CN104594949B - A kind of Gernral Check-up method of roadway supported by bolt country rock - Google Patents
A kind of Gernral Check-up method of roadway supported by bolt country rock Download PDFInfo
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- CN104594949B CN104594949B CN201510023006.5A CN201510023006A CN104594949B CN 104594949 B CN104594949 B CN 104594949B CN 201510023006 A CN201510023006 A CN 201510023006A CN 104594949 B CN104594949 B CN 104594949B
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- 239000011435 rock Substances 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims abstract description 129
- 238000006073 displacement reaction Methods 0.000 claims abstract description 88
- 238000004873 anchoring Methods 0.000 claims abstract description 14
- 230000001066 destructive effect Effects 0.000 claims abstract description 8
- 230000001052 transient effect Effects 0.000 claims description 6
- 230000001687 destabilization Effects 0.000 claims description 4
- 239000000523 sample Substances 0.000 claims description 3
- 238000005065 mining Methods 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000002405 diagnostic procedure Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035899 viability Effects 0.000 description 1
Classifications
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- 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
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- 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
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention provides a kind of Gernral Check-up method of roadway supported by bolt country rock, comprise the steps: 1) choose roadway supported by bolt monitored area; 2) monitoring anchor pole, monitoring anchor cable are chosen; 3) monitoring point for displacement is set; 4) equipment connects; 5) anchor pole or anchorage cable anchoring parameter acquisition; 6) country rock surface displacement data acquisition; 7) roadway supported by bolt country rock is carried out Gernral Check-up. The invention process is simple, and cost is low, and automaticity is high, and belongs to non-destructive monitoring, and the original supporting intensity of roadway supported by bolt and surrounding rock stability are not interfered with; Roadway supported by bolt can be monitored by the present invention in real time, by the immediate status that the person that can enable mining operations to the in real time monitoring of roadway supported by bolt fully grasps roadway supported by bolt surrounding rock stability, is conducive to the maintenance of roadway supported by bolt.
Description
Technical field
The invention belongs to bolt support technology field, especially relate to a kind of Gernral Check-up method of roadway supported by bolt country rock.
Background technology
The influence factor of the surrounding rock stability of roadway supported by bolt mainly has rock mass strength, rock mass structure region feature, developmental joint fissure degree, subsoil water, the stress of primary rock, tectonic stress, mining influence and adjacent Engineering Disturbance. Rock mass strength, rock mass structure region feature, developmental joint fissure degree, subsoil water and construction method affect the anchoring ultimate bearing capacity of anchor pole; The stress of primary rock, tectonic stress, adopt bearing capacity and adjacent Engineering Disturbance directly affects the performance of anchor pole service load. Field engineering practice have shown that, some tunnels are because anchor-holding force of anchor bolt is low, the low large deformation often causing institute's supported laneway country rock of service load even destroys; Other tunnels be likely to when roadway surrounding rock surface displacement is extremely low because of anchor pole service load more than anchoring ultimate bearing capacity and flash disruption, its destroying infection and consequence are even more serious. Therefore, in order to prevent roadway supported by bolt wall rock destabilization and destroy, its country rock is carried out effectively monitoring and diagnosis is particularly important.
The unstability of roadway supported by bolt is diagnosed and has carried out substantial amounts of research by China's mining industry research worker, and the diagnostic method of current roadway surrounding rock mainly carries out surrounding rock stability monitoring and judgement from roadway surrounding rock rupture zone state, surrounding rock displacement, the service load of surrounding rock supporting anchor pole, rockbolt stress. Yet with roadway supported by bolt, surrounding rock stability influence factor is numerous, the deformation of country rock can not organically be combined by the unstability diagnostic method of current above-mentioned several main roadway supported by bolt with the duty of anchor pole, it is impossible to, effectively improving stability of surrounding rocks in roadway is differentiated comprehensively; And roadway supported by bolt is carried out large-scale long term monitoring, often cause the coal mining enterprise's a large amount of consumption on human and material resources, cause sharply increasing of production cost. Therefore, being badly in need of one effectively can monitor roadway supported by bolt country rock health, and diagnostic method with low cost.
Roadway supported by bolt surrounding rock stability it is crucial that supporting is effective, and the effective most strong evidence one of supporting is that anchor pole service load is less than anchor rod ultimate bearing capacity, two is that between every 2 anchor poles (anchor cable), the roadway surrounding rock wall surface displacement at midpoint is more than the displacement of single anchor rod (anchor cable) supporting point, and less than marginal value.
