CN107765339A - 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 method of testing, the test device that this method uses includes control main frame, the inspection instrument for borehole for drilling through the wall-rock crack development degree of drill hole inner wall and being tested, the geologic radar detection instrument that drilling the week side of boss 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 is helped to the top plate of coal mine down-hole tunnel or tunnel；The method of testing includes step：First, drill；2nd, surrounding rock stability joint test：Single hole is tested and tunnel entirety geologic radar detection；3rd, comprehensive analysis and judgement；4th, next tunnel section surrounding rock stability joint test；5th, step 4 is repeated several times, completes the surrounding rock stability joint test process of coal mine down-hole tunnel.The present invention is reasonable in design and realizes that easy, test result is accurate, can solve the problems, such as that precision is relatively low existing for existing single monitoring means, is difficult to accurately test 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《Improving stability of surrounding rocks in roadway joint test device and method of testing》Application for a patent for invention divisional application.

Technical field

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

Background technology

To ensure that coal mine down-hole tunnel is stable, roadway surrounding rock can be entered using Detection Techniques before roadway support design is carried out Row test, it is stable by assessing the analysis and summary of result of detection roadway surrounding rock, foundation is provided for roadway support design, with to not Surrounding rock stability with degree carries out roadway support design.Nowadays, it is more to mine wall rock's level technological means, such as sound hair Penetrate, optical fiber, resistance stressometer etc., but all concentrate on a certain technological means, due to the diversity and complexity of coal rock layer preservation, The maximization of bulk and at the scene monitor in by extraneous factor disturb 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 in the range of specific Space Time-ground, it is difficult to realizes foot to engineering practice Enough effective guidances.Existing single monitoring means is primarily present following several respects problem：Firstth, one borehole hole wall crack Development degree can not reflect the overall looks of wall-rock crack, and precision is relatively low；Secondth, the roadway surrounding rock centered on one borehole splits Gap develops range test, can not detect the other structures such as complex condition water aquifer, goaf, accuracy of detection is relatively low；3rd, visit Position and the scope of water aquifer, goaf and other structures (such as reinforcing bar) are surveyed, supporting that can not be to local tunnel provides foundation, Monitoring accuracy is relatively low；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 the degree of accuracy is relatively low；5th, as the more ore body of the increase of mining depth is opened Adopt and enter deep, the natural 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 relatively low.

The content 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 provide a kind of roadway surrounding rock Stability joint test device, its is simple in construction, reasonable in design and use is easy to operate, test result is accurate, can solve existing Precision existing for single monitoring means is relatively low, the problem of being difficult to accurately test improving stability of surrounding rocks in roadway.

In order to solve the above technical problems, the technical solution adopted by the present invention is：A kind of improving stability of surrounding rocks in roadway joint test Device, it is characterised in that：The country rock of the drill hole inner wall drilled through is helped including control main frame, 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 the week side of boss country rock and The geologic radar detection instrument that the adjoining rock stability situation helped to coal mine down-hole tunnel top plate or tunnel is tested, the drilling are spied on Instrument, relaxation zone tester and geologic radar detection instrument connect with control main frame.

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 between geologic radar detection instrument and control main frame by cable.

Above-mentioned improving stability of surrounding rocks in roadway joint test device, it is characterized in that：It is also including translating trolleys and small installed in translating On car and length-adjustable telescopic arm, inspection instrument for borehole and the relaxation zone tester are installed on telescopic arm；The translation Dolly includes horizontal frame and multiple road wheels installed in the horizontal frame bottom, the geologic radar detection instrument and control Main frame is installed in the horizontal frame, and the geologic radar detection instrument is arranged 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：Also the horizontal frame is arranged on including one The translation track of front side and the slip base that can be moved forward and backward along translation track, the slip base is arranged on translation track, described Telescopic arm bottom is arranged on slip base；Transverse width direction of the translation track along the horizontal frame is laid and its is transversal Face is undercut shape, and the translation track is located at institute respectively by one positioned at the horizontal rail on the horizontal frame top and two 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, and the hinged seat for the installation of telescopic arm bottom is housed on the slip base；It is provided with the slip base The adjustment structure that angle between telescopic arm and slip base is adjusted, the adjustment structure are hydraulic cylinder, the hydraulic cylinder Cylinder base in hinged way be arranged on slip base on and its piston rod top in hinged way be arranged on telescopic arm on；It is described Telescopic arm includes expansion link and multiple coaxial packages from the inside to the outside the extension sleeve on expansion link, the inspection instrument for borehole and pine Moving-coil tester is installed on expansion link.

