CN201381879Y - Sound, light and electricity integration monitoring system for instability of surrounding rock - Google Patents
Sound, light and electricity integration monitoring system for instability of surrounding rock Download PDFInfo
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- CN201381879Y CN201381879Y CN200920032511U CN200920032511U CN201381879Y CN 201381879 Y CN201381879 Y CN 201381879Y CN 200920032511 U CN200920032511 U CN 200920032511U CN 200920032511 U CN200920032511 U CN 200920032511U CN 201381879 Y CN201381879 Y CN 201381879Y
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Abstract
The utility model discloses a sound, light and electricity integration monitoring system for the instability of surrounding rock, which comprises an optical borehole peering instrument, a sound emission device and a borehole stressmeter which are used for preliminarily monitoring the surrounding rock damage of the inner wall of the same borehole drilled on the side of a coal mine drivage roadway or a coalface roadway, as well as a control receiver arranged at the corresponding measuring point on the outer side of the borehole in the coal mine drivage roadway or the coalface roadway. The optical borehole peering instrument, the sound emission device and the borehole stressmeter are all connected with the control receiver which collects and displays the monitoring results that the optical borehole peering instrument, the sound emission device and the borehole stressmeter obtain; and the coalface roadway comprises a coalface machine road and a coalface wind road. The utility model has the advantages of reasonable design, simple and convenient operation and use, and accurate monitoring result, and can efficiently solve the practical problems of the prior single monitoring mean, such as low accuracy, data distortion, even failure monitoring in certain particular environment, and the like.
Description
Technical field
The utility model relates to ground and mining engineering technical field, especially relates to a kind of wall rock destabilization acousto-optic-electric integrated monitoring system.
Background technology
In ground and mining engineering, joint, crack and tomography are isostructure to be influenced because coal rock layer is subjected to, make coal rock layer show discontinuous and anisotropic characteristics, in addition the gas exist in the coal rock layer of water and compose simultaneously with the stress of primary rock and tectonic stress jointly to coal rock layer generation effect, make the physical property of coal rock layer and mechanical property become complicated more again.In engineering practice,, almost be impossible realize as solving practical problem with simple mathematical analysis and rock mechanics theory.Because after coal rock layer is subjected to above-mentioned random factors, constantly change in time with on the space, in different places,, formed the relative variation in three notions in Space Time-ground generally because the selection of artificial method has formed the variation characteristics of coal rock layer under different condition especially; And the diversity of its variation and complexity have brought development for mine geotechnical engineering detection technique, make the geotechnical engineering monitoring technology become a kind of main means that solve the mine great number of issues.
Nowadays, more to mine country rock monitoring technology means, for example acoustic emission, optical fiber, resistance stressometer etc., but all concentrate on a certain technological means, because coal rock layer is composed the diversity and the complexity of depositing, the maximization of bulk and disturbed by extraneous factor in the monitoring at the scene more, distortion phenomenon appears in a lot of testing results, and visible single monitoring means is carried out the rock body quality of mine monitoring and is difficult to engineering practice is realized enough effectively guidance in specific Space Time-ground scope.
In underground construction, coal rock layer is subjected to the joint, the isostructure influence of crack and tomography, coal rock layer shows discontinuous and anisotropic characteristics, in addition the gas exist in the coal rock layer of water and compose simultaneously with the stress of primary rock and tectonic stress jointly to coal rock layer generation effect, the influence of simultaneous exploitation disturbance, make the physical property and the mechanical property of coal rock layer become complicated more again, the situation that the coal rock layer that adopts certain monitoring means to reflect more intuitively to be subjected to the underground construction disturbance in different Space Time-ground scope changes, but under the external environment influence of complex geological conditions and variation, it is not high to make that precision has appearred in single monitoring means in observation process, data distortion, even cause monitors failure under some specific environment, can not well reflect the result of actual change.For example adopt single acoustic emission that the destructive process of rock mass is monitored, just eyes and hand have been lost as us, only go to listen the same with ear, we can make judgement accurately by sound for simple things, but complicated condition and disturbed down by external factor, this single means and function sometimes just fall flat, in like manner, single optical instrument or resistance stressometer etc., as our eyes and sense of touch, act on down the also also fict things change procedure that reflects separately.
