CN103924610A - Weep hole structure and method capable of avoiding blocking - Google Patents
Weep hole structure and method capable of avoiding blocking Download PDFInfo
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- CN103924610A CN103924610A CN201410180756.9A CN201410180756A CN103924610A CN 103924610 A CN103924610 A CN 103924610A CN 201410180756 A CN201410180756 A CN 201410180756A CN 103924610 A CN103924610 A CN 103924610A
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- main pipe
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- outer tube
- inner tube
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Abstract
The invention discloses a weep hole structure and method capable of avoiding blocking. The weep hole structure comprises a through hole in a retaining wall and a filter device installed inside the through hole. A main pipe of the filter device is filled with macadam filtering layers and a sand filtering layer, and a first filter cap and a second filter cap are packaged at the two ends of the main pipe; the middle of the first filter cap is concave, and the lowest point of the concave part is located on the axis of the main pipe; the outer surface of the main pipe is provided with key teeth; the main pipe is sleeved with an inner pipe; the second section of the inner pipe is provided with key grooves in fit with the key teeth; the inner wall of the third section of the inner pipe and the outer surface of the second filter cap are sealed and bonded through a bonding layer; at least the outer surface of the fourth section of the inner pipe is in a prism shape; a pressing ring is fixed to the left end of the inner pipe; the right end face of the pressing ring is tightly pressed on the first filter cap; an outer pipe is fixedly installed in the through hole of the retaining wall; the outer pipe and the inner pipe are connected and installed together in a sleeved mode through threads; the left end of the outer pipe is provided with an outer turnup; a sealing ring is arranged between the outer turnup and the retaining wall. The weep hole structure can prevent water and soil loss and is not prone to being blocked.
Description
Technical field
The present invention relates to retaining wall technical field, specifically a kind of spilled water hole structure and method of avoiding obstruction.
Background technology
In municipal administration or hydraulic engineering, retaining wall is very general at present.Retaining wall spilled water hole be building when retaining wall at keep at a certain distance away the with it aperture of indwelling of wall, its effect is for discharging the water in soil, reduces the pressure that retaining wall is subject to, and ensures the safety of retaining wall.Generally filling part cobble in spilled water hole, forms drainage layer, prevents that the soil body runs off.But it is still serious that this mode soil body runs off.
The patent No. is 201120391163.9 Chinese patent " a kind of spilled water hole with anti-filter function ", the structure decrease of its spilled water hole soil body loss.But there is other technological deficiency in it: it used after a period of time, easily blocked, thereby did not have due sluicing effect.
Summary of the invention
The shortcoming existing in order to overcome above-mentioned prior art, the object of the present invention is to provide a kind of spilled water hole structure and method of avoiding obstruction, and spilled water hole can not be blocked, and ensures that the function of spilled water hole can not lose efficacy.
A kind of spilled water hole structure of avoiding obstruction provided by the invention, comprises and is arranged on the through hole in retaining wall and is arranged on the filter in through hole, its special feature is: described filter comprises main pipe, inner tube, outer tube,
Left side is filled with rubble filtration beds in described main pipe, and in main pipe, left side is filled with sand filtration beds, is provided with rubble for stopping rubble filtration beds and enters the middle filter screen of sand filtration beds between rubble filtration beds and sand filtration beds; Described rubble filtration beds is provided with multistage, between adjacent two-stage rubble filtration beds, is provided with classification screen pack, and from right to left, the ballast grain sizes of multistage rubble filtration beds reduces step by step, and classification also reduces one by one with the aperture of screen pack; Main pipe's the right-hand member mouth of pipe is packaged with the first filter cap, and main pipe's the left end mouth of pipe is packaged with the second filter cap; The aperture of the first filter cap is greater than the aperture of the second filter cap; The minimum point place of the first filter cap medial recess and depression is positioned on main pipe's axis; On described main pipe's external surface, be provided with key tooth;
Described inner tube is sleeved on outside main pipe, and inner tube forms by four sections and four sections of coaxial lines, from right to left be designated as successively first paragraph, second segment, the 3rd section, the 4th section, the diameter of described first paragraph is greater than the external diameter of the first filter cap, the second filter cap; Described second segment is provided with keyway, and this keyway matches with the key tooth on described main pipe; The inwall of described the 3rd section and the external surface of the second filter cap are sealed and are bonded together by adhesive linkage; Described the 4th section at least external surface be prism-shaped; The right-hand member of inner tube is installed with pressure ring, and the left side of pressure ring is pressed in the end face edge of the first filter cap closely; The external surface of described inner tube is provided with external screw thread;
Described outer tube is fixedly mounted in the through hole of retaining wall, and the inner surface of described outer tube is provided with internal thread; Described inner tube is threaded connection installation within the outer tube; The right-hand member of outer tube is provided with a circle flanging, between the left side of flanging and the metope of retaining wall, is provided with sealing ring; A filter screen is fixed at the right-hand member mouth of pipe place of outer tube, and the aperture of this filter screen is greater than the aperture of the first filter cap; The left end mouth of pipe at outer tube is covered with a protective cover, and protective cover is provided with several leaking holes, and the axis of leaking hole is parallel with described main pipe's axis.
