CN111894061A - Grooving equipment with joint flushing device and construction method - Google Patents
Grooving equipment with joint flushing device and construction method Download PDFInfo
- Publication number
- CN111894061A CN111894061A CN202010758288.4A CN202010758288A CN111894061A CN 111894061 A CN111894061 A CN 111894061A CN 202010758288 A CN202010758288 A CN 202010758288A CN 111894061 A CN111894061 A CN 111894061A
- Authority
- CN
- China
- Prior art keywords
- pressure
- joint
- wall
- flushing device
- flushing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/08—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
- E02F5/14—Component parts for trench excavators, e.g. indicating devices travelling gear chassis, supports, skids
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a grooving equipment with a joint flushing device and a construction method. This high pressure washing unit installs at the frame lower extreme, make full use of frame dead weight advantage, be difficult for taking place the swing when meeting cell wall barrier, it is also unrestricted to be suitable for the groove depth, clear groove during operation in the frame, brush the wall process and go on simultaneously, and accomplish alone from two original processes and become a process and accomplish two kinds of work, shorten construction process joining time, saved loop wheel machine or other hoist systems and brushed the wall operation, when having solved the work cost of brushing the wall, hard problem, save a large amount of manpowers, material resources, financial resources. The high-pressure flushing device is used in the wall brushing process, and high-pressure jet flow is utilized to act on the joint of the underground diaphragm wall, so that attached sludge and mud skin fall off and suspend in the wall protection slurry, the purpose of brushing the joint is achieved, the brushing effect of the joint is improved, and the construction quality is ensured.
Description
Technical Field
The invention relates to the field of underground diaphragm wall construction, in particular to grooving equipment with a joint flushing device and a construction method.
Background
The construction method for grooving the underground diaphragm wall by using the double-wheel groove milling machine is widely applied to supporting of projects such as water conservancy and hydropower projects, municipal works, house buildings and the like. The unit groove sections of the underground continuous wall are connected by joints, which have both force transmission and seepage-proofing functions and are the weak parts of the underground continuous wall. In the process of trenching construction, the wall-protecting slurry can form mud skin on the trench wall and the joint, and the mud is clamped or continuous mud skin exists at the joint, so that the strength of the joint is weakened, and a water seepage channel is formed.
At present, the joint type of the underground diaphragm wall mainly adopts a fore shaft pipe connection, an I-shaped steel joint, a sleeve milling joint and the like. The joint is brushed by a wall brushing device, the working principle is that the side pressure generated by the self weight of the wall brushing device acts on the wall of the joint, and under the traction of external force, the steel brush vertically moves up and down along the wall of the joint to remove sludge and mud skin at the joint part of the underground diaphragm wall. However, the wall brushing weight is light, the wall brushing is easy to swing when meeting obstacles, the wall brushing process is complicated, the brushing effect is not ideal, the wall brushing work of a deeper groove cannot be realized, the problems of mud clamping, water seepage and the like exist in the underground continuous wall joint, and the integrity and the use function of the wall are seriously influenced.
Disclosure of Invention
The invention aims to solve at least one technical problem in the prior art, and provides grooving equipment with a joint flushing device and a construction method, which are convenient for joint brushing.
The technical scheme adopted by the invention is as follows: a trenching apparatus with joint flushing apparatus comprising:
a frame; and
high pressure washing unit, including high pressure nozzle, connection support, water pipe shunt, high-pressure pipe and high-pressure pump, this connection support sets up the outside lower extreme in the frame, and this water pipe shunt sets up on connecting the support, and this high pressure nozzle sets up on the water pipe shunt and towards the connector wall, and this high-pressure pump passes through high-pressure union coupling water pipe shunt, and this water pipe shunt guides rivers from high pressure nozzle blowout.
