CN201786300U - Open-close type static pressure sampler for bedding fault zone soft rock in cavern - Google Patents
Open-close type static pressure sampler for bedding fault zone soft rock in cavern Download PDFInfo
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- CN201786300U CN201786300U CN2010202773976U CN201020277397U CN201786300U CN 201786300 U CN201786300 U CN 201786300U CN 2010202773976 U CN2010202773976 U CN 2010202773976U CN 201020277397 U CN201020277397 U CN 201020277397U CN 201786300 U CN201786300 U CN 201786300U
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Abstract
The utility model discloses a static pressure sampler for bedding fault zone soft rock in cavern, and particularly relates to a static pressure in situ sampling device for thin bedding fault zone soft rock mass in hard rock formation in the field of subterranean tunnel or cavern of geotechnical engineering, and is used for reducing or avoiding the disturbance and damage to the soft rock mass by sampling operation. The sampler comprise a front end edge boot (1), a right semicircular sample bucket (3) with a force transmission lug (2), a left semicircular sample bucket (8) with another force transmission lug (2), a pressure cap hood (5), a fixing bolt (4), a fixing bolt (9), a pin (7), a connecting bolt (6), a front end force transmission column (11), a hydraulic jack (12) and a rear end supporting column (13). The sampler can obtain the sample of bedding fault zone soft rock for lab study in high terrestrial stress environment without excavation or rotation.
Description
Technical field
The utility model discloses disturbed belt soft rock static pressure sampler in a kind of cavern, more specifically relate to a kind of static pressure type in-situ sampling device that is used for the weak rock mass of the thin disturbed belt of competent bed in geotechnical engineering subterranean tunnel or the field, cavern, be used to reduce and disturbance and the destruction of operation of avoiding taking a sample weak rock mass.
Background technology
Restricted by China's complex engineering geological conditions, great basic geotechnical engineering construction such as water power, traffic, the energy, national defence are as western hydroelectric development, the south water to north, oil/gas exploitation, strategic energy storage, radioactive waste and CO
2Underground seal, underground military project blindage engineering etc., all relate to and contain weak this special geology phenomenon of rock mass of thin disturbed belt in the ground consisting of hard rock.Because the shearing changing of the relative positions of its complexity is historical and extremely low mechanical strength, engineering practice and theory analysis show that all the weak rock mass of the disturbed belt in the hard rock (soft rock) is the controlled factor that influences underground construction safety.So disturbed belt soft rock mechanics property research is actually one of the difficult point of western numerous underground engineering constructions and key issue in the hard rock.Yet existing mechanical characteristic and Study on engineering properties about the weak rock mass of disturbed belt is also quite limited.
As a whole, in the hard rock thin layer disturbed belt soft rock sampling difficulty and sampling operation excessive to the soft rock disturbance be one of the key factor of restriction phase mechanical property research.This mainly be because: on the one hand the strong weak rock sample experimental study result of disturbance can't accurately reflect the original state characteristic of engineering site weakness rock sample truly in the laboratory; Field work condition on the other hand is simple and crude, and on-the-spot disturbed belt soft rock in situ test can't be accomplished also can not accomplish meticulous, thereby has limited the precision and the systematicness of soft rock rock mass in situ test.In fact, at present both at home and abroad relevant rock mass of having researched and developed or soil body sampler or device all are difficult to satisfy in the underground construction sampling requirement of thin layer disturbed belt soft rock in the hard rock:
(1) existing sampler is a certain specifically than the geotechnical body of homogeneous at taking the bigger hard rock of area, weak soil or a prose style free from parallelism etc. usually, can't satisfy this special compound rock stratum sampling condition of disturbed belt soft rock that thickness in the hard rock has only 10～20cm usually;
(2) existing sampler mostly is rotary drilling or impact is pressed into, thereby can't avoid rotary torsion and the impact force energetic disturbance to weak rock mass;
(3) existing sampler mostly is whole cylindrical structure, taking also needs by external force rock mass or soil body sample to be extruded from drum behind rock mass or the soil body sample, existence is to the secondary disturbance of sample, and minority two lobe formulas or breaking sampler or sample produced destructive disturbance, or can't bear the hoop extrusion stress;
These actual conditions of geostatic stress that have about 10MPa level when (4) existing sampler is not all considered disturbed belt in-situ sampling in the hard rock.
For this reason, weak disturbed belt sampler not only should fully take into account in the hard rock thin layer soft rock this special compound rock stratum heterogeneous body sampling condition of taking a sample in the ground consisting of hard rock, also should consider to take technical measures to reduce the disturbance of sampling operation as far as possible, and consider on structure design in the Test in Situ that stress is to the influence of sampler significantly weak disturbed belt.Therefore, develop the static pressure sampler of lamelliform disturbed belt soft rock in a kind of advanced person and the easy suitable ground consisting of hard rock, it is just very necessary to overcome in the on-the-spot hard rock thin layer disturbed belt soft rock sampling problem of difficult.
