CN103884534A - Underground filling body field sampling device - Google Patents
Underground filling body field sampling device Download PDFInfo
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- CN103884534A CN103884534A CN201410138880.9A CN201410138880A CN103884534A CN 103884534 A CN103884534 A CN 103884534A CN 201410138880 A CN201410138880 A CN 201410138880A CN 103884534 A CN103884534 A CN 103884534A
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Abstract
The invention provides an underground filling body field sampling device which consists of an external structure and an internal structure. The external structure comprises an outer sleeve (6), a top cover (1), a stressing handle (17) and a diamond bit (10); the internal structure of the device comprises an inner sleeve (7), an inner sleeve upper casing (5), an inner sleeve lower casing (8), a stop device and a C-shaped movable snap ring. According to the device, a standard test block of an underground filling body can be obtained, and the device has the advantages that the device is simple to process, convenient to carry, rapid in sampling and taking, a taken filling body sample (14) is not damaged and the like. During sampling, the stressing handle (17) is rotated, and pressure to the filling body is applied to the sampling device, so that the diamond bit (10) gradually cuts the filling body; after the sampling device is drilled to a preset position, the filling body is broken, the sampling device is taken out, and the sample is taken out of a hole. According to the device, the integrity of the filling body sample can be guaranteed, so that the most real filling body strength is obtained, the device is convenient to carry, power equipment can be used, and use of the device is not limited by power source location.
Description
Technical field
The present invention relates to a kind of obturation sampler, particularly obturation down-hole on-site sampling device, can be applicable to the mine of the method for mining by the way of filling, samples, to obtain the test block of Underground filler intensity detection by this device.
Background technology
The method of mining by the way of filling fully reclaiming mineral resources, control deep mining and press activity and improve aspect environmental protection and there is obvious advantage and obtained significant effect; thereby cause the generally attention of mining industry circle; the method of mining by the way of filling has obtained application more and more widely in China and even countries in the world, in China's underground mine, 45% non-ferrous metal large medium-size mine and 37% gold mine all adopt stowing method.
Strength of filling mass is the key parameter of the method for mining by the way of filling, but due to the impact of each factors such as the each component material physicochemical property of filling slurry, pulp density, filling process, the strength of filling mass in each mine is in continuous variable condition.If strength of filling mass is too high, mean and cause filling cost too high by jointing compound such as having added too much cement, cause unnecessary waste; If strength of filling mass is too low, likely cause that stope collapses, the series of problems such as casualties, equipment are impaired, ore losses.Accurately grasping the actual strength of Underground filler, be not only related to the safety of mine personnel, equipment, is all vital to reducing mining cost, raising ore recovery ratio and the rate of dilution.Underground filler sampling is a technical barrier always, generally can adopt down-hole adamantine drill sampling, the pre-buried die trial in down-hole, get the method such as cut after obturation sample.
If adopt down-hole adamantine drill sampling, can have following several problem:
Adamantine drill is mainly used in obtaining obturation sample, therefore velocity of rotation is than very fast, but strength of filling mass is generally 0.1MPa-5MPa, be only the 1/20-1/100 of general rock strength, obturation is very easy to be damaged under the effect of adamantine drill High Rotation Speed, is difficult to obtain complete obturation;
Obturation has the feature that water cut is large, intensity is low, if adopt core-drill(ing) machine sampling, under high rotating speed effect, liquefaction phenomenon still easily appears in obturation, is difficult to obtain complete sample;
General down-hole is Φ 45mm or less with core drilling internal diameter, but because strength of filling mass value is little, need the sample of larger diameter (being generally greater than Φ 70mm) just can obtain comparatively accurate strength of filling mass, therefore down-hole core-drill(ing) machine is difficult to obtain the suitable drill bit, the drilling tool that are applicable to obturation specimen size requirement;
Adopt the pre-buried die trial in down-hole to obtain the approach of obturation test block, also have very large disadvantage:
The pre-buried filling die trial in down-hole, must wait for after stope filling to the exploitation of adjacent stope and just can take out to pre-buried place, and the shortest time that obturation is disclosed often exceedes one month several months even, and the sample period is long;
Can not realize the grab sample to anywhere obturation, therefore cannot monitor the actual strength of any one stope filling body, also cannot monitor the strength of filling mass of any point in stope, be unfavorable in Quality of filling body control and pipe.