Meanwhile the invention also discloses a kind of method and step it 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 extending direction, Multiple tunnel sections are divided to carry out surrounding rock stability joint test to coal mine down-hole tunnel from the front to the back, multiple tunnel sections Surrounding rock stability joint test method all same；When carrying out surrounding rock stability joint test for any one tunnel section, including Following steps：

Step 1: drilling：Multigroup drilling is drilled through in tested tunnel section by rig, multigroup drilling is by backward Preceding laying；Being drilled 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：The multigroup drilling drilled through in step 1 is tested respectively, multigroup brill The method of testing all same of all drillings in hole；When testing any one drilling, comprise the following steps：

Step 2011, drilling are spied on：The image information of tested drill hole inner wall is obtained by inspection instrument for borehole, and will be obtained Image information be uploaded to control main frame synchronize display and record；The image information shown according to control main frame, to tested The wall-rock crack development degree of test boring inwall 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 main frame and synchronizes display and record；The relaxation zone shown according to control main frame tests knot Fruit, the loosening area of surrounding rocks for being tested test boring the week side of boss country rock is judged, complete 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 inwall wall-rock crack development degree of the drilling and all gussets The loosening area of surrounding rocks of rock；

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

Step 202, tunnel entirety geologic radar detection：Using geologic radar detection instrument, from the front to the back to being tested tunnel Top plate, bottom plate and the left and right sides tunnel side of section carry out full section scanning respectively, and scanning result is uploaded into control main frame Synchronize display and record；The scanning result shown according to control main frame, top plate, bottom plate and a left side to being tested tunnel section The adjoining rock stability situation of right both sides tunnel side is judged, and top plate, bottom plate and left and right sides tunnel are helped with the presence or absence of sky Hole and existing empty position and structure are determined, and complete the geologic radar detection process of tested tunnel section, and The geologic radar detection result for being tested tunnel section is recorded；

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

Step 3: comprehensive analysis and judgement：Knot is tested with reference to the single hole that all drillings in the section of tunnel are tested in step 201 The geologic radar detection result of tested tunnel section is drawn in fruit and step 202, the adjoining rock stability to being tested tunnel section Property be determined, complete the surrounding rock stability joint test process of tested tunnel section；

Step 4: according to step 1 to the method described in step 3, surrounding rock stability is carried out to next tunnel section 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：When carrying out drilling in step 2011 and spying on, 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；Wall-rock crack to being 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 Put the rock crusher situation at place and with the presence or absence of the quantity in crack and existing crack, position, width, bearing of trend and length Judged.

The above method, it is characterized in that：When single hole test is carried out in step 201, according to the installation position of drilling, from the front to the back Single hole test is carried out respectively to multigroup drilling；Single hole test is completed in three drillings for treating to drill described in one group Afterwards, then to drilling described in next group single hole test is carried out；The single hole test result group of three drilling in drilling described in every group Surrounding rock stability subregion test result at group drilling present position；Institute on tested tunnel section is completed in step 201 After the single hole for having drilling is tested, the surrounding rock stability subregion test knot at multiple diverse locations on tested tunnel section is obtained Fruit；

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

It is steady according to the country rock of the tested tunnel section drawn in step 202 when comprehensive analysis and judgement are carried out in step 3 Qualitative integrated testability result, and the country rock combined on the tested tunnel section drawn in step 201 at multiple diverse locations is steady Qualitative subregion test result, the surrounding rock stability for being tested tunnel section is determined.

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

The horizontal frame installed in front has a translation track, and one is provided with the translation track can be along translation rail The movable slip base in road, the telescopic arm bottom are arranged 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 by one positioned at the horizontal frame top Horizontal rail and two vertical tracks respectively positioned at horizontal rail left and right sides lower section are formed by connecting, the horizontal rail It is laid on same vertical plane with two vertical tracks；Enter in hinged way between the telescopic arm bottom and slip base Row is connected, and the hinged seat for the installation of telescopic arm bottom is housed on the slip base；Be provided with 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 On slip base and its piston rod top is arranged in hinged way to be arranged on telescopic arm in hinged way；The telescopic arm includes The extension sleeve of expansion link and multiple coaxial packages from the inside to the outside on expansion link, inspection instrument for borehole and the relaxation zone tester It is installed on expansion link；

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 surrounding rock stability joint test is carried out in step 2, the tested tunnel section in translating trolleys edge is promoted from the front to the back Move, when the translating trolleys are moved to drilling installation position described in one group, by moving slip base on translation track to stretching The position of contracting arm is adjusted, and carries out single hole test respectively to 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 With relaxation zone tester bottom hole is moved to from the aperture of tested test boring, 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 section of tunnel from the front to the back in moving process, by geologic radar detection instrument from the front to the back to being tested the top of tunnel section 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 section is 40m~100m；The depth to be drilled described in step 1 Degree is not more than 15m, and the spacing between drilling described in front and rear two adjacent groups is 2m~8m.

The present invention has advantages below compared with prior art：

1st, used improving stability of surrounding rocks in roadway joint test apparatus structure is simple, reasonable in design and processing and fabricating is easy, Input cost is relatively low, mainly by control main frame, 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 the week side of boss country rock and The geologic radar detection instrument that the adjoining rock stability situation helped to coal mine down-hole tunnel top plate or tunnel is tested forms.

