CN202007402U

CN202007402U - Integrated light well plastic draining and precipitating well point pipe

Info

Publication number: CN202007402U
Application number: CN201120087565XU
Authority: CN
Inventors: 叶吉
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-30
Filing date: 2011-03-30
Publication date: 2011-10-12
Anticipated expiration: 2021-03-30

Abstract

The utility model relates to an integrated light well plastic draining and precipitating well point pipe, which is used for vacuum precipitation construction on a soft-soil foundation bed. The integrated light well plastic draining and precipitating well point pipe comprises a light type well point pipe (1) and a plastic draining plate (2), wherein the light type well point pipe (1) is inserted into the side where the plastic draining plate (2) is located; and one side of the light type well point pipe (1) is tightly attached to the plastic draining plate (2) to form the integrated light well plastic draining and precipitating well point pipe. By using the integrated light well plastic draining and precipitating well point pipe, the problem in the conventional foundation pit that multistage precipitation is needed to achieve the purpose is solved; and the time, labor and energy economization and high efficiency are achieved. In the large-area precipitation construction, particularly in the construction by combining the precipitation with the heavy-tamping method, the groundwater can be precipitated to meet the needed requirements and the requirement for large-area reinforcing treatment, so that reliable guarantee for the treatment and the design in the combination of the large-area ultra-soft foundation precipitation and the heavy-tamping method is provided.

Description

The light well plastic strip of integral type precipitation well point pipe

Technical field

The utility model relates to a kind of well point pipe.Be used for soft foundation and carry out the vacuum-dewatering construction.Possession base processing technology field.

Background technology

China carries out in the vacuum-dewatering work progress soft foundation at present, no matter be that foundation pit dewatering or large tracts of land reduce underground water, owing to be subjected to the restriction of well point, the length of general well point all is set to 6.0～8.0m, as can't construct then owing to the difficulty of weight and height in the well point of extending.For this reason, often take the method for classification precipitation, promptly after groundwater table is reduced to 4.0～6.0m, excavate one deck, and then insert light well point precipitation, multistage like this precipitation is to reach required requirement.Owing to need take multistage precipitation just can reach required effect, therefore cause a large amount of equipment, the waste of electric power.And because multistage precipitation need repeat to insert, tube pulling, need with artificial many, so this method speed is slow, effect is little, and the time is long; And, can't as foundation pit dewatering, carry out multistage precipitation for large tracts of land precipitation at all, and the multilayer excavation, the following soil body water content of 4.0～6.0m is higher, can't reach the designing requirement of ground stabilization, and is therefore, powerless to the following soil stabilization of 4.0～6.0m.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, provide a kind of and can solve existing foundation pit dewatering and need multistage precipitation just can achieve the goal, and save time, the well point pipe of saving of labor, efficient energy-saving.

The purpose of this utility model is achieved in that the light well plastic strip of integral type precipitation well point pipe, comprise light well point pipe and plastic draining board, the light well point pipe inserts the plastic draining board side, and light well point pipe one side closes with the tight card of plastic draining board, forms the light well plastic strip of integral type precipitation well point and manages.

The utility model reduces underground water fast by the light well plastic strip of integral type well point, utilizes plastic draining board to form underground passage simultaneously and carries out deep layer precipitation; Extension by this well point reaches once inserts the well point pipe and just can satisfy the dark requirement of falling of design.Can not only solve existing foundation pit dewatering needs multistage precipitation just can achieve the goal, and save time, saving of labor, efficient energy-saving; In like manner, in the large tracts of land dewatering construction, particularly precipitation is constructed in conjunction with dynamic compaction, underground water can be reduced to necessary requirement, satisfy the requirement of large tracts of land consolidation process, thereby the processing and the design of rammer worker method provide reliable guarantee by force for the combination of large tracts of land ultra-soft foundation precipitation.Employing the utility model construction safety coefficient is big, the duration short, and cost is low, and the work efficiency height has made things convenient for the construction of foundation pit dewatering and large tracts of land ultra-soft foundation place vacuum well-point dewatering.

The beneficial effects of the utility model are:

1, solved the disposable difficult problem that can't reach 6.0m deeply of falling of the present light well point precipitation of China, because plastic draining board can reach required falling deeply after, once inserting required light well plastic strip well point length at the vertical drain that the soil body forms.For foundation ditch deep layer precipitation has been created condition, for the reinforcing of large tracts of land ground takes the precipitation dynamic compaction that reliable deep level of processing condition is provided.

