CN103293023B - Original state sampling method for constructed fractured rock mass - Google Patents
Original state sampling method for constructed fractured rock mass Download PDFInfo
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- CN103293023B CN103293023B CN201310242429.7A CN201310242429A CN103293023B CN 103293023 B CN103293023 B CN 103293023B CN 201310242429 A CN201310242429 A CN 201310242429A CN 103293023 B CN103293023 B CN 103293023B
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Abstract
The invention relates to an original state sampling method for constructed fractured rock mass, which aims at solving the technical problems that the original state structure of the constructed fractured rock mass is easily damaged under disturbance of the conventional sampling appliance, and the representative sample required by indoor research of a microstructure for a key geological structure is difficult to acquire. According to the technical scheme, the method comprises the following steps: a. drilling an observation hole in a shallow surface layer on which a rock sample to be sampled is positioned by using a drilling machine; b. putting positioning and imaging equipment in the observation hole for acquiring the geological structure position and physical characteristic information of the hole wall gap in the observation hole; c. positioning and plugging hole sections with complete rock mass or containing sparse fractures only in the observation hole by employing the plugging guide equipment according to information in the step b; d. injecting the epoxy resin curing agent glue solution into a reserved section in the observation hole, so as to inject the glue solution to the preset position along the dense fractures or fractured gaps of the reserved section under impact of high-pressure gas; e. reaming or continuously drilling the indoor analytical rock samples after the glue solution wholly reaches the bonding strength.
Description
Technical field
The present invention relates to original state sampling method in a kind of structure fragmented rock body, a kind of for obtaining the necessary representative original state sample of crucial tectonic structure microscopical structure desk research, this kind of sample is the positive evidence that regional tectonics develops, be generally scholars to be concerned about the most, but adopt the more difficult acquisition of conventional trephination.The present invention is particularly useful for structure Evolution Mechanism and the area interstitial flow rule sample analysis of the Tectonic Rock Mass degree of crushing higher part position such as zone of fracture, joint fissure compact district.
Background technology
The inner geology structural plane of rock mass and each rank rift structure control mechanics, the hydraulic characteristic of region rock mass to a great extent, thus degree of the going deep into direct determining area rock stability of this type of study on geological tectonics and infiltrative progress.But the higher rock mass of degree of crushing because of its structural stability poor, under the high vibration of routine sampling utensil, geologic body original state structure very easily wrecks, meso-mechanical analyses necessary representative sample in laboratory is caused to be difficult to obtain, therefore, how efficiently to obtain the representative sample comprising tectonic structure original state structure easily from scene, carrying out specific aim desk research in a deep going way is put the difficult problem urgently broken through in face of scientific research personnel, is also the key link promoting Tectonic Rock Mass Evolution Mechanism and the development of area interstitial flow law study.
Summary of the invention
Technical matters to be solved by this invention is: very easily wreck for structure fragmented rock body original state structure under the disturbance of existing routine sampling utensil, and the necessary representative sample of crucial tectonic structure microscopical structure desk research is difficult to the difficult problem obtained.The invention provides a kind of at a kind of effective ways of the convenient acquisitions in rock mass degree of crushing higher part position such as zone of fracture, joint fissure compact district for original state rock sample needed for indoor meso-scopic structure analysis.
The technical scheme that the present invention takes is:
1. construct a fragmented rock body original state sampling method, it is characterized in that, comprise the steps:
A, shallow surface at place to be bored sample, drill through viewport with rig;
B, in viewport, put into positioning and imaging equipment for obtaining viewport tectonic structure position and hole wall space physical characteristic information;
C, obtain tectonic structure position and hole wall space physical characteristic information according to positioning and imaging equipment in step b, take that rock mass in shutoff diversing flow system positioning plugging viewport is complete or only containing the hole section in sparse crack, the rock crushing section at reserved tectonic structure place or crack condensed section are as reserved section;
D, epoxy curing agent glue is injected reserved section in viewport, make epoxy curing agent glue under gases at high pressure impact along the reserved intensive crack of section or broken space note to predeterminated position;
E, after epoxy curing agent glue entirety reaches consolidation strength, just reaming or continuous hole drill can get in office analysis rock sample sample.
Viewport aperture in described step a is 5-10cm, and the degree of depth is 40-50cm.