Has the advantages that: the high-pressure flushing device is arranged at the lower end of the frame, the self-weight advantage of the frame is fully utilized, the high-pressure flushing device is not easy to swing when meeting obstacles on the wall of the groove, the applicable groove depth is not limited, the high-pressure flushing device is suitable for all joint type underground continuous walls, and the construction cost can be reduced to the maximum extent. The grooving equipment with the joint flushing device utilizes high-pressure jet flow to act on the joint of the underground diaphragm wall, so that attached sludge and mud skin fall off and are suspended in the wall protection slurry, and the aim of brushing the joint is fulfilled. This grooving equipment with connect washing unit structure is simple and easy, and the implementation process need not additionally to occupy other equipment resources, avoids adopting loop wheel machine or other hoist system to brush the wall operation, has solved and has brushed the wall working cost time, hard problem, saves a large amount of manpower, material resources, financial resources to the tank bottom scarfing cinder is gone on with connecting the scrubbing operation in step, has saved solitary brush wall process, shortens the construction process linking time greatly, improves and connects the scrubbing effect, guarantees construction quality.
Further, this grooving equipment with connect washing unit still includes portable high-pressure pipe support platform truck, and this high-pressure pipe of this portable high-pressure pipe support platform truck drive realizes receiving and releasing the motion, and this portable high-pressure pipe support platform truck sets up between high-pressure pump and frame.
Furthermore, an included angle is formed between the high-pressure nozzle and the horizontal plane and is set between 25 degrees and 30 degrees.
Further, the diameter of the high-pressure nozzle is set between 1.5mm and 1.9 mm.
Further, the grooving equipment with the joint flushing device adopts a double-wheel groove milling machine, and the double-wheel groove milling machine further comprises a control turning plate which is arranged on the outer side of the lower end of the rack and faces the joint wall.
Furthermore, two groups of high-pressure flushing devices are arranged on the double-wheel slot milling machine, the lower ends of the left outer side and the right outer side of the rack are respectively provided with a control turning plate, and the two groups of high-pressure flushing devices are respectively arranged on the control turning plates on the left side and the right side.
A construction mode is suitable for grooving equipment with a joint flushing device, and comprises the following steps:
(1) after the grooving equipment finishes grooving operation, stopping milling, and lifting the rack to the orifice;
(2) a high-pressure flushing device is arranged at the lower end of the frame, and the installation direction of the high-pressure flushing device is inclined downwards;
(3) connecting a high-pressure flushing device with a high-pressure pump through a high-pressure pipe;
(4) starting a high-pressure pump, slowly and uniformly lowering the rack to the bottom of the tank, enabling water flow conveyed by the high-pressure pump to pass through a high-pressure pipe to reach a high-pressure nozzle at a high-pressure washing device, and washing slag and mud skin attached to a joint by sprayed high-pressure jet flow to enable the slag and mud skin to fall off and suspend in wall protection slurry;
(5) judging the hole cleaning operation effect of the groove section according to the slag quantity and the detection result of the wall protection slurry performance index;
(6) and (4) quickly lifting the rack to the orifice, closing the high-pressure pump, and removing the high-pressure flushing device after the pressure in the pipe is dissipated to complete the flushing operation of the joint.
Has the advantages that: according to the construction method, the processes of cleaning the groove and brushing the wall are combined, the high-pressure flushing device is arranged on the lower portion of the frame to brush the wall, the wall brushing operation of the wall brushing steel wires matched with a crane or other hoisting systems is avoided, the problems of time and labor waste of wall brushing work are solved, a large amount of manpower, material resources and financial resources are saved, the construction process linking time is greatly shortened, the joint brushing effect is improved, and the construction quality is guaranteed.
Further, in the step (4), the pumping pressure is adjusted to 0.8 MPa-1.0 MPa, and the flow rate is less than 75L/min.
Further, in step (6), a second flush is performed during the lifting of the frame to the orifice.