For the problems referred to above and in conjunction with the analysis of the author, the support characteristic that the present invention intends from roadway supported by bolt is started with, and based on anchor pole (anchor cable) Anchorage Parameters and country rock wall-anchor pole relative displacement, sets up roadway supported by bolt surrounding rock stability and sentences method for distinguishing. By the enforcement of the present invention, roadway supported by bolt is being carried out on the basis of anchor pole (anchor cable) anchor structure parameter and country rock wall-anchor pole relative displacement monitoring, dynamic situation of change according to anchor structure parameter and country rock wall and anchor pole relative displacement predicts roadway supported by bolt surrounding rock stability in time, roadway support intensity is adjusted in good time, guaranteeing that tunnel can keep stablizing of roadway surrounding rock in viability, this is of great significance realizing intrinsically safe mine tool.
Summary of the invention
In order to solve above-mentioned technical problem, the present invention provides a kind of and implements simply, and cost is low, the Gernral Check-up method of the roadway supported by bolt country rock that automaticity is high, and it belongs to non-destructive monitoring, and the original supporting intensity of roadway supported by bolt and surrounding rock stability are not interfered with.
The technical solution used in the present invention, comprises the steps:
1) according to roadway supported by bolt adjoining rock stability implementations and roadway surrounding rock geological conditions, carry out region division to tunnel need to be monitored, choose roadway support weakness stage and the relatively unstable region of country rock as monitored area;
2) longitudinal direction of roadway supported by bolt along monitored area, the two some anchor poles helped choosing the some anchor poles on the top board of roadway supported by bolt and roadway supported by bolt help monitoring anchor pole respectively as Roof Monitor anchor pole and two; Choose the some anchor cables on the top board of roadway supported by bolt as Roof Monitor anchor cable, choose the two of roadway supported by bolt and help the supporting anchorage cable of shoulder as side shoulder monitoring anchor cable;
3) longitudinal direction of roadway supported by bolt along monitored area, helps at the two of roadway supported by bolt and is respectively provided with multiple two and helps country rock wall monitoring point for displacement; The top board of roadway supported by bolt arranges multiple roof rock wall monitoring point for displacement;
4) multiple joints of lossless for Anchorage Parameters Acquisition Instrument are respectively and fixedly installed to Roof Monitor anchor pole, two help monitoring anchor pole, Roof Monitor anchor cable and side shoulder monitoring anchor cable tail end; And the joint of lossless for each Anchorage Parameters Acquisition Instrument is connected with the DATA IN terminal of the lossless Acquisition Instrument of Anchorage Parameters; The data output terminal of lossless for Anchorage Parameters Acquisition Instrument is connected with computer; The probe of multiple displacement transducers is pressed respectively and contacts on the two country rock walls helping country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement, the magnet base of multiple displacement transducers is separately mounted on corresponding anchor pole, displacement transducer is connected with computer by data acquisition box;
5) joint of the lossless Acquisition Instrument of Anchorage Parameters each a period of time to Roof Monitor anchor pole, two help monitoring anchor pole, Roof Monitor anchor cable and side shoulder monitoring anchor cable launch a transient impact, the joint of the lossless Acquisition Instrument of Anchorage Parameters by Roof Monitor anchor pole, two help the echo of monitoring anchor pole, Roof Monitor anchor cable and side shoulder monitoring anchor cable to be sent to the lossless Acquisition Instrument of Anchorage Parameters, Anchorage Parameters non-destructive monitoring Acquisition Instrument is drawn and is stored Roof Monitor anchor pole, two helps the transient state of monitoring anchor pole, Roof Monitor anchor cable and side shoulder monitoring anchor cable to impulse waveform; The shocking waveshape collected is sent to computer by the lossless Acquisition Instrument of Anchorage Parameters, shocking waveshape is analyzed by computer, obtain Roof Monitor anchor pole, two help monitoring anchor pole, Roof Monitor anchor cable and the side shoulder monitoring respective anchoring ultimate load of anchor cable and service load, and be depicted as curve;
6) relative displacement of country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement and corresponding anchor pole or anchor cable is helped in displacement transducer monitoring two, data acquisition box helps the relative displacement data of country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement to be sent to computer by collect all two, and computer helps the displacement of country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement to be depicted as curve chart by all for tunnel two;
7) computer to Roof Monitor anchor pole, two help monitoring anchor pole, Roof Monitor anchor cable and side shoulder monitoring anchor cable the limit anchoring bearing capacity and service load curve and all two help the displacement curve of country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement to be analyzed, if a certain limit anchoring bearing capacity and service load curve there occurs kick, then can be considered corresponding anchor pole or failure of cable; If a certain displacement curve there occurs kick, then can be considered that corresponding two help the wall rock destabilization near country rock wall monitoring point for displacement or roof rock wall monitoring point for displacement, computer sends alarm.