Tectonic structure position and hole wall space physical characteristic information is obtained according to positioning and imaging equipment in step b in described step c, when the fractured zones of viewport hole wall is intensive, tectonic structure focuses mostly in hole wall, fractured zones at the bottom of viewport hole more sparse and closed tightr time, to adopt at the bottom of shutoff diversing flow system shutoff viewport hole shutoff aperture simultaneously.
Rig is adopted to carry out counterboring to viewport in described step e, the in office analysis rock sample sample in extraction hole; Counterboring aperture is 3-3.5 times of observation aperture, and counterboring hole depth is 40-50cm.
Tectonic structure position and hole wall space physical characteristic information is obtained according to positioning and imaging equipment in step b in described step c, fractured zones at the bottom of viewport hole is intensive, tectonic structure focuses mostly at the bottom of hole, when viewport hole wall fractured zones is more sparse, adopt shutoff diversing flow system shutoff viewport hole wall shutoff aperture simultaneously.
Rig is adopted to carry out continuous boring to viewport, the in office analysis rock sample sample in extraction hole in described step e; Continuous boring aperture equals viewport aperture, and the hole depth of continuous boring is about 30-40cm.
Positioning and imaging equipment comprises guide pole, scale, reflective mirror, data line and signal processor; Data line is fixing on the guide bar, and reflective mirror is fixing on the guide bar, and scale and guide pole stretch in measured hole, and a termination of data line is provided with camera, and the other end is connected with signal processor.
Shutoff diversing flow system comprises at least one the harmomegathus gas bag unit be arranged in series and baffle; Harmomegathus gas bag unit and baffle are installed in be needed in the viewport of shutoff now; Described harmomegathus gas bag unit comprises harmomegathus air bag, pneumatic tube, feed tube, gas-filled tube, guide cone and baroceptor; Pneumatic tube, feed tube are run through harmomegathus air bag and are connected by sealing fastener with harmomegathus air bag, and gas-filled tube stretches in harmomegathus air bag and by connecting link and harmomegathus airbags, baroceptor is contained in the end of feed tube, and guide cone is contained in the lower end of harmomegathus air bag; Described baffle is rubber cushion blocks or cover film.
Beneficial effect
The present invention is compared with prior art: 1, this trephination of the present invention has definition and high efficiency.By positioning and imaging equipment when verifying that in viewport, tectonic structure body truly distributes in advance, researcher can save the critical samples that plenty of time and material resources are directly used corresponding water conservancy diversion method for blocking injecting glue to drill through research institute to need.Avoid the blindness repeated work of routine sampling, this is the high-level efficiency place of this method sampling.2, this sampling method is pointed, direct.Can effective acquisition desk research required and conventional method the is more difficult to get crucial geology that comprises is configured in the higher rock sample of interior degree of fragmentation, this kind of sample is the positive evidence that regional tectonics develops, and scientific research personnel is concerned about the most.3, this sampling method has dirigibility, simplicity.Can needed for scientific research personnel, scene arbitrarily drills through the large multiple location sample of rock mass, overcomes the puzzlement of the numerous external factor such as terrain, rock mass completeness suffered by large type drill sampling in the past to a great extent.3, the inventive method is equipped with bore inner positioning and imaging equipment, can intuitively to present in hole meet tectonic structure physical features (crack quantity, position, occurrence, opening width etc.) information, eliminating glue plugging device installs the interference that blindness is brought, and realizes effective water conservancy diversion object; 4, hardening agent glue injects fragmented rock body space through pressurized equipment high pressure, helps it and diffuses to space end and realize intersection connection consolidation, significantly strengthen the overall consolidation effect of structure; Aperture adopts can harmomegathus air bag, and application conditions does not limit by bore size, greatly expands the scope of application of this plugging device, and shutoff pressure changes flexibly with percussive pressure in hole, not only strengthens sealing effectiveness but also facilitate dismounting to reuse.In addition, be convenient to manual control pressurized equipment by the crack occurrence of positioning and imaging equipment gained, opening width information and apply suitable injection pressure.
Accompanying drawing explanation
Fig. 1 is hole of the present invention inner position imaging device arrangenent diagram.
Fig. 2 is plugging device wiring layout of the present invention.
Fig. 3 is shutoff of the present invention pressurization complete layout.
Fig. 4 is that reaming of the present invention drills through got original state sample schematic three dimensional views.