The utility model content
Technical problem to be solved in the utility model is at above-mentioned deficiency of the prior art, a kind of wall rock destabilization acousto-optic-electric integrated monitoring system is provided, its reasonable in design and use easy and simple to handle, monitoring result is accurate, can effectively solve not high, the data distortion of precision that existing single monitoring means is occurred, under some specific environment even cause practical problem such as monitors failure.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of wall rock destabilization acousto-optic-electric integrated monitoring system, it is characterized in that: it is characterized in that: comprise and spy on instrument, acoustic emission device and borehole stressmeter, and be laid in the described colliery digging laneway in the boring outside or coal-face with the control receiver on the corresponding measuring point in the tunnel helping the optics boring that the country rock degree of impairment gradation of the same boring inwall that is drilled through monitors at colliery digging laneway or coal-face with the tunnel in tunnel in advance; Described boring is spied on instrument, acoustic emission device and borehole stressmeter and is all connect the control receiver that three institute monitoring result is gathered and shows; Described coal-face comprises coal-face machine lane and two tunnels of coal-face air way with the tunnel.
Described optics boring is spied on instrument, acoustic emission device and borehole stressmeter and all is connected by cable with the control receiver.
Described optics boring is spied on instrument for spying on instrument in the inner boring of carrying out 360 ° of boring.
The utility model compared with prior art has the following advantages: 1, can give full play to systematic advantage, the utility model collection is sound-optical-the electric Trinity, in observation process, interact, replenish mutually, remedied single monitoring means and be subjected to the interference of external factor and be easy to generate distortion phenomenon, utilize systematized advantage, result to monitoring, through after the network analysis, can at length carry out prediction to engineering, more effectively instruct and produce.2, carry out level disposes with suiting measures to local conditions, on monitoring means is disposed, according to on-the-spot actual needs, promptly in specific Space Time-ground scope, form stratified monitoring, to constantly impurities removal on by the basis of territory, goaf country rock damage unstability identification, carry very, perfect, draw targeted and guiding conclusion.3, brought into play the advantage of efficient in observation process, in the monitoring, need hole to the coal petrography wall, according to different monitoring needs, the drilling depth of being bored is also different, and the needs that have reach 10 meters even more than it.According to former single monitoring means, owing to consider the problem of distortion.Often to bore a plurality of borings, replenish observation, not only increased the number of boring, and consumed a large amount of time, particularly in competent bed, very expend time in the hole of drilling, the boring number can have influence on other operation in the site work more at most, has destroyed original construction organization, in the time of more in order to save time, cause drilling quality relatively poor, thereby influenced monitoring effect.The utility model just can be realized in a boring fully, has reduced the boring number, has reduced the too much influence to original construction organization.Guaranteed the monitoring effect in the high-quality boring.Simultaneously, in use of the present utility model, do not increase the staff, under original 1-2 name technician's cooperation, still can finish monitoring preferably, odds for effectiveness and obvious because of the integrated of monitoring means.4, the advantage that has logicality and accuracy, the utility model is integrated into system advantage with the advantage of several single monitoring meanss, learns from other's strong points to offset one's weaknesses, and has gathered the foundation for reasoning from logic, and demonstration just can obtain engineering practice is had the guilding principle of justice by analysis.Underground construction is because the extremely complexity that the influence of numerous uncertain factors becomes, by monitoring means to the coal rock layer under a certain specified conditions observe, the collection data, production practices could be effectively instructed in the demonstration analysis of science in addition, thereby the utility model can be the analytic demonstration from the data acquisition to the data better, and a kind of monitoring method of rigorous and science is provided.5, application value height, in gob side entry driving, to the destructiveness of coal column and the detection of affected by force, can calculate the rational width of the narrow coal column that stays by the utility model more accurately, to saving resource and roadway arrangement is had very strong directive significance in the low stress area.6, monitoring result is accurate, it is the sound-optical-electric Trinitarian system monitoring technology of collection, the peculiar sign that the coal rock layer that relies on sound-optical-power technology to observe shows in variation, give full play to the system advantage after the three forms totally, in good time, on the spot, the monitoring of science, carry out prediction accurately, for the design and production practices reliable theoretical foundation and guidance are provided, be in particular in following main aspect: 1) can be to the information and the data of the various aspects that monitor, carry out filtering screening, Intelligent Recognition and signal excavate, thereby can increase substantially the accuracy and the reliability of