CN107765339B - Improving stability of surrounding rocks in roadway joint test method - Google Patents

Abstract

The invention discloses a kind of improving stability of surrounding rocks in roadway joint test test method, the test device that this method uses includes the geologic radar detection instrument for controlling host, the inspection instrument for borehole for drilling through the wall-rock crack development degree of drill hole inner wall and being tested being helped to the top plate of coal mine down-hole tunnel or tunnel, drilling side country rock is carried out the relaxation zone tester of relaxation zone test and tested the adjoining rock stability situation that the top plate of coal mine down-hole tunnel or tunnel are helped；The test method is comprising steps of one, drilling；Two, surrounding rock stability joint test: single hole test and tunnel entirety geologic radar detection；Three, comprehensive analysis and judgement；Four, next tunnel segment surrounding rock stability joint test；Five, step 4 is repeated several times, completes the surrounding rock stability joint test process of coal mine down-hole tunnel.The present invention has rational design and realizes that easy, test result is accurate, can solve existing for existing single monitoring means that precision is lower, is difficult to the problem of accurately being tested improving stability of surrounding rocks in roadway.

Description

Improving stability of surrounding rocks in roadway joint test method

Present patent application is May 31 2015 applying date, application number 201510292207.5, invention and created name For the divisional application of the application for a patent for invention of " improving stability of surrounding rocks in roadway joint test device and test method ".

Technical field

The invention belongs to ground and mining engineering technical fields, more particularly, to a kind of improving stability of surrounding rocks in roadway joint test Method.

Background technique

For ensure coal mine down-hole tunnel stablize, before carrying out roadway support design can apply Detection Techniques to roadway surrounding rock into Row test is assessed roadway surrounding rock by the analysis and summary to detection result and is stablized, foundation provided for roadway support design, to not Surrounding rock stability with degree carries out roadway support design.Nowadays, more to mine wall rock's level technological means, such as sound hair It penetrates, optical fiber, resistance stress meter etc., but all concentrates on a certain technological means, due to the diversity and complexity of coal rock layer preservation, The enlargement of bulk and at the scene monitoring in by extraneous factor interfere it is more, there is distortion phenomenon in many monitoring results, It can be seen that single monitoring means carries out rock body quality of mine monitoring within the scope of specific Space Time-ground, it is difficult to realize foot to engineering practice Enough effective guidances.Existing single monitoring means is primarily present following several respects problem: the first, one borehole hole wall crack Development degree can not reflect that the whole looks of wall-rock crack, precision are lower；The second, the roadway surrounding rock centered on one borehole is split Gap develops range test, can not detect the other structures such as complex condition water aquifer, goaf, detection accuracy is lower；Third, spy Position and the range of water aquifer, goaf and other structures (such as reinforcing bar) are surveyed, foundation can not be provided to the supporting in local tunnel, Monitoring accuracy is lower；4th, in original Drift stability measuring technology, development degree, the loose range of wall-rock crack are big The technologies such as small, structure variation are used alone, and accuracy is lower；5th, as the more ore body of the increase of mining depth is opened It adopts and enters deep, the nature occurrence condition such as wall-rock crack and loose range becomes increasingly complex, and single Detection Techniques can not be to enclosing Rock stability carries out perfect assessment, and precision is lower.

Summary of the invention

In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is that providing a kind of roadway surrounding rock Stability joint test device, simple structure and reasonable design and it is easy to use, test result is accurate, can solve existing Precision existing for single monitoring means is lower, is difficult to the problem of accurately being tested improving stability of surrounding rocks in roadway.

In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of improving stability of surrounding rocks in roadway joint test Device, it is characterised in that: including the country rock for controlling host, helping the drill hole inner wall drilled through to coal mine down-hole tunnel top plate or tunnel Inspection instrument for borehole that cranny development degree is tested, the relaxation zone tester that relaxation zone test is carried out to drilling side country rock and To the geologic radar detection instrument that the adjoining rock stability situation that coal mine down-hole tunnel top plate or tunnel are helped is tested, the drilling is pried through Instrument, relaxation zone tester and geologic radar detection instrument connect with control host.

Above-mentioned improving stability of surrounding rocks in roadway joint test device, it is characterized in that: the inspection instrument for borehole, relaxation zone tester and It is attached by cable between geologic radar detection instrument and control host.

Above-mentioned improving stability of surrounding rocks in roadway joint test device, it is characterized in that: further include translating trolleys and be mounted on translation it is small On vehicle and length-adjustable telescopic arm, the inspection instrument for borehole and relaxation zone tester are installed on telescopic arm；The translation Trolley includes horizontal frame and the multiple traveling wheels for being mounted on the horizontal frame bottom, the geologic radar detection instrument and control Host is installed in the horizontal frame, and the geologic radar detection instrument is mounted on the back side top of the horizontal frame.

Above-mentioned improving stability of surrounding rocks in roadway joint test device, it is characterized in that: further including one is mounted on the horizontal frame The translation track of front side and the slip base that can be moved forward and backward along translation track, the slip base is mounted on translation track, described Telescopic arm bottom is mounted on slip base；The translation track is laid along the transverse width direction of the horizontal frame and its is transversal Face is undercut shape, and the translation track is located at institute positioned at the horizontal rail on the horizontal frame top and two by one The vertical track for stating lower section at left and right sides of horizontal rail is formed by connecting, and the horizontal rail and two vertical tracks are laid On same vertical plane.

Above-mentioned improving stability of surrounding rocks in roadway joint test device, it is characterized in that: between the telescopic arm bottom and slip base with Articulated manner is attached, equipped with the hinged seat installed for telescopic arm bottom on the slip base；It is equipped on the slip base To the adjustment structure that the angle between telescopic arm and slip base is adjusted, the adjustment structure is hydraulic cylinder, the hydraulic cylinder Cylinder base be mounted on slip base in hinged way and its piston rod top end is mounted on telescopic arm in hinged way；It is described Telescopic arm includes the extension sleeve of telescopic rod and multiple coaxial packages from the inside to the outside on telescopic rod, the inspection instrument for borehole and pine Moving-coil tester is installed on telescopic rod.

Meanwhile that the invention also discloses a kind of method and steps is simple, realize convenient and good test effect, can be to roadway surrounding rock The improving stability of surrounding rocks in roadway joint test method that stability is accurately tested, it is characterised in that: along tunnel longitudinal extension, Multiple tunnel segments are divided to carry out surrounding rock stability joint test to coal mine down-hole tunnel from the front to the back, multiple tunnel segments Surrounding rock stability joint test method is all the same；When carrying out surrounding rock stability joint test for any one tunnel segment, including Following steps:

Step 1: drilling: drilling through multiple groups drilling in tested tunnel segment by drilling machine, drilling described in multiple groups is by backward Preceding laying；Drilling described in every group includes three drillings, and three drillings are respectively one and are laid in coal mine down-hole tunnel top The drilling that drilling and two left and right sides tunnels for being laid in coal mine down-hole tunnel respectively on plate are helped；

Step 2: surrounding rock stability joint test, process are as follows:

Step 201, single hole test: it drills described in the multiple groups drilled through in step 1 and tests respectively, bored described in multiple groups The test method of all drillings is all the same in hole；When testing any one drilling, comprising the following steps:

Step 2011, drilling are pried through: being obtained the image information of tested drill hole inner wall by inspection instrument for borehole, and be will acquire Image information be uploaded to control host synchronize display and record；According to the image information that control host is shown, to tested The wall-rock crack development degree of test boring inner wall is judged；