Fig. 5 is that the present invention continues hole drill and gets got original state sample schematic three dimensional views.
Embodiment
For making content of the present invention more become apparent, be further described below in conjunction with accompanying drawing 1-accompanying drawing 5 and embodiment.
The present invention solves puzzled experimental study personnel structure fragmented rock body original state structure under the disturbance of existing routine sampling utensil for many years very easily to wreck, and the necessary representative sample of crucial tectonic structure microscopical structure desk research is difficult to the difficult problem obtained.There is provided a kind of effective means especially to the structure Evolution Mechanism of the rock mass degree of crushing higher part position such as zone of fracture, joint fissure compact district and area interstitial flow rule sample analysis.The tectonic structure body original state structure scene realizing comprising various genetic type drills through, and makes the desk research of tektonite internal nature mechanism and rule become possibility.
Structure fragmented rock body original state sampling method of the present invention, comprises the steps:
1. construct a fragmented rock body original state sampling method, it is characterized in that, comprise the steps:
A, shallow surface at place to be bored sample, drill through viewport with rig; Institute's brill viewport moral aperture is 5-10cm, and hole depth is about 40-50cm;
B, in viewport, put into positioning and imaging equipment for obtaining viewport tectonic structure position and hole wall space physical property (opening width, stuff etc.) information;
C, obtain tectonic structure position and hole wall space physical characteristic information according to positioning and imaging equipment in step b, take that rock mass in shutoff diversing flow system positioning plugging viewport is complete or only containing the hole section in sparse crack, the rock crushing section at reserved tectonic structure place or crack condensed section are as reserved section;
D, epoxy curing agent glue is injected reserved section in viewport, make epoxy curing agent glue under the gases at high pressure that pressurized equipment provides impact along the reserved intensive crack of section or broken space note to predeterminated position;
E, after epoxy curing agent glue entirety reaches consolidation strength, just reaming or continuous hole drill can get in office analysis rock sample sample.
The rig that the boring of the present invention in step a and step e, reaming or continuous hole adopt is portable drill of the prior art, and its concrete structure the present invention be not described in detail.
The positioning and imaging equipment that the present invention is adopted in stepb, its this noun of positioning and imaging equipment is self-defined noun, as its name suggests, its major function be in viewport meet tectonic structure body physical message and intuitively show and locate, the follow-up shutoff diversing flow system of accurate instruction has object to install to control with the specific aim of injection pressure.
Positioning and imaging equipment of the present invention comprises guide pole 1, scale 2, reflective mirror 3, data line 4 and signal processor 5; As shown in Figure 1.
Data line 4 is bundled on guide pole 1 by band, does not affect the Signal transmissions in data line 4 in binding.Reflective mirror 3 is fixed on a termination of guide pole 1, extend in measured hole together with guide pole 1; Scale 2 and guide pole 1 stretch in measured hole, and a termination of data line 4 is provided with camera 6, and the other end is connected with signal processor 5.
Guide pole 1 described in positioning and imaging equipment of the present invention can adopt expansion link or folding rod.Guide pole 1 adopts expansion link or folding rod can better be applicable to the detection of different depth viewport, expands its range of application and recycling rate of waterused, is convenient to be convenient for carrying simultaneously, reduces working space, the scope of application is larger.
Reflective mirror 3 described in positioning and imaging equipment of the present invention is reflective mirror of the prior art, and its ovalize, reflective mirror 3 is connected with guide pole end.Major function: with in guide pole 360 degree of rotary courses, in hole wall surrounding crack all can being mapped into, getting rid of camera lighting dead angle, is convenient to full spectrum information in acquisition pores.
Scale 2 described in positioning and imaging equipment of the present invention can adopt the Steel Ruler with size of the prior art.
Signal processor 5 described in positioning and imaging equipment of the present invention can adopt notebook of the prior art or microprocessor, and the present invention is for the ease of carrying, and the present invention preferentially adopts notebook.
Shutoff diversing flow system described in step c of the present invention comprises at least one harmomegathus gas bag unit and baffle 14; Harmomegathus gas bag unit and baffle are installed in be needed in the viewport of shutoff now; Described harmomegathus gas bag unit comprises harmomegathus air bag 7, pneumatic tube 8, feed tube 9, gas-filled tube 10, guide cone 13 and baroceptor 12; As shown in Figure 2.