Compared with prior art, the invention has the beneficial effects as follows:
1. the invention process is simple, and cost is low, and automaticity is high, and belongs to non-destructive monitoring, and the original supporting intensity of roadway supported by bolt and surrounding rock stability are not interfered with.
2. roadway supported by bolt can be monitored by the present invention in real time, by the immediate status that the person that can enable mining operations to the in real time monitoring of roadway supported by bolt fully grasps roadway supported by bolt surrounding rock stability, is conducive to the maintenance of roadway supported by bolt.
3. the present invention is using the relative displacement of roadway supported by bolt surface and monitoring anchor pole, anchorage cable anchoring parameter as the inspection target of roadway surrounding rock Gernral Check-up, this inspection target meaning is clear and definite, deformation of the surrounding rock in tunnel and rockbolt stress organically can be united, deformation of the surrounding rock in tunnel and anchor pole (anchor cable) duty can be reflected more accurately.
Accompanying drawing explanation
Fig. 1 is that the present invention is in the drift section supporting of roadway supported by bolt and the layout drawing of monitoring point.
Fig. 2 is present invention monitoring point layout drawing on roadway supported by bolt longitudinal direction.
Fig. 3 is information gathering of the present invention, conveying flow figure.
Fig. 4 is displacement transducer layout drawing of the present invention.
Fig. 5 is Anchorage Parameters non-destructive monitoring instrument of the present invention monitoring layout drawing.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be described in detail.
A kind of Gernral Check-up method of roadway supported by bolt country rock, comprises the steps:
1) roadway supported by bolt monitored area is chosen: according to roadway supported by bolt adjoining rock stability implementations and roadway surrounding rock geological conditions, carry out region division to tunnel need to be monitored, choose roadway support weakness stage and the relatively unstable region of country rock as monitored area.
2) monitoring anchor pole, monitoring anchor cable are chosen: as shown in Figure 1, 2, the longitudinal direction of roadway supported by bolt along monitored area, choose two row's anchor poles at middle part on the top board of roadway supported by bolt as Roof Monitor anchor pole 1, Roof Monitor anchor pole 2; Choose respectively the two of roadway supported by bolt help middle part one row anchor pole as two help monitoring anchor pole (include in Fig. 1 left side monitoring anchor pole 3 and right side monitoring anchor pole 4). Choose row's anchor cable at middle part on the top board of roadway supported by bolt as Roof Monitor anchor cable 7, choose the two of roadway supported by bolt and help the supporting anchorage cable of shoulder to help shoulder monitoring anchor cable (the left side shoulder monitoring anchor cable 5 including in Fig. 1 and right side shoulder monitoring anchor cable 6) as two.
3) monitoring point for displacement is set: the longitudinal direction of roadway supported by bolt along monitored area, helps at the two of roadway supported by bolt and be respectively provided with multiple two and help country rock wall monitoring point for displacement (the left side country rock wall monitoring point for displacement 8 including in Fig. 1 and right side country rock wall monitoring point for displacement 9); On the top board of roadway supported by bolt, middle part arranges multiple roof rock wall monitoring point for displacement 11; Roof rock wall monitoring point for displacement 11 is between two adjacent Roof Monitor anchor cables 7.
4) equipment connect: as in Figure 3-5, multiple joints 131 of lossless for Anchorage Parameters Acquisition Instrument 13 are respectively and fixedly installed to Roof Monitor anchor pole, two help monitoring anchor pole, Roof Monitor anchor cable and side shoulder monitoring anchor cable tail end; And the DATA IN terminal of the joint 131 of lossless for each Anchorage Parameters Acquisition Instrument 13 with the lossless Acquisition Instrument 13 of Anchorage Parameters is connected; The data output terminal of lossless for Anchorage Parameters Acquisition Instrument 13 is connected with computer 16; The probe pressure of multiple displacement transducers 14 is contacted on the two country rock walls helping country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement, and the magnet base 141 of multiple displacement transducers 14 is separately mounted on corresponding anchor pole, displacement transducer 14 is connected with computer 16 by data acquisition box 15. Two help country rock wall monitoring point for displacement 8 and two to help the anchor pole respectively left side corresponding to country rock wall monitoring point for displacement 9 to monitor anchor pole 3 and right side monitoring anchor pole 4; Anchor pole corresponding to roof rock wall monitoring point for displacement 11 is Roof Monitor anchor pole 1.
