CN115075780B - Positioning device and positioning method for in-situ leaching uranium mining built-in filter - Google Patents
Positioning device and positioning method for in-situ leaching uranium mining built-in filter Download PDFInfo
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- CN115075780B CN115075780B CN202110269054.8A CN202110269054A CN115075780B CN 115075780 B CN115075780 B CN 115075780B CN 202110269054 A CN202110269054 A CN 202110269054A CN 115075780 B CN115075780 B CN 115075780B
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- 229910052770 Uranium Inorganic materials 0.000 title claims abstract description 27
- 238000002386 leaching Methods 0.000 title claims abstract description 27
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 23
- 238000005065 mining Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000004576 sand Substances 0.000 claims abstract description 33
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000005520 cutting process Methods 0.000 claims abstract description 18
- 230000000149 penetrating effect Effects 0.000 claims abstract description 6
- 238000013461 design Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 8
- 239000002002 slurry Substances 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 229920001778 nylon Polymers 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000000084 colloidal system Substances 0.000 claims description 3
- 238000005553 drilling Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000012633 leachable Substances 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/04—Gravelling of wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/10—Setting of casings, screens, liners or the like in wells
- E21B43/103—Setting of casings, screens, liners or the like in wells of expandable casings, screens, liners, or the like
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Filtering Materials (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to the field of on-site leaching uranium mining, in particular to a positioning device and a positioning method for an on-site leaching uranium built-in filter. The positioning device for the filter arranged in the in-situ leaching uranium mining comprises a filter, a sand setting pipe, a reverse gravel filling component, a sealing sand stopping component, a positioning sleeve, an embedded rod and a sleeve; the sealing sand stop component comprises: one end of the supporting tube is connected with the positioning sleeve; the wall of the supporting tube is provided with a cutting groove; an expansion rubber ring sleeved on the cutting groove; at least 4 penetrating embedded rods are arranged in the middle of the positioning sleeve; the embedded rod is embedded from the top end of the positioning sleeve to the bottom end; the top of the embedded rod is provided with a torsion spring which is connected with the outer wall of the positioning sleeve; the top end of the positioning sleeve is connected with the supporting tube, and the bottom end of the positioning sleeve is connected with the filter; the bottom end of the inner side of the sleeve is provided with a first clamping groove, and the top end of the inner side of the sleeve is provided with a second clamping groove; the embedded rod is clamped with the first clamping groove. The invention solves the problem of floating of the built-in filter, ensures that the built-in filter is accurately fixed, and prolongs the service life of the built-in filter.
Description
Technical Field
The invention relates to the field of on-site leaching uranium mining, in particular to a positioning device and a positioning method for an on-site leaching uranium built-in filter.
Background
The filter is the throat drilled by the in-situ uranium mining process, is the only passage for leachable agents and leachables liquid to and from the ore deposit, and is the weakest part. In the mine production process, because underground substances react with leaching agents, geological stress of a mineral layer, hydraulic pressure change of pumping injection and frequent well flushing are easy to form the phenomena of mechanical blockage, chemical blockage, deformation, damage, sand leakage and the like of a filter part, the pumping injection quantity is greatly reduced, pumping and liquid injection operation can not be completed, process drilling can only be scrapped, uranium resources can not be effectively recycled, and drilling failure becomes a common problem of the in-situ immersed mine in China.
The built-in filter type drilling structure is an advanced well forming method. Compared with the gravel-filled drilling structure, when the filter part is blocked, damaged and the like, the blocked or damaged built-in filter can be directly lifted out, a new built-in filter is replaced, and the original permeability of the filter is recovered. Currently, UPVC materials are selected for the in-situ leaching uranium mining built-in filter, and high-strength sealing rubber gaskets are arranged at the periphery of the upper end and the lower end of the in-situ leaching uranium mining built-in filter so as to increase friction between the built-in filter and a well pipe, thereby achieving the purposes of fixing the built-in filter and sealing. Through mine production, the phenomenon that the built-in filter floats upwards is found to be influenced by groundwater disturbance, the service life of the expanded rubber in a complex leaching solution environment and the like, so that the position of a mineral seam is offset, the uranium concentration of leaching solution and the liquid pumping and injecting amount are reduced simultaneously, and the service life of the built-in filter is shortened.