Further technical scheme as this spilled water hole structure: the medial recess of described the first filter cap is dome shape depression.
Further technical scheme as this spilled water hole structure: the medial recess of the first described filter cap is conical surface-shaped depression.
Further technical scheme as this spilled water hole structure: the endoporus of described the 4th section is also prism-shaped.
Further technical scheme as this spilled water hole structure: be provided with sealing ring between the left side of described pressure ring and the end face edge of the first filter cap.
Further technical scheme as this spilled water hole structure: be provided with multiple-sealed circle between the flanging left side of outer tube and the metope of retaining wall, and the left part of this multiple-sealed circle is all embedded in retaining wall.
Further technical scheme as this spilled water hole structure: also comprise an auxiliary socket, the endoporus of auxiliary socket coordinates with described the 4th section of external surface of inner tube; The external surface of auxiliary socket is also prism-shaped.
The method of avoiding spilled water hole to block based on above-mentioned spilled water hole structure provided by the invention, comprises the steps:
When sluicing, water enters into filter by the filter screen of outer tube right-hand member, and the native stone of bulk is first blocked in the right side of retaining wall by this filter screen;
Water is being carried the native stone that particle is less secretly and is being entered into the first filter cap place, the depression of the first filter cap can have guide functions to carrying short grained current secretly, earth and heavy stone ratio are easier to be deposited on lower floor, so be main pipe's axis place by current water conservancy diversion to the central authorities of depression, avoid current to flow in main pipe's peripheral side seam, and water conservancy diversion can make most of current flow into from axis to main pipe's axis place, in rubble filtration beds, flow downward again, extend filtration path, formed the filtration path longer than actual main pipe's length; Current are used after the filtration of filter screen through multistage rubble filtration beds, multiple classification, then filter through sand filtration beds, flow out finally by the second filter cap of crossing aperture minimum;
The water flowing out is finally discharged through the leaking hole on protective cover;
After the use of certain hour, change filter:
Take off the protective cover of outer tube left end;
Utilize box spanner, the socket end of box spanner is sleeved on the external surface of the 4th section of inner tube; Then rotational sleeve spanner, box spanner drives inner tube to rotate, due between inner tube and outer tube for being threaded, and outer tube is fixed in the through hole of retaining wall, the rotating drive inner tube of inner tube departs from from outer tube; Inner tube drives the first filter cap, main pipe, the second filter cap to move together by pressure ring, finally from outer tube, spins off; Inner tube, pressure ring, the first filter cap, main pipe, the second filter cap and the rubble, sand, middle filter screen, the classification filter screen that are filled in main pipe are designated as element kit;
When above-mentioned element kit is removed, the filter screen of outer tube right-hand member can stop that soil is along with falling;
New element kit is screwed in outer tube, and the socket end of recycling box spanner is sleeved on the 4th section of external surface of inner tube of new element kit, and rotational sleeve spanner, makes the right-hand member of this element kit arrive at the right-hand member of outer tube, stops;
Take off box spanner, complete replacing element kit, then protective cover is arranged on to outer tube left end.
Further technical scheme as the method for avoiding spilled water hole to block: if the length of element kit is shorter, first one end of auxiliary socket is sleeved on the external surface of the 4th section of inner tube; Again box spanner is sleeved on the other end of auxiliary socket, implements dismounting element kit.
Further technical scheme as the method for avoiding spilled water hole to block: be provided with three grades of rubble filtration bedss in described main pipe, be designated as successively one-level rubble filtration beds, secondary rubble filtration beds, three grades of rubble filtration bedss according to the sequencing of current warp; The ballast grain sizes of one-level rubble filtration beds is less than 20mm and is more than or equal to 15 millimeters; The ballast grain sizes of secondary rubble filtration beds is less than 15 millimeters and be more than or equal to 10 millimeters; The ballast grain sizes of three grades of rubble filtration bedss is less than 10 millimeters and be more than or equal to 5 millimeters.