prediction, improve the accuracy of decision-making, through prediction accurately, can obtain more accurate surrounding rock failure scope, original support pattern is optimized design.For the supporting scheme of large section roadway, supporting parameter and pillar size design have proposed science foundation accurately, provide new approach for large section roadway supporting control under the complicated seam mode of occurence simultaneously; 2) receiving the boring of sound source information, optics by acoustic emission spies on instrument the boring inwall is subjected to manifesting of stress rupture situation and stress numerical that borehole stressmeter reflects, the increase of ickings amount when this boring is played in combination simultaneously, judge whether this zone has outstanding possibility, take measure targetedly, trouble-saving generation; 3) to what adopt bolt support technology water location or structural belt arranged, destroy situation by coal petrography in boring water burst and the hole, be the influence of prevention of water to anchoring effect, and consider that bigger variation has taken place for zone of fracture coal petrography physics, mechanical property, there is pin ground that reinforce support is carried out in this location, prevents tunnel roof fall or wall caving; 4) at coal-face, by sound-optical-electric integrated monitor, improved the accuracy of the first or periodic weighting prediction in old top, strengthen the old top of face timbering quality prevention and press to work plane and bring harm; 5) work plane and the top coal in the hard difficult inbreak of top board emits the bad top-coal caving face of putting property, that adopts generally that the method for loosening blasting in advance or preliminary infusion solves top board or top coal emits putting property problem, the scope and the effect of sometimes pre-explosion or pre-water filling are not fully aware of, by sound-optical-electric integrated monitor, just can recognize after the pre-explosion the moistening friable state of coal body after roof cracking situation or the pre-water filling, for the parameter of later on pre-explosion or pre-water filling selects to provide rational basis; 6) applied widely, the utility model also has a wide range of applications in constructing tunnel, (granite, gneiss etc.) have monitoring effect preferably in hard rock, timely monitoring to country rock after the explosion, can observe the degree of injury of explosion to rock mass, thereby provide foundation for adjusting blasting parameter,, ensure that workmanship has significance improving rock stability; 7) the utility model is in exploitation disturbance area, part, can in 10 meters of the degree of depth and above boring, detect geological condition, and in 360 degree arbitrary orientations, survey, the tax of understanding coal rock layer is deposited situation and surveyed geological structure very strong practicality.In sum, the utility model is the sound-optical-electric Trinitarian system monitoring technology of collection, in same boring, rely on sound-optical-electric three to observe the peculiar sign that coal rock layer shows in variation, interact, replenish mutually, just use ear simultaneously as the people, eyes and hand are comprehensively observed the same to target, give full play to the system advantage after forming totally, in good time, on the spot and the monitoring of science, on basis, draw valuable observation foundation to the identification of country rock damage unstability, carry out prediction accurately, for the theory foundation of instructing design and production practices provides reliable foundation, given full play to the function of system, more science is accurate to make monitoring result, has bigger practical value in production practices; In addition, the utility model has very strong advantage under special complex environment, has reduced the problem of dtmf distortion DTMF in the single means observation process to greatest extent, for engineering design and production practices provide accurate prediction.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 carries out the FB(flow block) of acousto-optic electricity integrated monitor for the utility model.
Fig. 3 is the bore position schematic diagram of the utility model in the digging laneway of colliery.
Fig. 4 is the bore position schematic diagram of the utility model in coal-face usefulness tunnel.
Fig. 5 is that the utility model is at the monitoring result schematic diagram of coal-face with borehole stressmeter in the tunnel.
Description of reference numerals:
1-boring; Instrument is spied in the boring of 2-optics; 3-acoustic emission device;
The 4-borehole stressmeter; 5-controls receiver; 7-coal-face machine lane;
8-coal-face air way; 9-pushes up always; 10-directly pushes up;
The 11-false roof; The 12-coal-face; The 13-measuring point;
14-colliery digging laneway.
The specific embodiment
As shown in Figure 1 and Figure 2, the utility model comprises spies on instrument 2, acoustic emission device 3 and borehole stressmeter 4 to helping the optics boring that the country rock degree of impairment gradation of same boring 1 inwall that is drilled through monitors at colliery digging laneway 14 or coal-face with the tunnel in tunnel in advance, and is laid in the described colliery digging laneway 14 in boring 1 outside or coal-face with the control receiver 5 on the corresponding measuring point 13 in the tunnel.Described boring is spied on instrument 2, acoustic emission device 3 and borehole stressmeter 4 and is all connect the control receiver 5 that three institute monitoring result is gathered and shows.And the boring of described optics is spied on instrument 2, acoustic emission device 3 and borehole stressmeter 4 and all is connected by cable with control receiver 5, and described optics boring is spied on instrument 2 and spied on instrument for the boring that can carry out 360 ° in 1 inside of holing.