2nd, used improving stability of surrounding rocks in roadway joint test device uses easy to operate, 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 promoted to be moved from the front to the back along tested tunnel section, translating trolleys When being moved to one group of drilling installation position, the position of telescopic arm is adjusted by moving slip base on translation track, and Three drillings in being drilled to the group carry out single hole test respectively；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 into 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 section Geologic radar detection instrument is scanned to top plate, bottom plate and the left and right sides tunnel side for being tested tunnel section from the front to the back.

3rd, used translating trolleys are simple in construction and movement simplicity, energy simplicity move forward and backward in tunnel, realization simplicity, The purpose of long range test quickly is carried out to the surrounding rock stability of coal mine down-hole tunnel.

4th, actual installation is easy, and translation track and slip base are provided with translating trolleys, and telescopic arm is arranged on slip base, The position of telescopic arm is adjusted by slip base, realizes the demand to being tested respectively with three drilling in group drilling； 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 delivered in drilling, and can carry out easy, quick regulation to being sent into depth, and it is convenient and easy to operate to realize, uses Effect is good, can significantly simplify the single hole test process of drilling.

5th, 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, and quick, accurate test can be carried out to improving stability of surrounding rocks in roadway, and popularizing application prospect is extensive.

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

7th, using effect is good and measuring accuracy is high, carries out drilling for one borehole and spy on that wall-rock crack can not be reflected comprehensively The situation of development degree, it is closely related with medium character according to acoustic velocity based on acoustic wave of rock Detection Techniques, receive The velocity of wave of sound wave is smaller to show that enclosing lithologies are poorer, and intensity is smaller, the smaller principle of modulus of elasticity, is sent out with relaxation zone tester Raw sound wave detects to the roadway surrounding rock cranny development in the range of certain radius centered on each drilling and aeration level, makes up The defects of one borehole information is not complete is spied on using drilling.In addition, for drilling spy on relaxation zone tester can not on a large scale, Frequency electromagnetic waves, are sent into by the shortcomings that over long distances and realizing drift section seamless detection using geologic radar detection instrument transmitting antenna Region to be measured, due to different media with different physical characteristics, also with different dielectric constants, do not connect 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 relation of typical geology phenomenon and radar signature image, you can The geological state of underground is made explanations according to the change of figure；Underworkings tunneling boring is carried out by geologic radar detection instrument Scanning probe, including top plate, bottom plate and both sides tunnel are helped, and finally realize the full face long range of roadway surrounding rock, a wide range of, seamless 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：Firstth, from roadway surrounding rock surface to internal crack and structure is entered The comprehensive test analysis of row, stability of the roadway surrounding rock under initial fissure and artifical influence factor effect is disclosed completely；Secondth, it is more Kind means of testing carries out selective, targetedly integrated use to overall structure again from point to face；3rd, can effectively make up makes The defects of one borehole information is not complete is spied on drilling；4th, it can realize that tunnel is a wide range of, full face over long distances seamless spy Survey, thus abundant data supporting and foundation can be provided for roadway support parameter adjustment and stability assessment, for ensureing colliery The safety of underground operators is significant with normally producing.

Below by drawings and examples, technical scheme is described in further detail.

Brief description of the drawings

Fig. 1 is the structural representation 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 reference chart of improving stability of surrounding rocks in roadway joint test device of the present invention.

Fig. 4 is the FB(flow block) 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 at depth 1m in the tested test boring of inspection instrument for borehole of the present invention acquisition.

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

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

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

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

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

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

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

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 the relaxation zone test result schematic diagram that relaxation zone tester of the present invention test is drawn.

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

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

Description of reference numerals:

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

4-relaxation zone tester；4-1-bearing；5-geologic radar detection instrument；

6-control main frame；7-translating trolleys；8-telescopic arm；

8-1-expansion link；8-2-extension sleeve；9-translation track；

10-slip base；11-hinged seat；12-hydraulic cylinder；

13-fastening bolt；14-cavity；15-vertical supports；

16-bolt mounting holes.

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 main frame 6, to coal The drilling that the wall-rock crack development degree that the inwall of drilling 2 drilled through is helped in the top plate of ore deposit underworkings 1 or tunnel is tested is spied on Instrument 3, the relaxation zone tester 4 of relaxation zone test is carried out to 2 the week side of boss country rocks of drilling and the top plate of coal mine down-hole tunnel 1 or tunnel are helped 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 main frame 6.

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

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

In the present embodiment, improving stability of surrounding rocks in roadway joint test device of the present invention, in addition to 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 multiple road wheels installed in the horizontal frame bottom, the geology Radar detector 5 and control main frame 6 are installed in the horizontal frame, and the geologic radar detection instrument 5 is arranged on the water The back side top of flatcar frame.

