CN102590886A - 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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- CN102590886A CN102590886A CN2012100229596A CN201210022959A CN102590886A CN 102590886 A CN102590886 A CN 102590886A CN 2012100229596 A CN2012100229596 A CN 2012100229596A CN 201210022959 A CN201210022959 A CN 201210022959A CN 102590886 A CN102590886 A CN 102590886A
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- base plate
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- observation instrument
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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 the coal mining technical field.
Background technology
Along with the increase of the pit mining degree of depth, the boundary condition of exploitation complicated, the tunnel pucking that tectonic structure, tomography etc. cause is more and more serious.At present, the tunnel cross method that lays out pile is generally adopted in the monitoring of pucking, through long observation, obtains the Changing Pattern of pucking.Obviously, pucking is preceding, observation after, the tunnel of back 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 usually is attended by that structure, coal rock layer textural anomaly, dynamic stress change greatly, gas is unusual etc.; The dangerous constantly increase that structure type rock burst when occurring in tunnelling causes; If foresee the slight change of base plate in advance, the control rock burst had positive role.Before big pucking distortion does not also take place in the tunnel, can find that base plate begins to destroy, take the necessary measures then, be the best measure of administering the tunnel pucking.
Therefore the determination methods in advance of tunnelling under tectonic province, heavily stressed, the big buried depth condition and way of escape coal seam floor failure is significant to the deep tunnel hazard management.
Summary of the invention
The objective of the invention is, invent a kind of amplification principle that adopts and judge the initial method of destroying of roadway floor immediately.
Technical scheme of the present invention is:
The first step: the zone that the delineation base plate possibly destroy
In the soft-rock tunnel tunneling process of infrastructure complicacy; Adopt the terrestrial stress practical observation method to observe and obtain the terrestrial stress data; The structure spread situation that occurs according to driving is again carried out analogy, analysis, the judgement of roadway deformation presentation attributes, obtains the terrestrial stress size and Orientation; Combine the ore deposit to press rule then, mark off the zone that coal seam floor failure possibly take place in the 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 the high-pressure liquid tube.
The 3rd step: amplify observation instrument with distortion and observe
On the base plate in the zone of above-mentioned delineation, excavate out the square column body opening that a degree of depth reaches complete rock stratum, the long and wide 0.5m that is in hole; Dark 0.5-1.0m, the hydraulic jack that will amplify observation instrument then places in the hole, and piston is stretched out; Be full of hydraulic oil in the oil cylinder; The oil cylinder horizontal is at the bottom of the hole, and its piston is buried underground with the cement pouring facing to stress direction; Notice that the piston extension can not bury reality, the hydraulic displacement meter stretches out outside the hole;
When floor strata stress increased, the piston pressurized moved, and power is passed to the hydraulic displacement meter, and according to hydraulic principle, the hydraulic displacement meter amplifies the distortion of base plate, demonstrates reading, thereby predicts the initial destruction situation of base plate in advance.
Good effect of the present invention is: 1. through observation, the analogy of terrestrial stress, the zone of destruction takes place in the preliminary judgement base plate.2. adopt the initial destruction situation of amplifying the instant perception base plate of observation instrument, significant to the control pucking.
Description of drawings
Below in conjunction with description of drawings enforcement of the present invention.
Fig. 1 amplifies observation instrument to arrange synoptic diagram.
Embodiment
The technical staff in present technique field can implement based on technical scheme and distortion amplification observation instrument layout sketch map shown in Figure 1, no longer repeats at this.
Claims (1)
1. judge the initial method of destroying of coal mine roadway base plate immediately for one kind, it is characterized in that step is following:
The first step: the zone that the delineation base plate possibly destroy
In the soft-rock tunnel tunneling process of infrastructure complicacy; Adopt the crustal stress practical observation method to observe and obtain the crustal stress data; The structure spread situation that occurs based on driving is carried out analogy, analysis, the judgement of roadway deformation presentation attributes again, obtains the crustal stress size and Orientation; Combine the ore deposit to press rule then, mark off the zone that coal seam floor failure possibly take place in the 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 the high-pressure liquid tube;
The 3rd step: amplify observation instrument with distortion and observe
On the base plate in the zone of above-mentioned delineation, excavate out the square column body opening that a degree of depth reaches complete rock stratum, the long and wide 0.5m that is in hole; Dark 0.5-1.0m, the hydraulic jack that will amplify observation instrument then places in the hole, and piston is stretched out; Be full of hydraulic oil in the oil cylinder; The oil cylinder horizontal is at the bottom of the hole, and its piston is buried underground with the cement pouring facing to stress direction; Notice that the piston extension can not bury reality, the hydraulic displacement meter stretches out outside the hole;
When floor strata stress increased, the piston pressurized moved, and power is passed to the hydraulic displacement meter, and according to hydraulic principle, the hydraulic displacement meter amplifies the distortion of base plate, demonstrates reading, thereby predicts the initial destruction situation of base plate in advance.
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 true CN102590886A (en) | 2012-07-18 |
| CN102590886B CN102590886B (en) | 2014-02-19 |
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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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808282A (en) * | 2014-03-17 | 2014-05-21 | 重庆交通大学 | Anchorage structure displacement monitoring device and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001053658A2 (en) * | 2000-01-24 | 2001-07-26 | Jaroslav Dvorak | Method and devices for preventing rock bursts, especially for use in underground works |
| 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 |
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2012
- 2012-01-12 CN CN201210022959.6A patent/CN102590886B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001053658A2 (en) * | 2000-01-24 | 2001-07-26 | Jaroslav Dvorak | Method and devices for preventing rock bursts, especially for use in underground works |
| 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 (1)
| Title |
|---|
| 潘立友: "采场松软底板岩体侵入破坏规律", 《岩土工程学报》, vol. 20, no. 5, 30 September 1998 (1998-09-30), pages 37 - 40 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103808282A (en) * | 2014-03-17 | 2014-05-21 | 重庆交通大学 | Anchorage structure displacement monitoring device and method |
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| CN102590886B (en) | 2014-02-19 |
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Granted publication date: 20140219 Termination date: 20220112 |