CN109595134B - High-pressure pumping equipment for shallow sand layer dewatering well construction - Google Patents
High-pressure pumping equipment for shallow sand layer dewatering well construction Download PDFInfo
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- CN109595134B CN109595134B CN201811505198.3A CN201811505198A CN109595134B CN 109595134 B CN109595134 B CN 109595134B CN 201811505198 A CN201811505198 A CN 201811505198A CN 109595134 B CN109595134 B CN 109595134B
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- Prior art keywords
- box
- baffle
- pumping equipment
- suction box
- shallow sand
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
- F04B9/103—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having only one pumping chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/06—Endless track vehicles with tracks without ground wheels
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/20—Filtering
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses high-pressure pumping equipment for construction of a shallow sand layer dewatering well, which comprises a pumping box and a motor box, wherein motors are horizontally arranged at two ends of the bottom end in the motor box through bases, crawler belts are arranged at two sides of the motor box, one end, far away from the motors, of a rotating shaft is connected with the output ends of the crawler belts through a coupling, a second hydraulic cylinder is vertically arranged at one end of the top end of the motor box, a sleeve is uniformly and vertically arranged at the top end of the motor box at one side of the second hydraulic cylinder, a metal rod penetrating through the top end of the sleeve is vertically arranged at the top end of a spring, a cleaning groove is arranged at one side, close to the second hydraulic cylinder, of the bottom end of the pumping box, a sliding block matched with a sliding rail is arranged in the sliding rail, and. This high-pressure pumping equipment is used in shallow sand bed precipitation well construction drives first baffle and slides when starting second hydraulic cylinder to be convenient for clear up silt.
Description
Technical Field
The invention relates to the technical field of dewatering well construction, in particular to high-pressure pumping equipment for construction of a dewatering well in a shallow sand layer.
Background
Need carry out precipitation treatment to the sand bed before shallow sand bed construction, consequently need a shallow sand bed precipitation well construction to satisfy the construction needs with high-pressure pumping equipment in the market.
However, most of high-pressure pumping equipment for shallow sand dewatering well construction in the current market is easy to block in use, and the service life of the equipment can be shortened due to large vibration in use of most of high-pressure pumping equipment for shallow sand dewatering well construction in the current market.
Disclosure of Invention
The invention aims to provide high-pressure pumping equipment for shallow sand layer dewatering well construction, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a high-pressure pumping device for shallow sand layer dewatering well construction comprises a pumping box and a motor box, wherein a motor is horizontally installed at two ends of the bottom end inside the motor box through a base, a rotating shaft is horizontally installed at the output end of the motor, tracks are installed on two sides of the motor box, one end, far away from the motor, of the rotating shaft is connected with the output end of the tracks through a coupler, a second hydraulic cylinder is vertically installed at one end of the top end of the motor box, a second hydraulic rod is vertically installed at the output end of the second hydraulic cylinder, a sleeve is uniformly and vertically installed at the top end of the motor box on one side of the second hydraulic cylinder, a spring is vertically installed inside the sleeve, a metal rod penetrating through the top end of the sleeve is vertically installed at the top end of the spring, the pumping box is installed at the top ends of the metal rod and the second hydraulic rod, a cleaning groove is arranged at one side, the water pumping box is characterized in that a sliding block matched with the sliding rail is installed inside the sliding rail, a first baffle is vertically installed on the inner side of the sliding block, the middle position of the bottom end of the first baffle is connected with the top end of a second hydraulic rod, a metal plate is obliquely installed at the bottom end inside the water pumping box, a water suction pipe is horizontally installed at one end, far away from a second hydraulic cylinder, of the lower end of the water pumping box, a second baffle is hinged to one end, near the water pumping box, of the top end inside the water suction pipe through a hinged shaft, a stop block is installed at the bottom end inside the water suction pipe on one side of the second baffle, a second screen is installed inside the water suction pipe, far away from the second baffle, of the stop block, a first screen is horizontally installed at the lower end inside the water pumping box, a water outlet pipe is horizontally installed at one side, the vertical first hydraulic stem that runs through the suction box top of installing of first pneumatic cylinder output, and the rubber bowl is installed to the bottom of first hydraulic stem.