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

In the present embodiment, the horizontal frame is shaped steel support 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, in addition to one be arranged on the level Translation track 9 and the slip base 10 that can be moved forward and backward along translation track 9 on front side of vehicle frame, the slip base 10, which is arranged on, translates rail On road 9, the bottom of telescopic arm 8 is arranged on slip base 10.Transverse width side of the translation track 9 along the horizontal frame It is undercut shape to laying and its cross section, the translation track 9 is by a horizontal rail for being located at the horizontal frame top The vertical track of lower section is formed by connecting at left and right sides of the horizontal rail respectively with two, 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 the bottom of slip base 10 is opened There is the groove slid back and forth along translation track 9.Also, locked between the slip base 10 and translation track 9 by fastener Fasten.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 the bottom of telescopic arm 8 and slip base 10, the slip base Hinged seat 11 for the installation of the bottom of telescopic arm 8 is housed on 10.Be provided with 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 Mode is connect on slip base 10 and its piston rod top is arranged on telescopic arm 8 in hinged way.

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

During 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 spied on for that can carry out the optical borehole of 360 ° of rotations inside drilling 2 Instrument.

During actual installation, the inspection instrument for borehole 3 is arranged on expansion link 8-1 tops, and the bottom of relaxation zone tester 4 is set Bearing 4-1 is equipped with, is attached between the bearing 4-1 and expansion link 8-1 by fastening bolt 13, on the expansion link 8-1 It is provided with multiple bolt mounting holes 16 installed for fastening bolt 13.

Positioned at outermost extension sleeve 8-2 it is outer barrel in multiple extension sleeve 8-2 during actual use, institute The piston rod top for stating hydraulic cylinder 12 is arranged on the outer barrel in hinged way.

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

Step 1: drilling：Multigroup drilling 2 is drilled through in tested tunnel section by rig, multigroup drilling 2 is by rear Lay 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 the top plate of road 1 are helped；

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

Step 201, single hole test：The multigroup drilling 2 drilled through in step 1 is tested respectively, multigroup brill The method of testing all same of all drillings 2 in hole 2；When testing any one drilling 2, comprise the following steps：

Step 2011, drilling are spied on：The image information of the tested inwall of test boring 2 is obtained by inspection instrument for borehole 3, and will be obtained The image information taken is uploaded to control main frame 6 and synchronizes display and record；The image information shown according to control main frame 6 is right The wall-rock crack development degree of the tested inwall of test boring 2 is judged；

Step 2012, wall rock loosening test：Relaxation zone test is carried out to tested test boring 2 using relaxation zone tester 4, and Relaxation zone test result is uploaded to control main frame 6 and synchronizes display and record；The relaxation zone shown according to control main frame 6 is surveyed Test result, the loosening area of surrounding rocks for being tested the week side of boss country rock of test boring 2 is judged, complete 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 the inwall wall-rock crack development degree and the week side of boss of the drilling 2 The loosening area of surrounding rocks (i.e. relaxation zone radius) of country rock；

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

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

The geologic radar detection result of the tested tunnel section includes top plate, bottom plate and the left and right two of the tunnel section 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：With reference to the single hole test that all drillings 2 in the section of tunnel are tested in step 201 As a result it is steady to the country rock that is tested tunnel section with geologic radar detection result that tested tunnel section is drawn in step 202 It is qualitative to be determined, complete the surrounding rock stability joint test process of tested tunnel section；

Step 4: according to step 1 to the method described in step 3, surrounding rock stability is carried out to next tunnel section 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.

During actual use, relaxation zone test is carried out to tested test boring 2 by relaxation zone tester 4, can understand draw by The wall rock loosening interface of the week side of boss country rock of testing bore holes 2 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.

When carrying out drilling in the present embodiment, in step 2011 and spying on, 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 into aperture from the bottom hole of tested test boring 2；The inspection instrument for borehole 3 moves During, the synchronous image information for obtaining the tested inwall position of test boring 2；Wall-rock crack to being tested the inwall of test boring 2 It is each to the tested inwall of test boring 2 according to the image information of the tested inwall position of test boring 2 when development degree is judged The rock crusher situation of opening position and with the presence or absence of the quantity in crack and existing crack, position, width, bearing of trend and length Degree is judged.

According to the image information of the tested inwall position of test boring 2, can judge drilling 2 inwall whether have damage and Cave in phenomenon, while related coal and rock force-bearing situation analysis is carried out to crack existing on the inwall (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 moved from bottom hole Image information during to aperture is contrasted, and crack existing on the inwall (i.e. hole wall) of drilling 2 can be carried out related Coal and rock force-bearing situation is analyzed：If the stress suffered by hole wall is larger, its by stress destruction with regard to serious, accordingly occur and cave in Phenomena such as, you can clearly show the destructiveness of coal and rock at drilling 2.