5) anchor pole or anchorage cable anchoring parameter acquisition: the joint 131 of the lossless Acquisition Instrument 13 of Anchorage Parameters is at set intervals to Roof Monitor anchor pole, left side monitoring anchor pole 3, right side monitoring anchor pole 4, Roof Monitor anchor cable 7, monitoring anchor cable 5 is takeed on by left side and a transient impact launched by right side shoulder monitoring anchor cable 6, and joint 131 passes through data wire by Roof Monitor anchor pole, left side monitoring anchor pole 3, right side monitoring anchor pole 4, Roof Monitor anchor cable 7, the echo of left side shoulder monitoring anchor cable 5 and right side shoulder monitoring anchor cable 6 is sent to the lossless Acquisition Instrument 13 of Anchorage Parameters, and Anchorage Parameters non-destructive monitoring Acquisition Instrument 13 draws selected Roof Monitor anchor pole, left side monitoring anchor pole 3, right side monitoring anchor pole 4, Roof Monitor anchor cable 7, the transient state of left side shoulder monitoring anchor cable 5 and right side shoulder monitoring anchor cable 6 impulses waveform, and the shocking waveshape collected is sent to main control computer 16, the shocking waveshape that Anchorage Parameters non-destructive monitoring Acquisition Instrument 13 is collected by computer 16 by data processing software is analyzed, and obtains Roof Monitor anchor pole, left side monitoring anchor pole 3, right side monitoring anchor pole 4, Roof Monitor anchor cable 7, the anchoring ultimate load of left side shoulder monitoring anchor cable 5 and right side shoulder monitoring anchor cable 6 and service load, and it is depicted as curve.
6) country rock surface displacement data acquisition: two relative displacements helping country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement and corresponding anchor pole or anchor cable monitored by displacement transducer 14, data acquisition box 15 helps the relative displacement data of country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement to be sent to computer 16 by collect all two, and computer 16 helps the displacement of country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement to be depicted as curve chart by all for tunnel two.
7) roadway supported by bolt country rock is carried out Gernral Check-up: computer 16 to Roof Monitor anchor pole, two help monitoring anchor pole, Roof Monitor anchor cable and side shoulder monitoring anchor cable the limit anchoring bearing capacity and service load curve and all two help the displacement curve of country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement to be analyzed, if a certain limit anchoring bearing capacity and service load curve there occurs kick, then can be considered corresponding anchor pole or failure of cable; If a certain displacement curve there occurs kick, then can be considered that corresponding two help the wall rock destabilization near country rock wall monitoring point for displacement or roof rock wall monitoring point for displacement, computer 16 sends alarm, reminds mining activity personnel in time corresponding region roadway surrounding rock to be reinforced.