While getting pre-buried test block in obturation, often adopt the even means of explosion of machinery, not only waste time and energy, filling sample is very easy to sustain damage in sampling process;
Adopt down-hole to get bulk obturation, also can cutting processing the obturation test block that is standard, but because strength of filling mass is low, the process of getting bulk from Underground filler is exactly a destructive process to obturation, filling test block can cause again its secondary damage in process again, and the method is difficult to obtain strength of filling mass value accurately.
Summary of the invention
The present invention is intended at least solve one of above-mentioned technological deficiency.
For this reason, first object of the present invention is to propose a kind of obturation down-hole on-site sampling device, is applied to obturation down-hole on-site sampling, comprises external structure and inner structure two parts,
It is characterized in that: external structure comprises outer sleeve (6), top cover (1), afterburning handle (17), diamond head (10); Outer sleeve (6) upper end is connected with top cover (1) lower end, and outer sleeve (6) lower end is connected with diamond head (10);
Inner structure comprises sleeve pipe (5) on inner sleeve (7), inner sleeve, inner sleeve running casing (8), stop motion mechanism, C type movable snap ring (9), and the upper and lower two ends of inner sleeve (7) are connected with sleeve pipe on inner sleeve (5) and inner sleeve running casing (8) respectively; Stop motion mechanism is placed between top cover (1) and inner sleeve (7), described stop motion mechanism top contacts with top cover on-fixed, bottom is connected with inner sleeve (7) indirectly by sleeve pipe on inner sleeve (5), inner sleeve running casing (8) contacts with diamond head (10) on-fixed, and C type movable snap ring (9) is placed in inner sleeve running casing (8).
Preferably, described outer sleeve (6) upper end is detachable connection with the connected mode of top cover (1) lower end, and the connected mode of described outer sleeve (6) lower end and diamond head (10) is also detachable connection.
Preferably, described stop motion mechanism comprises ball grooves (2), bearing or ball (3) and supports cap (4); In described ball grooves (2), be mounted with described bearing or ball (3), ball grooves (2) lower end is fixedly connected with support cap (4).
Preferably, described stop motion mechanism top contacts with top cover on-fixed, bottom is indirectly connected and is specially by sleeve pipe on inner sleeve (5) and inner sleeve (7): ball grooves (2) upper end contact with top cover (1) on-fixed, sleeve pipe on inner sleeve (5) up and down two ends respectively with support cap (4) lower end and inner sleeve (7) detachable being connected of upper end.
Preferably, described top cover (1) upper end is right cylinder, has through hole (12) and a square opening (13) of the afterburning handle of an insertion on it, and described through hole (12) direction is described right cylinder radial direction; Described square opening (13) is along right cylinder axial direction; Described afterburning handle (17) is yi word pattern bar.
Preferably, described outer sleeve (6) is a tubular structure; Described inner sleeve (7) is made up of two half slot structures, described inner sleeve (7) upper/lower terminal and sleeve pipe on inner sleeve (5), detachable connection of inner sleeve running casing (8).
Preferably, described inner sleeve (7) upper/lower terminal is threaded connection with sleeve pipe on inner sleeve (5), inner sleeve running casing (8) that mechanism is detachable to be connected.
Preferably, described inner sleeve running casing (8) outside is one cylindrical, and external diameter remains unchanged; The inside of inner sleeve running casing (8) is a reverse frustoconic, and internal diameter from top to bottom diminishes gradually.
Preferably, C type movable snap ring (9) is non-close ring, be funnel-shaped structure, lateral surface is close to inner sleeve running casing (8) medial surface, external diameter from top to bottom reduces gradually, internal diameter equates with diamond head (10) internal diameter, can in inner sleeve running casing (8), move up and down.
Preferably, described diamond head (10) is cylinder type, in the bit face of diamond head (10) lower end, is bumped into adamas (11).
The advantage of this sampler is:
(1) obturation sampler adopts the artificial sampling that loads, compared with the mechanical load sampling modes such as obturation sample rig, drill jumbo, sampler rotating speed can freely be controlled, avoid only having for uniaxial compressive strength the damage and fracture of the obturation of rock mass 1/20-1/100, can obtain the most real strength of filling mass.
(2) owing to having designed inner sleeve (7), in the time that outer sleeve (6) rotation is crept into downwards, inner sleeve (7) does not rotate with outer sleeve (6), between obturation sample (14) and inner sleeve (7), do not produce relative displacement, damage to obturation is little, for the less obturation of uniaxial compressive strength, can ensure the integrality of obturation sample.