Step 2012, wall rock loosening test: relaxation zone test is carried out to tested test boring using relaxation zone tester, and will Relaxation zone test result is uploaded to control host and synchronizes display and record；The relaxation zone test knot shown according to control host Fruit judges the loosening area of surrounding rocks of tested test boring side country rock, completes the single hole test process of tested test boring, and The single hole test result of the drilling is recorded；

The single hole test result of the tested test boring includes the inner wall wall-rock crack development degree and all side walls of the drilling The loosening area of surrounding rocks of rock；

Step 2011 is repeated several times to step 2012, until completing all drillings on tested tunnel segment in step 2013 Single hole test process, and obtain the single hole test result of all drillings；

Step 202, tunnel entirety geologic radar detection: geologic radar detection instrument is used, from the front to the back to tested tunnel The top plate and bottom plate of segment and left and right sides tunnel side carry out full section scanning respectively, and scanning result is uploaded to control host Synchronize display and record；According to the scanning result that control host is shown, top plate and bottom plate and a left side to tested tunnel segment The adjoining rock stability situation of right two sides tunnel side is judged, and helps top plate and bottom plate and left and right sides tunnel with the presence or absence of sky The position and structure in hole and existing cavity are determined, and complete the geologic radar detection process of tested tunnel segment, and The geologic radar detection result of tested tunnel segment is recorded；

The geologic radar detection result of the tested tunnel segment includes top plate and bottom plate and the left and right two of the tunnel segment The adjoining rock stability situation of side tunnel side, with the presence or absence of the position and structure in cavity and existing cavity；

Step 3: comprehensive analysis and judgement: testing knot in conjunction with the single hole for being tested all drillings in the segment of tunnel in step 201 The geologic radar detection of tested tunnel segment is obtained in fruit and step 202 as a result, adjoining rock stability to tested tunnel segment Property be determined, complete the surrounding rock stability joint test process of tested tunnel segment；

Step 4: carrying out surrounding rock stability to next tunnel segment according to method described in step 1 to step 3 Joint test；

Step 5: step 4 is repeated several times, until completing the surrounding rock stability joint test process of coal mine down-hole tunnel.

The above method, it is characterized in that: carry out drilling in step 2011 when prying through, first by inspection instrument for borehole from tested test boring Aperture be moved to bottom hole, then inspection instrument for borehole is moved to aperture from the bottom hole of tested test boring；The inspection instrument for borehole moves During dynamic, the synchronous image information for obtaining tested drill hole inner wall position；To the wall-rock crack of tested drill hole inner wall When development degree is judged, according to the image information of tested drill hole inner wall position, to tested drill hole inner wall everybody Set the rock crusher situation at place and with the presence or absence of the quantity in crack and existing crack, position, width, extending direction and length Judged.

The above method, it is characterized in that: when carrying out single hole test in step 201, according to the installation position of drilling, from the front to the back It drills described in multiple groups and carries out single hole test respectively；Single hole test is completed in three drillings to drilling described in upper one group Afterwards, then the drilling described in next group carries out single hole test；The single hole test result group of three drilling in drilling described in every group At the surrounding rock stability subregion test result at group drilling present position；Institute on tested tunnel segment is completed in step 201 After thering is the single hole of drilling to test, obtains the surrounding rock stability subregion on tested tunnel segment at multiple and different positions and test knot Fruit；

The geologic radar detection result of tested tunnel segment described in step 202 is that the country rock of tested tunnel segment is steady Qualitative integrated testability result；

When carrying out comprehensive analysis and judgement in step 3, the country rock according to the tested tunnel segment obtained in step 202 is steady Qualitative integrated testability is as a result, and combine the country rock on the tested tunnel segment obtained in step 201 at multiple and different positions steady Qualitative subregion test result is determined the surrounding rock stability of tested tunnel segment.

The above method, it is characterized in that: the inspection instrument for borehole and relaxation zone tester are installed in length-adjustable stretch On arm, the telescopic arm is mounted on translating trolleys；The translating trolleys include horizontal frame and are mounted on the horizontal frame Multiple traveling wheels of bottom, the geologic radar detection instrument and control host are installed in the horizontal frame, the geology Radar detector is mounted on the back side top of the horizontal frame；

The horizontal frame installed in front has a translation track, and one is equipped on the translation track can be along translation rail The slip base that road is moved forward and backward, the telescopic arm bottom is mounted on slip base；The translation track is along the horizontal frame Transverse width direction is laid and its cross section is undercut shape, and the translation track is located at the horizontal frame top by one Horizontal rail and two vertical tracks for being located at lower section at left and right sides of the horizontal rail are formed by connecting, the horizontal rail It is laid on same vertical plane with two vertical tracks；Between the telescopic arm bottom and slip base in hinged way into Row connects, equipped with the hinged seat installed for telescopic arm bottom on the slip base；Be equipped on the slip base to telescopic arm with The adjustment structure that angle between slip base is adjusted, the adjustment structure are hydraulic cylinder, the cylinder base of the hydraulic cylinder It is mounted on slip base in hinged way and its piston rod top end is mounted on telescopic arm in hinged way；The telescopic arm includes The extension sleeve of telescopic rod and multiple coaxial packages from the inside to the outside on telescopic rod, the inspection instrument for borehole and relaxation zone tester It is installed on telescopic rod；

Three drillings in step 1 in drilling described in every group are laid on same vertical plane and three is respectively positioned on On the cross section of coal mine down-hole tunnel；

When carrying out surrounding rock stability joint test in step 2, translating trolleys edge is pushed to be tested tunnel segment from the front to the back It is mobile, the translating trolleys be moved to one group described in drilling installation position when, by slip base mobile on translation track to stretching The position of contracting arm is adjusted, and carries out single hole test respectively the drilling of three in the group drilling；To any one When drilling carries out single hole test, first telescopic arm is moved on the outside of the aperture of the drilling, recycles telescopic arm by inspection instrument for borehole Bottom hole is moved to from the aperture of tested test boring with relaxation zone tester, then by inspection instrument for borehole and relaxation zone tester from tested The bottom hole of test boring is moved to aperture, just completes the single hole test process of a drilling；Also, the translating trolleys are tested In the segment of tunnel from the front to the back in moving process, by geologic radar detection instrument from the front to the back to the top of tested tunnel segment Plate, bottom plate and left and right sides tunnel side are scanned.

The above method, it is characterized in that: the length of the tunnel segment is 40m~100m；The depth of drilling described in step 1 Degree is not more than 15m, and the spacing between drilling described in the two adjacent groups of front and back is 2m~8m.

Compared with the prior art, the present invention has the following advantages:

1, used improving stability of surrounding rocks in roadway joint test apparatus structure is simple, design is reasonable and processing and fabricating is easy, Input cost is lower, mainly by control host, the country rock of the drill hole inner wall drilled through is helped to coal mine down-hole tunnel top plate or tunnel Inspection instrument for borehole that cranny development degree is tested, the relaxation zone tester that relaxation zone test is carried out to drilling side country rock and The geologic radar detection instrument composition that the adjoining rock stability situation that coal mine down-hole tunnel top plate or tunnel are helped is tested.

2, used improving stability of surrounding rocks in roadway joint test device is easy to use, and it is convenient to realize, is easy to grasp.It is real When border carries out surrounding rock stability joint test, translating trolleys are pushed to move from the front to the back along tunnel segment is tested, translating trolleys When being moved to one group of drilling installation position, the position of telescopic arm is adjusted by slip base mobile on translation track, and Single hole test is carried out respectively to three drillings in group drilling；When carrying out single hole test to any one drilling, first by telescopic arm It is moved on the outside of the aperture of the drilling, recycles telescopic arm by inspection instrument for borehole and relaxation zone tester from the hole of tested test boring Mouth is moved to bottom hole, then inspection instrument for borehole and relaxation zone tester are moved to aperture from the bottom hole of tested test boring, just completes The single hole test process of one drilling；Also, translating trolleys from the front to the back in moving process, pass through in tested tunnel segment The top plate and bottom plate to tested tunnel segment and left and right sides tunnel side are scanned geologic radar detection instrument from the front to the back.

3, used translating trolleys structure is simply and movement is easy, easy can be moved forward and backward in tunnel, realization simplicity, The purpose of long range test is quickly carried out to the surrounding rock stability of coal mine down-hole tunnel.

4, actual installation is easy, is provided with translation track and slip base on translating trolleys, and telescopic arm is mounted on slip base, It is adjusted, is realized to three in the same group of drilling demands tested respectively that drill by position of the slip base to telescopic arm； Meanwhile inspection instrument for borehole and relaxation zone tester are installed on telescopic arm, by telescopic arm automatically by inspection instrument for borehole and pine Moving-coil tester is sent to drilling, and can carry out easy, quickly adjusting to depth is sent into, and it is convenient and easy to operate to realize, uses Effect is good, can significantly simplify the single hole test process of drilling.

5, used improving stability of surrounding rocks in roadway joint test device using effect is good and practical value is high, surrounding rock stability Measuring accuracy is high, can carry out quickly, accurately testing to improving stability of surrounding rocks in roadway, popularization and application foreground is extensive.

6, used improving stability of surrounding rocks in roadway joint test method is simple, design is reasonable and it is convenient to realize, is able to achieve lane Road country rock, again to comprehensive detection of structure, specifically discloses the development journey in roadway surrounding rock borehole wall crack from point to face first Degree；Followed by development range of the detection roadway surrounding rock crack centered on drilling；Finally detect roadway surrounding rock structure hollow hole etc. Tunnel drilling, relaxation zone radius and full face a wide range of, long range seamless integration detection are realized in the position of other structures.Root Improving stability of surrounding rocks in roadway is evaluated according to comprehensive detection result, provides foundation for roadway support etc..

7, using effect is good and measuring accuracy is high, carries out drilling to pry through for one borehole not reflecting wall-rock crack comprehensively It is the case where development degree, closely related with medium character according to acoustic velocity based on acoustic wave of rock Detection Techniques, it receives The velocity of wave of sound wave is smaller to show that enclosing lithologies are poorer, and intensity is smaller, the smaller principle of elasticity modulus, sends out with relaxation zone tester Raw sound wave is that roadway surrounding rock cranny development and aeration level within the scope of the certain radius of center detects to each drilling, is made up The infull defect of one borehole information is pried through using drilling.In addition, for drilling pry through with relaxation zone tester can not it is a wide range of, Frequency electromagnetic waves, are sent by the shortcomings that over long distances and realizing drift section seamless detection using geologic radar detection instrument transmitting antenna Region to be measured is not connected due to different media with different physical characteristics, also with different dielectric constants in dielectric constant Electromagnetic wave amplitude changes on continuous interface；From the waveform of georadar image, frequency, amplitude, phase and electromagnetism wave energy The changing rule of the features such as amount absorbing state sets out, and establishes the corresponding relationship of typical geology phenomenon Yu radar signature image It is made explanations according to geological state of the variation of figure to underground；Underworkings tunneling boring is carried out by geologic radar detection instrument Scanning probe, including top plate and bottom plate and two sides tunnel are helped, the final full face long range of roadway surrounding rock, a wide range of, seamless realized Detection.Thus, position and wall rock loosening and degree of crushing using the comprehensive apparent search coverage cavity of energy of the invention are underground lane Road supporting provides sufficient, accurate information, have it is following a little: the first, from roadway surrounding rock surface to internal crack and structure into The comprehensive test analysis of row discloses stability of the roadway surrounding rock under initial fissure and artifical influence factor effect completely；The second, more Kind means of testing carries out selective, targetedly integrated use to overall structure again from point to face；Third can effectively make up and make The infull defect of one borehole information is pried through with drilling；4th, it is able to achieve that tunnel is a wide range of, full face over long distances seamless spy It surveys, thus data supporting abundant and foundation can be provided for the adjustment of roadway support parameter and stability assessment, for ensureing coal mine The safety of underground operators is of great significance with normal production.

Below by drawings and examples, technical scheme of the present invention will be described in further detail.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of improving stability of surrounding rocks in roadway joint test device of the present invention.

Fig. 2 is the schematic block circuit diagram of improving stability of surrounding rocks in roadway joint test device of the present invention.

Fig. 3 is the use state of improving stability of surrounding rocks in roadway joint test device of the present invention with reference to figure.

Fig. 4 is the flow diagram of improving stability of surrounding rocks in roadway joint test method of the present invention.

Fig. 5-1 is the present invention using the image at the tested drilling orifice of inspection instrument for borehole acquisition.

Fig. 5-2 is the image in the tested test boring of inspection instrument for borehole of the present invention acquisition at depth 1m.

Fig. 5-3 is the image in the tested test boring of inspection instrument for borehole of the present invention acquisition at depth 2m.

Fig. 5-4 is the image in the tested test boring of inspection instrument for borehole of the present invention acquisition at depth 3m.

Fig. 5-5 is the image in the tested test boring of inspection instrument for borehole of the present invention acquisition at depth 4m.

Fig. 5-6 is the image in the tested test boring of inspection instrument for borehole of the present invention acquisition at depth 5m.

Fig. 5-7 is the image in the tested test boring of inspection instrument for borehole of the present invention acquisition at depth 6m.

Fig. 5-8 is the image in the tested test boring of inspection instrument for borehole of the present invention acquisition at depth 7m.

Fig. 5-9 is the image in the tested test boring of inspection instrument for borehole of the present invention acquisition at depth 8m.

Fig. 5-10 is the image at the tested drilling hole bottom that the present invention is obtained using inspection instrument for borehole.

Fig. 6 is that relaxation zone tester of the present invention tests the relaxation zone test result schematic diagram obtained.

Fig. 7 is the geological radar scan image that tunnel segment is tested acquired in geologic radar detection instrument of the present invention.

Fig. 8 is the geological radar time cross-section that tunnel segment is tested acquired in geologic radar detection instrument of the present invention.

Description of symbols:

1-coal mine down-hole tunnel；2-drillings；3-inspection instrument for borehole；

4-relaxation zone testers；4-1-support；5-geologic radar detection instrument；

6-control hosts；7-translating trolleys；8-telescopic arms；

8-1-telescopic rod；8-2-extension sleeve；9-translation tracks；

10-slip bases；11-hinged seats；12-hydraulic cylinders；

13-fastening bolts；14-cavities；15-vertical supports；

16-bolt mounting holes.

Specific embodiment

A kind of improving stability of surrounding rocks in roadway joint test device as shown in Figure 1, Figure 2 and Figure 3, including control host 6, to coal The drilling that the wall-rock crack development degree that 2 inner wall of drilling drilled through is helped in 1 top plate of mine underworkings or tunnel is tested is pried through Instrument 3 carries out the relaxation zone tester 4 of relaxation zone test to 2 side country rocks of drilling and helps to 1 top plate of coal mine down-hole tunnel or tunnel The geologic radar detection instrument 5 tested of adjoining rock stability situation, the inspection instrument for borehole 3, relaxation zone tester 4 and geology thunder Connect up to survey meter 5 with control host 6.

In the present embodiment, the inspection instrument for borehole 3, relaxation zone tester 4 and geologic radar detection instrument 5 and control host 6 Between be attached by cable.

In actual use, the inspection instrument for borehole 3, relaxation zone tester 4 and geologic radar detection instrument 5 and control host 6 Between can also use communication.

In the present embodiment, improving stability of surrounding rocks in roadway joint test device of the present invention further includes translating trolleys 7 and peace On translating trolleys 7 and length-adjustable telescopic arm 8, the inspection instrument for borehole 3 and relaxation zone tester 4 are installed in flexible On arm 8.The translating trolleys 7 include horizontal frame and the multiple traveling wheels for being mounted on the horizontal frame bottom, the geology Radar detector 5 and control host 6 are installed in the horizontal frame, and the geologic radar detection instrument 5 is mounted on the water The back side top of flatcar frame.

Also, the vertical supports 15 installed for geologic radar detection instrument 5 are provided in the horizontal frame.

In the present embodiment, the horizontal frame is fashioned iron frame body, and the vertical supports 15 are shape steel bracket.

Meanwhile improving stability of surrounding rocks in roadway joint test device of the present invention, further include one and is mounted on the level Translation track 9 on front side of vehicle frame and the slip base 10 that can be moved forward and backward along translation track 9, the slip base 10 be mounted on translation rail On road 9,8 bottom of telescopic arm is mounted on slip base 10.The translation track 9 is along the transverse width side of the horizontal frame To laying and its cross section is undercut shape, and the translation track 9 is located at the horizontal rail on the horizontal frame top by one The vertical track for being located at lower section at left and right sides of the horizontal rail with two is formed by connecting, the horizontal rail and two institutes Vertical track is stated to be laid on same vertical plane.

In the present embodiment, the translation track 9 is steel track and its cross section is rectangle, and 10 bottom of slip base is opened There is the groove slid back and forth along translation track 9.Also, it is locked between the slip base 10 and translation track 9 by fastener It fastens.Two vertical tracks are separately mounted to the left and right sides of the horizontal frame.

In the present embodiment, it is attached in hinged way between 8 bottom of telescopic arm and slip base 10, the slip base Equipped with the hinged seat 11 installed for 8 bottom of telescopic arm on 10.Be equipped on the slip base 10 to telescopic arm 8 and slip base 10 it Between the adjustment structure that is adjusted of angle, the adjustment structure is hydraulic cylinder 12, and the cylinder base of the hydraulic cylinder 12 is to cut with scissors The mode of connecing is mounted on slip base 10 and its piston rod top end is mounted in hinged way on telescopic arm 8.

In the present embodiment, the telescopic arm 8 includes telescopic rod 8-1 and multiple coaxial packages from the inside to the outside in telescopic rod 8-1 On extension sleeve 8-2, the inspection instrument for borehole 3 and relaxation zone tester 4 are installed on telescopic rod 8-1.

In actual use, the telescopic arm 8 can also use other types of adjustable rod.

In the present embodiment, the inspection instrument for borehole 3 is that the optical borehole that can be rotated 360 ° inside drilling 2 is pried through Instrument.

When actual installation, the inspection instrument for borehole 3 is mounted on the top telescopic rod 8-1, and 4 bottom of relaxation zone tester is set It is equipped with support 4-1, is attached between the support 4-1 and telescopic rod 8-1 by fastening bolt 13, on the telescopic rod 8-1 It is provided with multiple bolt mounting holes 16 installed for fastening bolt 13.

In actual use, extension sleeve 8-2 on the outermost side is outer barrel, institute in multiple extension sleeve 8-2 The piston rod top end for stating hydraulic cylinder 12 is mounted in hinged way on the outer barrel.

A kind of improving stability of surrounding rocks in roadway joint test method as shown in Figure 4, along tunnel longitudinal extension, from the front to the back Multiple tunnel segments are divided to carry out surrounding rock stability joint test to coal mine down-hole tunnel 1, the country rock of multiple tunnel segments is steady Qualitative joint test method is all the same；When carrying out surrounding rock stability joint test for any one tunnel segment, including following step It is rapid:

Step 1: drilling: drilling through multiple groups drilling 2 in tested tunnel segment by drilling machine, drilling 2 described in multiple groups is by rear It lays forward；Drilling 2 described in every group includes three drillings 2, and three drillings 2 are respectively one and are laid in underground coal mine lane The drilling 2 that drilling 2 and two left and right sides tunnels for being laid in coal mine down-hole tunnel 1 respectively on 1 top plate of road are helped；

Step 2: surrounding rock stability joint test, process are as follows:

Step 201, single hole test: the drilling 2 described in the multiple groups drilled through in step 1 is tested respectively, is bored described in multiple groups The test method of all drillings 2 is all the same in hole 2；When testing any one drilling 2, comprising the following steps:

Step 2011, drilling are pried through: being obtained the image information of tested 2 inner wall of test boring by inspection instrument for borehole 3, and will be obtained The image information taken is uploaded to control host 6 and synchronizes display and record；It is right according to the image information that control host 6 is shown The wall-rock crack development degree of tested 2 inner wall of test boring is judged；

Step 2012, wall rock loosening test: carrying out relaxation zone test to tested test boring 2 using relaxation zone tester 4, and Relaxation zone test result is uploaded to control host 6 and synchronizes display and record；It is surveyed according to the relaxation zone that control host 6 is shown Test result judges the loosening area of surrounding rocks of tested 2 side country rock of test boring, completes the single hole test of tested test boring 2 Process, and the single hole test result of the drilling 2 is recorded；

The single hole test result of the tested test boring 2 includes inner wall wall-rock crack development degree and the side of the drilling 2 The loosening area of surrounding rocks (i.e. relaxation zone radius) of country rock；

Step 2011 is repeated several times to step 2012, until completing all drillings 2 on tested tunnel segment in step 2013 Single hole test process, and obtain it is all drilling 2 single hole test result；

Step 202, tunnel entirety geologic radar detection: geologic radar detection instrument 5 is used, from the front to the back to tested tunnel The top plate and bottom plate of segment and left and right sides tunnel side carry out full section scanning respectively, and scanning result is uploaded to control host 6 Synchronize display and record；According to the scanning result that control host 6 is shown, to the top plate and bottom plate of tested tunnel segment and The adjoining rock stability situation of left and right sides tunnel side is judged, and top plate and bottom plate and left and right sides tunnel are helped and be whether there is Cavity 14 and existing empty 14 position and structure are determined, and complete the geologic radar detection mistake of tested tunnel segment Journey, and the geologic radar detection result of tested tunnel segment is recorded；

The geologic radar detection result of the tested tunnel segment includes top plate and bottom plate and the left and right two of the tunnel segment The adjoining rock stability situation of side tunnel side, with the presence or absence of cavity 14 and existing empty 14 position and structure；

Step 3: comprehensive analysis and judgement: in conjunction with the single hole test for being tested all drillings 2 in the segment of tunnel in step 201 As a result with tested tunnel segment is obtained in step 202 geologic radar detection as a result, steady to the country rock of tested tunnel segment It is qualitative to be determined, complete the surrounding rock stability joint test process of tested tunnel segment；

Step 4: carrying out surrounding rock stability to next tunnel segment according to method described in step 1 to step 3 Joint test；

Step 5: step 4 is repeated several times, until completing the surrounding rock stability joint test process of coal mine down-hole tunnel 1.

