CN104563145A - Rock foundation small guide pipe partial water level lowering device and implementation method thereof - Google Patents

Abstract

The invention relates to a device and an implementation method thereof, in particular relates to a rock foundation small guide pipe partial water level lowering device and an implementation method thereof. The rock foundation small guide pipe partial water level lowering device is characterized in that a PVC (Polyvinyl Chloride) water filter pipe is connected with a PVC connection pipe, wherein the PVC connection pipe is connected with a steel guide pipe; the steel guide pipe is connected with an annular water stopping steel plate; rubber water discharging pipes are inserted into pipes for connecting the steel guide pipe, the PVC connection pipe and the PVC water filter pipe. With the adoption of the technical scheme, the rock foundation small guide pipe partial water level lowering device has the advantages and active effects that the operation is simple, the construction is convenient, the technical difficulty is low, the pertinence on water precipitation and drainage regions is strong and the arrangement is flexible; the cost is low, natural drainage is realized by sufficiently utilizing underground water, and the energy source consumption is reduced; the underground water level can be effectively reduced, a foundation keeps dry and the construction of other procedures is not influenced; a foundation working surface can be more rapidly provided and the engineering progress is effectively promoted; the construction quality is guaranteed and the engineering cost is reduced.

Description

A kind of rock foundation ductule local dewatering device and implementation method thereof

Technical field

The present invention relates to a kind of device and implementation method thereof, particularly a kind of rock foundation ductule local dewatering device and implementation method thereof.

Background technology

At present, due to the impermeability of rock foundation, in rock foundation the infiltration of water be according to crack of stone move towards distribution, the spacing underground water that crack of stone is separated by few all cannot be discharged.Adopt light well point (multi-stage light well point), precipitation depth is between 3 ~ 6m, limits to some extent, and cannot realize for rock foundation for deep foundation ditch.Adopt Deep Pumped Wells, although to be displacement large, precipitation depth large, precipitation scope is large for advantage, for rock foundation, drilling cost is high, long in time limit.Adopt gutter drainage, excavated volume is large, and should there be enough spaces job site, but can not get rid of the underground water of rock foundation completely.

Summary of the invention

Technical problem to be solved by this invention is: provide a kind of rock foundation ductule local dewatering device and implementation method thereof, is the impermeability for rock foundation and a kind of local dewatering method adopted.In rock foundation the infiltration of water be according to crack of stone move towards distribution, when the spacing underground water that crack of stone is separated by few all cannot be discharged, and by the present invention, underground water is discharged foundation ditch, and underground water is down to outside below sole plate 500CM, be conducive to basic engineering construction.

The technical solution adopted for the present invention to solve the technical problems is: fluid-tight rock foundation crack is communicated with to import guiding gutter by the present invention, upset the crack of stone of rock foundation, plash is imported by guiding gutter, this device is imbedded in sump, water conservancy diversion pump line is inserted in the steel conduit of this device, water be down to the following 500mm in basis by guide pump and discharge foundation ditch.The present invention is made up of PVC filter pipe, PVC tube connector, steel conduit, ring seal steel plate and rubber drain, it is characterized in that: PVC filter pipe is connected with PVC tube connector, PVC tube connector is connected with steel conduit, steel conduit is connected with ring seal steel plate, in the pipe that steel conduit, PVC tube connector and PVC filter pipe are connected, insert rubber drain.

Owing to adopting technique scheme, the advantage that the present invention has and good effect are: simple to operate, easy construction, and technical difficulty is low, with strong points to Yield rainfall relation region, flexible arrangement; Cost is low, makes full use of ground water pressure and naturally dredges, and reduces energy consumption; Can effective dewatering, retentively backbone is dry does not affect the construction of other operation; The element task face of providing is very fast, effectively promotes programming; Engineering cost is reduced while guarantee construction quality.Adopt rock foundation ductule local dewatering device and using method thereof can save the duration 40% compared with Deep Pumped Wells, cost savings 60%.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

Figure of description is structural representation of the present invention.

1.PVC filter pipe in figure, 2.PVC tube connector, 3. steel conduit, 4. ring seal steel plate, 5. rubber drain.

Detailed description of the invention

In Figure of description, PVC filter pipe (1) is connected with PVC tube connector (2), PVC tube connector (2) is connected with steel conduit (3), steel conduit (3) is connected with ring seal steel plate (4), in the pipe that steel conduit (3), PVC tube connector (2) and PVC filter pipe (1) are connected, insert rubber drain (5).

Implementation method is:

(1), implementing process flow process

Excavation of foundation pit terminates → observes that seepage part → selection guiding gutter moves towards → select plash position → excavation plash → excavation guiding gutter → making aqueduct → bury underground aqueduct → plash, guiding gutter backfill 20 ~ 40mm rubble drainage layer → ductule precipitation → arrange separation layer → cushion construction → basic waterproof construction → base concrete is built → removed precipitation facility → closed steel conduit → steel catheter tip and builds waterproof concrete;

(2), implementation and operation main points

The first, after rock foundation Blasting Excavation first bottom foundation ditch surrounding open drain+sumping is set, foundation ditch top surrounding also arranges identical drainage system; Be excavated to substrate absolute altitude, with cleaning after stone breaker finishing, to the field observation of basement rock surface layer infiltration situation; Pick cutter there being the place of infiltration to deep-cut, the some leak stopping king shutoff that water percolating capacity is large, the final tiny seepage point forming certain area among a small circle, determines plash according to the rock foundation infiltration flow direction, arranges guiding gutter position; Every sheet seepage point passes to french drain by picking channel(l)ing groove, forms the drainage network under bed course;

The second, sump, guiding gutter will possess enough capacity to ensure control precipitation 500mm below sole plate absolute altitude;

Three, aqueduct will adopt steel, determines depending on the water yield, and diameter can be selected to be the steel pipe of 50mm or 80mm and to weld annular steel plate for sealing water, and the length of aqueduct is determined depending on base thickness;

Four, arrange filter pipe in aqueduct bottom, filter pipe adopts PVC to be convenient to perforating permeable (filter pipe internal diameter is equal to steel aqueduct external diameter, so that be arranged on the bottom of steel aqueduct), and punching aperture 8mm, spacing 50mm, distribute in plum blossom-shaped;

Five, bury PVC filter pipe and steel conduit underground and backfilling material particle diameter should not be less than 20mm, be advisable with 20 ~ 40mm rubble, in case permeable smooth, block up filter pipe;

Six, guiding gutter, sump top, waterproof material laying separation layer below bed course, guarantees not upwards channeling water;

Seven, in the foundation ditch of infiltration, a ponding well is respectively established, 1.5 × 1.5 × 1.5 meters, ponding well, all 20 ~ 40 rubble drainages are filled, the foundation ditch diameter 80mm steel pipe manufacturing aqueduct seeping water serious, the steel pipe manufacturing aqueduct of the foundation ditch diameter 50mm seeping water not serious in ponding well; Permeable use is done in the whole perforating of steel pipe 800mm below bed course, and 550mm place weldering one 5mm on bed course is thick for steel pipe ring seal steel plate, be embedded in the interior guide pump of foundation ditch and draw water, when building raft plate, the 100mm of staying suitable for reading for plate is built for bis-times;

Eight, diversion conduit surrounding will be done taper concrete and fix root, facilitates construction of waterproof layer;

Nine, according to field observation and calculating discharge, select the airtight waterproof submersible pump of appropriate power, that substantially adopt is flow 60 ~ 80m ³the water pump of/h, inserts gutter in aqueduct, carries out draining;

Ten, waterproof coiled material is accomplished the place's shutoff of ring seal steel plate position, after concrete raft plate is built, dewatering well conduit is closely knit with the water-tight concrete shutoff of the high strongest grade being mixed with expansion agent, aqueduct draining round the clock to raft plate build complete;

11, after base concrete raft plate is built, steel conduit top can with plug or Plate Welding, after end blocking or welding terminate, check whether it has water to overflow, as do not found to overflow water, namely availablely than Base isolation system high one-level microdilatancy water-tight concrete, dark for 100mm reserved for its raft foundation top pitting to be built, build rear reinforcement maintenance.

Claims (2)

1. a rock foundation ductule local dewatering device and implementation method thereof, be made up of PVC filter pipe, PVC tube connector, steel conduit, ring seal steel plate and rubber drain, it is characterized in that: PVC filter pipe (1) is connected with PVC tube connector (2), PVC tube connector (2) is connected with steel conduit (3), steel conduit (3) is connected with ring seal steel plate (4), in the pipe that steel conduit (3), PVC tube connector (2) and PVC filter pipe (1) are connected, insert rubber drain (5).

2. a kind of rock foundation ductule local dewatering device according to claim 1 and implementation method thereof, is characterized in that: implementation method is:

(1), implementing process flow process

Excavation of foundation pit terminates → observes that seepage part → selection guiding gutter moves towards → select plash position → excavation plash → excavation guiding gutter → making aqueduct → bury underground aqueduct → plash, guiding gutter backfill 20 ~ 40mm rubble drainage layer → ductule precipitation → arrange separation layer → cushion construction → basic waterproof construction → base concrete is built → removed precipitation facility → closed steel conduit → steel catheter tip and builds waterproof concrete;

(2), implementation and operation main points

The first, after rock foundation Blasting Excavation first bottom foundation ditch surrounding open drain+sumping is set, foundation ditch top surrounding also arranges identical drainage system; Be excavated to substrate absolute altitude, with cleaning after stone breaker finishing, to the field observation of basement rock surface layer infiltration situation; Pick cutter there being the place of infiltration to deep-cut, the some leak stopping king shutoff that water percolating capacity is large, the final tiny seepage point forming certain area among a small circle, determines plash according to the rock foundation infiltration flow direction, arranges guiding gutter position; Every sheet seepage point passes to french drain by picking channel(l)ing groove, forms the drainage network under bed course;

The second, sump, guiding gutter will possess enough capacity to ensure control precipitation 500mm below sole plate absolute altitude;

Three, aqueduct will adopt steel, determines depending on the water yield, and diameter can be selected to be the steel pipe of 50mm or 80mm and to weld annular steel plate for sealing water, and the length of aqueduct is determined depending on base thickness;

Four, arrange filter pipe in aqueduct bottom, filter pipe adopts PVC to be convenient to perforating permeable (filter pipe internal diameter is equal to steel aqueduct external diameter, so that be arranged on the bottom of steel aqueduct), and punching aperture 8mm, spacing 50mm, distribute in plum blossom-shaped;

Five, bury PVC filter pipe and steel conduit underground and backfilling material particle diameter should not be less than 20mm, be advisable with 20 ~ 40mm rubble, in case permeable smooth, block up filter pipe;

Six, guiding gutter, sump top, waterproof material laying separation layer below bed course, guarantees not upwards channeling water;

Seven, in the foundation ditch of infiltration, a ponding well is respectively established, 1.5 × 1.5 × 1.5 meters, ponding well, all 20 ~ 40 rubble drainages are filled, the foundation ditch diameter 80mm steel pipe manufacturing aqueduct seeping water serious, the steel pipe manufacturing aqueduct of the foundation ditch diameter 50mm seeping water not serious in ponding well; Permeable use is done in the whole perforating of steel pipe 800mm below bed course, and 550mm place weldering one 5mm on bed course is thick for steel pipe ring seal steel plate, be embedded in the interior guide pump of foundation ditch and draw water, when building raft plate, the 100mm of staying suitable for reading for plate is built for bis-times;

Eight, diversion conduit surrounding will be done taper concrete and fix root, facilitates construction of waterproof layer;

Nine, according to field observation and calculating discharge, select the airtight waterproof submersible pump of appropriate power, that substantially adopt is flow 60 ~ 80m ³the water pump of/h, inserts gutter in aqueduct, carries out draining;

Ten, waterproof coiled material is accomplished the place's shutoff of ring seal steel plate position, after concrete raft plate is built, dewatering well conduit is closely knit with the water-tight concrete shutoff of the high strongest grade being mixed with expansion agent, aqueduct draining round the clock to raft plate build complete;

11, after base concrete raft plate is built, steel conduit top can with plug or Plate Welding, after end blocking or welding terminate, check whether it has water to overflow, as do not found to overflow water, namely availablely than Base isolation system high one-level microdilatancy water-tight concrete, dark for 100mm reserved for its raft foundation top pitting to be built, build rear reinforcement maintenance.