(3) sampler is easy to carry, rotation while can end user's masterpiece being sampling, the power of incision obturation, also can adopt the rotating speed adjustable electric motor of battery-type driving as power, be not subject to the restriction in power source place, can arbitrary place, random time sample in down-hole, be applicable to filling in mine weight monitoring, be also applicable to that borehole operation is wide, operating location changes greatly, the limited actual conditions of power source.
(4) sampler simplicity of design, each ingredient is mine spare part in common, processes very conveniently, can, according to the requirement of obturation sample different-diameter to be got, process different samplers.
The present invention has successfully solved Underground filler and has sampled difficult problem, and to Optimization Packing match ratio and stope structure size, to reducing cement mixing content and filling cost, raising personnel in the pit, equipment all have very important significance in the safety of borehole operation.
Brief description of the drawings
Fig. 1 is obturation on-site sampling device front elevation.
Fig. 2 is obturation on-site sampling device side view.
Fig. 3 is obturation on-site sampling device vertical view.
Fig. 4 is afterburning handle, is (a) afterburning handle side view, is (b) afterburning handle front elevation.
Fig. 5 is electrical equipment.
Fig. 6 is obturation on-site sampling device cut-open view (along I-I cut-open view).
Fig. 7 is obturation on-site sampling device cut-open view (along II-II cut-open view).
Fig. 8 is obturation on-site sampling device cut-open view (along III-III cut-open view).
When Fig. 9 is the sampling of obturation on-site sampling device, constitutional diagram when obturation sample has just entered inner sleeve running casing.
When Figure 10 is the sampling of obturation on-site sampling device, constitutional diagram when obturation sample has just entered inner sleeve.
Figure 11 is constitutional diagram when carrying on obturation sample after obturation on-site sampling device sampling finishes.
In figure: 1-top cover; 2-ball grooves; 3-bearing/ball; 4-supports cap; Sleeve pipe on 5-inner sleeve; 6-outer sleeve; 7-inner sleeve; 8-inner sleeve running casing; 9-C type movable snap ring; 10-diamond head; 11-adamas; 12-through hole; 13-square opening; 14-obturation sample; 15-selector button; 16-power knob; The afterburning handle of 17-.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
Fig. 1-3,6 are respectively front elevation, side view, vertical view and the cut-open view of the obturation on-site sampling device of the embodiment of the present invention.
In this enforcement, obturation on-site sampling device is mainly made up of external structure and inner structure two parts.
Wherein, the external structure of obturation on-site sampling device is made up of outer sleeve (6), top cover (1), afterburning handle (17), diamond head (10).
(1) outer sleeve (6) is a tubular structure, and all there is internal thread at upper and lower two ends, and upper end is connected with top cover (1) lower end, and lower end is connected with diamond head (10), plays intermal force.
(2) top cover (1) upper end is right cylinder, on it, there is the axial through hole of a vertical cylindrical body (12) to run through top cover, can, by afterburning handle (17) patchhole, in the time that carrying out circular motion, afterburning handle (17) drive this device to rotatablely move; In addition, on top cover (1), have one along cylinder axis to square opening (13), the rotating head of electrical equipment (as shown in Figure 5) can be inserted to driving device rotation; The turning of top cover lower end the external thread mating with outer sleeve (6) upper end internal thread, for by itself and outer sleeve (6) detachable connection of upper end, make the power that puts on top cover (1) be passed to outer sleeve (6) and diamond head (10).
(3) as shown in Figure 4, afterburning handle (17) is yi word pattern bar, when storage, carrying sampler, handle can be unloaded, and reduces sampler volume; During to on-site sampling, afterburning handle (17) is inserted to the axial through hole (12) of vertical cylinder that crosses top cover (1), by the pressurization of holding with a firm grip, rotate afterburning handle (17), top cover (1), outer sleeve (6), diamond head (10) that drive is attached thereto rotate, and bit cutting is entered in obturation; For the obturation of varying strength, also can adopt afterburning handle (17) reinforcing of different length, to reach different afterburning effects.
(4) diamond head (10) is cylinder type, its upper end turning the external thread mating with outer sleeve (6) lower end internal thread, make itself and outer sleeve (6) detachable being connected of lower end; In the bit face of diamond head (10) lower end, be bumped into adamas (11).
