阅读说明：本技术 一种降水施工方法 (A kind of dewatering construction method ) 是由 张书峰 金辽东 张婷 于 2019-08-05 设计创作，主要内容包括：本发明涉及一种降水施工方法,包括如下步骤：步骤S1、开挖降水井；步骤S2、在降水井内设置降水井过滤装置,其中,所述降水井过滤装置设置为由多个依次首尾相连的降水管构成,将相邻两个所述降水管之间的连接设置为可拆卸式连接,在所述降水管的管壁上开设多个透水孔,在所述降水管的外周壁上包覆第一过滤网,在所述降水井内最下方的降水管的底端设置底部过滤结构；步骤S3、将潜水泵设于降水井过滤装置内的底部,潜水泵的排水管伸出降水井的外部；步骤S4、启动潜水泵对降水井进行降水。该降水施工方法,采用可重复利用的降水井过滤装置,降低了降水施工成本；降水井过滤装置可以从底部和降水管的管壁上同时过滤降水,提高了降水效率。(The present invention relates to a kind of dewatering construction methods, include the following steps: step S1, excavation and precipitation well；Step S2, dewatering well filter device is set in dewatering well, wherein, the dewatering well filter device is set as being made of multiple successively end to end downcomers, detachable connection is set by the connection between the two neighboring downcomer, multiple permeable holes are opened up on the tube wall of the downcomer, the first filter screen is coated on the periphery wall of the downcomer, bottom filtering structure is arranged in the bottom end of the downcomer of bottom in the dewatering well；Step S3, immersible pump is set to the bottom in dewatering well filter device, the drainpipe of immersible pump stretches out the outside of dewatering well；Step S4, starting immersible pump carries out precipitation to dewatering well.The dewatering construction method reduces dewatering construction cost using reusable dewatering well filter device；Dewatering well filter device can filter precipitation simultaneously from the tube wall of bottom and downcomer, improve precipitation efficiency.)

1. a kind of dewatering construction method, which comprises the steps of:

Step S1, excavation and precipitation well；

Step S2, dewatering well filter device is set in the dewatering well,

Wherein, the dewatering well filter device is set as being made of multiple successively end to end downcomers, by two neighboring institute The connection stated between downcomer is set as detachable connection, and multiple permeable holes are opened up on the tube wall of the downcomer, in institute It states and coats the first filter screen on the periphery wall of downcomer, bottom mistake is arranged in the bottom end of the downcomer of bottom in the dewatering well Filter structure；

Step S3, immersible pump is set to the bottom in the dewatering well filter device, described in the drainpipe of the immersible pump stretches out The outside of dewatering well；

Step S4, start the immersible pump and precipitation is carried out to the dewatering well.

2. dewatering construction method according to claim 1, which is characterized in that the step S1 includes:

Step S101, according to the design drawing of dewatering well, surveying setting-out, determines the drilling well position of dewatering well at the construction field (site)；

Step S102, the dewatering well for meeting projected depth and diameter is drilled out in determining drilling well position using drilling machinery.

3. dewatering construction method according to claim 1, which is characterized in that the step S2 includes the following steps:

Step S201, hanging device is set up above the well head of the dewatering well；

Step S202, the downcomer for being equipped with bottom filtering structure is sling using the hanging device, and makes setting for the downcomer Downward, which is transferred in the dewatering well for the one end for having bottom filtering structure；

Step S203, before being equipped with the other end of downcomer of bottom filtering structure and entering the dewatering well, by the downcomer The top of the dewatering well is vacantly set, slings another downcomer using the hanging device and is located in the dewatering well Downcomer link together；

Step S204, the downcomer to link together is transferred to the precipitation bottom, when the upper end of the downcomer of the top Into before the dewatering well, the downcomer to link together is vacantly arranged in the top of the dewatering well, is hung using described Standby another downcomer of slinging of installing links together with the downcomer positioned at the top in the dewatering well, recycles according to this, directly It is located at the bottom of the dewatering well to the downcomer for being equipped with bottom filtering structure.

4. dewatering construction method according to claim 3, which is characterized in that in the step S202, to the precipitation Before pipe lifting, the first filter screen is coated on the periphery wall of each downcomer, and bottom filtering structure is arranged at it In on a downcomer.