Pneumatic tube 8, feed tube 9 are run through harmomegathus air bag 7 and are connected by sealing fastener with harmomegathus air bag 7, gas-filled tube 10 to be stretched in harmomegathus air bag 7 and is connected with harmomegathus air bag 7 by connecting link 11, baroceptor 12 is contained in the end of feed tube 9, and guide cone 13 is contained in the lower end of harmomegathus air bag 7; Described baffle 14 is rubber cushion blocks or cover film.
The pressurization of epoxy curing agent glue to be injected in viewport the section of interspacing in advance in steps d of the present invention, make slurries under gases at high pressure impact along the reserved intensive crack of section or broken space note to precalculated position.The pressurization of epoxy curing agent glue to be injected in aperture the section of interspacing in advance described in this step, described pressurized equipment adopts pressurized equipment of the prior art, and its concrete structure the present invention be not described in detail.
Tectonic structure position and hole wall space physical property (opening width, stuff etc.) information in viewport is obtained according to step b mesopore inner position imaging device described in step c of the present invention; Adopt rock mass in shutoff diversing flow system shutoff viewport complete or only containing the hole section in sparse crack, the rock crushing section at reserved tectonic structure place or crack condensed section as reserved section in order to injecting glue.
When the fractured zones of viewport hole wall is intensive, tectonic structure focuses mostly in hole wall, fractured zones at the bottom of viewport hole more sparse and closed tightr time, adopt at the bottom of rubber cushion blocks plugging hole, harmomegathus air bag shutoff aperture.With rig, reaming is carried out to viewport, the cementing fixing rock sample of epoxy curing agent in extraction hole; Reaming aperture is 3-3.5 times of observation aperture, and reaming hole depth is 40-50cm.Enumerate a specific embodiment to be below described in detail.
Embodiment 1:
Fractured zones at the bottom of viewport hole more sparse and closed tightr time, adopt at the bottom of rubber cushion blocks plugging hole, the aperture of harmomegathus air bag shutoff viewport.
Concrete operation steps is harmomegathus air bag shutoff viewport aperture in employing hole, rubber cushion blocks seals at the bottom of the hole of viewport, brill is executed in the reaming of high pressure sidewall injecting glue.
The first step, enough can grind architectonic appropriate site by rock crushing degree to be got and geology topographic condition selected comprising, and adopt rig to drill through diameter at shallow surface and be about 6cm, highly be the rock pillar of 45cm, taking-up rock pillar, reserves diameter 6cm aperture, second step, scan with hole inner position imaging device complete opening perisporium, realize the accurate location of all space sections of concentrating in hole and rock mass integrity degree upper sector, the effective location having helped harmomegathus air bag and rubber cushion blocks is installed, guarantee that the crucial geology tectosome enjoying researcher to be concerned about in rock mass to be got is contained in the reserved section of viewport to greatest extent, make plugging device conscientiously play the object of specific aim water conservancy diversion, 3rd step, treat that shutoff diversing flow system i.e. two plug installs, connect harmomegathus air bag respective line to pressurized equipment, gasbag pressure switch is opened after detecting each pipeline compact siro spinning technology, regulate and monitoring parameters, epoxy curing agent glue is made to inject in viewport hole wall rock mass along perisporium space, hole under the impacting with high pressure that pressurized equipment provides, operating personnel according to the baroceptor 12 measurement and monitoring real-time pressure value be installed in viewport hole to regulate and control surge pressure in time, ensure that epoxy curing agent glue arrives each space end or realize glue between intersection crack through as far as possible, 4th step, adjusts and reduce the harmomegathus pressure valve on pressurized equipment after the initial set of epoxy curing agent glue, slowly shrinks air bag and removal plugging device, 5th step, adopts rig after epoxy curing agent glue entirety reaches consolidation strength, and be replaced by the reaming of 20cm diameter drill bit drill through comprise complete crucial geology tectosome in office analysis needed for sample.As shown in Figure 3,4.
Tectonic structure position and hole wall space physical property (opening width, stuff etc.) information in viewport is obtained according to step b mesopore inner position imaging device described in step c of the present invention; Adopt rock mass in shutoff diversing flow system shutoff viewport complete or only containing the hole section in sparse crack, the rock crushing section at reserved tectonic structure place or crack condensed section as reserved section in order to injecting glue.