The invention has the beneficial effects as follows: can make spilled water hole can not block, ensure that the function of spilled water hole can not lose efficacy; And the operation of disassembling, assembling and replacing filter is also very easy.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is described further:
Fig. 1 is the structure of the embodiment of the present invention and uses view;
Fig. 2 is the structural representation of filter;
Fig. 3 is the A-A schematic diagram of Fig. 2;
Fig. 4 is the left view of Fig. 2;
In figure: 1 retaining wall, 2 outer tubes, 21 flangings, 3 inner tubes, 31 first paragraphs, 32 second segments, 33 the 3rd sections, 34 the 4th sections, 35 keyways, 4 first filter caps, 5 second filter caps, 6 main pipes, 61 key teeth, 7 rubble filtration bedss, 71 one-level rubble filtration bedss, 72 secondary rubble filtration bedss, 73 3 grades of rubble filtration bedss, 74 classified filtering nets, 75 classified filtering nets, 8 sand filtration bedss; 9 pressure rings, 10 adhesive linkages, 11 sealing rings, 12 sealing rings, 13 auxiliary sockets, 14 middle filter screens, 15 filter screens, 16 protective covers, 161 leaking holes.
Detailed description of the invention
As shown in Figure 1, this can be avoided the spilled water hole structure of blocking, and comprises and is arranged on the through hole in retaining wall 1 and is arranged on the filter in through hole, and its special feature is: described filter comprises main pipe 6, inner tube 3, outer tube 2.
The interior right-hand part of described main pipe 6 is filled with rubble filtration beds 7, the interior left side of main pipe 6 is filled with sand filtration beds 8, filter screen 14 in the middle of being provided with between rubble filtration beds 7 and sand filtration beds 8, this centre filter screen 14 enters sand filtration beds 8 for stopping the rubble of rubble filtration beds 7, to ensure filter effect, also play certain anti-blocking effect.Described rubble filtration beds 7 is provided with multistage, between adjacent two-stage rubble filtration beds 7, is provided with classification screen pack, and from right to left, the ballast grain sizes of multistage rubble filtration beds reduces step by step, and classification also reduces one by one with the aperture of screen pack.Described in this embodiment, in main pipe 6, be provided with three grades of rubble filtration bedss, be designated as successively one-level rubble filtration beds 71, secondary rubble filtration beds 72, three grades of rubble filtration bedss 73 according to the sequencing of current warp; The ballast grain sizes of one-level rubble filtration beds 71 is less than 20mm and is more than or equal to 15 millimeters; The ballast grain sizes of secondary rubble filtration beds 72 is less than 15 millimeters and be more than or equal to 10 millimeters; The ballast grain sizes of three grades of rubble filtration bedss 73 is less than 10 millimeters and be more than or equal to 5 millimeters.Between one-level rubble filtration beds and secondary rubble filtration beds, classified filtering net 74 is set, between secondary rubble filtration beds 72 and three grades of rubble filtration bedss 73, classified filtering net 75 is set.Classified filtering net 74,75 separates the rubble between adjacent two-stage rubble filtration beds, like this good filtration effect and can prevent that the generation blended together of the rubble of variable grain from blocking.
Main pipe 6 the right-hand member mouth of pipe is packaged with the first filter cap 4, and main pipe 6 the left end mouth of pipe is packaged with the second filter cap 5; The aperture of the first filter cap 4 is greater than the aperture of the second filter cap 5; The minimum point place of the first filter cap 4 medial recess and depression is positioned on main pipe 6 axis; On described main pipe's 6 external surfaces, be provided with key tooth 61.
Described inner tube 3 is sleeved on outside main pipe 6, inner tube 3 forms by four sections and four sections of coaxial lines, from right to left be designated as successively first paragraph 31, second segment 32, the 3rd section 33, the 4th section 34, the diameter of described first paragraph 31 is greater than the external diameter of the first filter cap 4, the second filter cap 5; Described second segment 32 is provided with keyway 35, and this keyway 35 matches with the key tooth 61 on described main pipe 6; The inwall of described the 3rd section 33 and the external surface of the second filter cap 5 bond together by adhesive linkage 10 sealings; Described the 4th section 34 at least external surface be prism-shaped, as shown in Figure 4; The right-hand member of inner tube 3 is installed with pressure ring 9, and the left side of pressure ring 9 is pressed in the end face edge of the first filter cap 4 closely; The external surface of described inner tube 3 is provided with external screw thread.