Preferably, the metal pole passes through to constitute telescopic machanism between spring and the sleeve, and metal pole, spring and sleeve all are provided with three groups to every metal pole of group, spring and sleeve all are provided with threely, and every metal pole of group, spring and sleeve all set up about the axis symmetry of suction box simultaneously.
Preferably, the cross section of the rubber cup is arc-shaped.
Preferably, the first baffle passes through and constitutes slide mechanism between slider and the slide rail, and slider and slide rail all are provided with two.
Preferably, the second baffle forms a rotating mechanism through the hinge shaft and the water suction pipe.
Preferably, the vent holes are provided in two.
Compared with the prior art, the invention has the beneficial effects that: the high-pressure pumping equipment for the shallow sand layer dewatering well construction is characterized in that the motor, the rotating shaft and the crawler are installed, the motor is started to drive the rotating shaft to rotate, the rotating shaft drives the crawler to rotate, so that the high-pressure pumping equipment for the shallow sand layer dewatering well construction is moved to a construction site, the transportation and the following work are facilitated, the water suction pipe, the first hydraulic cylinder, the first hydraulic rod, the rubber bowl, the water suction box, the water outlet pipe, the second baffle plate, the hinge shaft, the stop block, the second screen and the first screen are installed, the water suction pipeline is connected to the water suction pipe, the first hydraulic cylinder is started to drive the first hydraulic rod to stretch, the first hydraulic rod drives the rubber bowl to move up and down, the rubber bowl shrinks when the first hydraulic rod shrinks, water enters the inside of the water suction box through the water suction pipe, the rubber bowl expands to cling to the inner wall of the water suction box when the first hydraulic rod elongates, air, the second baffle is driven to rotate through the hinged shaft under the action of water flow, when the first hydraulic rod contracts upwards for the second time and contracts again, the second baffle falls down, the bottom end of the second baffle is contacted with the baffle so that water which is not completely injected into the water outlet pipe for the first time can not be pumped out, large-particle rock blocks can not enter the water pumping box under the action of the second screen, fine silt can be prevented from entering the water outlet pipe under the action of the first screen so as to block the water outlet pipe, the high-pressure water pumping equipment for the shallow sand layer precipitation well construction can be prevented from being blocked, impact force generated by vibration when the high-pressure water pumping equipment for the shallow sand layer precipitation well construction works is transmitted to the metal rod through the water pumping box through the installed water pumping box, the force is eliminated under the elastic force of the spring, and therefore the service life of the high-pressure water pumping equipment for the shallow sand layer precipitation well construction can be prolonged, through the metal sheet of installation, first baffle, second hydraulic cylinder, slider and slide rail, when this high-pressure pumping equipment for shallow sand layer precipitation well construction used some silt of the inside accumulation of a period of time, the silt of accumulating together under the effect of metal sheet can be deposited near first baffle, then start second hydraulic cylinder and drive the shrink of second hydraulic cylinder, second hydraulic cylinder drives first baffle and passes through the slider and slide in the slide rail is inside to be convenient for clear up silt.
Drawings
FIG. 1 is a front sectional view of the present invention;
FIG. 2 is a schematic left side sectional view of the present invention;
FIG. 3 is an enlarged view of the portion A of FIG. 1 according to the present invention.