Claims (1)
1. a Gernral Check-up method for roadway supported by bolt country rock, comprises the steps:
1) according to roadway supported by bolt adjoining rock stability implementations and roadway surrounding rock geological conditions, carry out region division to tunnel need to be monitored, choose roadway support weakness stage and the relatively unstable region of country rock as monitored area;
2) longitudinal direction of roadway supported by bolt along monitored area, the two some anchor poles helped choosing the some anchor poles on the top board of roadway supported by bolt and roadway supported by bolt help monitoring anchor pole respectively as Roof Monitor anchor pole and two; Choose the some anchor cables on the top board of roadway supported by bolt as Roof Monitor anchor cable, choose the two of roadway supported by bolt and help the supporting anchorage cable of shoulder as side shoulder monitoring anchor cable;
3) longitudinal direction of roadway supported by bolt along monitored area, helps at the two of roadway supported by bolt and is respectively provided with multiple two and helps country rock wall monitoring point for displacement; The top board of roadway supported by bolt arranges multiple roof rock wall monitoring point for displacement;
4) multiple joints of lossless for Anchorage Parameters Acquisition Instrument are respectively and fixedly installed to Roof Monitor anchor pole, two help monitoring anchor pole, Roof Monitor anchor cable and side shoulder monitoring anchor cable tail end; And the joint of lossless for each Anchorage Parameters Acquisition Instrument is connected with the DATA IN terminal of the lossless Acquisition Instrument of Anchorage Parameters; The data output terminal of lossless for Anchorage Parameters Acquisition Instrument is connected with computer; The probe of multiple displacement transducers is pressed respectively and contacts on the two country rock walls helping country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement, the magnet base of multiple displacement transducers is separately mounted on corresponding anchor pole, displacement transducer is connected with computer by data acquisition box;
5) joint of the lossless Acquisition Instrument of Anchorage Parameters each a period of time to Roof Monitor anchor pole, two help monitoring anchor pole, Roof Monitor anchor cable and side shoulder monitoring anchor cable launch a transient impact, the joint of the lossless Acquisition Instrument of Anchorage Parameters by Roof Monitor anchor pole, two help the echo of monitoring anchor pole, Roof Monitor anchor cable and side shoulder monitoring anchor cable to be sent to the lossless Acquisition Instrument of Anchorage Parameters, Anchorage Parameters non-destructive monitoring Acquisition Instrument is drawn and is stored Roof Monitor anchor pole, two helps the transient state of monitoring anchor pole, Roof Monitor anchor cable and side shoulder monitoring anchor cable to impulse waveform; The shocking waveshape collected is sent to computer by the lossless Acquisition Instrument of Anchorage Parameters, shocking waveshape is analyzed by computer, obtain Roof Monitor anchor pole, two help monitoring anchor pole, Roof Monitor anchor cable and the side shoulder monitoring respective anchoring ultimate load of anchor cable and service load, and be depicted as curve;
6) relative displacement of country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement and corresponding anchor pole or anchor cable is helped in displacement transducer monitoring two, data acquisition box helps the relative displacement data of country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement to be sent to computer by collect all two, and computer helps the displacement of country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement to be depicted as curve chart by all for tunnel two;
7) computer to Roof Monitor anchor pole, two help monitoring anchor pole, Roof Monitor anchor cable and side shoulder monitoring anchor cable the limit anchoring bearing capacity and service load curve and all two help the displacement curve of country rock wall monitoring point for displacement and roof rock wall monitoring point for displacement to be analyzed, if a certain limit anchoring bearing capacity and service load curve there occurs kick, then can be considered corresponding anchor pole or failure of cable; If a certain displacement curve there occurs kick, then can be considered that corresponding two help the wall rock destabilization near country rock wall monitoring point for displacement or roof rock wall monitoring point for displacement, computer sends alarm.
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| CN201510023006.5A CN104594949B (en) | 2015-01-16 | 2015-01-16 | A kind of Gernral Check-up method of roadway supported by bolt country rock |
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| CN201510023006.5A CN104594949B (en) | 2015-01-16 | 2015-01-16 | A kind of Gernral Check-up method of roadway supported by bolt country rock |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108590764A (en) * | 2018-03-26 | 2018-09-28 | 西安科技大学 | Random background encourages the fully mechanized coal face environmental hazard early warning system and method for early warning of anchor pole array sensing |
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| CN109063299B (en) * | 2018-07-16 | 2023-07-07 | 山东科技大学 | Rock mechanical parameter and anchor rod installation parameter determining method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202041651U (en) * | 2011-04-22 | 2011-11-16 | 山东理工大学 | Deep surrounding rock burst non-destructive real-time magnetic monitoring and predicting system |
| CN102768027B (en) * | 2012-07-20 | 2014-12-10 | 山东理工大学 | Method for monitoring whole-process safe displacement of underground surrounding rock |
| CN103267977B (en) * | 2013-04-24 | 2015-12-02 | 山东理工大学 | Underground engineering wall rock disaster whole time interval induced polarization monitoring method |
| CN203570357U (en) * | 2013-10-31 | 2014-04-30 | 安徽建筑大学 | Anchoring on-line nondestructive testing device for mine laneway |
| CN203773334U (en) * | 2014-04-01 | 2014-08-13 | 厦门市江华科技开发有限公司 | Multichannel non-contact rock shift real-time monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108590764A (en) * | 2018-03-26 | 2018-09-28 | 西安科技大学 | Random background encourages the fully mechanized coal face environmental hazard early warning system and method for early warning of anchor pole array sensing |
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