CN106012970A - Construction method for covering foundation bed with geotechnical cloth to prevent back silting - Google Patents

Abstract

A construction method for covering a foundation bed with geotechnical cloth to prevent back silting includes the steps that firstly, the foundation bed is covered with the geotechnical cloth; secondly, pressing is conducted through gravel bags, wherein a row of gravel bags is pressed on the periphery of the geotechnical cloth at every interval of 10 meters, and drifting of the geotechnical cloth is prevented; and thirdly, foundation bed dredging treatment is conducted before fine flattening. By the adoption of the construction method, the silting prevention effect is remarkable, and the construction method has the beneficial effects that settlings generated due to back silting in stone gaps of the foundation bed are reduced, dredging is more thorough, and construction quality is improved greatly; the dredging construction process is simplified, construction is simper, easy and fast, and construction efficiency is improved; and the expenses of ship machines are saved on the economic aspect.

Description

A kind of bedding covers the construction method that geotechnological non-return of deploying troops on garrison duty becomes silted up

Technical field

The present invention relates to the construction technology of harbour bedding, particularly relate to a kind of bedding and cover geotechnological non-return silt of deploying troops on garrison duty Construction method.

Background technology

PORT OF YINKOU needed to stop work due to temperature reason during the March of annual December to next year, and this will lead Cause gravity type quay termination bedding, fail to install in time the bedding end face of square (caisson), the most mounted side Block (caisson) tailing edge needs the most exposed, and back-silt substantial amounts of mud deposit, for ensureing square (caisson) And the coefficient of sliding friction between bedding meets requirement, before next procedure is constructed, the side of needs refutes and assembles conjunction ducker Member carries out desilting.

In tradition desilting technique, need water high-pressure hydraulic pump under diver that the surface of bedding is progressively cleared up, The impulsive force the utilizing water pump deposit that will back-silt rushes, and the deposit that back-silts flows away along with the trend of sea water, utilizes Such mode reaches the purpose of desilting.But this desilting mode has certain drawback: (1) desilting is the most thorough The end, owing to trend is uncontrolled, time mud deposit blown afloat can not be fully erased；(2) in stone gap Mud can not be removed thoroughly；(3) removing long 100 meters, the bedding of wide 17 meters, cooperation ducker refutes in needs side The 6-7 days used time of member is the most long-time；Not only desilting is not thorough, and cost is high, and opens next procedure construction Exhibition has certain restriction.

Summary of the invention

The present invention solves that the problems referred to above provide a kind of overburden soil work cloth on bedding in case non-return silt is become silted up in a large number The construction method of mud.

The technical solution used in the present invention:

A kind of bedding covers the construction method that geotechnological non-return of deploying troops on garrison duty becomes silted up, and the steps include:

(1) bedding covers geotextiles: cover 1～2 layer in winterization or long-time idle bedding top Geotextiles；

(2) sandstone bag compacting: press a sand discharge stone bag at interval of 10 meters on geotextiles periphery, prevent geotechnique Cloth drifts about；

(3) thin flat front bedding desilting processes: bedding to be carried out at desilting before carefully putting down bedding by Second Year Reason, under Divers, sandstone bag is first removed by water, is then tied down by geotextiles one end nylon rope, and nylon rope is solid The side of being scheduled on is refuted, and utilization side refutes agitation anchor hawser shifting ship and geotextiles slowly dragged away to another direction from a direction.

Beneficial effects of the present invention: the anti-silting effect of the inventive method is obvious, has advantage as follows:

(1) decrease the deposit that back-silts in bedding stone gap, make desilting more thorough, substantially increase construction Quality；

(2) simplify the construction process of desilting, construct simpler, brisk, improve the efficiency of construction；

(3) economic aspect also saves ship machine expense.

Accompanying drawing explanation

Fig. 1 is the schematic diagram that bedding of the present invention covers upper geotextiles.

Wherein: 1-sandstone bag；2-geotextiles；3-bedding.

Detailed description of the invention

250 meters of winterization have been thrown in 205#, 206# general berth, celestial being's island harbour district, PORT OF YINKOU October As a example by bedding, the method is specifically described.

A kind of bedding covers the construction method that geotechnological non-return of deploying troops on garrison duty becomes silted up, and the steps include:

(1) bedding covers geotextiles: lead to the length 100 meters of berth winterization at celestial being's island harbour district 205#, wide The bedding top of 30 meters covers 1～2 layer of geotextiles；

(2) sandstone bag compacting: press a sand discharge stone bag at interval of 10 meters on geotextiles periphery, prevent geotechnique Cloth drifts about；

(3) before thin flat, bedding desilting processes: Second Year March, to enter bedding before carefully putting down bedding Row desilting processes, and under Divers, sandstone bag is first removed by water, is then tied down by geotextiles one end nylon rope, The nylon rope side of being fixed on is refuted, and utilization side refutes agitation anchor hawser shifting ship and geotextiles delayed to another direction from a direction Slowly drag away.

Use the method to have only to 1～2 day to complete, save about 5 day time, the machine-team that each side refutes Taking by 5400 yuan/day, the bedding desilting of such 100 meters just can save 27000 yuan, because of celestial being's island harbour district 205#, 206# general berth 250 mesityl bed saves 67500 yuan altogether.

Above one embodiment of the present of invention is described in detail, but described content has been only the preferable of the present invention Embodiment, it is impossible to be considered the practical range for limiting the present invention.All according to the present patent application scope made equal Deng change and improvement etc., within all should still belonging to the patent covering scope of the present invention.

Claims (1)

1. a bedding covers the construction method that geotechnological non-return of deploying troops on garrison duty becomes silted up, it is characterised in that construction procedure is:

(1) bedding covers geotextiles: cover 1～2 layer in winterization or long-time idle bedding top Geotextiles；

(2) sandstone bag compacting: press a sand discharge stone bag at interval of 10 meters on geotextiles periphery, prevent geotechnique Cloth drifts about；

(3) thin flat front bedding desilting processes: bedding to be carried out at desilting before carefully putting down bedding by Second Year Reason, under Divers, sandstone bag is first removed by water, is then tied down by geotextiles one end nylon rope, and nylon rope is solid The side of being scheduled on is refuted, and utilization side refutes agitation anchor hawser shifting ship and geotextiles slowly dragged away to another direction from a direction.