Fractured zones at the bottom of viewport hole is intensive, tectonic structure focuses mostly at the bottom of hole, when viewport hole wall hole wall fractured zones is more sparse, adopts plastic sheeting to be close to shutoff hole wall, harmomegathus air bag shutoff aperture.Rig is adopted to carry out continuous boring to viewport, the in office analysis rock sample sample in extraction hole; Continuous boring aperture equals viewport aperture, and the hole depth of continuous boring is about 30-40cm.Enumerate a specific embodiment to be below described in detail.
Embodiment 2:
Fractured zones at the bottom of viewport hole is intensive, tectonic structure focuses mostly at the bottom of hole, and viewport hole wall hole wall fractured zones is more sparse.Plastic sheeting is adopted to be close to shutoff hole wall, harmomegathus air bag shutoff aperture.
Concrete operation steps adopts aperture harmomegathus air bag shutoff, hole wall employing covered rearing with plastic film, pressure hole rising pouring glue to continue hole and execute brill.
The first step, enough can grind architectonic appropriate site by rock crushing degree to be got and geology topographic condition selected comprising, adopt rig shallow surface drill through diameter be about 8cm, highly be 45 rock pillar, taking-up rock pillar, reserves diameter 8cm viewport, second step, scan with hole inner position imaging device complete opening wall, realize the accurate location of all space sections of concentrating in hole and rock mass integrity degree upper sector, having helped plastic sheeting concentrates the emphasis at position to cover to hole week space, stop sidewall seepage to greatest extent and then guarantee that glue effectively injects bottom tectonic structure body region to be got along space at the bottom of hole, making harmomegathus air bag plugging device conscientiously play the object of specific aim water conservancy diversion, 3rd step, treat this kind of shutoff diversing flow system and harmomegathus air bag, plastic sheeting is installed complete, connect harmomegathus air bag respective line to pressurized equipment, gasbag pressure switch is opened after detecting each pipeline compact siro spinning technology, regulate and monitoring parameters, make epoxy curing agent glue under impacting with high pressure along injection bottom, space Guan Yanti at the bottom of hole, operating personnel according to the baroceptor 12 measurement and monitoring real-time pressure value be installed in viewport to regulate surge pressure in time, ensure that epoxy curing agent glue arrives each space end or realize glue between intersection crack through as far as possible, 4th step, adjusts and reduce the harmomegathus pressure valve on pressurized equipment after the initial set of epoxy curing agent glue, slowly shrinks air bag and removal plugging device, 5th step, after epoxy curing agent glue entirety reaches consolidation strength, adopt rig and adopt same diameter drill bit to stretch in viewport deeply to drill through comprise complete crucial geology tectosome in office analysis needed for sample.As shown in Fig. 3,5.
Part that the present invention does not relate to is all same as the prior art or adopt prior art to be realized.
Claims (7)
1. construct a fragmented rock body original state sampling method, it is characterized in that, comprise the steps:
A, shallow surface at place to be bored sample, drill through viewport with rig;
B, in viewport, put into positioning and imaging equipment for obtaining viewport tectonic structure position and hole wall space physical characteristic information;
C, obtain tectonic structure position and hole wall space physical characteristic information according to positioning and imaging equipment in step b, take that rock mass in shutoff diversing flow system positioning plugging viewport is complete or only containing the hole section in sparse crack, the rock crushing section at reserved tectonic structure place or crack condensed section are as reserved section; Described shutoff diversing flow system comprises at least one harmomegathus gas bag unit be arranged in series and baffle (14); Harmomegathus gas bag unit and baffle are installed in be needed in the viewport of shutoff now; Described harmomegathus gas bag unit comprises harmomegathus air bag (7), pneumatic tube (8), feed tube (9), gas-filled tube (10), guide cone (13) and baroceptor (12); Pneumatic tube (8), feed tube (9) are run through harmomegathus air bag (7) and are connected by sealing fastener with harmomegathus air bag (7), gas-filled tube (10) to be stretched in harmomegathus air bag (7) and is connected with harmomegathus air bag (7) by connecting link (11), baroceptor (12) is contained in the end of feed tube (9), and guide cone (13) is contained in the lower end of harmomegathus air bag (7); Described baffle (14) is rubber cushion blocks or cover film;
D, epoxy curing agent glue is injected reserved section in viewport, make epoxy curing agent glue under gases at high pressure impact along the reserved intensive crack of section or broken space note to predeterminated position;
E, after epoxy curing agent glue entirety reaches consolidation strength, just reaming or continuous hole drill can get in office analysis rock sample sample.