The inner structure of obturation on-site sampling device is made up of sleeve pipe (5), inner sleeve running casing (8), stop motion mechanism, C type movable snap ring (9) on inner sleeve (7), inner sleeve.
(1) inner sleeve (7) is for mutually fastening formed tubular structure by two half slots, two half slots can be rived and form vertically by one section of pipe, the upper and lower two ends of half slot have all processed external thread, and sleeve pipe on inner sleeve (5) and inner sleeve running casing (8) will be installed respectively.
(2) on inner sleeve the sleeve pipe equal turning in (5) two ends internal thread, lower end internal thread mates with half slot upper external screw thread, so that with inner sleeve (7) detachable being connected of upper end, upper end internal thread with support cap (4) lower end external thread and mate so that with detachable being connected of support cap (4) in stop motion mechanism.
(3) inner sleeve running casing (8) upper end turning internal thread, this internal thread mates with half slot lower end external thread, make inner sleeve running casing (8) upper end and inner sleeve (7) detachable being connected of lower end, lower end contacts (be that both contact but mechanical connection not, both can relatively independently be moved) with diamond head (10) on-fixed.Inner sleeve running casing (8) outside is one cylindrical, and external diameter remains unchanged; The inside of inner sleeve running casing (8) is a reverse frustoconic, and internal diameter from top to bottom diminishes gradually, as shown in FIG. 8 and 9.
(4) stop motion mechanism is placed between top cover (1) and inner sleeve (7), both are kept apart, its top contacts with top cover but not mechanical being connected, bottom is connected with inner sleeve (7) indirectly by sleeve pipe on inner sleeve (5), makes the rotation of top cover (1) can not drive inner sleeve (7) rotation.Wherein, this stop motion mechanism is made up of ball grooves (2), bearing/ball (3), support cap (4).Ball grooves (2) buried bearing/ball (3), its upper end contacts with top cover (1) on-fixed, and its lower end is closely fixedly linked with supporting cap (4), and can not occur relatively in rotary moving; As mentioned above, supporting cap (4) upper end and ball grooves (2) lower end is closely fixedly linked, there is the external thread mating with sleeve pipe on inner sleeve (5) internal thread lower end car, makes itself and detachable connection of sleeve pipe on inner sleeve (5).
(5) C type movable snap ring (9) is non-close ring, is placed in inner sleeve running casing (8); Its profile is funnel-shaped structure, and lateral surface is close to inner sleeve running casing (8) medial surface, and external diameter from top to bottom reduces gradually, can in inner sleeve running casing (8), in certain limit, move up and down; Its inside is cylindrical, and internal diameter remains unchanged, and size equates with diamond head (10) internal diameter.C type movable snap ring (9) lower end is bell-mouth structure of air, when sampling, when obturation sample (14) enters after inner sleeve (6), can play guide effect.
According to obturation on-site sampling device of the present invention; because its outer sleeve (6) is connected with inner sleeve (7) on-fixed; in the time that the outer power of top cover (1) is rotated; only drive outer sleeve (6) rotation sampling; inner sleeve (7) does not rotate with top cover (1) because of the setting of stop motion mechanism, plays the object of protection obturation sample integrality.
When sampling, first afterburning handle (17) is inserted in the axial hole (12) of vertical cylinder or by the rotating head of electrical equipment insert along cylinder axis to square opening (12) in; Sampler is placed in obturation to be sampled, rotate afterburning handle (17) or open the rotation of electrical equipment driving device, and sampler is applied to the pressure to obturation, under rotation and pressure-acting, diamond head (10) cuts gradually into obturation.
In sampling process, because C type movable snap ring (9) contacts with inner sleeve running casing (8) but not mechanical being connected, therefore can in inner sleeve running casing (8), move up and down, different phase below in conjunction with obturation on-site sampling device of the present invention in sampling process, describes in detail to the working method of C type movable snap ring (9):
(1) under normal circumstances or when when sampling obturation sample (14) does not enter into inner sleeve (7), C type movable snap ring (9) is only subject to gravity, its state is as shown in the partial enlarged drawing in Fig. 9.
(2) in the time that obturation sample (14) enters into inner sleeve (7), C type movable snap ring (9) produces friction with obturation sample (14) Surface Contact, under the effect of friction force, on C type movable snap ring (9), move until be subject to stopping after inner sleeve (7) restriction, its state is as shown in the partial enlarged drawing in Figure 10.
