock tunnel tunneling process of infrastructure complexity, adopt terrestrial stress practical observation method to carry out observation and obtain terrestrial stress data, the structural distribution situation occurring according to driving again, carry out analogy, analysis, the judgement of roadway deformation presentation attributes, obtain terrestrial stress size and Orientation, then in conjunction with ore deposit, press rule, mark off the region that coal seam floor failure may occur in tunnel;
Second step: make a distortion and amplify observation instrument
It is to connect a high-pressure liquid tube in the bottom of hydraulic jack that observation instrument is amplified in distortion, connects a hydraulic displacement meter on high-pressure liquid tube;
The 3rd step: amplify observation instrument with distortion and observe
On the base plate in the region of above-mentioned delineation, excavate out the square column body opening that a degree of depth reaches complete rock stratum, hole length and the wide 0.5m that is, dark 0.5-1.0m, the hydraulic jack that then distortion is amplified to observation instrument is placed in hole, and piston is stretched out, in hydraulic jack, be full of hydraulic oil, hydraulic jack horizontal is at the bottom of hole, and its piston, facing to stress direction, is buried underground with cement pouring; Notice that piston extension can not bury reality, hydraulic displacement meter stretches out outside hole;
When floor strata stress increases, piston pressurized moves, and power is passed to hydraulic displacement meter, and according to hydraulic principle, hydraulic displacement meter amplifies the distortion of base plate, demonstrate reading, thereby look-ahead is to the initial destroy situation of base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210022959.6A CN102590886B (en) | 2012-01-12 | 2012-01-12 | Method for determining initial destroy of baseboard of coal mine roadway immediately |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210022959.6A CN102590886B (en) | 2012-01-12 | 2012-01-12 | Method for determining initial destroy of baseboard of coal mine roadway immediately |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102590886A CN102590886A (en) | 2012-07-18 |
| CN102590886B true CN102590886B (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210022959.6A Expired - Fee Related CN102590886B (en) | 2012-01-12 | 2012-01-12 | Method for determining initial destroy of baseboard of coal mine roadway immediately |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808282B (en) * | 2014-03-17 | 2016-08-17 | 重庆交通大学 | A kind of anchorage structures displacement monitor and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581234B (en) * | 2009-06-29 | 2011-12-07 | 张平松 | Comprehensive underground test method for deformation and damage of terranes of mining top plate and mining bottom plate of coal bed |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ2000277A3 (en) * | 2000-01-24 | 2001-09-12 | Jaroslav Dvořák | Method and devices for preventing rock bursts, especially for use in underground works |
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2012
- 2012-01-12 CN CN201210022959.6A patent/CN102590886B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101581234B (en) * | 2009-06-29 | 2011-12-07 | 张平松 | Comprehensive underground test method for deformation and damage of terranes of mining top plate and mining bottom plate of coal bed |
Non-Patent Citations (2)
| Title |
|---|
| 潘立友.采场松软底板岩体侵入破坏规律.《岩土工程学报》.1998,第20卷(第5期),37-40. |
| 采场松软底板岩体侵入破坏规律;潘立友;《岩土工程学报》;19980930;第20卷(第5期);37-40 * |
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| CN102590886A (en) | 2012-07-18 |
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