Disclosure of Invention
The invention aims to solve the technical problems that: the positioning device and the positioning method for the built-in filter of the in-situ leaching uranium mining solve the problem that an existing built-in filter floats upwards, enable the built-in filter to be accurately fixed, and prolong the service life of the built-in filter.
The invention provides a positioning device of an in-situ leaching uranium mining built-in filter, which comprises a filter, a sand setting pipe, a reverse gravel filling component and further comprises the following components: sealing sand stopping component, positioning sleeve, embedded rod and sleeve;
the seal sand stopping member includes: one end of the supporting tube is connected with the positioning sleeve; a cutting groove is formed in the pipe wall of the supporting pipe; and
an expansion rubber ring sleeved on the cutting groove;
at least 4 penetrating embedded rods are arranged in the middle of the positioning sleeve;
the embedded rod is embedded from the top end of the positioning sleeve to the bottom end; the top of the embedded rod is provided with a torsion spring which is connected with the outer wall of the positioning sleeve;
the top end of the positioning sleeve is connected with the supporting tube, and the bottom end of the positioning sleeve is connected with the filter;
the bottom end of the inner side of the sleeve is provided with a first positioning clamping groove, and the top end of the inner side of the sleeve is provided with a second positioning clamping groove;
the embedded rod is clamped with the first positioning clamping groove.
Preferably, the included angle between the top of the embedded rod and the top end of the outer wall of the positioning sleeve is smaller than 60 degrees.
Preferably, the distance between the first positioning clamping groove and the second positioning clamping groove is 200-400 mm.
Preferably, the cutting groove is at least 2 channels, and the width of the cutting groove is 15-20 mm.
Preferably, the expansion rubber ring is adhered with the cutting groove through colloid.
Preferably, the support tube is a nylon tube or a PE tube, and one end of the support tube is provided with an outer screw thread; the positioning sleeve is a stainless steel tube, and the top end of the positioning sleeve is provided with an inner screw thread which is connected with the supporting tube; the bottom of the positioning sleeve is provided with an outer screw thread which is connected with the filter.
Preferably, the length of the embedded rod positioned at the outer part of the positioning sleeve is 10-15 mm, and the length of the embedded rod positioned at the inner part of the positioning sleeve is 10-15 mm.
The invention provides a positioning method for a built-in filter by utilizing the technical scheme, which comprises the following steps:
designing a filter fixing position according to geophysical prospecting well data, and lowering a sleeve provided with a clamping groove to a designed depth;
assembling the reverse gravel filling device, the sand setting pipe, the filter, the positioning sleeve and the sealing sand stopping component from bottom to top to form a built-in filter assembly;
the drill rod penetrates through the annular space of the filter and is connected with the gravel filling device in a reverse screw thread mode, the drill rod presses the embedded rod in the filter, and the embedded rod compresses the torsion spring so that the external embedded rod is in a contracted state; lowering the built-in filter assembly to a design position;
after the built-in filter is placed down to the designed position, the expansion rubber ring is fully expanded, and the filter is fixed and sealed;
and lifting the drill rod after the gravel filling is completed, and opening the position of the embedded rod, which is inserted into a preset positioning clamping groove of the sleeve, to fix the filter under the action of the torsion spring.
Preferably, cementing with cement slurry is performed and after 48 hours of flocculation of the cement slurry, the built-in filter assembly is lowered to the design location.