, should with reference to 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 inwall positions of drilling is analyzed, and draws 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 extension；Hole depth is between 2m~3m, and more longitudinal crack, two are extended down at 3m；Hole depth be 3m~4m it Between, a crack is continued and extend at 4m；For hole depth between 4m~5m, crack extends to 4.5m or so, crushes, chip off-falling, bores Dipped ring is whole；Hole depth crushes 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, inwall is smooth；Hole depth is between 7m~6m, inwall out-of-flatness；Hole depth be 6m~ Between 5m, crush, very out-of-flatness, chip off-falling；Hole depth is very broken between 5m~4m, out-of-flatness, and inwall is concavo-convex obvious, It is jagged；Hole depth is between 4m~3m, a big crack extension；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, inwall is very uneven.

According to the image information of the inwall position of tested test boring 2 of above-mentioned acquisition, draw and seen by inspection instrument for borehole 3 The wall-rock crack development degree of the inwall of tested test boring 2 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 is continued 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 is changed into loose coal cinder；Hole depth is between 6m~8m, in drilling Wall is relatively more complete.

When single hole test is carried out in the present embodiment, in step 201, according to the installation position of drilling 2, from the front to the back to multigroup The drilling 2 carries out single hole test respectively；After single hole test is completed in three drillings 2 of drilling 2 described in upper one group, then Single hole test is carried out to drilling 2 described in next group；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；Complete to own on tested tunnel section in step 201 After the single hole test of drilling 2, the surrounding rock stability subregion test result at multiple diverse locations on tested tunnel section is obtained；

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

It is steady according to the country rock of the tested tunnel section drawn in step 202 when comprehensive analysis and judgement are carried out in step 3 Qualitative integrated testability result, and the country rock combined on the tested tunnel section drawn in step 201 at multiple diverse locations is steady Qualitative subregion test result, the surrounding rock stability for being tested tunnel section is determined.

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 arranged 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, the bottom of telescopic arm 8 is arranged 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, promote translating trolleys 7 along tested tunnel section by backward Preceding movement, the translating trolleys 7 are moved to described in one group when drilling 2 installation position, 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 to 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 section from the front to the back in moving process, by geologic radar detection instrument 5 from the front to the back Top plate, bottom plate and the left and right sides tunnel side for being tested tunnel section are scanned.

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

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

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

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

When actually being tested, from the front to the back to the colliery digging laneway carry out tunneling process in or coal mining process In, using step 1 to the method described in step 5, from the front to the back to the colliery digging laneway or to coal work in face of The coal-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 Spend the curve of (i.e. velocity of wave) with the change in depth of tested test boring 2.Wherein, waviness value is bigger, and surrounding rock stability is better.

With reference to 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 drillings 2 in one group of drilling 2 are provided in Fig. 6 ties Fruit.Wherein, on the tunnel cross section in the coal mine down-hole tunnel 1 residing 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：South side the bore depth of drilling 2 be In the range of 1.40m~2.40m, the acoustic wave propagation velocity received declines rapidly, is the 3636.40m/s at 1.40m from hole depth The 0m/s dropped at 2.40m；And hole depth is in the range of 2.40m~3.40m, the acoustic wave propagation velocity that receives on the contrary, from Hole depth is the 3636.40m/s that the 0m/s at 2.40m is risen at 3.40m；Through analysis, hole depth is to receive sound at 2.40m It zero is because tunnel side is rock that the velocity of wave of ripple, which is, thus coal-rock detection face be present, sound wave lost in communication process it is excessive, So as to the phenomenon that velocity of wave is zero occur.All in all, on the tunnel cross section residing for group drilling 2, south side Acoustic Wave Propagation speed The maximum of degree is 3636.40m/s, reflects that rock side at this (the south side i.e. residing for group drilling 2 on the cross section of tunnel) 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 at 1.40m with 3.40m, instead Mirroring the south in tunnel cross section residing for group drilling 2, to help relaxation zone smaller.

Residing for group drilling 2 on the top plate in tunnel cross section, drilling 2 detects 6.90m altogether.Totally see, hole depth 0.90m In the range of~6.90m, velocity of wave change is little, and velocity of wave is maintained at more than 400m/s, is specifically：Hole depth 0.90m~1.90m scopes It is interior, the velocity of wave of sound wave is received from 408.20m/s microlitres to 409.80m/s；In the range 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 it is to be reached at 3.90m to continue to decline in hole depth To 403.20m/s；Hole depth is that the velocity of wave for receiving sound wave slowly rises, from 403.20m/s in the range of 3.90m~4.90m It is raised to 407.30m/s；Hole depth is that the velocity of wave for receiving sound wave slowly declines, from 407.30m/s in the range of 4.90m~5.90m Drop to 401.60m/s；Hole depth is that the velocity of wave for receiving sound wave slowly rises in the range of 5.90m~6.90m, from 401.60m/s goes back up to 407.30m/s.All in all, residing for group drilling 2 on the top plate in tunnel cross section, 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 synthetic determination group is bored Residing for hole 2 on the top plate in tunnel cross section relaxation zone in below 0.90m, stabilization of the top plate coal body in the range of 0.90m~6.90m Property is more or less the same, and stability is preferable.6.90m the value of wave speed near place is higher, firm anchor layer is provided for anchor cable.