In the figure: 1. a first hydraulic cylinder; 2. a first hydraulic lever; 3. a rubber bowl; 4. a metal rod; 5. a spring; 6. a crawler belt; 7. a metal plate; 8. a sleeve; 9. a second hydraulic cylinder; 10. a second hydraulic rod; 11. cleaning the tank; 12. a water outlet pipe; 13. a first screen; 14. a water pumping box; 15. a vent hole; 16. a rotating shaft; 17. a motor; 18. a motor case; 19. a first baffle plate; 20. a slider; 21. a second screen; 22. hinging a shaft; 23. a suction pipe; 24. a second baffle; 25. a stopper; 26. a slide rail.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, an embodiment of the present invention is shown: a high-pressure pumping device for construction of a dewatering well in a shallow sand layer comprises a pumping box 14 and a motor box 18, wherein both ends of the bottom end in the motor box 18 are horizontally provided with motors 17 through bases, the types of the motors 17 can be Y90S-2, the output ends of the motors 17 are horizontally provided with rotating shafts 16, both sides of the motor box 18 are provided with caterpillar tracks 6, one ends of the rotating shafts 16, far away from the motors 17, are connected with the output ends of the caterpillar tracks 6 through couplers, one end of the top end of the motor box 18 is vertically provided with a second hydraulic cylinder 9, the output end of the second hydraulic cylinder 9 is vertically provided with a second hydraulic rod 10, the top end of the motor box 18 on one side of the second hydraulic cylinder 9 is uniformly and vertically provided with a sleeve 8, a spring 5 is vertically arranged in the sleeve 8, the top end of the spring 5 is vertically provided with a metal rod 4 penetrating through the, three groups of metal rods 4, three groups of springs 5 and three groups of sleeves 8 are arranged, the metal rods 4, the springs 5 and the sleeves 8 are symmetrically arranged around the central axis of the pumping box 14, so that the stability of the pumping box 14 is convenient to maintain, the pumping box 14 is arranged at the top ends of the metal rods 4 and the second hydraulic rod 10, a cleaning groove 11 is arranged at one side, close to the second hydraulic cylinder 9, of the bottom end of the pumping box 14, slide rails 26 are vertically arranged at two sides inside the cleaning groove 11, a slide block 20 matched with the slide rails 26 is arranged inside the slide rails 26, a first baffle plate 19 is vertically arranged inside the slide block 20, a sliding mechanism is formed between the first baffle plate 19 and the slide rails 20, two slide blocks 20 and two slide rails 26 are arranged on the slide rails 26, so that sludge is convenient to clean, the middle position of the bottom, the metal plate 7 is obliquely arranged at the bottom end inside the pumping box 14, the water suction pipe 23 is horizontally arranged at one end, far away from the second hydraulic cylinder 9, of the lower end of the pumping box 14, the top end inside the water suction pipe 23 is hinged with the second baffle plate 24 through a hinge shaft 22, the second baffle plate 24 forms a rotating mechanism through the hinge shaft 22 and the water suction pipe 23 so as to prevent water from falling back, the stop block 25 is arranged at the bottom end inside the water suction pipe 23 at one side of the second baffle plate 24, the second screen 21 is arranged inside the water suction pipe 23 at one side of the stop block 25, far away from the second baffle plate 24, the first screen 13 is horizontally arranged at the lower end inside the pumping box 14, the water outlet pipe 12 is horizontally arranged at one side, near the second hydraulic cylinder 9, the vent holes 15 are arranged at both ends of the top end of the pumping box 14, the vent holes 15 are two so as to facilitate air entering, the vertical first hydraulic stem 2 that runs through 14 tops of suction box of installing of 1 output of first pneumatic cylinder, and the rubber bowl 3 is installed to the bottom of first hydraulic stem 2, and the cross section of rubber bowl 3 sets up to the arc, is convenient for absorb water.