Preferably, the sleeve is provided with a first positioning clamping groove and a second positioning clamping groove, wherein the first positioning clamping groove at the lower end is a precise fixed position, and the second positioning clamping groove is positioned at 200-400 mm above the first positioning clamping groove;
and lifting the drill rod after the gravel filling is completed, and opening the first positioning clamping groove preset by the insertion sleeve to complete the fixation of the filter by the embedded rod under the action of the torsion spring.
Compared with the prior art, the positioning device and the positioning method for the built-in filter of the in-situ leaching uranium mining realize accurate and effective fixation of the built-in filter, avoid upward movement of the built-in filter caused by hydraulic factors in the mine operation process, ensure normal operation of in-situ leaching production activities, and have the characteristics of low cost, simplicity in processing and the like.
Drawings
FIG. 1 shows a schematic diagram of a positioning device of an in-situ uranium mining filter;
FIG. 2 shows a cross-sectional view of a seal sand stop member;
FIG. 3 shows a cross-sectional view of a positioning sleeve;
FIG. 4 shows a torsion spring opening schematic;
FIG. 5 shows a cross-sectional view of a cannula;
drawing and annotating: the sand stopping device comprises a sealing sand stopping component 1, a positioning sleeve 2, a filter 3, a sand setting pipe 4, a reverse gravel filling component 5, an inner screw thread 6, a torsion spring 7, an embedded rod 8, an outer wall of the positioning sleeve 9, an outer screw thread 10, a supporting pipe 11, a cutting groove 12, an expansion rubber ring 13, an outer screw thread 14, a second positioning clamping groove 15, a sleeve 16, a first positioning clamping groove 17 and a drill rod 18.
Detailed Description
For a further understanding of the present invention, embodiments of the invention are described below in conjunction with the examples, but it should be understood that these descriptions are merely intended to illustrate further features and advantages of the invention, and are not limiting of the invention.
The embodiment of the invention discloses a positioning device of an in-situ leaching uranium mining built-in filter, which is shown in fig. 1, and comprises a filter 3, a sand setting pipe 4, a reverse gravel filling component 5 and further comprises: a sealing sand stop part 1, a positioning sleeve 2, an embedded rod 8 and a sleeve 16;
as shown in fig. 2, the sealing sand stop member 1 includes: a support tube 11, wherein one end of the support tube 11 is connected with the positioning sleeve 2; a cutting groove 12 is formed in the wall of the supporting tube 11; and
an expansion rubber ring 13 sleeved on the cutting groove 12;
at least 4 penetrating embedded rods 8 are arranged in the middle of the positioning sleeve 2;
the embedded rod 8 is embedded from the top end to the bottom end of the positioning sleeve 2; the top of the embedded rod 8 is provided with a torsion spring 7 which is connected with the outer wall 9 of the positioning sleeve;
the top end of the positioning sleeve 2 is connected with the supporting tube 11, and the bottom end is connected with the filter 3;
the bottom end of the inner side of the sleeve 16 is provided with a first positioning clamping groove 17, and the top end of the inner side of the sleeve 16 is provided with a second positioning clamping groove 15;
the embedded rod 8 is clamped with the first positioning clamping groove 17.
According to the invention, the filter 3, the sand setting pipe 4 and the reverse gravel filling component 5 are sequentially connected, and the top of the filter 3 is sequentially connected with the positioning sleeve 2 and the sealing sand stopping component 1.
The seal sand stop member 1 includes: a support tube 11, wherein one end of the support tube 11 is connected with the positioning sleeve 2; the support tube is preferably a nylon tube or a PE tube. Preferably, one end of the supporting tube 11 is provided with an outer screw thread;
a cutting groove 12 is formed in the wall of the supporting tube 11; the number of the slits is at least 2, preferably 2 to 6, and more preferably 4, considering the combination of the concentration and the fixation effect, and the width of the slits is preferably 15 to 20mm.
The expansion rubber ring 13 sleeved on the cutting groove 12 is preferably adhered to the cutting groove through colloid.