Described outer tube 2 is fixedly mounted in the through hole of retaining wall 1, and the inner surface of described outer tube 2 is provided with internal thread; Described inner tube 3 is threaded connection and is arranged in outer tube 2; The right-hand member of outer tube 2 is provided with a circle flanging 21, between the left side of flanging 21 and the metope of retaining wall 1, is provided with sealing ring 11; A filter screen 15 is fixed at the right-hand member mouth of pipe place of outer tube 2, and the aperture of this filter screen 15 is greater than the aperture of the first filter cap 4; This filter screen 15 can play the effect of single filter.Be covered with a protective cover 16 at the left end mouth of pipe of outer tube 2, protective cover 16 is provided with several leaking holes 161, and the axis of leaking hole 161 is parallel with described main pipe's 6 axis.
Further technical scheme as this spilled water hole structure: in this embodiment, the medial recess of the first described filter cap 4 is conical surface-shaped depression, can play better anti-blocking effect, and it is more efficient to sluice; As other embodiments: the medial recess of described the first filter cap 4 is dome shape depression.
Further technical scheme as this spilled water hole structure: the endoporus of described the 4th section 34 is also prism-shaped.
Further technical scheme as this spilled water hole structure: be provided with sealing ring 12 between the left side of described pressure ring 9 and the end face edge of the first filter cap 4.Can anti-sealing from entering between pressure ring 9 and the first filter cap 4 between main pipe 6 and inner tube 3 without the outflow of filtering, thereby cause certain soil erosion.
Further technical scheme as this spilled water hole structure: be provided with multiple-sealed circle 11 between flanging 21 left sides of outer tube 2 and the metope of retaining wall 1, and the left part of this multiple-sealed circle 11 is all embedded in retaining wall 1.
Further technical scheme as this spilled water hole structure: also comprise an auxiliary socket 13, the endoporus of auxiliary socket 13 coordinates with described the 4th section of 34 external surfaces of inner tube 3, as shown in Figure 4; The external surface of auxiliary socket 13 is also prism-shaped.
Based on the method for avoiding spilled water hole to block of above-mentioned spilled water hole structure, comprise the steps:
When sluicing, water enters into filter by the filter screen 15 of outer tube 2 right-hand members, and the native stone of bulk is first blocked in the right side of retaining wall by this filter screen 15;
Water is being carried the native stone that particle is less secretly and is being entered into the first filter cap 4 places, the depression of the first filter cap 4 can have guide functions to carrying short grained current secretly, earth and heavy stone ratio are easier to be deposited on lower floor, so be main pipe 6 axis place by current water conservancy diversion to the central authorities of depression, avoid current to flow in peripheral side seam of the main pipe 6, and water conservancy diversion can make most of current flow into from axis to main pipe 6 axis place, in rubble filtration beds 7, flow downward again, extend filtration path, formed the filtration path of also growing than the length of actual main pipe's inner filtration layer; Current, after the filtration of filter screen 75, three grades of rubble filtration bedss 73 for one-level rubble filtration beds 71, the first filter screen 74 for classification, secondary rubble filtration beds 72, the second classification, then filter through sand filtration beds 8, flow out finally by the second filter cap 5 of crossing aperture minimum;
The water flowing out is finally discharged through the leaking hole 161 on protective cover 16;
After the use of certain hour, change filter:
Take off the protective cover 16 of outer tube 2 left ends;
Utilize box spanner, the socket end of box spanner is sleeved on the external surface of the 4th section 34 of inner tube; Then rotational sleeve spanner, box spanner drives inner tube 3 to rotate, due between inner tube 3 and outer tube 2 for being threaded, and outer tube 2 is fixed in the through hole of retaining wall 1, the rotating drive inner tube 3 of inner tube 3 departs from from outer tube 2; Inner tube 3 drives the first filter cap 4, main pipe 6, the second filter cap 5 to move together by pressure ring 9, finally from outer tube 2, spins off; Inner tube 3, pressure ring 9, the first filter cap 4, main pipe 6, the second filter cap 5 and the rubble, sand, middle filter screen, the classification filter screen that are filled in main pipe 6 are designated as element kit.