Drawings
The invention is further illustrated with reference to the following figures and examples:
FIG. 1 is a schematic diagram of an overall apparatus according to an embodiment of the present invention;
fig. 2 is a schematic view of a high pressure flushing device according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 and 2, a grooving apparatus with a joint flushing device according to an embodiment of the present invention mainly comprises a frame 1 and a high-pressure flushing device 2. The high-pressure flushing device 2 comprises a high-pressure nozzle 201, a connecting support 203, a water pipe diverter 202, a high-pressure pipe 6 and a high-pressure pump 7. The connection support 203 is installed at the outer side of the lower end of the machine frame 1, and the water pipe diverter 202 is fixed to the connection support 203 by a screw 204. The water pipe diverter 202 is provided with a plurality of through holes for installing the high pressure nozzles 201, the plurality of high pressure nozzles 201 are welded on the water pipe diverter 202 and face the joint wall 4, and the high pressure nozzles 201 are inclined downwards. The high-pressure pump 7 is connected to a water pipe diverter 202 through a high-pressure pipe 6, and the water pipe diverter 202 guides the water flow to be sprayed out from the high-pressure nozzle 201. The high-pressure flushing device 2 is arranged at the lower end of the rack 1, the self-weight advantage of the rack 1 is fully utilized, the swinging is not easy to occur when the tank wall barrier is encountered, the applicable tank depth is not limited, and the high-pressure flushing device is suitable for all joint type underground continuous walls. When the groove cleaning work is carried out in the frame 1, the wall brushing process is carried out simultaneously, the wall brushing of a deeper groove can be realized, the joint which is arranged at the bottom end of the frame 1 and can be washed to the bottom end of the frame 1 is installed, and the two processes are changed into one process to complete two kinds of work from the original two processes, the construction process linking time is greatly shortened, a crane or other hoisting systems are saved for wall brushing operation, the problem of labor waste in wall brushing work cost is solved, and a large amount of manpower, material resources and financial resources are saved. This brush wall in-process uses high-pressure washing unit 2, utilizes high-pressure efflux, acts on underground diaphragm wall and connects the department for adnexed sediment mud and mud skin drop, and suspend in dado mud, reach the purpose that the joint was scrubbed, improved the scrubbing effect of joint, guaranteed construction quality. The high-pressure flushing device 2 in the grooving equipment with the joint flushing device can be processed and manufactured according to the groove thickness size.
Preferably, the trenching equipment with the joint flushing device further comprises a movable high-pressure pipe frame trolley 5, the movable high-pressure pipe frame trolley 5 drives the high-pressure pipe 6 to realize retraction movement, and the movable high-pressure pipe frame trolley 5 is arranged between the high-pressure pump 7 and the frame 1. Specifically, the mobile high-pressure pipe rack trolley 5 comprises a trolley chassis 501, a pipe rack turntable 502, a guide pulley 505, a gear reducer and a high-pressure rotary joint 503, wherein the pipe rack turntable 502 is rotatably connected above the trolley chassis 501, the guide pulley 505 is mounted on the trolley chassis 501, and the guide pulley 505 guides the retraction and release movement of the high-pressure pipe 6. The gear reducer 504 is fixedly connected to the trolley chassis 501, the gear reducer 504 drives the pipe rack rotary table 502 to rotate, the high-pressure pipe 6 is wound on the pipe rack rotary table 502, the high-pressure rotary joint 503 is mounted at the rotation center of the pipe rack rotary table 502, and the high-pressure rotary joint 503 is communicated with the high-pressure pump 7 through the high-pressure pipe 6. When the wall brushing work is performed, the gear reducer 504 drives the pipe rack turntable 502 to rotate, so as to drive the high-pressure pipe 6 on the pipe rack turntable 502 to perform the pipe placing movement, when the rack 1 moves downwards, the pipe rack turntable 502 rotates towards one direction to perform the pipe placing movement, and when the rack 1 moves upwards, the pipe rack turntable 502 rotates towards the other direction to perform the pipe receiving movement. The movable high-pressure pipe support trolley 5 is arranged on the ground above the slotted hole and positioned between the rack 1 and the high-pressure pump 7 to assist in the retraction of the high-pressure pipe 6, and a roller device is further arranged below the movable high-pressure pipe support trolley 5 to realize movement.