2, to the different levels geology of complexity, tradition light well point precipitation silts the well point filter easily up, cause " dead pipe ", take the light well plastic strip of integral type well point, because formed vertical drain in the soil body, and the flat shape of plastic draining board, suitable precipitation time added, can satisfy different soil properties and reach the required optimum moisture content requirement of consolidation process, not be subjected to the restriction of soft foundation geological conditions.Satisfy the requirement that reduces underground water and soil body water content fast, thereby provide effective quality assurance for the follow-up construction of soft foundation.

3, construction is simple and convenient, the cost performance height: owing to insert the light well point pipe immediately behind the injection plastic draining board, utilized the function of board-plugging device pore-forming, killed two birds with one stone, therefore made slotting well point tube side just practical, equipment is not finished and is inserted the light well point pipe in addition.

4, the light well plastic strip of this integral type well point is when implementing electroosmosis dewatering to the mucky soil body, then can tie up bare aluminium wire in light well point (iron pipe) bottom, insert desired depth with plastic draining board pore-forming, can't extend the effect that reaches the deep layer electroosmosis dewatering thereby solved the electroosmosis dewatering well point.Therefore, the light well plastic strip of integral type well point has solved the difficulty that light well points such as vacuum-dewatering, electroosmosis dewatering can't reach deep layer precipitation.

Description of drawings

Fig. 1 is the light well plastic strip of a utility model integral type precipitation well point tubular structure schematic diagram.

Fig. 2 is an Application Example schematic diagram of the present utility model.

Reference numeral among the figure:

Light well point pipe 1, light well point pipe filter 11;

Plastic draining board 2

The face of land 3

Tie up bare aluminium wire 4, bare aluminium wire extension line 41.

The specific embodiment

Referring to Fig. 1, Fig. 1 is the light well plastic strip of a utility model integral type precipitation well point tubular structure schematic diagram.As seen from Figure 1, the light well plastic strip of the utility model integral type precipitation well point pipe comprises: light well point pipe 1 and plastic draining board 2, and light well point pipe 1 inserts plastic draining board 2 sides, and light well point pipe 1 one sides and plastic draining board 2 tight cards close, and form the light well plastic strip of integral type precipitation well point pipe.

Fig. 2 is an Application Example schematic diagram of the present utility model.Among Fig. 2: tie up bare aluminium wire 4, bare aluminium wire extension line 41.

Work progress is as follows:

1, according to groundwater table and soil property situation, arrange precipitation well point spacing and precipitation depth, enter and insert plastic draining board machinery, the injection plastic draining board, the length of plastic draining board is required precipitation depth.Should be when the injection plastic draining board according to the scope of transmission coefficient decision plastic draining board under the top layer of top layer soil property, generally 1.0～2.0m place cuts off under the face of land, do not make plastic draining board expose the face of land, in case vacuumize gas leakage, the precipitation depth of the light well plastic strip of integral type well point generally can reach 15m～20m.

When 2, squeezing into plastic draining board, prepare the light well point pipe, the length of light well point pipe is generally 4.0m～6.0m, and the light well point pipe is used in being made as of light well point always; After plastic draining board is squeezed into soil body desired depth, board-plugging device is transferred to, and soil body this moment pore-forming drops into off-the-shelf light well point pipe immediately in the hole, and light well point pipe one side must be closed with the tight card of plastic draining board, and with the face of land under the plastic draining board at the 1.0～2.0m place formula well point that fuses.

3, after insert the integral type well point, according to soil property or designing requirement, drop into medium coarse sand to 0.5m place, the face of land in the hole, top layer 0.5m is real with the clay envelope, and the face of land does not leak gas and influences dewatering effect when vacuumizing.

4, finish integral type well point construction by above 1～3 after, to carry out the equipment trial run after each well point connection, when trial run is drawn water, start vacuum pump earlier, moisture separator is pumped into to a certain degree vacuum, make moisture and air in the soil be subjected to the pull of vacuum effect to form gas-vapor mix liquid, system and strainer enter in the moisture separator by the road, after start centrifugal pump, the water in the moisture separator is discharged by outlet pipe through centrifugal pump, air then concentrates on moisture separator top and is discharged by vacuum pump.By the trial run of drawing water, concentrate personnel to detect and shutoff gas leakage, guarantee the vacuum of pipeline, and arrangement special messenger's walkaround inspection pipe-line system and the vacuum of precipitation apparatus and the operating condition of equipment, find that gas leakage or equipment are undesired, repairing in time, the decline efficient of guaranteed water level.

Claims

1. manage the light well plastic strip of integral type precipitation well point, it is characterized in that: it comprises light well point pipe (1) and plastic draining board (2), light well point pipe (1) inserts plastic draining board (2) side, and light well point pipe (1) one side and plastic draining board (2) closely card close, and form the light well plastic strip of integral type precipitation well point pipe.