(3) when sampler is drilled into after preposition, swing slightly to the left and right sampler, broken obturation, use this device that obturation sample (14) is taken out from obturation, now gravitate obturation sample (14) moves down with C type movable snap ring (9), now overall C type movable snap ring (9) down sliding that is funnel-shaped structure just stops sliding to certain position, but now obturation sample (14) may glide continuing, in this process, obturation sample (14) rubs owing to contacting with C type movable snap ring (9), obturation sample (14) will continue to drive under C type movable snap ring (9) generation to displacement, C type movable snap ring (9) is in the process moving down, C type snap ring opening (9) Stepwize Shrink, in the time that its internal diameter is less than the diameter of obturation sample (14), obturation sample (14) is subject to while downslide stopping and cannot continuing to glide from the friction of C type movable snap ring (9), local stuck, as shown in figure 11.By above action, complete the process of obturation sampler sampling.
Be below the specifications parameter of an example of obturation on-site sampling device of the present invention:
(1) sampler top cover (1) external diameter 94mm, long 40mm, adopts common iron.
(2) afterburning handle (17) diameter 20mm, long 600mm, adopts common iron.
(3) outer sleeve (6) external diameter 94mm, internal diameter 88mm, upper and lower two ends are provided with internal thread, adopt common iron.
(4) inner sleeve (7) external diameter 84mm, internal diameter 78mm, long 260mm(obturation sample (14) length 200mm, can be processed as the long reference block of 160mm, meets the sampling requirement of standard filling test block), material is common steel tube.
(5) sleeve pipe (5) external diameter 86mm on inner sleeve, internal diameter 84mm, openend Internal Threading, adopts common iron.
(6) inner sleeve running casing (8) external diameter 86mm, internal diameter maximum is that 84mm, minimum place are 74mm, and its inside is a reverse frustoconic, and internal diameter from top to bottom diminishes gradually, and openend Internal Threading adopts common iron.
(7) diamond head (10) internal diameter 73mm, external diameter 100mm, long 120mm, can adopt national standard product.
(8) C type movable snap ring (9) is non-close ring, is placed in inner sleeve running casing (8); Its profile is funnel-shaped structure, and lateral surface is close to inner sleeve running casing (8) medial surface, and external diameter from top to bottom reduces gradually, is 84mm, the minimum 80mm of being to the maximum, and its internal diameter is 74mm, adopts common iron.
Utilize the step sampling of obturation on-site sampling device of the present invention as follows:
(1) sampler is placed in obturation to be sampled, rotates afterburning handle (17), and sampler is applied to the pressure to obturation, under rotation and pressure-acting, diamond head (10) cuts gradually into obturation.
(2) when sampler is drilled into after preposition, swing slightly to the left and right sampler, broken obturation sample (14), goes out sampler afterwards, and the obturation sample (14) in sampler is taken out thereupon in hole.
(3) the lower diamond head (10) of dismounting, sampler a little tilts, inner sleeve (7) and inner obturation sample (14) thereof can take out thereupon, also sleeve pipe (8) on sleeve pipe (5), inner sleeve on dismountable inner sleeve, takes out the obturation sample (14) in it.
(4) after sampling finishes, clean sampler, after the coating lubricating oil of the each position of sampler, each parts are installed and resetted.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present invention is by claims and be equal to and limit.
Claims (10)
1. an obturation down-hole on-site sampling device, is applied to obturation down-hole on-site sampling, comprises external structure and inner structure two parts,
It is characterized in that: external structure comprises outer sleeve (6), top cover (1), afterburning handle (17), diamond head (10); Outer sleeve (6) upper end is connected with top cover (1) lower end, and outer sleeve (6) lower end is connected with diamond head (10);
Inner structure comprises sleeve pipe (5) on inner sleeve (7), inner sleeve, inner sleeve running casing (8), stop motion mechanism, C type movable snap ring (9), and the upper and lower two ends of inner sleeve (7) are connected with sleeve pipe on inner sleeve (5) and inner sleeve running casing (8) respectively; Stop motion mechanism is placed between top cover (1) and inner sleeve (7), described stop motion mechanism top contacts with top cover on-fixed, bottom is connected with inner sleeve (7) indirectly by sleeve pipe on inner sleeve (5), inner sleeve running casing (8) contacts with diamond head (10) on-fixed, and C type movable snap ring (9) is placed in inner sleeve running casing (8).