Preferably, the high pressure nozzle 201 is arranged with an angle between 25 ° and 30 ° with the horizontal plane. The direction of the installed high-pressure nozzle 201 is slightly inclined downwards, so that the sprayed high-pressure jet flows downwards to wash the joint obliquely, the brushing effect of the joint is improved, and the construction quality is ensured. When the included angle is set between 25 degrees and 30 degrees, the cleaning effect of the joint is optimal.
Preferably, the diameter of the high pressure nozzle 201 is set between 1.5mm and 1.9 mm.
Preferably, the grooving apparatus with joint flushing device employs a two-wheel groove milling machine, which further comprises a control flap 3, the control flap 3 being mounted outside the lower end of the machine frame 1 and facing the joint wall 4. The connecting support 203 is fixedly connected to the control flap 3. The slag and mud skin washed by wall brushing work are suspended in the wall protection mud, and can be discharged by a double-wheel slot milling machine with a reverse circulation mud system. In particular, the grooving equipment with the joint flushing device can also adopt a grab bucket machine.
Preferably, two sets of high-pressure flushing devices 2 are installed on the double-wheel slot milling machine, the control turning plate 3 is installed at the lower ends of the left outer side and the right outer side of the rack 1, and the two sets of high-pressure flushing devices 2 are installed on the control turning plate 3 on the left side and the right side respectively. The high pressure pipe 6 is divided into two paths when extending to the bottom end of the frame 1, and the two paths are respectively communicated with the water pipe shunts 202 on the two sides. Both sides are provided with the high-pressure flushing devices 2 which can flush the joints on both sides simultaneously, thereby improving the wall brushing efficiency and shortening the time of the wall brushing process.
The invention provides a construction mode, which is suitable for grooving equipment with a joint flushing device, and specifically comprises the following steps:
(1) after the grooving equipment finishes grooving operation, stopping milling, and lifting the rack 1 to an orifice;
(2) a high-pressure washing device 2 is arranged at the lower end of the frame 1, and the installation direction of the high-pressure washing device is inclined downwards;
(3) the high-pressure flushing device 2 is connected with a high-pressure pump 7 through a high-pressure pipe 6;
(4) starting the high-pressure pump 7, slowly and uniformly lowering the rack 1 to the bottom of the tank, enabling water flow conveyed by the high-pressure pump 7 to pass through the high-pressure pipe 6 to the high-pressure nozzle 201 at the high-pressure flushing device 2, and flushing sludge and mud skin attached to a joint by sprayed high-pressure jet flow to enable the sludge and the mud skin to fall off and suspend in the wall protection slurry;
(5) judging the hole cleaning operation effect of the groove section according to the slag quantity and the detection result of the wall protection slurry performance index;
(6) and (3) quickly lifting the frame 1 to the orifice, closing the high-pressure pump 7, and removing the high-pressure flushing device 2 after the pressure in the pipe is dissipated to finish the flushing operation of the joint.
According to the construction method, the processes of cleaning the groove and brushing the wall are combined, the high-pressure flushing device 2 is installed on the lower portion of the rack 1 for brushing the wall, the wall brushing operation of the wall brushing steel wires matched with a crane or other hoisting systems is avoided, the problem that the wall brushing operation is time-consuming and labor-consuming is solved, a large amount of manpower, material resources and financial resources are saved, the construction process linking time is greatly shortened, the joint brushing effect is improved, and the construction quality is guaranteed.
Preferably, in the step (4), the pumping pressure is adjusted to 0.8MPa to 1.0MPa, and the flow rate is less than 75L/min. Compare through the multiunit experiment, set up this pumping pressure and flow parameter and can obtain better joint scrubbing effect, and practice thrift the cost, under this operating mode condition, the high-pressure rivers that form can not produce the negative effect to underground continuous wall body itself.
Preferably, step (6) is performed by a second flush during the lifting of the frame 1 to the aperture.