As shown in Figure 3, the observation process of the utility model in the tunnelling process may further comprise the steps:
With boring 1 is that the reason that exploration hole is arranged in tunnel group is: in the coal mine roadway tunneling process, general tunnel or shed ding support tunnel of adopting the supporting of anchor rete cord, in most cases this type of tunnel all is that tunnel group is at first destroyed, destruction unstability just because of tunnel group, thereby just can cause top board (comprise from top to bottom old top 9, directly push up 10 and false roof 11) unstable failure, to hole 1 is arranged in after the tunnel helps, and promptly can observe the process of tunnel group coal and rock stress destruction meticulously comprehensively.
The first step, the inwall of spying on 2 pairs of monitored borings 1 of instrument by optics boring are that hole wall is monitored in detail, and with monitoring result reach control receiver 5 show synchronously and record, by controlling the monitoring result that instrument 2 is spied in receiver 5 shown optics borings, preliminary judge whether the inwall of boring 1 has the damage and the phenomenon of caving in, simultaneously to the crack that is produced on the described inwall coal and rock force-bearing situation analysis of being correlated with.
Particularly, in the coal mine roadway driving, at first make a call to one and hole 1 in the meet head on tunnel group of certain distance of hysteresis, arrange again that afterwards optics boring spies on the inwall of 2 pairs of borings 1 of instrument and detect in detail, spy on instrument 2 by optics boring, whether the hole inwall that can intuitively see boring 1 has the damage and the phenomenon of caving in, simultaneously the analysis of relevant coal and rock force-bearing situation is carried out in the crack that is produced on the inwall of described hole, can in boring 1, carry out 360 degree rotations because instrument 2 is spied in described optics boring, thereby can carry out Preliminary study the country rock degree of impairment.
Second goes on foot, further monitors with the inwall of 3 pairs of borings 1 of acoustic emission device, and with monitoring result reach control receiver 5 show synchronously and record, by the monitoring result of the shown acoustic emission device 3 of control receiver 5, tentatively judge the country rock early stage information that microscopic damage destroys under the stress effect.
In this step, because considering drills in the first step promptly drills through in 1 and second step of boring mounting arrangements optics boring and spies in the process of instrument 2, can be that certain destruction is caused in inside to 1 the hole wall of holing inevitably all, thereby for avoiding because of drilling and optics boring being installed spying on 2 pairs of some illusions that hole wall damaged of instrument, improve the precision of monitoring result, then tentatively judge the country rock early stage information that microscopic damage destroys under the stress effect with acoustic emission device 3.
The 3rd step, the inwall of spying on 2 pairs of borings 1 of instrument by optics boring carry out second time and monitor in detail, and with monitoring result reach control receiver 5 show synchronously and record, the monitoring result that control receiver 5 is write down in this monitoring result of simultaneously optics boring being spied on instrument 2 and the first step combine analyzes comparison, judges the damage degree of the big or small and 1 inner coal and rock of holing of 1 the suffered internal force of inwall of holing.
In this step, be subjected to when avoiding acoustic emission device 3 to carry out acoustic emission detection the interference of extraneous factor to produce the situation of information distortion, thereby after 3 monitorings of acoustic emission device finish, continuation is spied in the hole of 2 pairs of borings 1 of instrument situation and is monitored by optics boring, and be that monitoring result compares analysis in conjunction with the observed result first time that instrument 2 is spied in optics boring, by finding after twice analysis on monitoring result in front and back of spying on instrument 2 that optics is holed, the stress suffered as if hole wall is bigger, it is just serious that then it is subjected to the destruction of stress, phenomenons such as caving in appears in corresponding meeting, can clearly show boring 1 place's coal and rock destructiveness.
The 4th goes on foot, monitors by the surrouding rock stress of 4 pairs of boring of borehole stressmeter, 1 inwall, and monitoring result is reached control receiver 5 show synchronously and record, simultaneously spy on the whole synthesis monitoring result that the monitoring result of twice monitoring result of instrument 2 and acoustic emission device 3 is carried out analysis-by-synthesis and record boring 1 in conjunction with the first step to the optics boring that control receiver 5 is write down in three steps.