2. a kind of obturation according to claim 1 down-hole on-site sampling device, it is characterized in that: described outer sleeve (6) upper end is detachable connection with the connected mode of top cover (1) lower end, and the connected mode of described outer sleeve (6) lower end and diamond head (10) is also detachable connection.
3. a kind of obturation according to claim 1 down-hole on-site sampling device, is characterized in that: described stop motion mechanism comprises ball grooves (2), bearing or ball (3) and supports cap (4); In described ball grooves (2), be mounted with described bearing or ball (3), ball grooves (2) lower end is fixedly connected with support cap (4).
4. a kind of obturation according to claim 3 down-hole on-site sampling device, it is characterized in that: described stop motion mechanism top contacts with top cover on-fixed, bottom is indirectly connected and is specially by sleeve pipe on inner sleeve (5) and inner sleeve (7): ball grooves (2) upper end contact with top cover (1) on-fixed, sleeve pipe on inner sleeve (5) up and down two ends respectively with support cap (4) lower end and inner sleeve (7) upper end.
5. a kind of obturation according to claim 1 down-hole on-site sampling device, it is characterized in that: described top cover (1) upper end is right cylinder, the through hole (12) and the square opening (13) that on it, have the afterburning handle of an insertion, described through hole (12) direction is described right cylinder radial direction; Described square opening (13) is along right cylinder axial direction; Described afterburning handle (17) is yi word pattern bar.
6. a kind of obturation according to claim 1 down-hole on-site sampling device, is characterized in that: described outer sleeve (6) is a tubular structure; Described inner sleeve (7) is made up of two half slot structures, described inner sleeve (7) upper/lower terminal and sleeve pipe on inner sleeve (5), detachable connection of inner sleeve running casing (8).
7. a kind of obturation according to claim 6 down-hole on-site sampling device, is characterized in that: described inner sleeve (7) upper/lower terminal is threaded connection with sleeve pipe on inner sleeve (5), inner sleeve running casing (8) that mechanism is detachable to be connected.
8. a kind of obturation according to claim 1 down-hole on-site sampling device, is characterized in that: described inner sleeve running casing (8) outside is one cylindrical, and external diameter remains unchanged; The inside of inner sleeve running casing (8) is a reverse frustoconic, and internal diameter from top to bottom diminishes gradually.
9. a kind of obturation according to claim 1 down-hole on-site sampling device, it is characterized in that: C type movable snap ring (9) is non-close ring, be funnel-shaped structure, lateral surface is close to inner sleeve running casing (8) medial surface, external diameter from top to bottom reduces gradually, internal diameter equates with diamond head (10) internal diameter, can in inner sleeve running casing (8), move up and down.
10. a kind of obturation according to claim 1 down-hole on-site sampling device, is characterized in that: described diamond head (10) is cylinder type, in the bit face of diamond head (10) lower end, is bumped into adamas (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410138880.9A CN103884534B (en) | 2014-04-09 | 2014-04-09 | A kind of obturation underground site sampler |
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| CN105973636A (en) * | 2016-04-28 | 2016-09-28 | 长春黄金研究院 | Nondestructive sampling method of cemented filling body |
| CN107300504A (en) * | 2017-06-19 | 2017-10-27 | 金川集团股份有限公司 | A kind of Desending slicing admission passage filling body intensity on-the-spot test method |
| CN108168942A (en) * | 2018-03-09 | 2018-06-15 | 河北省建筑科学研究院 | A kind of ancient building dirt sampler and sampling method |
| CN113405850A (en) * | 2021-06-24 | 2021-09-17 | 北京科技大学 | Slurry on-site sampling device in goaf filling process and use method |
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| CN108168942A (en) * | 2018-03-09 | 2018-06-15 | 河北省建筑科学研究院 | A kind of ancient building dirt sampler and sampling method |
| CN113405850A (en) * | 2021-06-24 | 2021-09-17 | 北京科技大学 | Slurry on-site sampling device in goaf filling process and use method |
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| CN103884534B (en) | 2016-02-17 |
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Effective date of registration: 20180823 Address after: 100192 Beijing Haidian District Fang Qing Garden 1 Building 2 unit 501 Co-patentee after: Jinchang embellish for chemical construction limited liability company Patentee after: Han Siyu Co-patentee after: Shaanxi Huajin Mining Co., Ltd. Address before: 100192 Beijing Haidian District Fang Qing Garden 1 Building 2 unit 501 Patentee before: Han Siyu |