The working principle is as follows: when the high-pressure pumping equipment for shallow sand precipitation well construction is used, an external power supply is firstly switched on, the starting motor 17 drives the rotating shaft 16 to rotate, the rotating shaft 16 drives the crawler belt 6 to rotate, so that the high-pressure pumping equipment for shallow sand precipitation well construction is moved to a construction site for convenient transportation and follow-up work, then the water suction pipeline is connected to the water suction pipe 23, the first hydraulic cylinder 1 is started to drive the first hydraulic rod 2 to extend and retract, the first hydraulic rod 2 drives the rubber bowl 3 to move up and down, when the first hydraulic rod 2 contracts, the rubber bowl 3 contracts, water enters the water suction box 14 through the water suction pipe 23, when the first hydraulic rod 2 extends, the rubber bowl 3 expands to tightly cling to the inner wall of the water suction box 14 to press air downwards, water is discharged from the water outlet pipe 12, the second baffle plate 24 is driven to rotate through the articulated shaft 22 under water flow, and when the first hydraulic rod 2 contracts upwards again, the rubber bowl 3 contracts, at this time, the second baffle 24 falls, the bottom end of the second baffle 24 contacts with the stop 25, so that water which is not completely injected into the water outlet pipe 12 for the first time can not be pumped out, large-particle stones can not enter the water pumping box 14 under the action of the second screen 21, fine silt can be prevented from entering the water outlet pipe 12 under the action of the first screen 13 to block the water outlet pipe 12, so that the high-pressure water pumping equipment for the shallow sand precipitation well construction can be prevented from being blocked, when the high-pressure water pumping equipment for the shallow sand precipitation well construction works, shock generated by the shock is transmitted to the metal rod 4 through the water pumping box 14, the shock is eliminated under the elastic force of the spring 5, so that the service life of the high-pressure water pumping equipment for the shallow sand precipitation well construction can be prolonged, when a part of silt is accumulated in the high-pressure water pumping equipment for the shallow sand precipitation well construction for a period of time, the silt accumulated under the action of the metal plate 7 can be deposited near the first baffle plate 19, then the second hydraulic cylinder 9 is started to drive the second hydraulic cylinder 10 to contract, and the second hydraulic cylinder 10 drives the first baffle plate 19 to slide in the slide rail 26 through the slide block 20, so that the silt is convenient to clean.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides a shallow sand layer precipitation well construction is with high-pressure pumping equipment, includes suction box (14) and motor case (18), its characterized in that: the hydraulic pump is characterized in that motors (17) are horizontally mounted at two ends of the bottom end inside the motor box (18) through bases, rotating shafts (16) are horizontally mounted at output ends of the motors (17), tracks (6) are mounted on two sides of the motor box (18), one ends, far away from the motors (17), of the rotating shafts (16) are connected with output ends of the tracks (6) through shaft couplings, second hydraulic cylinders (9) are vertically mounted at one ends of the top ends of the motor box (18), second hydraulic cylinders (10) are vertically mounted at output ends of the second hydraulic cylinders (9), sleeves (8) are uniformly and vertically mounted at the top ends of the motor box (18) on one side of the second hydraulic cylinders (9), springs (5) are vertically mounted inside the sleeves (8), metal rods (4) penetrating through the tops of the sleeves (8) are vertically mounted at the top ends of the springs (5), and water pumping boxes (14) are mounted at the tops of the metal rods, one side that suction box (14) bottom is close to second pneumatic cylinder (9) is provided with clearance groove (11), and the both sides of clearance groove (11) inside are all vertically installed slide rail (26), slide rail (26) internally mounted have with slide rail (26) assorted slider (20), and slider (20) inboard vertical installation has first baffle (19), the intermediate position department of first baffle (19) bottom is connected with second hydraulic stem (10) top, metal sheet (7) are installed to the slope of suction box (14) inside bottom, and the one end horizontal installation that second pneumatic cylinder (9) was kept away from to suction box (14) lower extreme has the pipe that absorbs water (23), the one end that the inside top of pipe that absorbs water (23) is close to suction box (14) articulates through articulated shaft (22) has second baffle (24), and the inside bottom of pipe that absorbs water (23) of second baffle (24) one side installs dog (25), dog (25) are kept away from pipe (23) internally mounted that absorbs water of second baffle (24) one side has second screen cloth (21), the inside lower extreme horizontal installation of suction box (14) has first screen cloth (13), and one side horizontal installation that suction box (14) lower extreme is close to second pneumatic cylinder (9) has outlet pipe (12), the both ends on suction box (14) top all are provided with air vent (15), and the intermediate position department on suction box (14) top is vertical installs first pneumatic cylinder (1), vertical first hydraulic cylinder (2) of running through suction box (14) top of installing of first pneumatic cylinder (1) output, and rubber bowl (3) are installed to the bottom of first hydraulic cylinder (2).