2. structure fragmented rock body original state sampling method as claimed in claim 1, it is characterized in that, the viewport aperture in described step a is 5-10cm, and the degree of depth is 40-50cm.
3. structure fragmented rock body original state sampling method as claimed in claim 1, it is characterized in that, tectonic structure position and hole wall space physical characteristic information is obtained according to positioning and imaging equipment in step b in described step c, when the fractured zones of viewport hole wall is intensive, tectonic structure focuses mostly in hole wall, fractured zones at the bottom of viewport hole more sparse and closed tightr time, to adopt at the bottom of shutoff diversing flow system shutoff viewport hole shutoff aperture simultaneously.
4. structure fragmented rock body original state sampling method as claimed in claim 3, is characterized in that, adopt rig to carry out counterboring to viewport in described step e, the in office analysis rock sample sample in extraction hole; Counterboring aperture is 3-3.5 times of observation aperture, and counterboring hole depth is 40-50cm.
5. structure fragmented rock body original state sampling method as claimed in claim 1, it is characterized in that, tectonic structure position and hole wall space physical characteristic information is obtained according to positioning and imaging equipment in step b in described step c, fractured zones at the bottom of viewport hole is intensive, tectonic structure focuses mostly at the bottom of hole, when viewport hole wall hole wall fractured zones is more sparse, adopt shutoff diversing flow system shutoff viewport hole wall shutoff aperture simultaneously.
6. structure fragmented rock body original state sampling method as claimed in claim 5, is characterized in that, adopt rig to carry out continuous boring to viewport, the in office analysis rock sample sample in extraction hole in described step e; Continuous boring aperture equals viewport aperture, and the hole depth of continuous boring is about 30-40cm.
7. structure fragmented rock body original state sampling method as claimed in claim 1, it is characterized in that, described positioning and imaging equipment comprises guide pole (1), scale (2), reflective mirror (3), data line (4) and signal processor (5); Data line (4) is fixed on guide pole (1), reflective mirror (3) is fixed on guide pole (1), scale (2) and guide pole (1) stretch in measured hole, one termination of data line (4) is provided with camera (6), and the other end is connected with signal processor (5).
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| CN103528852B (en) * | 2013-10-31 | 2015-07-08 | 南京大学 | Undisturbed sampling method capable of effectively preventing coarse-grained soil from leaking through side wall |
| CN104265219B (en) * | 2014-09-19 | 2016-10-19 | 中国矿业大学 | A kind of core original state structure recognition means and method |
| CN106611077A (en) * | 2016-07-04 | 2017-05-03 | 中国矿业大学 | Quantitative processing method of coal rock mass fractures |
| CN105928764B (en) * | 2016-07-06 | 2019-01-18 | 西南交通大学 | Irregular original state crack rock side wall injecting glue anti-seepage method |
| CN109115545B (en) * | 2018-08-03 | 2021-04-02 | 邹城兖矿泰德工贸有限公司 | Geological casing |
| CN109141957B (en) * | 2018-08-13 | 2020-08-18 | 中国科学院南京土壤研究所 | Method for collecting and manufacturing undisturbed monolith with 1 m sandy soil |
| CN109060417B (en) * | 2018-10-22 | 2021-06-08 | 长安大学 | Undisturbed coarse-grained soil sampling method |
| CN109632369A (en) * | 2018-12-10 | 2019-04-16 | 中国电建集团华东勘测设计研究院有限公司 | Prismatical joint basalt original state core preparation method |
| CN110068478B (en) * | 2019-05-13 | 2020-01-03 | 长安大学 | Exploratory well sampling method based on undisturbed soil exploratory well sampling robot |
| CN110702478B (en) * | 2019-10-11 | 2021-12-21 | 自然资源实物地质资料中心 | Method for collecting precious and fragile stratum specimen |
| CN110887716B (en) * | 2019-12-26 | 2022-10-25 | 聂德新 | In-situ test method for deformation and strength parameters of fractured and overhead rock mass |
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