5. dewatering construction method according to claim 3, which is characterized in that in the periphery wall of the first end of the downcomer The upper multiple lifting lugs of setting, multiple lifting lugs are uniformly arranged along the circumferential direction of the downcomer, and hole for hoist, institute are offered on the lifting lug State axis of the axis perpendicular to the downcomer of hole for hoist, wherein the bottom filtering structure is set to the downcomer Second end,

When lifting using the hanging device to the downcomer, two hoist cables are connected on the hanging device, are used Two hoist cables are connected on two lifting lugs being oppositely arranged on the downcomer.

6. dewatering construction method according to claim 5, which is characterized in that the drop is vacantly arranged in the downcomer When the top of well, it is each passed through in the hole for hoist for two lifting lugs being oppositely arranged on the downcomer, is made using two cross bars With the cross bar by the downcomer vacantly at the top of the dewatering well, wherein the length of the cross bar is greater than the precipitation The well head diameter of well.

7. dewatering construction method according to claim 5, which is characterized in that the spiral shell in the first end of the downcomer is arranged External screw thread compatible with the internal screw thread of the first end of the downcomer is arranged in the second end of the downcomer in line,

It, will wherein one when assembling between two adjacent downcomers when assembling downcomer and forming the dewatering well filter device The external screw thread of a downcomer is screwed on the internal screw thread of another downcomer, to realize the assembling of downcomer.

8. dewatering construction method according to claim 7, which is characterized in that the bottom filtering structure include connecting tube, Steel wire and the second filter screen, the steel wire are set to one end of the connecting tube, and second filter screen is covered on described On steel wire, the connecting tube is equipped with internal screw thread compatible with the external screw thread of the downcomer second end,

When the bottom filtering structure is connect with the downcomer, by the internal screw thread in the connecting tube of the bottom filtering structure It is screwed on the external screw thread of the downcomer second end, so that the bottom filtering structure is fixedly connected on the downcomer On.

9. dewatering construction method according to claim 1, which is characterized in that in the external setting filter of first filter screen Net fixed structure is fixed on first filter screen on the downcomer through the filter screen fixing structure, wherein the strainer Fixed structure includes multiple vertical bars along downcomer axial direction arrangement,

By the multiple vertical bar being arranged circumferentially along the downcomer, the filter screen fixing structure is fixed using binding strap On the downcomer.

10. dewatering construction method according to claim 9, which is characterized in that will be multiple described perpendicular using multiple connecting bands Bar links into an integrated entity structure, and the length direction by the connecting band along the vertical bar is evenly arranged,

Wherein, the connecting band is soft connecting band.

Technical field

The present invention relates to base pit dewatering technical fields, more particularly, to a kind of dewatering construction method.

Background technique

Underground engineering construction is carried out in aquifer water-bearing stratum, often to carry out engineering dewatering first.In live dewatering construction, often The dewatering well that multiple diameters are 400~600mm is set at the construction field (site), plastic film capicitor is set in dewatering well, is seeped using shaft bottom Underground water is extracted underground water in mud in well and well out using immersible pump together.This traditional dewatering construction method plastic film capicitor Reuse can not be recycled after use, plastic screwed pipe instrumentation is easily damaged, and dewatering well is relatively large in diameter, and is only seeped by bottom Saturating underground water precipitation is slower, and precipitation efficiency is low, and precipitation bottom is easy to produce mud, and mud and underground water are extracted out together to be easy to make At immersible pump pipeline blockage.

Summary of the invention

In view of this, having been solved in existing dewatering construction the purpose of the present invention is to provide a kind of dewatering construction method Precipitation efficiency is low, the not re-usable technical problem of downcomer.

According to the present invention, a kind of dewatering construction method is provided, is included the following steps:

Step S1, excavation and precipitation well；

Step S2, dewatering well filter device is set in the dewatering well,

Wherein, the dewatering well filter device is set as being made of multiple successively end to end downcomers, by adjacent two Connection between a downcomer is set as detachable connection, and multiple permeable holes are opened up on the tube wall of the downcomer, The first filter screen is coated on the periphery wall of the downcomer, bottom is arranged in the bottom end of the downcomer of bottom in the dewatering well Portion's filter structure；

Step S3, immersible pump is set to the bottom in the dewatering well filter device, the drainpipe of the immersible pump stretches out The outside of the dewatering well；

Step S4, start the immersible pump and precipitation is carried out to the dewatering well.