As shown in fig. 3 and 4, the middle part of the positioning sleeve 2 is provided with at least 4 penetrating embedded rods 8, the top of each embedded rod 8 is provided with a torsion spring 7 which is connected with the outer wall 9 of the positioning sleeve, and the contraction and the expansion of the embedded rods are regulated; the embedded rod 8 is embedded from the top end to the bottom end of the positioning sleeve 2; preferably, the included angle between the top of the embedded rod 8 and the top end of the outer wall 9 of the positioning sleeve is smaller than 60 degrees.
The length of the embedded rod 8 positioned at the outer part of the positioning sleeve is 10-15 mm, and the length of the embedded rod 8 positioned at the inner part of the positioning sleeve 2 is 10-15 mm.
The top end of the positioning sleeve 2 is connected with the supporting tube 11, and the bottom end is connected with the filter 3;
the positioning sleeve 2 is preferably a stainless steel tube, and the top end of the positioning sleeve is provided with an inner screw thread which is connected with the outer screw thread end of the supporting tube 11; the bottom of the positioning sleeve 2 is provided with an outer screw thread which is connected with the filter 3.
As shown in fig. 5, a first positioning slot 17 is formed at the bottom end of the inner side of the sleeve 16, and a second positioning slot 15 is formed at the top end of the inner side of the sleeve 16; preferably, the distance between the first positioning slot 17 and the second positioning slot 15 is 200-400 mm.
The embedded rod 8 is clamped with the first positioning clamping groove 17.
If deviation appears below the filter, the filter cannot be accurately fixed at the first positioning clamping groove, and effective fixation is realized when the later filter floats to the second positioning clamping groove.
For better fixation, the inside of the sleeve 16 may preferably also be provided with a plurality of positioning detents.
The invention also provides a positioning method of the built-in filter by utilizing the technical scheme, which comprises the following steps:
designing a filter fixing position according to geophysical prospecting well data, and lowering a sleeve provided with a clamping groove to a designed depth;
assembling the reverse gravel filling device, the sand setting pipe, the filter, the positioning sleeve and the sealing sand stopping component from bottom to top to form a built-in filter assembly;
the drill rod penetrates through the annular space of the filter and is connected with the gravel filling device in a reverse screw thread mode, the drill rod presses the embedded rod in the filter, and the embedded rod compresses the torsion spring so that the external embedded rod is in a contracted state; lowering the built-in filter assembly to a design position;
after the built-in filter is placed down to the designed position, the expansion rubber ring is fully expanded, and the filter is fixed and sealed;
and lifting the drill rod after the gravel filling is completed, and opening the clamping groove preset by the insertion sleeve to complete the fixation of the filter by the embedded rod under the action of the torsion spring.
The positioning method is described in detail below in terms of steps.
Step 1: designing a filter fixing position according to geophysical prospecting well data, and lowering a sleeve provided with a clamping groove to a designed depth;
the sleeve is the sleeve at the lowest end, and is generally a UPVC sleeve. Preferably, the sleeve is provided with a first positioning clamping groove and a second positioning clamping groove, wherein the first positioning clamping groove at the lower end is a precise fixed position, and the second positioning clamping groove is positioned at 200-400 mm above the first positioning clamping groove;
the second positioning clamping groove has the function that if the filter is out of deviation, the filter cannot be accurately fixed at the first positioning clamping groove, and effective fixation is realized when the filter floats to the second positioning clamping groove in the later stage.
In the case of cementing with cement slurry, after 48 hours of flocculation of the cement slurry, the built-in filter assembly is lowered to the design position.
Step 2: assembling the reverse gravel filling device, the sand setting pipe, the filter, the positioning sleeve and the sealing sand stopping component from bottom to top to form a built-in filter assembly;
step 3: the drill rod penetrates through the annular space of the filter and is connected with the gravel filling device in a reverse screw thread mode, the drill rod presses the embedded rod in the filter, and the embedded rod compresses the torsion spring so that the external embedded rod is in a contracted state; lowering the built-in filter assembly to a design position;
step 4: after the built-in filter is placed down to the designed position, the expansion rubber ring is fully expanded, and the filter is fixed and sealed;
after the built-in filter is placed at the designed position, the filter is kept stand for 12 to 60 hours, so that the expansion rubber ring is fully expanded to fix and seal the filter.