The invention has carried on the engineering application example to the rigid joint of the diaphragm wall, cover and mill the joint and verify, provide an embodiment and regard shield of certain large-scale project to work the well as an example, wherein, the first shield is for the square shaft, the foundation ditch supports and adopts the diaphragm wall and scheme of four inner supports of 800mm and 1000mm of thickness, the diaphragm wall joint uses the joist steel to connect, the construction depth is 23.7-28.0 m; the second shield working well is a circular vertical well, the scheme that an underground continuous wall and a concrete lining wall with the thickness of 1200mm are adopted for foundation pit support, the joint type of the underground continuous wall is a milling joint, and the construction groove depth is 75.48m and 77.98 m.
In the embodiment, the grooving equipment with the joint flushing device and the construction method are applied, and in the implementation process, two processes of cleaning the bottom of the groove and brushing the wall are perfectly combined into one, so that the process connection time is shortened; the advantages of advanced equipment are fully utilized, so that the whole operation process is more intelligent. The invention is applicable to any joint type regardless of the depth of the groove section. The invention adopts high-pressure water as a medium, thereby saving energy, protecting environment, having high cleaning efficiency, low cost, no corrosion to equipment and no pollution to underground space environment, and having remarkable economic and social benefits.
While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (9)
1. A trenching apparatus with joint flushing apparatus, comprising:
a frame; and
high pressure washing unit, including high pressure nozzle, connection support, water pipe shunt, high-pressure pipe and high-pressure pump, the connection support sets up the outside lower extreme in the frame, the water pipe shunt sets up on connecting the support, high pressure nozzle sets up on the water pipe shunt and towards the joint wall, the high-pressure pump passes through high-pressure union coupling water pipe shunt, the water pipe shunt guides rivers from the high pressure nozzle blowout.
2. A grooving apparatus with joint flushing means as claimed in claim 1, wherein: the grooving equipment with the joint flushing device further comprises a movable high-pressure pipe frame trolley, the movable high-pressure pipe frame trolley drives the high-pressure pipe to realize retraction and release movement, and the movable high-pressure pipe frame trolley is arranged between the high-pressure pump and the rack.
3. A grooving apparatus with joint flushing means as claimed in claim 1, wherein: and an included angle is formed between the high-pressure nozzle and the horizontal plane and is set between 25 degrees and 30 degrees.
4. A grooving apparatus with joint flushing means as claimed in claim 1, wherein: the diameter of the high-pressure nozzle is set between 1.5mm and 1.9 mm.
5. A grooving apparatus with joint flushing device according to any one of claims 1-4, wherein: the grooving equipment with the joint flushing device adopts a double-wheel groove milling machine, the double-wheel groove milling machine further comprises a control turning plate, and the control turning plate is arranged on the outer side of the lower end of the rack and faces the joint wall.
6. A grooving apparatus with joint flushing means according to claim 5, wherein: the double-wheel slot milling machine is characterized in that two groups of high-pressure flushing devices are arranged on the double-wheel slot milling machine, the lower ends of the left outer side and the right outer side of the rack are respectively provided with a control turning plate, and the two groups of high-pressure flushing devices are respectively arranged on the control turning plates on the left side and the right side.
7. A construction mode applicable to the grooving apparatus with the joint flushing device according to any one of claims 1 to 6, comprising the steps of:
(1) after the grooving equipment finishes grooving operation, stopping milling, and lifting the rack to the orifice;
(2) a high-pressure flushing device is arranged at the lower end of the frame, and the installation direction of the high-pressure flushing device is inclined downwards;
(3) connecting a high-pressure flushing device with a high-pressure pump through a high-pressure pipe;
(4) starting a high-pressure pump, slowly and uniformly lowering the rack to the bottom of the tank, enabling water flow conveyed by the high-pressure pump to pass through a high-pressure pipe to reach a high-pressure nozzle at a high-pressure washing device, and washing slag and mud skin attached to a joint by sprayed high-pressure jet flow to enable the slag and mud skin to fall off and suspend in wall protection slurry;
(5) judging the hole cleaning operation effect of the groove section according to the slag quantity and the detection result of the wall protection slurry performance index;
(6) and (4) quickly lifting the rack to the orifice, closing the high-pressure pump, and removing the high-pressure flushing device after the pressure in the pipe is dissipated to complete the flushing operation of the joint.