In actual use, by relaxation zone tester 4 to tested test boring 2 carry out relaxation zone test, can understand obtain by The wall rock loosening interface of 2 side country rock of testing bore holes and its degree of loosening.

In the present embodiment, in the coal and rock that the drilling 2 is laid in the top plate of coal mine down-hole tunnel 1 or tunnel is helped.

Drilling is carried out in the present embodiment, in step 2011 when prying through, first by inspection instrument for borehole 3 from the hole of tested test boring 2 Mouth is moved to bottom hole, then inspection instrument for borehole 3 is moved to aperture from the bottom hole of tested test boring 2；The inspection instrument for borehole 3 is mobile In the process, the synchronous image information for obtaining tested 2 inner wall position of test boring；To the wall-rock crack of tested 2 inner wall of test boring It is each to tested 2 inner wall of test boring according to the image information of tested 2 inner wall position of test boring when development degree is judged Rock crusher situation at position and with the presence or absence of the quantity in crack and existing crack, position, width, extending direction and length Degree is judged.

According to the image information of tested 2 inner wall position of test boring, can judge the inner wall of drilling 2 whether have damage and Collapsing phenomenon, while related coal and rock force-bearing situation analysis is carried out to crack existing on the inner wall (i.e. hole wall) of drilling 2.

In actual mechanical process, inspection instrument for borehole 3 is moved to bottom hole from the aperture of tested test boring 2 and is moved from bottom hole Image information during to aperture compares, and can carry out to crack existing on the inner wall (i.e. hole wall) of drilling 2 related Coal and rock force-bearing situation analysis: if stress suffered by hole wall is larger, by stress destruction with regard to serious, accordingly will appear collapsing Phenomena such as, it can clearly show the extent of the destruction of coal and rock at drilling 2.

It, should in conjunction with Fig. 5-1, Fig. 5-2, Fig. 5-3, Fig. 5-4, Fig. 5-5, Fig. 5-6, Fig. 5-7, Fig. 5-8, Fig. 5-9 and Fig. 5-10 10 width figures are the image for obtaining inspection instrument for borehole 3 into bottom hole moving process from the aperture of tested test boring 2, according to above-mentioned 10 Width figure and the image information for obtaining inspection instrument for borehole 3 into aperture moving process from the bottom hole of tested test boring 2, to tested The image information of 2 inner wall positions of drilling is analyzed, and obtains the image information analysis result of inspection instrument for borehole 3.

Wherein, by inspection instrument for borehole 3 from the aperture of tested test boring 2 into bottom hole moving process, the survey of inspection instrument for borehole 3 Test result is as follows: for hole depth between 0m~1m, there is crack in aperture, and crack is longitudinally developed；Hole depth is a plurality of between 1m~2m Longitudinal cranny development extends；Hole depth is between 2m~3m, and more longitudinal direction cracks, two are extended down at 3m；Hole depth be 3m~4m it Between, a crack continues and extend at 4m；For hole depth between 4m~5m, crack extends to 4.5m or so, is crushed, chip off-falling, bores Dipped ring is whole；Hole depth is crushed out-of-flatness between 5m~6m；Hole depth is between 6m~7m, drill mouth out-of-flatness；Hole depth is Between 7m~8m, bottom is complete.

By inspection instrument for borehole 3 from the bottom hole of tested test boring 2 into aperture moving process, the test knot of inspection instrument for borehole 3 Fruit is as follows: for hole depth between 8m~7m, inner wall is smooth；Hole depth is between 7m~6m, inner wall out-of-flatness；Hole depth be 6m~ Between 5m, it is crushed, very out-of-flatness, chip off-falling；Hole depth is very broken between 5m~4m, out-of-flatness, and inner wall is concave-convex obvious, It is jagged；Between 4m~3m, a big crack extends hole depth；Between 3m~2m, a plurality of crack exists hole depth；Hole Depth is between 2m~1m, a plurality of crack, there is an annular fissure；For hole depth between 1m~0m, inner wall is very uneven.

According to the image information of the 2 inner wall position of tested test boring of above-mentioned acquisition, obtains and seen by inspection instrument for borehole 3 The wall-rock crack development degree of 2 inner wall of tested test boring measured: hole depth is between 0m~1.0m, cranny development；Hole depth Between 1.0m~2.5m, longitudinal crack is grown thickly, and a crack continues and extend at 4.5m；Hole depth be 5.0m~6.0m it Between, drill hole inner wall is broken, very out-of-flatness shows that roadway surrounding rock becomes loose coal cinder；Hole depth is between 6m~8m, in drilling Wall is relatively more complete.

When carrying out single hole test in the present embodiment, in step 201, according to the installation position of drilling 2, from the front to the back to multiple groups The drilling 2 carries out single hole test respectively；After single hole test is completed in three of drilling 2 drillings 2 described in upper one group, then The drilling 2 described in next group carries out single hole test；The single hole test result composition of three drilling 2 in drilling 2 described in every group Surrounding rock stability subregion test result at 2 present positions of group drilling；It completes to own on tested tunnel segment in step 201 After the single hole test of drilling 2, the surrounding rock stability subregion test result on tested tunnel segment at multiple and different positions is obtained；

The geologic radar detection result of tested tunnel segment described in step 202 is that the country rock of tested tunnel segment is steady Qualitative integrated testability result；

When carrying out comprehensive analysis and judgement in step 3, the country rock according to the tested tunnel segment obtained in step 202 is steady Qualitative integrated testability is as a result, and combine the country rock on the tested tunnel segment obtained in step 201 at multiple and different positions steady Qualitative subregion test result is determined the surrounding rock stability of tested tunnel segment.

In the present embodiment, the inspection instrument for borehole 3 and relaxation zone tester 4 are installed on length-adjustable telescopic arm 8, The telescopic arm 8 is mounted on translating trolleys 7；The horizontal frame installed in front has a translation track 9, the translation track One slip base 10 that can be moved forward and backward along translation track 9 is installed, 8 bottom of telescopic arm is mounted on slip base 10 on 9.

Three drillings 2 in step 1 in drilling 2 described in every group are laid on same vertical plane and the equal position of three In on the cross section of coal mine down-hole tunnel 1.

When carrying out surrounding rock stability joint test in step 2, push translating trolleys 7 along tested tunnel segment by backward Preceding movement, the translating trolleys 7 be moved to one group described in drill 2 installation position when, pass through the mobile slip base on translation track 9 The position of 10 pairs of telescopic arms 8 is adjusted, and carries out single hole test respectively three drillings 2 in the group drilling 2； When carrying out single hole test to any one drilling 2, first telescopic arm 8 is moved on the outside of the aperture of the drilling 2, recycles telescopic arm 8 Inspection instrument for borehole 3 and relaxation zone tester 4 are moved to bottom hole from the aperture of tested test boring 2, then by inspection instrument for borehole 3 and pine Moving-coil tester 4 is moved to aperture from the bottom hole of tested test boring 2, just completes the single hole test process of a drilling 2；Also, The translating trolleys 7 are in tested tunnel segment from the front to the back in moving process, from the front to the back by geologic radar detection instrument 5 Top plate and bottom plate and left and right sides tunnel side to tested tunnel segment are scanned.

In the present embodiment, the length of the tunnel segment is 40m~100m；The depth of drilling 2 described in step 1 is little In 15m, the spacing between drilling 2 described in the two adjacent groups of front and back is 2m~8m.