Step 5: and lifting the drill rod after the gravel filling is completed, and opening the clamping groove preset by the insertion sleeve to complete the fixation of the filter by the embedded rod under the action of the torsion spring.
Preferably, after the gravel filling is completed, the drill rod is lifted up, and the embedded rod is opened and inserted into a preset first positioning clamping groove of the sleeve to complete the fixation of the filter under the action of the torsion spring.
In order to further understand the present invention, the positioning device and the positioning method for the in-situ leaching uranium mining built-in filter provided by the present invention are described in detail below with reference to the following examples, and the scope of protection of the present invention is not limited by the following examples.
Example 1
As shown in fig. 1 to 5, the positioning device for the in-situ leaching uranium mining built-in filter comprises a positioning clamping groove 17, a sealing sand stopping component 1 and a positioning sleeve 2: the first positioning clamping groove is formed in a UPVC sleeve 16 at the lowest end of a drill hole, a first positioning clamping groove 17 and a second positioning clamping groove 15 are reserved at the design position of a fixed position of the filter, the widths of the first positioning clamping groove 17 and the second positioning clamping groove 15 are 20mm, and the distance between the first positioning clamping groove 17 and the second positioning clamping groove 15 is 200mm; the sealing sand stopping component 1 is arranged at the top end of the built-in filter and is formed by processing a nylon or PE supporting tube 11, four grooving 12 are made on the tube in advance, the width of each grooving 12 is 15-20 mm, an expansion rubber ring 13 is adhered in each grooving 12 by strong adhesive, and the lower end of the component is a component outer screw thread 10 connected with a positioning sleeve 2; the positioning sleeve 2 is formed by processing stainless steel, the upper end is connected with the sealing sand stopping component 1 by an inner screw thread 6, the lower end is provided with an outer screw thread 10 which is connected with the filter main body 3, the middle part of the positioning sleeve 2 is provided with four penetrating embedded rods 8, the top of the outer embedded rod 8 of the positioning sleeve 2 is provided with a torsion spring 7 which is connected with the outer wall 9 of the positioning sleeve, and the shrinkage and the expansion of the embedded rod 8 are regulated.
Example 2
The method for positioning a built-in filter according to embodiment 1 comprises the following steps:
step 1, setting a sleeve positioning clamping groove; according to geophysical prospecting logging data design filter fixed position, processing two rings of positioning clamping grooves on a UPVC sleeve 16 of lower extreme, wherein first positioning clamping groove 17 of lower extreme is accurate fixed position, and second positioning clamping groove 15 is in first positioning clamping groove 17 upper portion 200mm department, and second positioning clamping groove 15 effect is if the filter discharges the present deviation down, can't fix in first positioning clamping groove 17 department accurately, realizes effective fixed when later stage filter come-up to second positioning clamping groove 15.
Step 2, casing pipe is lowered; the casing 16 is lowered to the design depth.
Step 3, connecting a reverse gravel filling component 5, a sand setting pipe 4, a filter 3, a positioning sleeve 2 and a sealing sand stopping component 1 from bottom to top to form a built-in filter assembly;
and 4, connecting a drill rod 18 with the gravel filling component 5 in a reverse screw manner through the annular space of the filter, pressing the embedded rod 8 inside the filter by the drill rod, and compressing the torsion spring 7 by the embedded rod 8 to enable the external embedded rod 8 to be in a contracted state. And cementing the cement slurry, and after the cement slurry is flocculated for 48 hours, starting to lower the built-in filter through the surface hole, and lowering the built-in filter assembly to the designed position.