8. The construction method according to claim 7, wherein: in the step (4), the pumping pressure is adjusted to 0.8 MPa-1.0 MPa, and the flow is less than 75L/min.
9. The construction method according to claim 7, wherein: and (6) carrying out secondary flushing in the process of lifting the rack to the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010758288.4A CN111894061A (en) | 2020-07-31 | 2020-07-31 | Grooving equipment with joint flushing device and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010758288.4A CN111894061A (en) | 2020-07-31 | 2020-07-31 | Grooving equipment with joint flushing device and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111894061A true CN111894061A (en) | 2020-11-06 |
Family
ID=73182937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010758288.4A Pending CN111894061A (en) | 2020-07-31 | 2020-07-31 | Grooving equipment with joint flushing device and construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111894061A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116104094A (en) * | 2023-04-13 | 2023-05-12 | 广东水电二局股份有限公司 | Ultra-deep underground continuous wall underwater self-compacting concrete and construction method thereof |
-
2020
- 2020-07-31 CN CN202010758288.4A patent/CN111894061A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116104094A (en) * | 2023-04-13 | 2023-05-12 | 广东水电二局股份有限公司 | Ultra-deep underground continuous wall underwater self-compacting concrete and construction method thereof |
| CN116104094B (en) * | 2023-04-13 | 2023-09-22 | 广东水电二局股份有限公司 | Ultra-deep underground continuous wall underwater self-compacting concrete and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109629561A (en) | A kind of high trestle operation platform reacting cycle pile system of clean and environmental protection | |
| CN111894061A (en) | Grooving equipment with joint flushing device and construction method | |
| CN111926817A (en) | Component for cleaning and pumping mud in pile, mud pumping equipment and method | |
| CN212612718U (en) | Grooving equipment with joint flushing device | |
| CN112065425B (en) | Muddy water balance type pipe jacking equipment and construction process thereof on sandstone superposed layer | |
| CN112502174A (en) | Quick dewatering device for deep foundation pit | |
| CN110886335B (en) | Block rock mass digs rock-entering construction grooving machine | |
| CN111842451B (en) | Modularized underground water permeable reactive pile and implementation method thereof | |
| CN106836215A (en) | Inside and outside hydraulic pressure autobalance steel pile casting | |
| CN103174895A (en) | Cutter suction dredger over-water floating pipe hydraulic fast connector | |
| CN209483247U (en) | Boring mud Sediment filter box for high trestle operation platform reacting cycle pile system | |
| CN203131277U (en) | Hydraulic quick coupling for floating pipe and cutter suction dredger | |
| CN202954578U (en) | Structure for connecting tilted stair with rest platform of prefabricated assembled detachable type foundation pit ladder | |
| CN111842452B (en) | Permeable reactive barrier, box structure and reactive barrier implementation method | |
| CN211523180U (en) | Rotary spraying water stopping device for underground continuous wall joint | |
| CN206784451U (en) | It is a kind of to be used to anti-gush blowout water installations in anchor pole pore forming process | |
| CN111425133A (en) | Dewatering well construction device and construction method thereof | |
| CN213223444U (en) | Bridge is instrument cleaning equipment for construction | |
| CN206385582U (en) | A kind of deep water intelligently digs sapin platform | |
| CN217556930U (en) | Slurry flow guiding device and flow guiding system for construction of water cast-in-place pile | |
| CN104727268A (en) | Water diversion pollutant flushing device for city watercourse and sewage treatment method thereof | |
| CN211640414U (en) | Prefabricated wallboard component upset washing system | |
| CN218376330U (en) | Borehole construction system and drilling equipment | |
| CN103174891A (en) | Quick connector of cutter suction dredger and water-borne pipe | |
| CN212294797U (en) | A portable multipurpose moves fortune device for city river desilting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |