CN105928649A - System and method for measuring stress relief time lag characteristics of deeply-buried high-energy-storage rock mass - Google Patents

Abstract

The invention discloses a system for measuring the stress relief time lag characteristics of a deeply-buried high-energy-storage rock mass, and the system comprises a measuring rod, a first displacement sensor, three second displacement sensors, a third displacement sensor, fourth displacement sensors, displacement meter anchor heads, a measuring head, strain gauges, anchor rod stress meters, anchor rods, sound emission sensors, a collector, and a computer. The system can obtain an initial stress relief adjustment evolution law, and the law provides an important theoretical basis and high engineering practical value for deepening the knowing of a high ground stress condition high-energy-storage rock mass cave surrounding rock unloading damage mechanism, and developing the stable analysis and supporting and protection measures (supporting and protection position, supporting and protection time and supporting and protection depth) of a high ground stress condition cave and a surrounding rock. According to the invention, the system can directly obtain the stress relief time lag characteristics and evolution law of the high-energy-storage rock mass with a crystal unloading friction time effect.

Description

Buried high energy storage rock mass stress release time lag characteristic measures system and method

Technical field

The present invention relates to rock mechanics experiment field, in particular to a kind of buried high energy storage rock mass stress Release time lag characteristic measures system and method.

Background technology

After under further investigation large ground pressure, hole wall ledge excavation formed, in country rock Unloading Damage of Soft Soil from Table and in expansion evolutionary process, including top layer, the local rock mass having disengaged from parent rock in the wall of part hole Resilience disintegration evolutionary process and the scientific phenomena presented, find under large ground pressure because country rock excavates Failure and deformation of surrounding rocks that Unloading Damage of Soft Soil causes mechanism, analysis theories and suppress its destroy development Maintaining methods etc., lack the rationale support meeting on-the-spot actual observation phenomenon, use the most extensively The classical elastic plastic theory used explains still certain limitation.

The most highly under stress condition underground cavern excavation country rock Unloading Damage of Soft Soil from outward appearance to inner essence, by shallow To deeply, the reflection of this phenomenon is that rock mass stress release ruptures with rock convergence measure and pushes away in time after excavation Move the process constantly developed, disclose high-ground stress height energy storage rock mass surrounding rock of chamber Stress Release and have Time stickiness characteristic, crystal off-load friction in high-ground stress height energy storage rock mass that what it substantially embodied is Time effect.At present, not yet there are effective means and technology can directly obtain and have crystal off-load The high energy storage rock mass stress release time lag characteristic of fraction time effect and Evolution.

Summary of the invention

The present invention is aiming at above-mentioned technical problem, it is provided that a kind of buried high energy storage rock mass stress release Time lag characteristic measures system and method, and the primary stress release that system and method is obtained adjusts develops Rule is to in-depth large ground pressure height energy storage rock mass surrounding rock of chamber Unloading Damage of Soft Soil mechanism understanding, development Large ground pressure cavern and Analysis of Surrounding Rock and supporting measure (supporting position, supporting time, The supporting degree of depth) there is important theoretical foundation and engineering practical value.

For achieving the above object, when the buried high energy storage rock mass stress designed by this utility model discharges Stagnant characteristic measurement system, it is characterised in that: it includes measuring staff, the first displacement transducer, second Displacement sensor, triple motion sensor, the 4th displacement transducer, displacement meter anchor head, gauge head, should Become meter, bolt stress meters, anchor pole, acoustic emission sensor, Acquisition Instrument and computer；

Wherein, original position large scale rock sample to be measured vertically offers sound wave peephole, deep displacement and Stress trajectory hole, bolthole and boring video recording boring, described sound wave peephole has four, four sound Ripple peephole is arranged in four corners of original position large scale rock sample to be measured, and described bolthole has four Individual, four boltholes are arranged in the middle part of original position large scale rock sample to be measured on four angles of rectangular area, Described deep displacement and stress trajectory hole and boring video recording boring are arranged in original position large scale to be measured In the rectangular area, middle part of rock sample, described deep displacement and stress trajectory pitch-row are from the big chi of original position to be measured The distance of the grooving right hand edge of degree rock sample is equal to boring video recording hole spacing original position to be measured large scale rock The distance of the grooving left hand edge of sample, deep displacement and stress trajectory pitch-row are from original position large scale rock to be measured The distance of the grooving forward edge of sample is equal to boring video recording hole spacing original position to be measured large scale rock sample The distance of grooving posterior edges；

The middle part of the edge of described original position large scale rock sample to be measured be respectively equipped with one first flat Face displacement observation punctuate, original position large scale rock sample right hand edge to be measured and the first plane position of posterior edges Move observation point and be provided with the 4th displacement transducer, the grooving right hand edge of original position large scale rock sample to be measured The middle part in outside is provided with the second in-plane displancement observation point, after the grooving of original position large scale rock sample to be measured Middle part outside lateral edges also is provided with the second in-plane displancement observation point, original position large scale rock sample to be measured Periphery is provided with on X axis datum point and Y axis datum point, X axis datum point and Y axis datum point all pacifies Fill the first displacement transducer, the second in-plane displancement observation point and X outside described grooving right hand edge Connected by measuring staff between first displacement transducer of axle datum mark, outside grooving posterior edges Between first displacement transducer of two in-plane displancement observation points and Y axis datum point by measuring staff even Connecing, original position large scale rock sample to be measured is provided with three surface displacement measuring points, and three surface displacement measuring points divide It is not positioned at the outside of any three boltholes；

The platform being arranged over being fixed by bearing of described original position large scale rock sample to be measured, described platform Being provided with three second displacement sensors, three second displacement sensors pass through measuring staff respectively with corresponding Surface displacement measuring point connect；

The aperture in described deep displacement and stress trajectory hole is provided with gauge head, deep displacement and stress trajectory Lead in being provided with triple motion sensor, described deep displacement and stress trajectory hole in the gauge head in aperture, hole Crossing grouting and be provided with displacement meter anchor head, displacement meter anchor head connects triple motion sensor by measuring staff；

Described strain is in respect of multiple, and multiple strain gauges are uniformly arranged on deep displacement and stress trajectory hole Internal different depth, is all embedded with anchor pole, each anchor pole in the anchor pole grout compartment of four boltholes On be respectively mounted bolt stress meters；

The middle part in each deep displacement and stress trajectory hole buries acoustic emission sensor, each bolthole underground The bottom of anchor pole grout compartment bury acoustic emission sensor underground；

Buried high energy storage rock mass stress release time lag characteristic measures system and also includes for four sound Ripple peephole carries out the sonic test instrument of acoustic detection；Buried high energy storage rock mass stress release time lag is special Property measure system also include for boring video recording boring carry out original position large scale rock sample crackle to be measured The optical imaging instrument of observation；

Described first displacement transducer, second displacement sensor, triple motion sensor, the 4th Displacement sensor, strain gauge, bolt stress meters, acoustic emission sensor, sonic test instrument and light study Signal output part as instrument all connects the signal input part of computer by Acquisition Instrument.

One utilizes above-mentioned buried high energy storage rock mass stress release time lag characteristic mensuration system to carry out should Power release time lag characteristic method for measuring, it is characterised in that it comprises the steps:

Step 1: use joint-cutting method to be cut on the left of original position large scale rock sample to be measured and right side, Form the grooving of the original position large scale rock sample left and right sides to be measured, and carry out original position large scale rock sample to be measured Primary stress measure, it is thus achieved that the initial plane stress level on country rock horizontal plane；

Step 2: after position primary stress residing for original position large scale rock sample to be measured has measured, Carrying out the cutting of other periphery, cutting work is carried out opposite side and is synchronized, substep cutting, point three step cuttings Completing, the depth of cut scope of three steps is respectively 600～800mm, 300～400mm, 300～400 Mm, utilizes second displacement sensor to carry out to be measured to surface displacement measuring point often walking in cutting process Large scale rock sample surface displacement observation in situ；Utilize triple motion sensor to deep displacement and stress Peephole carries out original position large scale rock sample deep displacement to be measured observation；Utilize sonic test instrument to sound wave Peephole carries out velocity of wave observation in original position large scale rock sample to be measured cutting unloading process；Utilize strain gauge Deep displacement and stress trajectory hole carry out original position large scale rock sample cutting process medium and deep to be measured should Power is observed；Utilize strain gauge that deep displacement and stress trajectory hole carry out original position large scale rock sample to be measured Anchor stress change observation in cutting process；Utilize optical imaging instrument that boring video recording boring is treated Survey rock sample crackle observation in original position large scale rock sample cutting process；Acoustic emission sensor is to deep displacement And stress trajectory hole carries out the acoustic emission of rock masses fracturing in original position large scale rock sample cutting process to be measured Space orientation and injury tolerance observation.

Utilizing the present invention can obtain primary stress release and adjust Evolution, this rule is to in-depth highland Stress condition height energy storage rock mass surrounding rock of chamber Unloading Damage of Soft Soil mechanism recognizes, and develops large ground pressure hole Room and Analysis of Surrounding Rock and supporting measure (supporting position, supporting time, the supporting degree of depth) have Important theoretical foundation and engineering practical value.Can directly obtain by the present invention and there is crystal off-load The high energy storage rock mass stress release time lag characteristic of fraction time effect and Evolution.

Accompanying drawing explanation

Fig. 1 is the planar structure schematic diagram of the present invention；

Fig. 2 is the cross-sectional view of the present invention；

Fig. 3 is the circuit part structured flowchart of the present invention.

In figure: 1 platform, 2 sound wave peepholes, 3 surface displacement measuring points, 4 first planes Displacement observation punctuate, 4.1 second in-plane displancement observation points, 5 deep displacements and stress trajectory Hole, 6 groovings, 7 original position large scale rock samples to be measured, 7.1 rectangular areas, 8 bearings, 9 Bolthole, 10 boring video recording borings, 11 X axis datum points, 11.1 Y axis datum points, 12 measuring staffs, 13 first displacement transducers, 13.1 second displacement sensors, 13.2 the 3rd Displacement transducer, 13.3 the 4th displacement transducers, 14 displacement meter anchor heads, 15 gauge heads, 16 Strain gauge, 17 bolt stress meters, 18 anchor poles, 19 acoustic emission sensors, 20 collections Instrument, 21 computers, 22 anchor pole grout compartments, 23 sonic test instrument, 24 optical imaging instruments.

Detailed description of the invention

The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.

Buried high energy storage rock mass stress release time lag characteristic as shown in Figures 1 to 3 measures system, its bag Include measuring staff the 12, first displacement transducer 13, second displacement sensor 13.1, triple motion sensing Device the 13.2, the 4th displacement transducer 13.3, displacement meter anchor head 14, gauge head 15, strain gauge 16, Bolt stress meters 17, anchor pole 18, acoustic emission sensor 19, Acquisition Instrument 20 and computer 21；

Wherein, original position large scale rock sample 7 to be measured vertically offers sound wave peephole 2, position, deep Move and stress trajectory hole 5, bolthole 9 and boring video recording boring 10, described sound wave peephole 2 Having four, four sound wave peepholes 2 are arranged in four angles of original position large scale rock sample 7 to be measured Falling, described bolthole 9 has four, and four boltholes 9 are arranged in original position large scale rock sample 7 to be measured On four angles of rectangular area 7.1, middle part, described deep displacement and stress trajectory hole 5 and boring record As boring 10 is arranged in the rectangular area, middle part 7.1 of original position large scale rock sample 7 to be measured, institute State deep displacement and stress trajectory hole 5 grooving 6 right hand edge apart from original position large scale rock sample 7 to be measured Distance equal to boring video recording boring 10 apart from grooving 6 left side of original position large scale rock sample 7 to be measured The distance of edge, deep displacement and stress trajectory hole 5 are apart from the grooving of original position large scale rock sample 7 to be measured The distance of 6 forward edge holes 10 apart from original position large scale rock sample 7 to be measured equal to boring video recording The distance of grooving 6 posterior edges；

The middle part of the edge of described original position large scale rock sample 7 to be measured is respectively equipped with one first (the first in-plane displancement observation point 4 is used for carrying out surveying large scale in situ in-plane displancement observation point 4 Rock sample 7 surface displacement is observed), the of original position large scale rock sample 7 right hand edge to be measured and posterior edges One in-plane displancement observation point 4 is provided with the 4th displacement transducer 13.3, original position large scale rock to be measured Middle part outside grooving 6 right hand edge of sample 7 is provided with the second in-plane displancement observation point 4.1 (second The initial of position should for carrying out surveying residing for original position large scale rock sample 7 for in-plane displancement observation point 4.1 Power is measured), the middle part outside grooving 6 posterior edges of original position large scale rock sample 7 to be measured also is provided with Second in-plane displancement observation point 4.1, original position large scale rock sample 7 periphery to be measured is provided with X axis datum It is respectively mounted on point 11 and Y axis datum point 11.1, X axis datum point 11 and Y axis datum point 11.1 First displacement transducer 13, the second in-plane displancement observation point outside described grooving 6 right hand edge It is connected by measuring staff 12 between 4.1 and the first displacement transducer 13 of X axis datum point 11, cuts The second in-plane displancement observation point 4.1 outside groove 6 posterior edges and Y axis datum point 11.1 Being connected by measuring staff 12 between first displacement transducer 13, original position large scale rock sample 7 to be measured is provided with Three surface displacement measuring points 3, three surface displacement measuring points 3 lay respectively at any three boltholes 9 Outside；

Platform 1 (the work being arranged over being fixed by bearing 8 of described original position large scale rock sample 7 to be measured Word steel), described platform 1 is provided with three second displacement sensors 13.1, and three the second displacements pass Sensor 13.1 is connected with corresponding surface displacement measuring point 3 by measuring staff 12 respectively；

The aperture in described deep displacement and stress trajectory hole 5 is provided with gauge head 15, deep displacement and should Triple motion sensor 13.2, described deep displacement it is provided with in the gauge head 15 in power peephole 5 aperture And in stress trajectory hole 5, grouting being provided with displacement meter anchor head 14, displacement meter anchor head 14 passes through Measuring staff 12 connects triple motion sensor 13.2；

Described strain gauge 16 has multiple, and multiple strain gauges 16 are uniformly arranged on deep displacement and stress Different depth within peephole 5, is all embedded with in the anchor pole grout compartment 22 of four boltholes 9 Anchor pole 18, each anchor pole 18 is respectively mounted bolt stress meters 17；Deep displacement and stress hole are main It is displacement within rock sample and STRESS VARIATION in observation cutting process；Bolthole mainly observes cutting During anchor pole anchor force change；Original in cutting process splitting mainly is observed in boring video recording boring Gap and the change in newborn crack；The ripple of rock sample rock mass in sound wave peephole mainly observation cutting process Speed change.

Acoustic emission sensor 19 is buried at the middle part in each deep displacement and stress trajectory hole 5 underground, each The bottom of the anchor pole grout compartment 22 of bolthole 9 buries acoustic emission sensor 19 underground；

Buried high energy storage rock mass stress release time lag characteristic measures system and also includes for four sound Ripple peephole 2 carries out the sonic test instrument 23 of acoustic detection；Buried high energy storage rock mass stress discharges Time lag characteristic measures system and also includes for boring video recording boring 10 is carried out original position large scale to be measured The optical imaging instrument 24 of rock sample crackle observation；

Described first displacement transducer 13, second displacement sensor 13.1, triple motion sensor 13.2, the 4th displacement transducer 13.3, strain gauge 16, bolt stress meters 17, voice sending sensor The signal output part of device 19, sonic test instrument 23 and optical imaging instrument 24 is all by Acquisition Instrument 20 Connect the signal input part of computer 21.

In technique scheme, described original position large scale rock sample 7 to be measured is square rock sample, to be measured The side size range of large scale rock sample 7 is 600～800mm in situ, original position large scale rock sample 7 to be measured Altitude range be 1200～1600mm.Rock sample length × width × height=the 1:1:2 so cut.

In technique scheme, described grooving 6 is ring-type grooving, the length range of this ring-type grooving Being 700～900mm, the width range of ring-type grooving is 56～75mm, the degree of depth model of ring-type grooving Enclose is 1200～1600mm.

In technique scheme, described sound wave peephole 2, deep displacement and stress trajectory hole 5, The hole depth of boring video recording boring 10 is equal, and described sound wave peephole 2, deep displacement and stress are seen Gaging hole 5, boring video recording boring 10 aperture equal and diameter is 56mm.This diameter range energy Ensureing that probe is not easy to block in test process, this design can guarantee that the accuracy of monitoring result.

In technique scheme, described sound wave peephole 2, deep displacement and stress trajectory hole 5, The hole depth of boring video recording boring 10 is 2m, described sound wave peephole 2, deep displacement and stress Peephole 5, the aperture of boring video recording boring 10 are 56mm.This design can guarantee that monitoring result Accuracy.

In technique scheme, each sound wave peephole 2 distance away from grooving 6 corresponding sides equal and Distance range is 50～80mm；Described deep displacement and stress trajectory hole 5 are right apart from grooving 6 The distance range at edge is 250～280mm, described boring video recording boring 10 distance grooving 6 left side The distance range of edge is 250～280mm；Described each bolthole 9 away from grooving 6 corresponding sides away from It is 150～200mm from equal and distance range.This design can guarantee that the accuracy of monitoring result.

In technique scheme, it is provided with by grouting in described deep displacement and stress trajectory hole 5 Three displacement meter anchor heads 14, three displacement meter anchor heads 14 are separately positioned on deep displacement and stress sight The upper, middle and lower of gaging hole 5.Realize observing respectively displacement and the STRESS VARIATION of different depth.

A kind of utilize above-mentioned buried high energy storage rock mass stress release time lag characteristic to measure system to carry out Stress Release time lag characteristic method for measuring, it comprises the steps:

Step 1: use joint-cutting method to be cut on the left of original position large scale rock sample 7 to be measured and right side (being cut by handhold portable rock drill), forms original position large scale rock sample 7 to be measured left The grooving 6 of right both sides, and carry out the primary stress measurement of original position large scale rock sample 7 to be measured, it is thus achieved that Initial plane stress level on country rock horizontal plane；

Step 2: after position primary stress residing for original position large scale rock sample 7 to be measured has measured, i.e. Can carry out the cutting of other periphery, cutting work is carried out opposite side and is synchronized, substep cutting, and point three steps are cut Having cut, the depth of cut scope of three steps is respectively 600～800mm, 300～400mm, 300～400 Mm, utilizes second displacement sensor 13.1 to enter surface displacement measuring point 3 often walking in cutting process Row original position large scale rock sample 7 surface displacement to be measured observation；Utilize triple motion sensor 13.2 right Deep displacement and stress trajectory hole 5 carry out original position large scale rock sample 7 deep displacement to be measured observation；Profit With sonic test instrument 23, sound wave peephole 2 is carried out original position large scale rock sample 7 to be measured and cut off-load During velocity of wave observation；Strain gauge 16 is utilized to carry out to be measured to deep displacement and stress trajectory hole 5 Large scale rock sample 7 cutting process medium and deep stress trajectory in situ；Utilize strain gauge 16 to position, deep Move and stress trajectory hole 5 carries out anchor stress change in original position large scale rock sample 7 cutting process to be measured Observation；Utilize optical imaging instrument 24 that boring video recording boring 10 is carried out original position large scale rock sample to be measured Rock sample crackle observation in 7 cutting process；Acoustic emission sensor 19 is to deep displacement and stress trajectory Hole 5 carries out the acoustic emission space orientation of rock masses fracturing in original position large scale rock sample 7 cutting process to be measured Observe with injury tolerance；

Step 3: the initial plane on country rock horizontal plane that Acquisition Instrument 20 is collected by computer 21 Stress level data, original position large scale rock sample 7 surface displacement to be measured observation data, original position to be measured are big The observation of yardstick rock sample 7 deep displacement, original position large scale rock sample 7 to be measured cut velocity of wave in unloading process Observation data, original position large scale rock sample 7 cutting process medium and deep stress trajectory data to be measured, to be measured Anchor stress change observation data, original position large scale to be measured in large scale rock sample 7 cutting process in situ Rock sample crackle observation data, original position large scale rock sample 7 cutting process to be measured in rock sample 7 cutting process The acoustic emission space orientation of middle rock masses fracturing and injury tolerance observation data, set up respectively various data with The variation relation curve of time, it is achieved buried high energy storage rock mass stress release time lag characteristic measures.

In the step 1 of technique scheme, joint-cutting method is used to carry out original position large scale rock sample 7 to be measured Primary stress measure, it is thus achieved that the concrete grammar of the initial plane stress level on country rock horizontal plane Carry out when the primary stress of original position large scale rock sample 7 to be measured is measured first to original position to be measured for: joint-cutting method Left side and the right side of large scale rock sample 7 are cut, and i.e. form original position large scale rock sample 7 to be measured The grooving 6 of the left and right sides, by first on X axis datum point 11 and Y axis datum point 11.1 Displacement sensor 13 is observed the change in displacement of the second in-plane displancement observation point 4.1 and is observed, logical Cross formula (1), formula (2) calculates, it is thus achieved that the initial plane stress level on country rock horizontal plane；

$\left.\begin{array}{c}{\mathrm{\σ}}_x=\frac{2W_x\mathrm{\ρ}E}{L\[(3+\mathrm{\μ})-\frac{2(1+\mathrm{\μ})}{{\mathrm{\ρ}}^2+1}\]}\\ \mathrm{\ρ}=\frac{2x}{L}+\sqrt{\frac{4x^2+L^2}{L^2}}\end{array}\right\}---\left(1\right)$

$\left.\begin{array}{c}{\mathrm{\σ}}_y=\frac{2W_y\mathrm{\ρ}E}{L\[(3+\mathrm{\μ})-\frac{2(1+\mathrm{\μ})}{{\mathrm{\ρ}}^2+1}\]}\\ \mathrm{\ρ}=\frac{2y}{L}+\sqrt{\frac{4y^2+L^2}{L^2}}\end{array}\right\}---\left(2\right)$

Wherein: L is the length of original position large scale rock sample 7 both sides to be measured grooving 6；X is grooving 6 The second in-plane displancement observation point 4.1 outside right hand edge is away from this grooving 6 distance between center line, and y is The second in-plane displancement observation point 4.1 outside grooving 6 posterior edges away from this grooving 6 centrage away from From, W_x、W_yIt is respectively two the second in-plane displancement observation point 4.1 corresponding side groovings 6 to excise After the original position large scale rock sample 7 to be measured deformation in plane x and y direction, σ_x、σ_yFor grooving The primary stress of 6, E is the elastic modelling quantity of original position large scale rock sample 7 to be measured, and μ is original position to be measured The Poisson's ratio of large scale rock sample 7.

The content that this specification is not described in detail belongs to existing known to professional and technical personnel in the field There is technology.

Claims (10)

1. a buried high energy storage rock mass stress release time lag characteristic measures system, it is characterised in that: It include measuring staff (12), the first displacement transducer (13), second displacement sensor (13.1), Triple motion sensor (13.2), the 4th displacement transducer (13.3), displacement meter anchor head (14), Gauge head (15), strain gauge (16), bolt stress meters (17), anchor pole (18), voice sending sensor Device (19), Acquisition Instrument (20) and computer (21)；

Wherein, original position large scale rock sample (7) to be measured vertically offers sound wave peephole (2), Deep displacement and stress trajectory hole (5), bolthole (9) and boring video recording boring (10), described Sound wave peephole (2) has four, and it is big that four sound wave peepholes (2) are arranged in original position to be measured Four corners of yardstick rock sample (7), described bolthole (9) has four, four boltholes (9) It is arranged on four angles of original position large scale rock sample (7) to be measured rectangular area, middle part (7.1), institute State deep displacement and stress trajectory hole (5) and boring video recording boring (10) is arranged in be measured former In the rectangular area, middle part (7.1) of position large scale rock sample (7), described deep displacement and stress are seen Gaging hole (5) is apart from the distance etc. of grooving (6) right hand edge of original position large scale rock sample (7) to be measured In boring video recording boring (10) apart from grooving (6) left side of original position large scale rock sample (7) to be measured The distance of edge, deep displacement and stress trajectory hole (5) are apart from original position large scale rock sample (7) to be measured Grooving (6) forward edge distance equal to boring video recording boring (10) big apart from original position to be measured The distance of grooving (6) posterior edges of yardstick rock sample (7)；

The middle part of the edge of described original position large scale rock sample (7) to be measured is respectively equipped with one One in-plane displancement observation point (4), original position large scale rock sample (7) right hand edge to be measured and back side edge First in-plane displancement observation point (4) of edge is provided with the 4th displacement transducer (13.3), to be measured Middle part outside grooving (6) right hand edge of large scale rock sample (7) is provided with the second in-plane displancement in situ Observation point (4.1), outside grooving (6) posterior edges of original position large scale rock sample (7) to be measured Middle part also be provided with the second in-plane displancement observation point (4.1), original position large scale rock sample (7) to be measured Periphery is provided with X axis datum point (11) and Y axis datum point (11.1), X axis datum point (11) Be respectively mounted the first displacement transducer (13), described grooving (6) on Y axis datum point (11.1) The of the second in-plane displancement observation point (4.1) outside right hand edge and X axis datum point (11) Connected by measuring staff (12) between one displacement transducer (13), outside grooving (6) posterior edges Second in-plane displancement observation point (4.1) of side and the first displacement of Y axis datum point (11.1) Being connected by measuring staff (12) between sensor (13), original position large scale rock sample (7) to be measured sets Three surface displacement measuring points (3), three surface displacement measuring points (3) are had to lay respectively at any three The outside of bolthole (9)；

The platform being arranged over being fixed by bearing (8) of described original position large scale rock sample (7) to be measured (1), described platform (1) is provided with three second displacement sensors (13.1), three seconds Displacement sensor (13.1) is respectively by measuring staff (12) with corresponding surface displacement measuring point (3) even Connect；

The aperture of described deep displacement and stress trajectory hole (5) is provided with gauge head (15), deep displacement And it is provided with triple motion sensor (13.2) in the gauge head (15) in stress trajectory hole (5) aperture, In described deep displacement and stress trajectory hole (5), grouting is provided with displacement meter anchor head (14), Displacement meter anchor head (14) connects triple motion sensor (13.2) by measuring staff (12)；

Described strain gauge (16) has multiple, and multiple strain gauges (16) are uniformly arranged on deep displacement And the different depth that stress trajectory hole (5) are internal, the anchor pole grout compartment (22) of four boltholes (9) In be all embedded with anchor pole (18), each anchor pole (18) is respectively mounted bolt stress meters (17)；

Acoustic emission sensor (19) is buried at the middle part of each deep displacement and stress trajectory hole (5) underground, The bottom of the anchor pole grout compartment (22) of each bolthole (9) buries acoustic emission sensor (19) underground；

Buried high energy storage rock mass stress release time lag characteristic measures system and also includes for four sound Ripple peephole (2) carries out the sonic test instrument (23) of acoustic detection；Buried high energy storage rock mass stress Release time lag characteristic measures system and also includes for boring video recording boring (10) is carried out original position to be measured The optical imaging instrument (24) of large scale rock sample crackle observation；

Described first displacement transducer (13), second displacement sensor (13.1), triple motion pass Sensor (13.2), the 4th displacement transducer (13.3), strain gauge (16), bolt stress meters (17), The signal of acoustic emission sensor (19), sonic test instrument (23) and optical imaging instrument (24) is defeated Go out end and all connected the signal input part of computer (21) by Acquisition Instrument (20).

Buried high energy storage rock mass stress the most according to claim 1 release time lag characteristic measures System, it is characterised in that: described original position large scale rock sample (7) to be measured is square rock sample, treats The side size range surveying large scale rock sample (7) in situ is 600～800mm, original position large scale rock to be measured The altitude range of sample (7) is 1200～1600mm.

Buried high energy storage rock mass stress the most according to claim 1 release time lag characteristic measures System, it is characterised in that: described grooving (6) is ring-type grooving, the length model of this ring-type grooving Enclosing is 700～900mm, and the width range of ring-type grooving is 56～75mm, the degree of depth of ring-type grooving Scope is 1200～1600mm.

Buried high energy storage rock mass stress the most according to claim 1 release time lag characteristic measures System, it is characterised in that: described sound wave peephole (2), deep displacement and stress trajectory hole (5), Boring video recording boring (10) hole depth equal, described sound wave peephole (2), deep displacement and should Power peephole (5), boring video recording boring (10) aperture equal.

Buried high energy storage rock mass stress the most according to claim 4 release time lag characteristic measures System, it is characterised in that: described sound wave peephole (2), deep displacement and stress trajectory hole (5), The hole depth of boring video recording boring (10) is 2m, described sound wave peephole (2), deep displacement And the aperture of stress trajectory hole (5), boring video recording boring (10) is 56mm.

Buried high energy storage rock mass stress the most according to claim 1 release time lag characteristic measures System, it is characterised in that: each sound wave peephole (2) distance phase away from grooving (6) corresponding sides Deng and distance range be 50～80mm；Described deep displacement and stress trajectory hole (5) distance are cut The distance range of groove (6) right hand edge is 250～280mm, described boring video recording boring (10) away from Distance range from grooving (6) left hand edge is 250～280mm；Described each bolthole (9) Distance away from grooving (6) corresponding sides is equal and distance range is 150～200mm.

Buried high energy storage rock mass stress the most according to claim 1 release time lag characteristic measures System, it is characterised in that: arranged by grouting in described deep displacement and stress trajectory hole (5) Three displacement meter anchor heads (14), three displacement meter anchor heads (14) are had to be separately positioned on deep displacement And the upper, middle and lower of stress trajectory hole (5).

8. the buried high energy storage rock mass stress release time lag characteristic that a kind utilizes described in claim 1 Mensuration system carries out Stress Release time lag characteristic method for measuring, it is characterised in that it includes as follows Step:

Step 1: use joint-cutting method to be carried out in original position large scale rock sample (7) to be measured left side and right side Cutting, forms the grooving (6) of original position large scale rock sample (7) left and right sides to be measured, and treats The primary stress surveying large scale rock sample (7) in situ is measured, it is thus achieved that initially putting down on country rock horizontal plane Face stress level；

Step 2: after position primary stress residing for original position large scale rock sample (7) to be measured has measured, Can carry out the cutting of other periphery, cutting work is carried out opposite side and is synchronized, substep cutting, point three steps Cutting completes, the depth of cut scope of three steps be respectively 600～800mm, 300～400mm, 300～400mm, cutting process utilize second displacement sensor (13.1) to surface often walking Displacement measuring points (3) carries out original position large scale rock sample (7) surface displacement to be measured observation；Utilize the 3rd Displacement transducer (13.2) carries out the big chi of original position to be measured to deep displacement and stress trajectory hole (5) Degree rock sample (7) deep displacement observation；Utilize sonic test instrument (23) to sound wave peephole (2) Carry out velocity of wave observation in original position large scale rock sample (7) to be measured cutting unloading process；Utilize strain gauge (16) deep displacement and stress trajectory hole (5) are carried out original position large scale rock sample (7) to be measured to cut Deep stress trajectory during cutting；Utilize strain gauge (16) to deep displacement and stress trajectory hole (5) Carry out anchor stress change observation in original position large scale rock sample (7) cutting process to be measured；Utilize light Learn imager (24) and boring video recording boring (10) is carried out original position large scale rock sample (7) to be measured Rock sample crackle observation in cutting process；Acoustic emission sensor (19) is to deep displacement and stress trajectory The acoustic emission that hole (5) carries out rock masses fracturing in original position large scale rock sample (7) cutting process to be measured is empty Between location and injury tolerance observe.

Stress Release time lag characteristic method for measuring the most according to claim 8, its feature It is: after described step 2 the most in steps 3: Acquisition Instrument (20) is collected by computer (21) Country rock horizontal plane on initial plane stress level data, original position large scale rock sample (7) to be measured Surface displacement observation data, original position large scale rock sample (7) deep displacement to be measured observation, to be measured former Velocity of wave observation data, original position large scale rock to be measured in position large scale rock sample (7) cutting unloading process Sample (7) cutting process medium and deep stress trajectory data, original position large scale rock sample (7) to be measured cutting During anchor stress change observation data, original position large scale rock sample (7) cutting process to be measured in Rock masses fracturing in rock sample crackle observation data, original position large scale rock sample (7) cutting process to be measured Acoustic emission space orientation and injury tolerance observation data, set up various data respectively and close over time It is curve, it is achieved buried high energy storage rock mass stress release time lag characteristic measures.

Stress Release time lag characteristic method for measuring the most according to claim 8, its feature It is: in described step 1, uses joint-cutting method to carry out at the beginning of original position large scale rock sample (7) to be measured Beginning stress measurement, it is thus achieved that the initial plane stress level on country rock horizontal plane method particularly includes: cut Stitch carries out during the primary stress measurement of original position large scale rock sample (7) to be measured first big to original position to be measured Left side and the right side of yardstick rock sample (7) are cut, and i.e. form original position large scale rock sample (7) to be measured The grooving (6) of the left and right sides, by X axis datum point (11) and Y axis datum point (11.1) On the first displacement transducer (13) observe the displacement of the second in-plane displancement observation point (4.1) Change is observed, and is calculated by formula (1), formula (2), it is thus achieved that on country rock horizontal plane Initial plane stress level；

$\left.\begin{array}{c}{\mathrm{\σ}}_x=\frac{2W_x\mathrm{\ρ}E}{L\[\left(3+\mathrm{\μ}\right)-\frac{2(1+\mathrm{\μ})}{{\mathrm{\ρ}}^2+1}\]}\\ \mathrm{\ρ}=\frac{2x}{L}+\sqrt{\frac{4x^2+L^2}{L^2}}\end{array}\right\}---\left(1\right)$

$\left.\begin{array}{c}{\mathrm{\σ}}_y=\frac{2W_y\mathrm{\ρ}E}{L\[\left(3+\mathrm{\μ}\right)-\frac{2(1+\mathrm{\μ})}{{\mathrm{\ρ}}^2+1}\]}\\ \mathrm{\ρ}=\frac{2y}{L}+\sqrt{\frac{4y^2+L^2}{L^2}}\end{array}\right\}---\left(2\right)$

Wherein: L is the length of original position large scale rock sample (7) both sides grooving (6) to be measured；X is The second in-plane displancement observation point (4.1) outside grooving (6) right hand edge is away from this grooving (6) Distance between center line, y is the second in-plane displancement observation point (4.1) outside grooving (6) posterior edges Away from this grooving (6) distance between center line, W_x、W_yIt is respectively two the second in-plane displancement observation marks Original position large scale rock sample (7) to be measured after point (4.1) corresponding side grooving (6) excision is in plane x With the deformation on y direction, σ_x、σ_yFor the primary stress of grooving (6), E is that original position to be measured is big The elastic modelling quantity of yardstick rock sample (7), μ is the Poisson's ratio of original position large scale rock sample (7) to be measured.