And 5, after the built-in filter is placed at the designed position, standing for 12 hours, fully expanding the expanded rubber ring 13, and fixing and sealing the filter 3. Beginning to fill the gravel, rotating the drill rod 18 clockwise after the gravel is filled, lifting the drill rod 18 upwards, and inserting the embedded rod 8 into the preset first positioning clamping groove 17 of the sleeve by opening the lever arm under the action of the torsion spring 7 to fix the filter 3.
The above description of the embodiments is only for aiding in the understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a built-in filter positioner of in situ leaching uranium mining, includes filter, sand setting pipe, reverse gravel pack part, its characterized in that still includes: sealing sand stopping component, positioning sleeve, embedded rod and sleeve;
the seal sand stopping member includes: one end of the supporting tube is connected with the positioning sleeve; a cutting groove is formed in the pipe wall of the supporting pipe; and
an expansion rubber ring sleeved on the cutting groove;
at least 4 penetrating embedded rods are arranged in the middle of the positioning sleeve;
the embedded rod is embedded from the top end of the positioning sleeve to the bottom end; the top of the embedded rod is provided with a torsion spring which is connected with the outer wall of the positioning sleeve;
the top end of the positioning sleeve is connected with the supporting tube, and the bottom end of the positioning sleeve is connected with the filter;
the bottom end of the inner side of the sleeve is provided with a first positioning clamping groove, and the top end of the inner side of the sleeve is provided with a second positioning clamping groove;
the embedded rod is clamped with the first positioning clamping groove;
the drill rod penetrates through the annular space of the filter and is connected with the gravel filling device in a reverse screw thread mode, the drill rod presses the embedded rod in the filter, and the embedded rod compresses the torsion spring so that the external embedded rod is in a contracted state; the in-built filter assembly is lowered to the design position.
2. The in-situ leaching uranium mining built-in filter positioning device of claim 1, wherein an included angle between the top of the embedded rod and the top end of the outer wall of the positioning sleeve is smaller than 60 degrees.
3. The in-situ leaching uranium mining built-in filter positioning device of claim 1, wherein a distance between the first positioning clamping groove and the second positioning clamping groove is 200-400 mm.
4. The in-situ leaching uranium mining built-in filter positioning device of claim 1, wherein the cutting groove is at least 2, and the width of the cutting groove is 15-20 mm.
5. The in-situ leaching uranium mining built-in filter positioning device of claim 1, wherein the expanded rubber ring and the cutting groove are adhered by colloid.
6. The in-situ leaching uranium mining built-in filter positioning device according to claim 1, wherein the support tube is a nylon tube or a PE tube, and an outer screw thread is arranged at one end of the support tube, which is connected with the positioning sleeve; the positioning sleeve is a stainless steel tube, and an inner screw thread is arranged at the top end of the positioning sleeve; the bottom of the positioning sleeve is provided with an outer screw thread which is connected with the filter.
7. The in-situ leaching uranium mining built-in filter positioning device of claim 1, wherein the length of the embedded rod located at the outer portion of the positioning sleeve is 10-15 mm, and the length of the embedded rod located at the inner portion of the positioning sleeve is 10-15 mm.
8. A positioning method using the in-situ leaching uranium mining built-in filter positioning device described in any one of claims 1 to 7, comprising the steps of:
designing a filter fixing position according to geophysical prospecting well data, and lowering a sleeve provided with a clamping groove to a designed depth;
assembling the reverse gravel filling device, the sand setting pipe, the filter, the positioning sleeve and the sealing sand stopping component from bottom to top to form a built-in filter assembly;
the drill rod penetrates through the annular space of the filter and is connected with the gravel filling device in a reverse screw thread mode, the drill rod presses the embedded rod in the filter, and the embedded rod compresses the torsion spring so that the external embedded rod is in a contracted state; lowering the built-in filter assembly to a design position;
after the built-in filter is placed down to the designed position, the expansion rubber ring is fully expanded, and the filter is fixed and sealed;
and lifting the drill rod after the gravel filling is completed, and opening the position of the embedded rod, which is inserted into a preset positioning clamping groove of the sleeve, to fix the filter under the action of the torsion spring.