2. The high-pressure pumping equipment for the construction of the shallow sand precipitation well as claimed in claim 1, wherein: metal pole (4) pass through and constitute telescopic machanism between spring (5) and sleeve (8), and metal pole (4), spring (5) and sleeve (8) all are provided with three groups to every metal pole of group (4), spring (5) and sleeve (8) all are provided with threely, and every metal pole of group (4), spring (5) and sleeve (8) all set up about the axis symmetry of pumping box (14) simultaneously.
3. The high-pressure pumping equipment for the construction of the shallow sand precipitation well as claimed in claim 1, wherein: the cross section of the rubber bowl (3) is arc-shaped.
4. The high-pressure pumping equipment for the construction of the shallow sand precipitation well as claimed in claim 1, wherein: the first baffle (19) forms a sliding mechanism through the sliding block (20) and the sliding rail (26), and the sliding block (20) and the sliding rail (26) are provided with two.
5. The high-pressure pumping equipment for the construction of the shallow sand precipitation well as claimed in claim 1, wherein: the second baffle (24) forms a rotating mechanism through a hinged shaft (22) and the water suction pipe (23).
6. The high-pressure pumping equipment for the construction of the shallow sand precipitation well as claimed in claim 1, wherein: the number of the vent holes (15) is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811505198.3A CN109595134B (en) | 2018-12-10 | 2018-12-10 | High-pressure pumping equipment for shallow sand layer dewatering well construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811505198.3A CN109595134B (en) | 2018-12-10 | 2018-12-10 | High-pressure pumping equipment for shallow sand layer dewatering well construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109595134A CN109595134A (en) | 2019-04-09 |
| CN109595134B true CN109595134B (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811505198.3A Active CN109595134B (en) | 2018-12-10 | 2018-12-10 | High-pressure pumping equipment for shallow sand layer dewatering well construction |
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| Country | Link |
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| CN (1) | CN109595134B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110616729B (en) * | 2019-09-29 | 2021-03-16 | 浙江海洋大学 | Construction method for deformation control of deep foundation pit of slope high-rise building |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4515517A (en) * | 1983-05-25 | 1985-05-07 | Sloan Albert H | Well point system and apparatus |
| CN105889011A (en) * | 2016-06-17 | 2016-08-24 | 碎得机械(北京)有限公司 | Tubular single-plunger pump |
| CN207229375U (en) * | 2017-09-16 | 2018-04-13 | 王彦朝 | A kind of automatic dewatering and drainage device of construction of hydro project |
| CN209194686U (en) * | 2018-09-25 | 2019-08-02 | 福建华航建设集团有限公司 | Underground sumping device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10167607B2 (en) * | 2015-09-23 | 2019-01-01 | James M. Pratt | Drainage system with contiguous void |
-
2018
- 2018-12-10 CN CN201811505198.3A patent/CN109595134B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4515517A (en) * | 1983-05-25 | 1985-05-07 | Sloan Albert H | Well point system and apparatus |
| CN105889011A (en) * | 2016-06-17 | 2016-08-24 | 碎得机械(北京)有限公司 | Tubular single-plunger pump |
| CN207229375U (en) * | 2017-09-16 | 2018-04-13 | 王彦朝 | A kind of automatic dewatering and drainage device of construction of hydro project |
| CN209194686U (en) * | 2018-09-25 | 2019-08-02 | 福建华航建设集团有限公司 | Underground sumping device |
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| CN109595134A (en) | 2019-04-09 |
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Effective date of registration: 20200528 Address after: 350013 No.68 Xifeng Road, Jin'an District railway station, Fuzhou City, Fujian Province Applicant after: Sinochem Mingda (Fujian) Geological Survey Co., Ltd. Address before: 350013 Fujian province Fuzhou City Train Station West Road No. 68 Applicant before: FUJIAN INSTITUTE OF GEOLOGICAL SURVEY, CHINA CHEMICAL GEOLOGY AND MINE BUREAU |
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