In sum, in the tunnelling process, by being after acousto-optic electricity integrated monitor is carried out in the exploration hole gradation, can carry out accurate discrimination to described colliery digging laneway 14 (specifically being boring 1 place) this moment country rock damage unstability situation of being adopted the vacant lot band of living in to beating in advance in the hysteresis boring 1 that the tunnel of certain distance helps of meeting head on.
It should be noted that: in the tunnelling process, tunnel for anchor rete cord and shed ding support, the twist drill hole that generally do not need to pinch is observed, when running into tomography, during particular times such as zone of fracture or the pouring of top board crack water droplet are bigger, meet head on to make a call to a boring or to roof bolt hole after, can spy on instrument by boring intuitively observes the situation of fragmentation in the hole or water burst, provide foundation according to water burst and coal petrography degree of crushing for strengthening face timbering, and the observation process of the described back of meeting head on is monitored according to monitoring system described in the utility model and monitoring method still.
In conjunction with Fig. 4, Fig. 5, the observation process of the utility model in the coal mining process may further comprise the steps:
Described coal-face comprises coal-face machine lane 7 and the coal-face air way 8 that is parallel to each other with the tunnel, and the tunnel of described coal-face machine lane 7 and coal-face air way 8 is helped and all is drilled with a plurality of borings 1 and described boring 1 and all is laid on the coal and rock between coal-face machine lane 7 and the coal-face air way 8.Position and structure that a plurality of borings 1 that drilled through are helped in the tunnel of described coal-face machine lane 7 and coal-face air way 8 are all symmetrical.That is to say, be laid in a plurality of borings of helping in 7 tunnels, coal-face machine lane 1 and the position and the structure that are laid in a plurality of borings 1 of helping in coal-face air way 8 tunnels, all about the central axis bilateral symmetry of 8 of coal-face machine lane 7 and coal-face air ways.And described a plurality of boring 1 is even laying, and the spacing that adjacent two borings are 1 is 5 ± 1m.
In the present embodiment, the spacing that adjacent two borings are 1 is 5m.
The first step, the inwall of spying on 2 pairs of monitored borings 1 of instrument by optics boring are that hole wall is monitored in detail, and with monitoring result reach control receiver 5 show synchronously and record, by controlling the monitoring result that instrument 2 is spied in receiver 5 shown optics borings, preliminary judge whether the inwall of boring 1 has the damage and the phenomenon of caving in, simultaneously to the crack that is produced on the described inwall coal and rock force-bearing situation analysis of being correlated with.
Second goes on foot, further monitors with the inwall of 3 pairs of borings 1 of acoustic emission device, and with monitoring result reach control receiver 5 show synchronously and record, by the monitoring result of the shown acoustic emission device 3 of control receiver 5, tentatively judge the country rock early stage information that microscopic damage destroys under the stress effect.
The 3rd step, the inwall of spying on 2 pairs of borings 1 of instrument by optics boring carry out second time and monitor in detail, and with monitoring result reach control receiver 5 show synchronously and record, the monitoring result that control receiver 5 is write down in this monitoring result of simultaneously optics boring being spied on instrument 2 and the first step combine analyzes comparison, judges the damage degree of the big or small and 1 inner coal and rock of holing of 1 the suffered internal force of inwall of holing.
The 4th goes on foot, monitors by the surrouding rock stress of 4 pairs of boring of borehole stressmeter, 1 inwall, and monitoring result is reached control receiver 5 show synchronously and record, simultaneously spy on the whole synthesis monitoring result that the monitoring result of twice monitoring result of instrument 2 and acoustic emission device 3 is carried out analysis-by-synthesis and record boring 1 in conjunction with the first step to the optics boring that control receiver 5 is write down in three steps.