9. The positioning method as set forth in claim 8, wherein cement slurry is used for cementing, and the built-in filter assembly is lowered to the design position after the cement slurry has flocculated for 48 hours.
10. The positioning method according to claim 8, wherein the sleeve is provided with a first positioning clamping groove and a second positioning clamping groove, wherein the first positioning clamping groove at the lower end is a precise fixed position, and the second positioning clamping groove is positioned at 200-400 mm above the first positioning clamping groove;
and lifting the drill rod after the gravel filling is completed, and opening the first positioning clamping groove preset by the insertion sleeve to complete the fixation of the filter by the embedded rod under the action of the torsion spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110269054.8A CN115075780B (en) | 2021-03-12 | 2021-03-12 | Positioning device and positioning method for in-situ leaching uranium mining built-in filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110269054.8A CN115075780B (en) | 2021-03-12 | 2021-03-12 | Positioning device and positioning method for in-situ leaching uranium mining built-in filter |
Publications (2)
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Citations (7)
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| US4054320A (en) * | 1976-08-24 | 1977-10-18 | United States Steel Corporation | Method for the removal of radioactive waste during in-situ leaching of uranium |
| JP2000220160A (en) * | 1999-01-29 | 2000-08-08 | Oji Rubber Kasei Kk | Attaching structure of connection pipe to manhole bored hole, attaching method for connection pipe to manhole board hole, water stop boot expansion ring employed therein, and attaching jig for expansion ring |
| RU111187U1 (en) * | 2011-04-04 | 2011-12-10 | Али Тельман-оглы Нагиев | SLIP FILTER WITH DISPERSANTER |
| CN106930734A (en) * | 2015-12-30 | 2017-07-07 | 新疆中核天山铀业有限公司 | A kind of ground-dipping uranium extraction drilling exchangeable filter |
| CN108533234A (en) * | 2018-06-13 | 2018-09-14 | 邹佳宸 | Horizontal well fixed tubular column sublevel fill stoping and kit |
| CN209444319U (en) * | 2019-01-09 | 2019-09-27 | 河南理工大学 | Gas drainage screen casing launches fixed device |
| CN112049612A (en) * | 2019-06-05 | 2020-12-08 | 中核通辽铀业有限责任公司 | Method for building replaceable filter in-situ leaching uranium mining production drill hole |
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2021
- 2021-03-12 CN CN202110269054.8A patent/CN115075780B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4054320A (en) * | 1976-08-24 | 1977-10-18 | United States Steel Corporation | Method for the removal of radioactive waste during in-situ leaching of uranium |
| JP2000220160A (en) * | 1999-01-29 | 2000-08-08 | Oji Rubber Kasei Kk | Attaching structure of connection pipe to manhole bored hole, attaching method for connection pipe to manhole board hole, water stop boot expansion ring employed therein, and attaching jig for expansion ring |
| RU111187U1 (en) * | 2011-04-04 | 2011-12-10 | Али Тельман-оглы Нагиев | SLIP FILTER WITH DISPERSANTER |
| CN106930734A (en) * | 2015-12-30 | 2017-07-07 | 新疆中核天山铀业有限公司 | A kind of ground-dipping uranium extraction drilling exchangeable filter |
| CN108533234A (en) * | 2018-06-13 | 2018-09-14 | 邹佳宸 | Horizontal well fixed tubular column sublevel fill stoping and kit |
| CN209444319U (en) * | 2019-01-09 | 2019-09-27 | 河南理工大学 | Gas drainage screen casing launches fixed device |
| CN112049612A (en) * | 2019-06-05 | 2020-12-08 | 中核通辽铀业有限责任公司 | Method for building replaceable filter in-situ leaching uranium mining production drill hole |
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|---|---|
| CN115075780A (en) | 2022-09-20 |
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