When above-mentioned element kit is removed, the filter screen 15 of outer tube 2 right-hand members can stop that soil is along with falling;
New element kit is screwed in outer tube 2, the socket end of recycling box spanner is sleeved on the 4th section of external surface of inner tube of new element kit again, and rotational sleeve spanner, makes the right-hand member of this element kit arrive at the right-hand member of outer tube, stops.
Take off box spanner, complete replacing element kit, realize and avoid spilled water hole to block.
The further technical scheme of method as avoiding spilled water hole to block: if the length of element kit is shorter, first one end of auxiliary socket 13 is sleeved on the external surface of the 4th section 34 of inner tube; Again box spanner is sleeved on the other end of auxiliary socket 13, implements dismounting element kit, then protective cover 16 is arranged on to outer tube 2 left ends.
" left side " " right side " in above-described embodiment be for convenience of description and adopt schematic diagram in relative position relation, do not represent absolute position, can not be interpreted as the restriction to technical scheme in the present patent application.
Claims (10)
1. can avoid a spilled water hole structure of blocking, comprise and be arranged on the through hole in retaining wall and be arranged on the filter in through hole, it is characterized in that: described filter comprises main pipe, inner tube, outer tube,
Left side is filled with rubble filtration beds in described main pipe, and in main pipe, left side is filled with sand filtration beds, is provided with rubble for stopping rubble filtration beds and enters the middle filter screen of sand filtration beds between rubble filtration beds and sand filtration beds; Described rubble filtration beds is provided with multistage, between adjacent two-stage rubble filtration beds, is provided with classification screen pack, and from right to left, the ballast grain sizes of multistage rubble filtration beds reduces step by step, and classification also reduces one by one with the aperture of screen pack; Main pipe's the right-hand member mouth of pipe is packaged with the first filter cap, and main pipe's the left end mouth of pipe is packaged with the second filter cap; The aperture of the first filter cap is greater than the aperture of the second filter cap; The minimum point place of the first filter cap medial recess and depression is positioned on main pipe's axis; On described main pipe's external surface, be provided with key tooth;
Described inner tube is sleeved on outside main pipe, and inner tube forms by four sections and four sections of coaxial lines, from right to left be designated as successively first paragraph, second segment, the 3rd section, the 4th section, the diameter of described first paragraph is greater than the external diameter of the first filter cap, the second filter cap; Described second segment is provided with keyway, and this keyway matches with the key tooth on described main pipe; The inwall of described the 3rd section and the external surface of the second filter cap are sealed and are bonded together by adhesive linkage; Described the 4th section at least external surface be prism-shaped; The right-hand member of inner tube is installed with pressure ring, and the left side of pressure ring is pressed in the end face edge of the first filter cap closely; The external surface of described inner tube is provided with external screw thread;
Described outer tube is fixedly mounted in the through hole of retaining wall, and the inner surface of described outer tube is provided with internal thread; Described inner tube is threaded connection installation within the outer tube; The right-hand member of outer tube is provided with a circle flanging, between the left side of flanging and the metope of retaining wall, is provided with sealing ring; A filter screen is fixed at the right-hand member mouth of pipe place of outer tube, and the aperture of this filter screen is greater than the aperture of the first filter cap; The left end mouth of pipe at outer tube is covered with a protective cover, and protective cover is provided with several leaking holes, and the axis of leaking hole is parallel with described main pipe's axis.
2. a kind of spilled water hole structure of blocking avoided according to claim 1, its spy: the medial recess of described the first filter cap is dome shape depression.
3. a kind of spilled water hole structure of avoiding obstruction according to claim 1, is characterized in that: the medial recess of the first described filter cap is conical surface-shaped depression.
4. according to the spilled water hole structure of any one obstruction avoided described in claim 1-3, it is characterized in that: the endoporus of described the 4th section is also prism-shaped.
5. a kind of spilled water hole structure of avoiding obstruction according to claim 1, is characterized in that: between the left side of described pressure ring and the end face edge of the first filter cap, be provided with sealing ring.
6. a kind of spilled water hole structure of avoiding obstruction according to claim 1, is characterized in that: between the flanging left side of outer tube and the metope of retaining wall, be provided with multiple-sealed circle, and the left part of this multiple-sealed circle is all embedded in retaining wall.
7. a kind of spilled water hole structure of avoiding obstruction according to claim 1, is characterized in that: also comprise an auxiliary socket, the endoporus of auxiliary socket coordinates with described the 4th section of external surface of inner tube; The external surface of auxiliary socket is also prism-shaped.
8. the method for avoiding spilled water hole to block based on spilled water hole structure described in claim 1, is characterized in that, comprises the steps:
When sluicing, water enters into filter by the filter screen of outer tube right-hand member, and the native stone of bulk is first blocked in the right side of retaining wall by this filter screen;
Water is being carried the native stone that particle is less secretly and is being entered into the first filter cap place, the depression of the first filter cap can have guide functions to carrying short grained current secretly, earth and heavy stone ratio are easier to be deposited on lower floor, so be main pipe's axis place by current water conservancy diversion to the central authorities of depression, avoid current to flow in main pipe's peripheral side seam, and water conservancy diversion can make most of current flow into from axis to main pipe's axis place, in rubble filtration beds, flow downward again, extend filtration path, formed the filtration path longer than actual main pipe's length; Current are used after the filtration of filter screen through multistage rubble filtration beds, multiple classification, then filter through sand filtration beds, flow out finally by the second filter cap of crossing aperture minimum;
The water flowing out is finally discharged through the leaking hole on protective cover;
After the use of certain hour, change filter:
Take off the protective cover of outer tube left end;
Utilize box spanner, the socket end of box spanner is sleeved on the external surface of the 4th section of inner tube; Then rotational sleeve spanner, box spanner drives inner tube to rotate, due between inner tube and outer tube for being threaded, and outer tube is fixed in the through hole of retaining wall, the rotating drive inner tube of inner tube departs from from outer tube; Inner tube drives the first filter cap, main pipe, the second filter cap to move together by pressure ring, finally from outer tube, spins off; Inner tube, pressure ring, the first filter cap, main pipe, the second filter cap and the rubble, sand, middle filter screen, the classification filter screen that are filled in main pipe are designated as element kit;
When above-mentioned element kit is removed, the filter screen of outer tube right-hand member can stop that soil is along with falling;
New element kit is screwed in outer tube, and the socket end of recycling box spanner is sleeved on the 4th section of external surface of inner tube of new element kit, and rotational sleeve spanner, makes the right-hand member of this element kit arrive at the right-hand member of outer tube, stops;
Take off box spanner, complete replacing element kit, then protective cover is arranged on to outer tube left end.
9. the method for avoiding spilled water hole to block according to claim 8, is characterized in that: if the length of element kit is shorter, first one end of auxiliary socket is sleeved on the external surface of the 4th section of inner tube; Again box spanner is sleeved on the other end of auxiliary socket, implements dismounting element kit.
10. the method for avoiding spilled water hole to block according to claim 8, it is characterized in that: in described main pipe, be provided with three grades of rubble filtration bedss, be designated as successively one-level rubble filtration beds, secondary rubble filtration beds, three grades of rubble filtration bedss according to the sequencing of current warp; The ballast grain sizes of one-level rubble filtration beds is less than 20mm and is more than or equal to 15 millimeters; The ballast grain sizes of secondary rubble filtration beds is less than 15 millimeters and be more than or equal to 10 millimeters; The ballast grain sizes of three grades of rubble filtration bedss is less than 10 millimeters and be more than or equal to 5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410180756.9A CN103924610B (en) | 2014-04-30 | 2014-04-30 | A kind of spilled water hole structure and method avoiding obstruction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410180756.9A CN103924610B (en) | 2014-04-30 | 2014-04-30 | A kind of spilled water hole structure and method avoiding obstruction |
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| CN103924610A true CN103924610A (en) | 2014-07-16 |
| CN103924610B CN103924610B (en) | 2015-10-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108643967A (en) * | 2018-05-14 | 2018-10-12 | 东莞市联洲知识产权运营管理有限公司 | A kind of sluicing collector of waterpower filling mining structure optimization |
| CN111877395A (en) * | 2020-07-30 | 2020-11-03 | 中冶南方城市建设工程技术有限公司 | Retaining wall drainage device and using method |
| CN114215487A (en) * | 2021-12-17 | 2022-03-22 | 山东唐口煤业有限公司 | Sand filtering and draining device for well wall drilling |
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| CN114215487B (en) * | 2021-12-17 | 2024-01-12 | 山东唐口煤业有限公司 | Sand filtering and draining device for borehole wall drilling |
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| CN103924610B (en) | 2015-10-28 |
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