Preferably, the step S1 includes:

Step S101, according to the design drawing of dewatering well, surveying setting-out, determines the well drilling positions of dewatering well at the construction field (site) It sets；

Step S102, the dewatering well for meeting projected depth and diameter is drilled out in determining drilling well position using drilling machinery.

Preferably, the step S2 includes the following steps:

Step S201, hanging device is set up above the well head of the dewatering well；

Step S202, the downcomer for being equipped with bottom filtering structure is sling using the hanging device, and makes the downcomer One end equipped with bottom filtering structure downward, which is transferred in the dewatering well；

Step S203, before being equipped with the other end of downcomer of bottom filtering structure and entering the dewatering well, by the drop The top of the dewatering well is vacantly arranged in water pipe, slings another downcomer using the hanging device and is located at the precipitation Downcomer in well links together；

Step S204, the downcomer to link together is transferred to the precipitation bottom, when the downcomer of the top Upper end enters before the dewatering well, and the downcomer to link together is vacantly arranged in the top of the dewatering well, uses institute It states hanging device and slings another downcomer and link together with the downcomer of the top in the dewatering well is located at, follow according to this Ring, until the downcomer for being equipped with bottom filtering structure is located at the bottom of the dewatering well.

Preferably, in the step S202, before to downcomer lifting, in the periphery wall of each downcomer The first filter screen of upper cladding, and bottom filtering structure is disposed therein on the downcomer.

Preferably, multiple lifting lugs are set on the periphery wall of the first end of the downcomer, and multiple lifting lugs are along the precipitation The circumferential direction of pipe is uniformly arranged, and hole for hoist is offered on the lifting lug, the axis of the hole for hoist is perpendicular to the downcomer Axis, wherein the bottom filtering structure is set to the second end of the downcomer, using the hanging device to the precipitation When pipe is lifted, two hoist cables are connected on the hanging device, are connected to the precipitation using two hoist cables On two lifting lugs being oppositely arranged on pipe.

Preferably, it when the top of the dewatering well is vacantly arranged in the downcomer, is each passed through using two cross bars In the hole for hoist for two lifting lugs being oppositely arranged on the downcomer, using the cross bar by the downcomer vacantly in the drop The top of well, wherein the length of the cross bar is greater than the well head diameter of the dewatering well.

Preferably, the downcomer first end be arranged internal screw thread, the downcomer second end setting with it is described The compatible external screw thread of the internal screw thread of the first end of downcomer, when assembling downcomer forms the dewatering well filter device, phase When assembling between two adjacent downcomers, the external screw thread of one of downcomer is screwed to the internal screw thread of another downcomer On, to realize the assembling of downcomer.

Preferably, the bottom filtering structure includes connecting tube, steel wire and the second filter screen, and the steel wire is set to One end of the connecting tube, second filter screen are covered on the steel wire, and the connecting tube is equipped with and the precipitation The compatible internal screw thread of the external screw thread of pipe second end, when the bottom filtering structure is connect with the downcomer, by the bottom Internal screw thread in the connecting tube of portion's filter structure is screwed on the external screw thread of the downcomer second end, thus by the bottom mistake Filter structure is fixedly connected on the downcomer.

Preferably, filter screen fixing structure is set in the external of first filter screen, makes described in the first filter screen warp Filter screen fixing structure is fixed on the downcomer, wherein the filter screen fixing structure includes multiple axial along the downcomer The vertical bar of direction arrangement, by the multiple vertical bar being arranged circumferentially along the downcomer, using binding strap by the strainer Fixed structure is fixed on the downcomer.

Preferably, multiple vertical bars are linked into an integrated entity structure using multiple connecting bands, and by the connecting band along institute The length direction for stating vertical bar is evenly arranged, wherein the connecting band is soft connecting band.

Dewatering well filter device, the dewatering well filtering is arranged in dewatering construction method provided by the invention in dewatering well Device is set as being made of multiple successively end to end downcomers, sets the connection between the two neighboring downcomer to Detachable connection can select appropriate number of downcomer to be attached according to the depth of dewatering well, and dewatering operation is completed Afterwards, downcomer can be taken out to recycling from dewatering well, reduce dewatering construction cost；The dewatering well filter device can To filter precipitation simultaneously from the tube wall of bottom and downcomer, drainage area is increased, precipitation efficiency is improved.

Detailed description of the invention

By referring to the drawings to the description of the embodiment of the present invention, above-mentioned and other purposes of the invention, feature and Advantage will be apparent from.

Fig. 1 shows the dewatering well draining schematic diagram of the embodiment of the present invention；

Fig. 2 shows the schematic perspective views of dewatering well filter device according to an embodiment of the present invention.

Fig. 3 and Fig. 4 is respectively the difference that bottom downcomer according to an embodiment of the present invention is connect with bottom filtering structure The schematic perspective view at visual angle.

Fig. 5 shows the schematic perspective view of downcomer in dewatering well filter device according to an embodiment of the present invention.

Fig. 6 shows the stereochemical structure signal of filter screen fixing structure in dewatering well filter device according to an embodiment of the present invention Figure.

Fig. 7 shows the stereochemical structure signal of bottom filtering structure in dewatering well filter device according to an embodiment of the present invention Figure.

In figure: downcomer 1, permeable hole 11, flanged plate 12, lifting lug 13, hole for hoist 131, filter screen fixing structure 2, vertical bar 21, Connecting band 22, bottom filtering structure 3, connecting tube 31, steel wire 32, the second filter screen 33, connecting flange 34, binding strap 4, first Filter screen 5, cross bar 6, immersible pump 7, drainpipe 71, power supply line 72, dewatering well 8.

Specific embodiment

The various embodiments that the present invention will be described in more detail that hereinafter reference will be made to the drawings.In various figures, identical element It is indicated using same or similar appended drawing reference.For the sake of clarity, the various pieces in attached drawing are not necessarily to scale.

The present invention provides a kind of dewatering construction method, includes the following steps:

Step S1, excavation and precipitation well.

According to the design drawing of dewatering well, surveying setting-out, determines the drilling well position of dewatering well 8 at the construction field (site)；Using brill Well machinery drills out the dewatering well 8 for meeting projected depth and diameter in determining drilling well position.

Step S2, dewatering well filter device is set in the dewatering well.

Wherein, the dewatering well filter device is set as being made of multiple successively end to end downcomers 1, will be adjacent Connection between two downcomers 1 is set as detachable connection, is evenly arranged on the tube wall of the downcomer 1 multiple Permeable hole 11 coats the first filter screen 5 on the periphery wall of the downcomer 1, the downcomer of bottom in the dewatering well 8 Bottom filtering structure 3 is arranged in 1 bottom end.

Step S3, immersible pump 7 is set to the bottom in the dewatering well filter device, the drainpipe 71 of the immersible pump 7 Stretch out the outside of the dewatering well.

Immersible pump 7, to the bottom in dewatering well filter device, can make immersible pump 7 be placed in bottom using rope lifting decentralization On the steel wire 32 of portion's filter structure 3, the drainpipe 71 and power supply line 72 of immersible pump 7 stretch out the outside of dewatering well 8.

Step S4, start the immersible pump and precipitation is carried out to the dewatering well.

The power supply line 72 of immersible pump 7 is powered on, startup power supply switch drains dewatering well 8.

In the present embodiment, the structural schematic diagram for the dewatering well filter device being arranged in dewatering well 8 in the step S2 is such as Shown in Fig. 2.The quantity of downcomer 1 is two in figure, and in practical dewatering construction, the quantity of downcomer 1 can be existing according to construction The depth of field dewatering well 8, the downcomer 1 of more than two quantity is successively fixedly connected in dewatering well 8 from beginning to end.Fig. 3 and Fig. 4 The different perspectives that the bottom downcomer of dewatering well filter device is connect with bottom filtering structure respectively in the present embodiment is stood Body structural schematic diagram.

Referring to Fig. 5, in the present embodiment, be equipped with internal screw thread in the first end of downcomer 1, the second end of downcomer 1 be equipped with The compatible external screw thread of the internal screw thread of the first end of downcomer 1, by the internal screw thread and described between two neighboring downcomer 1 External screw thread is threadedly coupled.When assembling downcomer formation dewatering well filter device, assembled between two adjacent downcomers When, the external screw thread of one of downcomer is screwed on the internal screw thread of another downcomer, to realize the assembling of downcomer. It can be realized between adjacent downcomer 1 detachably, appropriate number of downcomer 1 can be selected according to the dewatering well 8 of different depth It is sequentially connected end to end, meets requirement.

In order to improve the corrosion resistance of downcomer 1, extend the service life of downcomer 1, downcomer 1 uses stainless steel tube Or coating steel pipe is made.In the present embodiment, downcomer 1 is made of coating steel pipe, in alternative embodiment, downcomer 1 Pvc pipe etc. also can be used and carry out processing and fabricating.

In the present embodiment, the bottom filtering structure 3 and drop of the bottom end setting of the downcomer 1 of bottom in dewatering well 8 It is detachable connection between water pipe 1.As shown in fig. 7, bottom filtering structure 3 includes connecting tube 31, steel wire in the present embodiment 32 and second filter screen 33, steel wire 32 be set to one end of connecting tube 31, the second filter screen 33 is covered on steel wire 32, The periphery of second filter screen 33 exceeds steel wire 32, and the second filter screen 33 is fixedly connected in connecting tube 31 by binding strap 4, even Adapter tube 31 is equipped with internal screw thread compatible with the external screw thread of 1 second end of downcomer, and bottom filtering structure 3 and downcomer 1 are connected When connecing, the internal screw thread in the connecting tube 31 of bottom filtering structure 3 is screwed on the external screw thread of 1 second end of downcomer, thus will Bottom filtering structure 3 is fixedly connected on downcomer 1.It in alternative embodiment, can be in the dewatering well filter device The bottom end welded reinforcement of the downcomer 1 of bottom, reinforcing bar transverse and longitudinal cross weld reticulate, and the second filtering is superscribed outside reinforcing bar Simultaneously binding and fixing are secured for net 33, form bottom filtering structure 3.

In the step S2, dewatering well filter device is set in dewatering well, is included the following steps:

Step S201, hanging device is set up above the well head of dewatering well 8.

This more flexible hanging device of autocrane is used in the present embodiment.

Step S202, the downcomer for being equipped with bottom filtering structure is sling using hanging device, and makes the of the downcomer Downward, which is transferred in dewatering well for two ends.

In the step, before lifting to downcomer 1, upper first filter screen is coated on the periphery wall of each downcomer 1 5, while bottom filtering structure 3 being fixedly connected on one of downcomer 1.

It is convenient in order to lift by crane downcomer 1, multiple lifting lugs 13 are set on the periphery wall of the first end of downcomer 1, it is multiple Lifting lug 13 is uniformly arranged along the circumferential direction of downcomer 1, offers hole for hoist 131 on lifting lug 13, the axis of hole for hoist 131 perpendicular to The axis of downcomer 1.In the present embodiment, it is provided with 4 lifting lugs on the periphery wall of the first end of downcomer 1, when lifting lifts Two hoist cables are connected in equipment, two lifting lugs 13 being oppositely arranged on downcomer 1 are hung using two hoist cables, downcomer 1 is carried out Lifting.