The north side in tunnel cross section residing for group drilling 2, drilling 2 detect 8.40m altogether.Totally see, hole depth be 1.40m~ In the range of 2.40m, velocity of wave change is little, and 461.90m/s is slowly drop down to from the 464.00m/s at hole depth 1.40m；Hole depth In the range of 2.40m~3.40m, velocity of wave is in rising trend, and 511.50m/s is risen to from 461.90m/s, and it is cross-section to reach the tunnel The velocity of wave peak value of the north side in face；Hole depth is that velocity of wave drops to 391.40m/s from 511.50m/s in the range of 3.40m~4.40m, Hole depth is held in 391.40m/s for 4.40m to velocity of wave between 8.40m.All in all, tunnel residing for group drilling 2 is cross-section The north side in face, velocity of wave change concentrate on hole depth between 1.40m~4.40m；Hole depth is ripple in the range 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 less than hole depth 1.40m~4.40m In the range of coal body.Hole depth is that the stability of coal body in the range 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 Trend is tested on the top plate of tunnel section as (mileage i.e. on the Longitudinal extending direction of coal mine down-hole tunnel 1 in the range of 620m~570m In the range of 620m~570m) geological radar scan image illustrate, refer to Fig. 7 and Fig. 8, Fig. 7 is geological radar scanning The scanning feature figure of image.As can be seen from Figure 7：In the range of trend is 620m~597m, vertical 0~150ns log lines scanning Characteristic pattern is without obvious stratiform, but with yellow, green, red and the interlaced distribution of blueness；It is preliminary to judge that coal seam is split in the range of this Gap development is abundant；Moving towards in the range of 597-570m, vertical 0~150ns log lines scanning figure color is shown based on reddish black Coal seam is more intact；In the range of whole trend, vertical 160~250ns ranging section characteristic pattern is in obvious green, blue bands Alternatively layered shape, illustrate that there is delamination failure in coal seam in the range of this.As can be seen from Figure 8：Overall waveform is in disorder, and interface is discontinuous； Move towards in the range of 620-600m that vertical 50~140ns ranging amplitude of wave form is larger, show larger electricity be present between the ambient substance Sex differernce；Vertical 160ns~250ns ranging waveform is unordered in a jumble in the range of whole trend, is overlapping.Obtained by the above Go out, the top plate of the tunnel section is moved towards in the range of 620-600m, and cracks in coal seam development thick about 10.0m is abundant above top plate, office Portion coal seam is broken more serious；Moved towards entirely in the range of 620m~570m, 11.0m~17.0m scope (thickness directly over top plate About 6.0m) in, coal seam delamination failure is obvious.Meanwhile the bottom plate of the tunnel section is moved towards in the range of 620m~608m, below bottom plate Cracks in coal seam development thick about 10.0m is abundant, and it is break up coal to move towards about 3.5m high seams below 608m~570m scopes inner bottom plating Layer；The coal seam of the other scopes of bottom plate is more intact, is destroyed without obvious.

In addition, the tunnel section is moved towards in the range of 570m~580m, side internal coal seam in south is broken more serious, whole Move towards broken serious away from south side wall 12.0m~17.0m scopes (thickness about 8.0m) deep fractures in gamut.The tunnel section Move towards in the range of 590m~620m, it is broken more away from the internal coal seam of north side wall 14.0m~20.0m scopes (thickness about 6.0m) Seriously.

Thus, the result of detection of geologic radar detection instrument 5 is as follows：Top plate relaxation zone is 1.0m, vertical depth 1.0m~3.0m models It is elastic region to enclose for plastic zone, vertical depth 3.0m~6.5m scopes, and 6.5m region below is initial stress area.North side relaxation zone be 1.5m, vertical depth 1.5m~4.0m scope are plastic zone, and vertical 4.0m~7.5m scopes are that elastic region, 7.5m or so region below is Initial stress area.Side relaxation zone in south is 1.5m, and vertical depth 1.5m~3.0m scopes are plastic zone, and 3.0m~5.0m scopes are tunnel rock Body crushes elastic region, more complete in vertical below 5.0m strata structures, 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 collect and comprehensive analysis.Wherein, the relaxation zone test of relaxation zone tester 4 completes 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 demonstrated The result of relaxation zone tester 4, last geology radar detector 5 are carried out to back, bottom plate and the left and right sides tunnel side Comprehensive seamless scanning, accordingly draw the surrounding rock stability of the tunnel section 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, it 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, the crack to being tested the inwall of test boring 1 Development degree is tested, and can judge whether the inwall of drilling 2 has damage and phenomenon of caving in, while on the inwall of drilling 2 Caused crack carries out related coal and rock force-bearing situation analysis；Secondly, relaxation zone tester 4 is used to centered on 2 drillings The aeration level of roadway surrounding rock is tested in certain limit；Finally, using geologic radar detection instrument 5 to back, bottom plate Comprehensive seamless scanning is carried out with both 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, support is provided for follow-up 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 the tunneling boring and total 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 the Accurate Prediction forecast coal and rock of coal mine down-hole tunnel 1 preservation situation.On the whole, it is first First pass through the development degree that inspection instrument for borehole 3 discloses roadway surrounding rock borehole wall crack；Secondly, visited by relaxation zone tester 4 The development scope that roadway surrounding rock crack is surveyed to drill centered on 2, i.e. relaxation zone radius；Finally, 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 Enclose, long range seamless integration detection.

It is described above, only it is presently preferred embodiments of the present invention, not the present invention is imposed any restrictions, it is every according to the present invention Any simple modification, change and the equivalent structure change that technical spirit is made to above example, still fall within skill of the present invention In the protection domain of art scheme.

Claims (8)

1. a kind of improving stability of surrounding rocks in roadway joint test method, the test device that this method uses includes control main frame (6), to coal The drilling that the wall-rock crack development degree of drilling (2) inwall drilled through is tested is helped in ore deposit underworkings (1) top plate or tunnel Endoscope (3), the relaxation zone tester (4) of relaxation zone test is carried out and to coal mine down-hole tunnel (1) to drilling (2) the week side of boss country rock The geologic radar detection instrument (5) that the adjoining rock stability situation of top plate or tunnel side is tested, the inspection instrument for borehole (3), loosens Circle tester (4) and geologic radar detection instrument (5) connect with control main frame (6)；Also include translating trolleys (7) and installed in flat Move on dolly (7) and length-adjustable telescopic arm (8), the inspection instrument for borehole (3) and relaxation zone tester (4) are installed in and stretched On contracting arm (8)；The translating trolleys (7) include horizontal frame and multiple road wheels installed in the horizontal frame bottom, institute State geologic radar detection instrument (5) and control main frame (6) is installed in the horizontal frame, the geologic radar detection instrument (5) Installed in the back side top of the horizontal frame；It is characterized in that：Along tunnel Longitudinal extending direction, divide multiple tunnels from the front to the back Section carries out surrounding rock stability joint test, the surrounding rock stability joint of multiple tunnel sections to coal mine down-hole tunnel (1) Method of testing all same；When carrying out surrounding rock stability joint test for any one tunnel section, comprise the following steps：

Step 1: drilling：Multigroup drilling (2) is drilled through in tested tunnel section by rig, multigroup drilling (2) is by rear Lay forward；Drilling (2) described in every group includes three drillings (2), and three drillings (2) are respectively one and are laid in colliery 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 Drill (2)；

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

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

Step 2011, drilling are spied on：The image information of tested test boring (2) inwall is obtained by inspection instrument for borehole (3), and will be obtained The image information taken is uploaded to control main frame (6) and synchronizes display and record；The image shown according to control main frame (6) is believed Breath, the wall-rock crack development degree for being tested test boring (2) inwall is judged；

Step 2012, wall rock loosening test：Relaxation zone test is carried out to tested test boring (2) using relaxation zone tester (4), and Relaxation zone test result is uploaded to control main frame (6) and synchronizes display and record；The loosening shown according to control main frame (6) Test result is enclosed, the loosening area of surrounding rocks for being tested test boring (2) the week side of boss country rock is judged, completes tested test boring (2) Single hole test 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 the inwall wall-rock crack development degree and the week side of boss of the drilling (2) The loosening area of surrounding rocks of country rock；

Step 2013, step 2011 is repeated several times to step 2012, until completing all drillings (2) on tested tunnel section 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), from the front to the back to tested tunnel section Top plate, bottom plate and the left and right sides tunnel side of section carry out full section scanning respectively, and scanning result is uploaded into control main frame (6) Synchronize display and record；The scanning result shown according to control main frame (6), top plate, bottom plate to being tested tunnel section Judged with the adjoining rock stability situation of left and right sides tunnel side, and top plate, 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 section Detection process, and the geologic radar detection result to being tested tunnel section records；

The geologic radar detection result of the tested tunnel section includes top plate, bottom plate and the left and right sides lane of the tunnel section The adjoining rock stability situation of road side, the position and structure with the presence or absence of empty (14) and existing empty (14)；

Step 3: comprehensive analysis and judgement：Knot is tested with reference to the single hole that all drillings (2) in the section of tunnel are tested in step 201 The geologic radar detection result of tested tunnel section is drawn in fruit and step 202, the adjoining rock stability to being tested tunnel section Property be determined, complete the surrounding rock stability joint test process of tested tunnel section；

Step 4: according to step 1 to the method described in step 3, surrounding rock stability joint is carried out to next tunnel section 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).

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

3. according to the improving stability of surrounding rocks in roadway joint test method described in claim 1, it is characterised in that：Also 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 arranged on translation track (9), and telescopic arm (8) bottom is arranged on slip base (10)；The translation track (9) 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 In the horizontal rail on the horizontal frame top and two respectively positioned at the vertical track of horizontal rail left and right sides lower section It is formed by connecting, the horizontal rail and two vertical tracks are laid on same vertical plane.

4. according to the improving stability of surrounding rocks in roadway joint test method described in claim 3, it is characterised in that：The telescopic arm (8) It is attached in hinged way between bottom and slip base (10), is equipped with the slip base (10) and pacifies for telescopic arm (8) bottom The hinged seat (11) of dress；It is provided with 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 is arranged on telescopic arm (8) in hinged way；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 expansion link (8-1), the inspection instrument for borehole (3) It is installed in relaxation zone tester (4) on expansion link (8-1).

5. in accordance with the method for claim 1, it is characterised in that：When carrying out drilling in step 2011 and spying on, first drilling is peeped Depending on instrument (3) bottom hole, then the bottom hole by inspection instrument for borehole (3) from tested test boring (2) are moved to from the aperture of tested test boring (2) It is moved to aperture；In inspection instrument for borehole (3) moving process, the synchronous figure for obtaining tested test boring (2) inwall position As information；When judging the wall-rock crack development degree for being tested test boring (2) inwall, according to tested test boring (2) inwall The image information of position, to being tested the rock crusher situation of test boring (2) inwall position and with the presence or absence of crack Quantity, position, width, bearing of trend and length with existing crack are judged.

6. according to the method described in claim 1 or 5, it is characterised in that：When single hole test is carried out in step 201, according to drilling (2) installation position, single hole test is carried out respectively to multigroup drilling (2) from the front to the back；Treat to drill (2) described in one group After three drillings (2) complete single hole test, then to (2) progress single hole test that drilled described in next group；Brill 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 that all drillings (2) on tested tunnel section are completed in step 201, tested tunnel is obtained Surrounding rock stability subregion test result on section at multiple diverse locations；

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

When comprehensive analysis and judgement are carried out in step 3, according to the surrounding rock stability of the tested tunnel section drawn in step 202 Integrated testability result, and combine the surrounding rock stability on the tested tunnel section drawn in step 201 at multiple diverse locations Subregion test result, the surrounding rock stability for being tested tunnel section is determined.

7. in accordance with the method for claim 6, it is characterised in that：The inspection instrument for borehole (3) and relaxation zone tester (4) are equal On length-adjustable telescopic arm (8), the telescopic arm (8) is arranged on translating trolleys (7)；The translating trolleys (7) Multiple road wheels including horizontal frame and installed in the horizontal frame bottom, the geologic radar detection instrument (5) and control Main frame (6) is installed in the horizontal frame, and the geologic radar detection instrument (5) is arranged on the rear side of the horizontal frame Side；

The horizontal frame installed in front has a translation track (9), and one is provided with the translation track (9) can be along translation The movable slip base (10) of track (9), telescopic arm (8) bottom are arranged on slip base (10)；The translation track (9) laid along the transverse width direction of the horizontal frame and its cross section is undercut shape, the translation track (9) is by one Positioned at the horizontal rail on the horizontal frame top and two respectively positioned at the vertical rail of horizontal rail left and right sides lower section Road is formed by connecting, and the horizontal rail and two vertical tracks are laid on same vertical plane；Telescopic arm (8) bottom It is attached in hinged way between portion and slip base (10), is equipped with the slip base (10) and is installed for telescopic arm (8) bottom Hinged seat (11)；It is provided with the slip base (10) and the angle between telescopic arm (8) and slip base (10) is adjusted Adjustment structure, the adjustment structure is hydraulic cylinder (12), and the cylinder base of the hydraulic cylinder (12) is arranged in hinged way On slip base (10) and its piston rod top is arranged on telescopic arm (8) in hinged way；The telescopic arm (8) includes expansion link The extension sleeve (8-2) of (8-1) and multiple coaxial packages from the inside to the outside on expansion link (8-1), the inspection instrument for borehole (3) and Relaxation zone tester (4) is installed on expansion link (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, promote translating trolleys (7) along tested tunnel section from the front to the back It is mobile, when the translating trolleys (7) are moved to drilling (2) installation position described in one group, pass through mobile on translation track (9) slide Seat (10) is moved to be adjusted the position of telescopic arm (8), and to three drillings (2) in the group drilling (2) respectively 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, telescopic arm (8) is recycled to move inspection instrument for borehole (3) and relaxation zone tester (4) from the aperture of tested test boring (2) Aperture is moved to from the bottom hole of tested test boring (2) to bottom hole, then by inspection instrument for borehole (3) and relaxation zone tester (4), it is just complete Into the single hole test process of a drilling (2)；Also, the translating trolleys (7) are moved from the front to the back in tested tunnel section During dynamic, by geologic radar detection instrument (5) from the front to the back to top plate, bottom plate and the left and right sides lane of tested tunnel section Road side is scanned.

8. according to the method described in claim 1 or 5, it is characterised in that：The length of the tunnel section 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 front and rear two adjacent groups is 2m~8m.