Summary of the invention
At above-mentioned existing problems, the purpose of this utility model is to provide a kind of opening-closing type disturbed belt soft rock static pressure sampler in the on-the-spot cavern that is used for.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
Opening-closing type disturbed belt soft rock static pressure sampler in the cavern, sampler is by the sample storehouse, hydraulic jack, back terminal support column is formed, the sample storehouse of sampler is by the front edge boots, the right semi-circle sample bucket, the left semicircle sample bucket, the pressure calotte constitutes, the front edge boots are annular hollow structure, front edge boots termination is provided with wedge shape annular cutting edge, pressure calotte bottom face is provided with Connection Block, on pressure calotte bottom face, also have and be convenient to the steam vent that sample storehouse internal gas is discharged, the vertical end face outer wall of right semi-circle sample bucket and left semicircle sample bucket interlocks respectively and is provided with intermeshing power transmission ear, have concentric holes on the power transmission ear, pin is inserted on the power transmission ear in the concentric holes versatilely, right semi-circle sample bucket and left semicircle sample bucket form round barrel shape, its two ends are set in front edge boots and the pressure calotte, the right semi-circle sample bucket is connected by set bolt with the front edge boots with the left semicircle sample bucket, the right semi-circle sample bucket is connected by set bolt with the pressure calotte with the left semicircle sample bucket, the front end force-transmitting pole is connected by connecting bolt on the Connection Block of pressure calotte bottom face, and the annular cutting edge diameter of front edge boots is consistent with the drum internal diameter that right semi-circle sample bucket and left semicircle sample bucket synthesize.
Owing to adopted technique scheme, the utility model has changed traditional power sampling mode, can apply axial static pressure by hydraulic jack, and by front end force-transmitting pole and pressure calotte transmitter shaft to static pressure, make the front edge boots clamp-on and the weak rock mass of disturbed belt in the hard rock separately, and right semi-circle sample bucket and the left semicircle sample bucket hinged by pin can bear the rock stratum geostatic stress to the normal pressure of sampler wall and the circumference stress expansion force of soft rock sample, can realize need not in the higher ground stress environment (about 10～20MPa geostatic stress) excavating or the rotation situation under obtain to be used for the disturbed belt soft rock sample of laboratory research.This apparatus structure rigidity is big, can reduce and avoid disturbance and the destruction of open-air sampling construction to weak rock mass sample effectively, realizes the moving sampling of perturbation of thin layer soft rock in the hard rock.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model;
Accompanying drawing 2: the A-A sectional drawing of opening-closing type disturbed belt soft rock static pressure sampler;
Accompanying drawing 3: the B-B sectional drawing of opening-closing type disturbed belt soft rock static pressure sampler.
Accompanying drawing 4: the C-C sectional drawing of opening-closing type disturbed belt soft rock static pressure sampler.
The specific embodiment:
Below in conjunction with accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, the utility model is further described.
Opening-closing type disturbed belt soft rock static pressure sampler is by front edge boots 1, right semi-circle sample bucket 3, left semicircle sample bucket 8, pressure calotte 5, set bolt 4, set bolt 9, pin 7, connecting bolt 6, front end force-transmitting pole 11, hydraulic jack 12 and back terminal support column 13 constitute, right semi-circle sample bucket 3 and left semicircle sample bucket 8 are respectively equipped with corresponding power transmission ear 2, front edge boots 1 are annular hollow structure, and front edge boots 1 front end has the wedge shape cutting edge of about 45 degree, and the cutting edge internal diameter of front edge boots 1 is consistent with the internal diameter of the drum that right semi-circle sample bucket 3 and left semicircle sample bucket 8 synthesize, the power transmission ear 2 of right semi-circle sample bucket 3 and left semicircle sample bucket 8 longitudinal walls is meshing with each other, power transmission ear 2 inside have the same concentric holes of diameter, make things convenient for pin 7 activities to import into or extract, pressure calotte 5 is an annular overall structure, pressure calotte 5 bottoms are provided with the Connection Block that is connected with front end force-transmitting pole 9, and pressure calotte 5 has a steam vent 10, the effect of steam vent is to be convenient to the sampler gas inside and discharges, right semi-circle sample bucket 3 and left semicircle sample bucket 8 synthetic drum structures, and be hinged to the opening-closing structure that freely to open and to close by two pins 7 and power transmission ear 2, front edge boots 1 are inserted in interior ring with the outer wall of the right side half sample bucket 2 and left half sample bucket 8, and it is fixing by four set bolts 4, pressure calotte 5 is inserted in interior ring with the right side half sample bucket 2 and left half sample bucket, 8 outer walls, and it is fixing by four set bolts 9, pressure calotte 5 and front end force-transmitting pole 11 flexibly connect by connecting bolt 6, the front end of position, the axis butt joint hydraulic jack 12 of front end force-transmitting pole 11, butt joint back, the front end center terminal support column 13 of hydraulic jack 12.
The concrete use of this utility model opening-closing type disturbed belt soft rock static pressure sampler follows these steps to carry out:
1) right semi-circle sample bucket 3 and the synthetic round barrel shape of left semicircle sample bucket 8 alignment, and in power transmission ear 2, insert pin 7;
2) front edge boots 1 are installed on right semi-circle sample bucket 3 and the left semicircle sample bucket 8, and install and fix bolt 9;
3) pressure calotte 5 is installed on right semi-circle sample bucket 3 and the left semicircle sample bucket 8, and installs and fixes bolt 4;
4) centre bore of front end force-transmitting pole 11 with pressure calotte 5 docked, and connecting bolt 6 is installed;
5), with hydraulic jack 12 and terminal support column 13 butt joints of a plurality of backs, make the rear end force-transmitting pole just in time touch the power of the holding crag of cavern successively along front end force-transmitting pole 11 axis directions;
6) by hydraulic jack along device axis direction load application, sampler is slowly clamp-oned disturbed belt soft formation inside in the hard rock, enter in the soft formation substantially until the pressure calotte 5 of sampler;
7) extract sampler, unload set bolt 4 and set bolt 9, extract pin 7 out, separately right semi-circle sample bucket 3 and left semicircle sample bucket 8 take out the disturbed belt soft rock.
Claims (2)
1. opening-closing type disturbed belt soft rock static pressure sampler in the cavern, the sample storehouse that comprises sampler, hydraulic jack (12), back terminal support column (13), it is characterized in that: the sample storehouse of sampler is by front edge boots (1), right semi-circle sample bucket (3), left semicircle sample bucket (8), pressure calotte (5) constitutes, front edge boots (1) are annular hollow structure, front edge boots (1) termination is provided with annular cutting edge, pressure calotte (5) bottom face is provided with Connection Block, on pressure calotte (5) bottom face, also have steam vent (10), the vertical end face outer wall of right semi-circle sample bucket (3) and left semicircle sample bucket (8) is respectively equipped with intermeshing power transmission ear (2), the power transmission ear has concentric holes on (2), pin (7) is inserted in power transmission ear (2) versatilely and goes up in the concentric holes, right semi-circle sample bucket (3) and left semicircle sample bucket (8) form round barrel shape, its two ends are set in front edge boots (1) and the pressure calotte (5), right semi-circle sample bucket (3) is connected by set bolt (4) with front edge boots (1) with left semicircle sample bucket (8), right semi-circle sample bucket (3) is connected by set bolt (9) with pressure calotte (5) with left semicircle sample bucket (8), and front end force-transmitting pole (11) is connected on the Connection Block of pressure calotte (5) bottom face by connecting bolt (6).
2. opening-closing type disturbed belt soft rock static pressure sampler in the cavern according to claim 1, it is characterized in that: the annular cutting edge of front edge boots (1) end is wedge shape, and annular cutting edge diameter is consistent with the drum internal diameter that right semi-circle sample bucket (3) and left semicircle sample bucket (8) synthesize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202773976U CN201786300U (en) | 2010-07-28 | 2010-07-28 | Open-close type static pressure sampler for bedding fault zone soft rock in cavern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202773976U CN201786300U (en) | 2010-07-28 | 2010-07-28 | Open-close type static pressure sampler for bedding fault zone soft rock in cavern |
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| Publication Number | Publication Date |
|---|---|
| CN201786300U true CN201786300U (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202773976U Expired - Fee Related CN201786300U (en) | 2010-07-28 | 2010-07-28 | Open-close type static pressure sampler for bedding fault zone soft rock in cavern |
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| CN (1) | CN201786300U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979007A (en) * | 2017-03-21 | 2017-07-25 | 中铁西北科学研究院有限公司 | A kind of undisturbed soil sampling equipment of space omnidirectional |
| CN112901099A (en) * | 2021-03-11 | 2021-06-04 | 广州海洋地质调查局 | Static pressure constant-speed coring tool and method |
-
2010
- 2010-07-28 CN CN2010202773976U patent/CN201786300U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979007A (en) * | 2017-03-21 | 2017-07-25 | 中铁西北科学研究院有限公司 | A kind of undisturbed soil sampling equipment of space omnidirectional |
| CN112901099A (en) * | 2021-03-11 | 2021-06-04 | 广州海洋地质调查局 | Static pressure constant-speed coring tool and method |
| CN112901099B (en) * | 2021-03-11 | 2024-03-22 | 广州海洋地质调查局 | Static pressure constant speed coring tool and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20110728 |