In order to enable the first filter screen 5 coated on 1 periphery wall of downcomer to be fitted tightly on downcomer 1, first Filter screen fixing structure 2 is arranged in the external of filter screen 5, is fixed on the first filter screen 5 on downcomer 1 through filter screen fixing structure 2. Wherein, the filter screen fixing structure 2 includes multiple vertical bars 21 along 1 axial direction of downcomer arrangement, and multiple vertical bars 21 are being dropped Water pipe 1 is arranged circumferentially, and filter screen fixing structure 2 is fixed on downcomer 1 using binding strap 4.Filter screen fixing structure 2 can So that the first fixation on downcomer 1 of filter screen 5, while can also prevent downcomer 1 in decentralization process by dewatering well 8 The borehole wall, which scratches, causes the breakage of the first filter screen 5.In order to keep filter screen fixing structure 2 quick and easy for installation, multiple soft companies are used Tape splicing 22 links into an integrated entity multiple vertical bars 21 structure, keeps equidistant between adjacent vertical bar 21, and by connecting band 22 along vertical bar 21 Length direction be evenly arranged.Without arrangement when filter screen fixing structure 2 is installed in this way, the multiple vertical bars 21 being directly integrally connected It is centered around outside the first filter screen 5, then uses 4 binding and fixing of binding strap.In the present embodiment, vertical bar 21 uses diameter Be made of the spiral of 5mm-8mm, soft connecting band 22 use width for 20mm-50mm, with a thickness of the band of 1mm-2.5mm Steel is made.In the present embodiment, the first filter screen 5 and the second filter screen 33 use nylon material filter screen, and binding strap 4 uses Buddhist nun The strap of dragon or polyethylene material, carries out binding operation using baling press.

Step S203, before being equipped with the first end of downcomer of bottom filtering structure and entering dewatering well, by the downcomer The top of the dewatering well is vacantly set, slings another downcomer using the hanging device and is located in the dewatering well Downcomer link together.

In the present embodiment, before being equipped with the first end of downcomer 1 of bottom filtering structure 3 and entering dewatering well 8, in the drop A cross bar 6 is respectively penetrated in the hole for hoist 131 for the another two lifting lug 13 that water pipe 1 is oppositely arranged, 6 length of cross bar is greater than dewatering well 8 well head diameter, using cross bar 6 by the downcomer 1 vacantly at the top of dewatering well 8.Then it removes and is connected on the downcomer 1 Two hoist cables, be connected on two be oppositely arranged the lifting lug 13 of another downcomer 1.Extremely by the lifting of another downcomer 1 Two downcomers 1 are threadedly coupled by the top of the downcomer 1 equipped with bottom filtering structure 3.

Step S204, the downcomer to link together is transferred to the precipitation bottom, when the downcomer of the top Upper end enters before the dewatering well, and the downcomer to link together is vacantly arranged in the top of the dewatering well, uses institute It states hanging device and slings another downcomer and link together with the downcomer of the top in the dewatering well is located at, follow according to this Ring, until the downcomer for being equipped with bottom filtering structure is located at the bottom of the dewatering well.

In the present embodiment, the downcomer 1 to link together is continued before the decentralization of 8 bottom of dewatering well, will first be linked together Downcomer above propose a distance, the cross bar 6 being interspersed on lifting lug 13 is extracted out, continues to transfer, when the downcomer 1 of the top First end enter before dewatering well 8, in the hole for hoist 131 for the another two lifting lug 13 that the top downcomer 1 is oppositely arranged point A cross bar 6 is not penetrated, using cross bar 6 by the downcomer to link together vacantly at the top of dewatering well 8.Then connection is removed Two hoist cables on the top downcomer 1, are connected on two be oppositely arranged the lifting lug 13 of another downcomer 1.It will be another The top of one lifting of downcomer 1 the top downcomer 1 into dewatering well 8, two downcomers 1 are threadedly coupled.According to this Circulation, until the downcomer 1 of bottom reaches the bottom of dewatering well 8, dewatering well filter device is installed.

Dewatering well filter device, the dewatering well filtering is arranged in dewatering construction method provided by the invention in dewatering well Device is set as being made of multiple successively end to end downcomers, sets the connection between the two neighboring downcomer to Detachable connection can select appropriate number of downcomer to be attached according to the depth of dewatering well, and dewatering operation is completed Afterwards, downcomer can be taken out to recycling from dewatering well, reduce dewatering construction cost；The dewatering well filter device can To filter precipitation simultaneously from the tube wall of bottom and downcomer, drainage area is increased, precipitation efficiency is improved.

It should be noted that herein, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that There is also other identical elements in process, method, article or equipment including the element.

Finally, it should be noted that obviously, the above embodiment is merely an example for clearly illustrating the present invention, and simultaneously The non-restriction to embodiment.For those of ordinary skill in the art, it can also do on the basis of the above description Other various forms of variations or variation out.There is no necessity and possibility to exhaust all the enbodiments.And thus drawn The obvious changes or variations that Shen goes out are still in the protection scope of this invention.