When actually being tested, according to specific needs, depth to the length of the tunnel segment, the drilling 2 and Spacing between drilling 2 described in the two adjacent groups of front and back adjusts accordingly.

In the present embodiment, cavity 14 described in step 202 is goaf or water aquifer.

In the present embodiment, the coal mine down-hole tunnel 1 is coal mine digging laneway or coal working face tunnel.

When actually being tested, from the front to the back to the coal mine digging laneway carry out tunneling process in or coal mining process In, using method described in step 1 to step 5, from the front to the back to the coal mine digging laneway or to coal work in face of The coal working face of side carries out improving stability of surrounding rocks in roadway joint test with tunnel.

In the present embodiment, when step 2012 carries out wall rock loosening test, the relaxation zone test result is Acoustic Wave Propagation speed (i.e. velocity of wave) is spent with the curve of the change in depth of tested test boring 2.Wherein, waviness value is bigger, and surrounding rock stability is better.

In conjunction with Fig. 6, the left and right sides tunnel side of the coal mine down-hole tunnel 1 is respectively southern side tunnel side (hereinafter referred to as " south Side ") and north side tunnel side (hereinafter referred to as " north side "), the relaxation zone test that three drilling 2 in one group of drilling 2 is provided in Fig. 6 ties Fruit.Wherein, in the coal mine down-hole tunnel 1 on tunnel cross section locating for group drilling 2, the drilling 2 of south side is located on rock, The length of drilling 2 is shorter and relaxation zone tester 4 detects 3.40m altogether, and test result is as follows: 2 bore depth of drilling of south side is Within the scope of 1.40m~2.40m, the acoustic wave propagation velocity received declines rapidly, is the 3636.40m/s from 1.40m from hole depth Drop to the 0m/s at 2.40m；And hole depth is within the scope of 2.40m~3.40m, the acoustic wave propagation velocity that receives on the contrary, from Hole depth is that the 0m/s at 2.40m rises to the 3636.40m/s at 3.40m；Through analyzing, hole depth is to receive sound at 2.40m The velocity of wave of wave be zero be because tunnel side is rock, thus there are coal-rock detection face, sound wave lost in communication process it is excessive, To the phenomenon that velocity of wave is zero occur.All in all, on tunnel cross section locating for group drilling 2, south side Acoustic Wave Propagation speed The maximum value of degree is 3636.40m/s, reflects that rock side at this (the south side i.e. on tunnel cross section locating for group drilling 2) is steady It is qualitative to be substantially better than coal body side.And hole depth is 3636.40m/s to receive the velocity of wave of sound wave with 3.40m at 1.40m, instead Mirroring the south in tunnel cross section locating for group drilling 2, to help relaxation zone smaller.

On the top plate in tunnel cross section locating for group drilling 2, drilling 2 detects 6.90m altogether.It totally sees, hole depth 0.90m Within the scope of~6.90m, less, velocity of wave is maintained at 400m/s or more, specifically: hole depth 0.90m~1.90m range for velocity of wave variation It is interior, the velocity of wave of sound wave is received from 408.20m/s microlitres to 409.80m/s；Within the scope of hole depth 1.90m~3.90m, receive The velocity of wave of sound wave is on a declining curve, slightly falls to 405.70m/s from 409.80m/s, and continuing decline in hole depth is to reach at 3.90m To 403.20m/s；Hole depth is within the scope of 3.90m~4.90m, and the velocity of wave for receiving sound wave slowly rises, from 403.20m/s It is raised to 407.30m/s；Hole depth is within the scope of 4.90m~5.90m, and the velocity of wave for receiving sound wave slowly declines, from 407.30m/s Drop to 401.60m/s；Hole depth is within the scope of 5.90m~6.90m, and the velocity of wave for receiving sound wave slowly rises, from 401.60m/s goes back up to 407.30m/s.All in all, on the top plate in tunnel cross section locating for group drilling 2, velocity of wave changing value The velocity of wave that sound wave is received within 2%, and at 0.90m is 408.20m/s, is maintained at higher level, and the comprehensive judgement group is bored Relaxation zone is in 0.90m hereinafter, stabilization of the top plate coal body within the scope of 0.90m~6.90m on the top plate in tunnel cross section locating for hole 2 Property is not much different, and stability is preferable.Value of wave speed near at 6.90m is higher, and firm anchor layer is provided for anchor cable.

The north side in tunnel cross section locating for group drilling 2, drilling 2 detect 8.40m altogether.Totally see, hole depth be 1.40m~ Within the scope of 2.40m, less, the 464.00m/s from hole depth 1.40m is slowly drop down to 461.90m/s for velocity of wave variation；Hole depth For within the scope of 2.40m~3.40m, velocity of wave is in rising trend, 511.50m/s is risen to from 461.90m/s, it is cross-section to reach the tunnel The velocity of wave peak value of the north side in face；Hole depth is within the scope of 3.40m~4.40m, and velocity of wave drops to 391.40m/s from 511.50m/s, Hole depth is held in 391.40m/s for 4.40m to velocity of wave between 8.40m.All in all, tunnel locating for group drilling 2 is cross-section The north side in face, velocity of wave variation concentrate on hole depth between 1.40m~4.40m；Hole depth is wave within the scope of 4.40m~8.40m Speed is maintained at 391.40m/s, reflects that this section of coal body stability is identical, and coal body bearing capacity is lower than hole depth 1.40m~4.40m Coal body in range.Hole depth is that the stability of coal body within the scope of 2.40m~3.40m is relatively preferable.

In the present embodiment, the geological radar scan image quantity that the geologic radar detection instrument 5 obtains is more, this sentence by Testing trend on the top plate of tunnel segment is (i.e. mileage in the longitudinal extension of coal mine down-hole tunnel 1 within the scope of 620m~570m For within the scope of 620m~570m) geological radar scan image be illustrated, be detailed in Fig. 7 and Fig. 8, Fig. 7 is geological radar scanning The scanning feature figure of image.As can be seen from Figure 7: being vertical 0~150ns log line scanning within the scope of 620m~597m in trend Characteristic pattern is without obvious stratiform, but with yellow, green, red and the interlaced distribution of blue；Tentatively judge that coal seam is split within the scope of this Gap development is abundant；It is moving towards within the scope of 597-570m, vertical 0~150ns log line scanning figure color is shown based on reddish black Coal seam is more intact；It is moved towards in range entirely, vertical 160~250ns ranging section characteristic pattern is in apparent green, blue bands Alternatively layered shape illustrates that there is delamination failure in coal seam within the scope of this.As can be seen from Figure 8: overall waveform is in disorder, and interface is discontinuous；? It moves towards within the scope of 620-600m that vertical 50~140ns ranging amplitude of wave form is larger, shows that there are biggish electricity between the ambient substance Sex differernce；It is entirely moving towards in range that vertical 160ns~250ns ranging waveform is unordered in a jumble, is being overlapping.It is obtained by above content Out, the top plate of the tunnel segment moves towards within the scope of 620-600m, and the cracks in coal seam development of about 10.0m thickness is abundant above top plate, office Portion coal seam is crushed more serious；It is moved towards within the scope of 620m~570m entirely, 11.0m~17.0m range (thickness right above top plate About 6.0m) in, coal seam delamination failure is obvious.Meanwhile the bottom plate of the tunnel segment moves towards within the scope of 620m~608m, below bottom plate The cracks in coal seam development of about 10.0m thickness is abundant, and moving towards about 3.5m high seam below 608m~570m range inner bottom plating is break up coal Layer；The coal seam of the other ranges of bottom plate is more intact, destroys without obvious.

In addition, the tunnel segment is moved towards within the scope of 570m~580m, it is more serious that south helps internal coal seam to be crushed, entire Move towards broken serious away from south side wall surface 12.0m~17.0m range (thickness about 8.0m) deep fractures in gamut.The tunnel segment Move towards within the scope of 590m~620m, it is broken more away from the internal coal seam of north side wall surface 14.0m~20.0m range (thickness about 6.0m) Seriously.

Thus, the detection result of geologic radar detection instrument 5 is as follows: top plate relaxation zone is 1.0m, vertical depth 1.0m~3.0m model It encloses for plastic zone, vertical depth 3.0m~6.5m range is elastic region, and 6.5m following region is initial stress area.North side relaxation zone be 1.5m, vertical depth 1.5m~4.0m range are plastic zone, and vertical 4.0m~7.5m range is elastic region, and 7.5m or so following region is Initial stress area.Side relaxation zone in south is 1.5m, and vertical depth 1.5m~3.0m range is plastic zone, and 3.0m~5.0m range is tunnel rock Body is crushed elastic region, more complete in vertical 5.0m or less strata structure, is initial stress area.

To sum up, after the completion of surrounding rock stability test, to inspection instrument for borehole 3, relaxation zone tester 4 and geologic radar detection instrument 5 test result summarize and comprehensive analysis.Wherein, the relaxation zone test of relaxation zone tester 4 is completed 2 is to drill The detection of the roadway surrounding rock aeration level of the heart, inspection instrument for borehole 3 intuitively illustrate the development degree in crack in drilling 2 and demonstrate Relaxation zone tester 4 as a result, last geology radar detector 5 to back, bottom plate and the left and right sides tunnel side carry out Comprehensive seamless scanning accordingly obtains the surrounding rock stability of the tunnel segment position.

In the present embodiment, the inspection instrument for borehole 3, relaxation zone tester 4 and geologic radar detection instrument 5 application method and Test result analysis method is conventional method well known to those skilled in the art.

In actual use, first by inspection instrument for borehole 3 and using drilling 2, to the crack of tested 1 inner wall of test boring Development degree is tested, and can judge whether the inner wall of drilling 2 has damage and collapsing phenomenon, while on the inner wall of drilling 2 Generated crack carries out related coal and rock force-bearing situation analysis；Secondly, using relaxation zone tester 4 to centered on 2 drillings The aeration level of roadway surrounding rock is tested in a certain range；Finally, using geologic radar detection instrument 5 to back, bottom plate Comprehensive seamless scanning is carried out with two sides tunnel side, grasps the quality of surrounding rock in roadway surrounding rock deep (0~30m), apparent tunnel The accurate location of goaf, water aquifer in country rock provides support for subsequent roadway support and working face mining.The drilling is peeped Test result depending on instrument 3, relaxation zone tester 4 and geologic radar detection instrument 5 complements one another, and realizes to coal mine down-hole tunnel 1 Surrounding rock stability carries out tunneling boring and overall length detection from surface to deep, thus can be to the adjoining rock stability of coal mine down-hole tunnel 1 Situation carries out accurate discrimination, then can Accurate Prediction forecast 1 coal and rock of coal mine down-hole tunnel preservation situation.On the whole, first First pass through the development degree that inspection instrument for borehole 3 discloses roadway surrounding rock borehole wall crack；Secondly, being visited by relaxation zone tester 4 The development range that roadway surrounding rock crack is surveyed to drill centered on 2, i.e. relaxation zone radius；Finally, being visited by geologic radar detection instrument 5 The position of the other structures such as roadway surrounding rock structure hollow hole 14 is surveyed, realizes tunnel drilling 2, relaxation zone radius and full face big model It encloses, long range seamless integration detection.

The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention Technical spirit any simple modification to the above embodiments, change and equivalent structural changes, still fall within skill of the present invention In the protection scope of art scheme.

Claims (8)

1. a kind of improving stability of surrounding rocks in roadway joint test method, used improving stability of surrounding rocks in roadway combined test system includes control Host (6) processed, the wall-rock crack development degree that drilling (2) inner wall drilled through is helped to coal mine down-hole tunnel (1) top plate or tunnel The inspection instrument for borehole (3) tested, the relaxation zone tester (4) that relaxation zone test is carried out to drilling (2) side country rock and right The geologic radar detection instrument (5) that the adjoining rock stability situation of coal mine down-hole tunnel (1) top plate or tunnel side is tested, the drilling Endoscope (3), relaxation zone tester (4) and geologic radar detection instrument (5) connect with control host (6)；It is characterized by: institute Improving stability of surrounding rocks in roadway combined test system is stated to further include translating trolleys (7) and be mounted on translating trolleys (7) and length is adjustable Telescopic arm (8), the inspection instrument for borehole (3) and relaxation zone tester (4) are installed on telescopic arm (8)；The translation is small Vehicle (7) includes horizontal frame and the multiple traveling wheels for being mounted on the horizontal frame bottom, the geologic radar detection instrument (5) and Control host (6) is installed in the horizontal frame, after the geologic radar detection instrument (5) is mounted on the horizontal frame Upper side；

Along tunnel longitudinal extension, multiple tunnel segments is divided to carry out surrounding rock stability to coal mine down-hole tunnel (1) from the front to the back The surrounding rock stability joint test method of joint test, multiple tunnel segments is all the same；For any one tunnel segment into When row surrounding rock stability joint test, comprising the following steps:

Step 1: drilling: drilling through multiple groups drilling (2) in tested tunnel segment by drilling machine, drilling (2) described in multiple groups is by rear It lays forward；Drilling (2) described in every group includes three drillings (2), and three drillings (2) are respectively one and are laid in coal mine What drilling (2) and two left and right sides tunnels for being laid in coal mine down-hole tunnel (1) respectively on underworkings (1) top plate were helped It drills (2)；

Step 2: surrounding rock stability joint test, process are as follows:

Step 201, single hole test: the drilling (2) described in the multiple groups drilled through in step 1 is tested respectively, is drilled described in multiple groups (2) test method of all drillings (2) is all the same in；When testing any one drilling (2), comprising the following steps:

Step 2011, drilling are pried through: being obtained the image information of tested drill hole inner wall by inspection instrument for borehole (3), and be will acquire Image information be uploaded to control host (6) synchronize display and record；The image information shown according to host (6) are controlled, The wall-rock crack development degree of tested drill hole inner wall is judged；

Step 2012, wall rock loosening test: relaxation zone test is carried out to tested test boring using relaxation zone tester (4), and will Relaxation zone test result is uploaded to control host (6) and synchronizes display and record；According to the relaxation zone of control host (6) display Test result judges the loosening area of surrounding rocks of tested test boring side country rock, completes the single hole test of tested test boring Process, and the single hole test result of the drilling (2) is recorded；

The single hole test result of the tested test boring includes the inner wall wall-rock crack development degree and side country rock of the drilling (2) Loosening area of surrounding rocks；

Step 2011 is repeated several times to step 2012, until completing all drillings (2) on tested tunnel segment in step 2013 Single hole test process, and obtain the single hole test result of all drillings (2)；