In sum, in the coal mining process, help, play a plurality of borings every 5 meters in tunnel, two lanes in rib the place ahead (being coal-face machine lane 7 and coal-face air way 8), at first each boring 1 is inner arranges that earlier optics boring spies on instrument 2, and the 1 inner wall-rock crack of holing etc. is tentatively understood; Arrange that then 3 pairs of coal bodies of acoustic emission device break the energy information that sends behind the ring at the coal body under the bearing pressure effect and monitor; Afterwards, spy on instrument 2 by optics boring again and further strengthen the degree of impairment of rib in described a plurality of borings 1 hole is observed, reflect the force-bearing situation of coal body, analyze the bearing pressure distribution situation in coal-face 12 the place aheads according to hole wall coal body crack; Arrange borehole stressmeter 4 at last, the result who reflects with borehole stressmeter 4 spies on result of detection reflection coal-face 12 the place aheads of instrument 2 in conjunction with acoustic emission device 3 and optics boring distributing discipline of abutment pressure, it is same to the work plane of coal and gas outburst danger is arranged, coal and gas are outstanding to have necessary relation with stress, can monitor out stress intensity by sound-optical-electric Trinitarian monitoring means, finally possible outburst danger be carried out prediction the coal body effect.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (3)
1. wall rock destabilization acousto-optic-electric integrated monitoring system, it is characterized in that: comprise and spy on instrument (2), acoustic emission device (3) and borehole stressmeter (4), and be laid in the control receiver (5) on the corresponding measuring point (13) in described colliery digging laneway (14) outside the boring (1) or the coal-face usefulness tunnel helping the optics boring that the country rock degree of impairment gradation of same boring (1) inwall that is drilled through monitors at colliery digging laneway (14) or coal-face with the tunnel in tunnel in advance; Described boring is spied on instrument (2), acoustic emission device (3) and borehole stressmeter (4) and is all connect the control receiver (5) that three institute monitoring result is gathered and shows; Described coal-face comprises coal-face machine lane (7) and (8) two tunnels of coal-face air way with the tunnel.
2. according to the described wall rock destabilization acousto-optic-electric integrated monitoring system of claim 1, it is characterized in that: described optics boring is spied on instrument (2), acoustic emission device (3) and borehole stressmeter (4) and all is connected by cable with control receiver (5).
3. according to claim 1 or 2 described wall rock destabilization acousto-optic-electric integrated monitoring systems, it is characterized in that: the boring of described optics is spied on instrument (2) and is spied on instrument for the boring that can carry out 360 ° in boring (1) inside.
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Cited By (6)
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CN102182512A (en) * | 2011-03-10 | 2011-09-14 | 北京大学深圳研究生院 | Unit structure for coal mine roof sound emission monitoring |
CN101526009B (en) * | 2009-04-09 | 2012-10-24 | 西安科技大学 | Wall rock destabilization acousto-optic-electric integrated monitoring system and monitoring method thereof |
CN104373154A (en) * | 2014-10-09 | 2015-02-25 | 神华集团有限责任公司 | Stability monitoring method of roadway top plate |
CN104914484A (en) * | 2015-05-31 | 2015-09-16 | 西安科技大学 | Roadway surrounding rock stability combined testing device and testing method |
CN111396128A (en) * | 2020-02-28 | 2020-07-10 | 北京科技大学 | Mining surrounding rock fracture sliding starting condition and instability process analysis method and system |
CN114199435A (en) * | 2021-12-10 | 2022-03-18 | 黑龙江科技大学 | Device, system and method for testing stress of surrounding rock of underground mining roadway of coal mine and peeping cracks |
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2009
- 2009-04-09 CN CN200920032511U patent/CN201381879Y/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101526009B (en) * | 2009-04-09 | 2012-10-24 | 西安科技大学 | Wall rock destabilization acousto-optic-electric integrated monitoring system and monitoring method thereof |
CN102182512A (en) * | 2011-03-10 | 2011-09-14 | 北京大学深圳研究生院 | Unit structure for coal mine roof sound emission monitoring |
CN104373154A (en) * | 2014-10-09 | 2015-02-25 | 神华集团有限责任公司 | Stability monitoring method of roadway top plate |
CN104914484A (en) * | 2015-05-31 | 2015-09-16 | 西安科技大学 | Roadway surrounding rock stability combined testing device and testing method |
CN111396128A (en) * | 2020-02-28 | 2020-07-10 | 北京科技大学 | Mining surrounding rock fracture sliding starting condition and instability process analysis method and system |
CN114199435A (en) * | 2021-12-10 | 2022-03-18 | 黑龙江科技大学 | Device, system and method for testing stress of surrounding rock of underground mining roadway of coal mine and peeping cracks |
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Granted publication date: 20100113 Termination date: 20110409 |