CN1019915C - Device of automatically laying rollers for preventing flushing - Google Patents

Abstract

The present invention discloses an automatic submerged device which is used for constructing the basic protective engineering of the earthwork cloth, particularly an earthwork cloth roller anti-scouring automatic submerged laying device, which is a rigid roller which is wound with the earthwork cloth on two rows. Under the action of the self-gravity and the downwards rotary vortex of the water current, the roller of the earthwork cloth can be automatically submerged into a scouring hole, and accordingly, the purposes of protecting the base of the protective engineering, simplifying the construction process and reducing the construction cost of the engineering can be achieved. The technical scheme can be widely used for the basic protection of all kinds of protecting engineering of channels and the marine constructions.

Description

Device of automatically laying rollers for preventing flushing

The technical program relate to a kind of construct geotextiles basis preventive works heavy automatically mat formation put.The technical program can be widely used in the basis protection of various channel protection engineerings and hydraulic structure.Protection as the various dam foundations, abutment, shore protection base, water conservancy diversion levee foundation etc.

Generally when engineerings such as build revetment, harbour, abutment, trraning pole, for being destroyed by rush of water by current on the basis that prevents engineering, the method that adopts is the gravity type foundation with the dark 5～10m of stone block building usually.Construct this engineering foundation, when construction, need set sheet pile, cofferdam, draw water, dig base, build bricklaying by laying bricks or stones.Multiple working procedures such as backfill.Engineering quantity is big, the cost height.In recent years, some new engineering foundation construction methods were arranged also, as sheet-pile breakwater, anchor retaining wall etc.See " Foundation Design handbook and the chief editor's of first designing institute of the Ministry of Railways " the 7th piece " retaining wall " in the railway engineering designing technique handbook in " roadbed " of China Construction Industry Press's translation issuing for details.Adopt said new method, need a large amount of reinforced concretes and complicated construction technology, construction costs is higher equally.In addition, also have a kind of technical scheme of constructing engineering foundation, see that application number is 87106263 patent application " geotextiles bank revetment foundation engineering construction method and apparatus " with geotextiles.Adopt this technical scheme, can simplify construction technology.Reduce construction costs.But to having relatively high expectations of construction equipment.

The purpose of the technical program is to provide a kind of can enter the bed scour hole with the heavy automatically shop of flexible materials such as geotextiles, with the device that prevents that water stream from washing away engineering foundation, thereby reaches protection building simplification engineering construction process, reduces the purpose of construction costs.

The concrete grammar of the technical program is the end flexible materials such as geotextiles, is fixed on the cylinder made from steel concrete or other rigid materials, and geotextiles is wound on the cylinder.During construction geotextiles on the cylinder is wound on an outer end, embedding is built in the masonry of preventive works.Two ends at cylinder are provided with connecting ring, and adjacent two cylinders are connected.For preventing that current from from two cylinder seam crossing scours, can lay double cylinder, and two row's cylinder seam crossings are staggered mutually.Then two row's cylinders are embedded in forward position, preventive works basis.When flood season, arriving or current were big, current produce the eddy current of backspin along the masonry of preventive works, form a scour hole near the basis of preventive works, the geotextiles cylinder that is embedded in forward position, preventive works basis sinks automatically along scour hole under the gravity and the effect of following bumpy flow of self.The geotextiles that will be wound on the cylinder expands out simultaneously.The geotextiles that expands out has stopped current to the washing away of preventive works bases, thereby has reached the purpose of protection engineering foundation.

Fig. 1 is the schematic diagram of an application example of the technical program.Among the figure: 1 preventive works top masonry, 2 preventive works cushion caps, 3 geotextiles, 4 preventive works foundation piles, 5 geotextiles cylinder connecting rings, 6 geotextiles cylinders, 7 geotextiles seam crossings, 8 soil matrixs.

Fig. 2 uses the preceding view of preventive works foundation scouring that the technical program is constructed.

Fig. 3 is the view of using behind the preventive works foundation scouring that the technical program constructs.Among the figure: 9 scour holes.

Application process and construction sequence to the technical program is described further in conjunction with the accompanying drawings.

1, selects the second best in quality geotextiles or other flexible materials, carry out cutting processing by design size.

2, give system geotextiles cylinder 6, diameter of cylinder is decided on the water velocity size, generally at 20～60cm.Drum length is generally 50～200cm.

3, with an end of the geotextiles that cuts, be securely fixed on the cylinder 6 (available chemical adhesive method or use mechanical embedding method).

4, identical with construction on general natural ground, the foundation pit of excavation certain depth under the riverbed.For strengthening underlying strength, also can in the basis, make castinplace pile or stanchion 4.Masonry protection engineering cushion cap 2 in foundation pit.

5, geotextiles on the cylinder 6 being wound on outer one holds level with both hands and is layered on the cushion cap 2.And continue masonry protection engineering top masonry 1 thereon.

6, adjacent two geotextiles cylinders 6 are linked together.Attention is staggered the seam crossing 7 of the billowing tube 6 of two row's geotextiles mutually.

7, backfill, engineering are promptly accused and are finished.

Adopt the technical program can effectively protect the basis of protection works to avoid current scour. Compare with constructing traditional gravity type foundation, can reduce widely embedded depth of foundation. Reduce bricklaying volume 50～60%, reduce 60～70% of foundation excavation amount, reduce the provisional support that needs because of excavation construction, equipment and the expenses such as draining. Construction period can be shortened. The technical program is simple, is convenient to promote. Compare with conventional art, generally can reduce construction costs 60～70%. Particularly on the drift sand stratum that is difficult to excavate, economic benefit is more obvious.

Claims (1)

1, the basic protection against erosion of a kind of preventive works sinks to mat formation automatically and puts, form by geotextiles and cylinder etc., an end that it is characterized in that geotextiles is fixed on the cylinder, and geotextiles is wound on the cylinder, the two ends of cylinder are provided with connecting ring, interconnected two row's geotextiles cylinders form to sink to mat formation automatically to be put, and a geotextiles end embedding outside that is wound on the cylinder is built in the preventive works masonry, and two row's geotextiles cylinders are embedded in forward position, preventive works basis.