Step 202, tunnel entirety geologic radar detection: using geologic radar detection instrument (5), saves from the front to the back to tested tunnel The top plate and bottom plate of section and left and right sides tunnel side carry out full section scanning respectively, and scanning result is uploaded to control host (6) Synchronize display and record；According to the scanning result of control host (6) display, to the top plate and bottom plate of tested tunnel segment Judged with the adjoining rock stability situation of left and right sides tunnel side, and top plate and bottom plate and left and right sides tunnel are helped and whether deposited Position and structure in empty (14) and existing empty (14) are determined, and complete the geological radar of tested tunnel segment Detection process, and the geologic radar detection result of tested tunnel segment is recorded；

The geologic radar detection result of the tested tunnel segment includes top plate and bottom plate and the left and right sides lane of the tunnel segment The adjoining rock stability situation of road side, the position and structure that whether there is empty (14) and existing empty (14)；

Step 3: comprehensive analysis and judgement: testing knot in conjunction with the single hole for being tested all drillings (2) in the segment of tunnel in step 201 The geologic radar detection of tunnel segment is tested obtained in fruit and step 202 as a result, steady to the country rock of tested tunnel segment It is qualitative to be determined, complete the surrounding rock stability joint test process of tested tunnel segment；

Step 4: the method according to step 1 into step 3, carries out surrounding rock stability joint test to next tunnel segment；

Step 5: step 4 is repeated several times, until completing the surrounding rock stability joint test process of coal mine down-hole tunnel (1).

2. improving stability of surrounding rocks in roadway joint test method described in accordance with the claim 1, it is characterised in that: the inspection instrument for borehole (3), it is attached by cable between relaxation zone tester (4) and geologic radar detection instrument (5) and control host (6).

3. improving stability of surrounding rocks in roadway joint test method described in accordance with the claim 1, it is characterised in that: further include an installation Translation track (9) on front side of the horizontal frame and the slip base (10) that can be moved forward and backward along translation track (9), the sliding Seat (10) is mounted on translation track (9), and telescopic arm (8) bottom is mounted on slip base (10)；The translation track (9) It is laid along the transverse width direction of the horizontal frame and its cross section is undercut shape, the translation track (9) is by a position The vertical track of lower section at left and right sides of the horizontal rail is located in the horizontal rail on the horizontal frame top and two It is formed by connecting, the horizontal rail and two vertical tracks are laid on same vertical plane.

4. improving stability of surrounding rocks in roadway joint test method described in accordance with the claim 3, it is characterised in that: the telescopic arm (8) It is attached in hinged way between bottom and slip base (10), equipped with for telescopic arm (8) bottom peace on the slip base (10) The hinged seat (11) of dress；It is equipped on the slip base (10) and the angle between telescopic arm (8) and slip base (10) is adjusted The adjustment structure of section, the adjustment structure are hydraulic cylinder (12), and the cylinder base of the hydraulic cylinder (12) is installed in hinged way On slip base (10) and its piston rod top end is mounted in hinged way on telescopic arm (8)；The telescopic arm (8) includes flexible The extension sleeve (8-2) of bar (8-1) and multiple coaxial packages from the inside to the outside on telescopic rod (8-1), the inspection instrument for borehole (3) It is installed on telescopic rod (8-1) with relaxation zone tester (4).

5. according to the method for claim 1, it is characterised in that: carry out drilling in step 2011 when prying through, first peep drilling It is moved to bottom hole from the aperture of tested test boring depending on instrument (3), then inspection instrument for borehole (3) is moved to from the bottom hole of tested test boring Aperture；In inspection instrument for borehole (3) moving process, the synchronous image information for obtaining tested drill hole inner wall position；It is right When the wall-rock crack development degree of tested drill hole inner wall is judged, believed according to the image of tested drill hole inner wall position Breath, rock crusher situation to tested drill hole inner wall position and with the presence or absence of the quantity in crack and existing crack, Position, width, extending direction and length are judged.

6. according to method described in claim 1 or 5, it is characterised in that: when carrying out single hole test in step 201, according to drilling (2) installation position, the drilling (2) described in multiple groups carries out single hole test respectively from the front to the back；To drilling (2) described in upper one group After three drillings (2) complete single hole test, then the drilling (2) described in next group carries out single hole test；It is bored described in every group The single hole test result of three drillings (2) forms the surrounding rock stability subregion at group drilling (2) present position in hole (2) Test result；After the single hole test for completing all drillings (2) on tested tunnel segment in step 201, tested tunnel is obtained Surrounding rock stability subregion test result on segment at multiple and different positions；

The geologic radar detection result that tunnel segment is tested described in step 202 is the surrounding rock stability of tested tunnel segment Integrated testability result；

When carrying out comprehensive analysis and judgement in step 3, according to the surrounding rock stability of the tested tunnel segment obtained in step 202 Integrated testability is as a result, and in conjunction with the surrounding rock stability at multiple and different positions on the tested tunnel segment obtained in step 201 Subregion test result is determined the surrounding rock stability of tested tunnel segment.

7. according to the method for claim 6, it is characterised in that: the horizontal frame installed in front has a translation track (9), the slip base (10) that can be moved forward and backward along translation track (9), the telescopic arm are installed on the translation track (9) (8) bottom is mounted on slip base (10)；The translation track (9) is laid along the transverse width direction of the horizontal frame and it Cross section is undercut shape, and the translation track (9) is by one positioned at the horizontal rail on the horizontal frame top and two points It the vertical track of lower section Wei Yu not be formed by connecting at left and right sides of the horizontal rail, the horizontal rail and two vertical rails Road is laid on same vertical plane；It is attached in hinged way between telescopic arm (8) bottom and slip base (10), institute It states on slip base (10) equipped with the hinged seat (11) installed for telescopic arm (8) bottom；It is equipped on the slip base (10) to stretching The adjustment structure that angle between contracting arm (8) and slip base (10) is adjusted, the adjustment structure is hydraulic cylinder (12), described The cylinder base of hydraulic cylinder (12) is mounted on slip base (10) in hinged way and its piston rod top end is installed in hinged way On telescopic arm (8)；The telescopic arm (8) includes telescopic rod (8-1) and multiple coaxial packages from the inside to the outside at telescopic rod (8-1) On extension sleeve (8-2), the inspection instrument for borehole (3) and relaxation zone tester (4) are installed on telescopic rod (8-1)；

Three drillings (2) in step 1 in drilling (2) described in every group are laid on same vertical plane and the equal position of three In on the cross section of coal mine down-hole tunnel (1)；

In step 2 carry out surrounding rock stability joint test when, push translating trolleys (7) along tested tunnel segment from the front to the back It is mobile, the translating trolleys (7) be moved to one group described in drilling (2) installation position when, pass through mobile on translation track (9) slide It moves seat (10) to be adjusted the position of telescopic arm (8), and respectively three drillings (2) in the group drilling (2) Carry out single hole test；When carrying out single hole test to any one drilling (2), telescopic arm (8) is first moved to the aperture of the drilling (2) Outside recycles telescopic arm (8) to be moved to inspection instrument for borehole (3) and relaxation zone tester (4) from the aperture of tested test boring Bottom hole, then inspection instrument for borehole (3) and relaxation zone tester (4) are moved to aperture from the bottom hole of tested test boring, just complete one The single hole test process of a drilling (2)；Also, the translating trolleys (7) are moved through from the front to the back in tested tunnel segment Cheng Zhong, by geologic radar detection instrument (5), the top plate and bottom plate to tested tunnel segment and left and right sides tunnel are helped from the front to the back It is scanned.

8. according to method described in claim 1 or 5, it is characterised in that: the length of the tunnel segment is 40m~100m；Step The depth of drilling (2) described in rapid one is not more than 15m, and the spacing between drilling (2) described in the two adjacent groups of front and back is 2m~8m.