CN101363220A - Construction waste squeezing silt backfill method - Google Patents

Abstract

The invention relates to disposal of the building garbage left behind by removal of buildings in the construction industry and the silt caused by backfilling of ponds, in particular to the method of backfilling ponds of silt squeezing out by building garbage. The invention uses the building garbage to backfill ponds, under the repeated squeezing of a backhoe shovel and due to the good hydroscopic property of the building garbage, the moisture of the slit is absorbed by the building garbage when the slit is scattered into the gap of the building garbage by appropriate proportion, and the silt, with the good filling and adhesion properties, can completely fill the gaps of the construction garbage under external force and can adhere to the building garbage. The method can solve the problems of emission of the building garbage and slit disposal, and also can solve the foundation problem at the soft soil area such as ponds.

Description

Construction waste squeezing silt backfill method

Technical field

The processing of mud is a kind of construction waste squeezing silt backfill method specifically under the processing of the building waste that stays when the present invention relates to the removal of building trade building and the river embankment backfill situation.

Background technology

At present, domesticly carry out large-scale economic construction (particularly new countryside construction), often carrying out housing demolition and building construction.During housing demolition, produce a large amount of building waste (remaining brick, watt bits, block concrete and consequent particle, dust etc. behind the demolishing buildings), the processing of these building wastes will cause the pollution of environment.Meanwhile, when carrying out building construction in weak native zones such as river embankments, need handle soft soil foundation, difficulty is bigger.The method of handling has two kinds at present, a kind of is cushion, be about to the mud of filling out to be changed and all dig out, change with clay or other constructional materials and fill out, mud digs out discharging need discharge the place, because mud is mobile big, during discharging in the open, every cubic metre mud needs 5 square metres discharging place, and lasting needs above ability drying half a year, and the mud foul smell is very heavy, causes surrounding enviroment to pollute.The expenses such as construction cost that the made ground base handles, cost of materials of changing are also very high, increased building costs.Another kind is an inorganization backfill method, promptly under inorganization, river embankment having been carried out backfill, is directly to be poured into building waste or household garbage in the river embankment, inorganization backfill method, to cause the face of land harder, the inside weakness is changed and is filled out with digging out mud as natural ground, workload is very big, fracture accident often taking place when adopting pile foundation piling, bring potential safety hazard for construction site and operator, does not have good solution so far.

Summary of the invention

The objective of the invention is for overcoming above-mentioned the deficiencies in the prior art part, a kind of construction waste squeezing silt backfill method is provided, utilize building waste to be backfilling into river embankment, push down repeatedly through backacter, building waste has goodish water imbibition, when being dispersed in mud in the space of building waste by proper proportion, after moisture in the mud can be absorbed by building waste, mud has fillibility and cementability preferably, under external force, the space of building waste can be filled up, and, can play bonding effect to building waste, this method both can solve the building waste emission problem, the sludge treatment problem also can solve weak native regional Measures for Making Ground and Foundation such as river embankment.

The present invention realizes with following technical scheme: a kind of construction waste squeezing silt backfill method is characterized in that: carry out as follows:

(1) water of river embankment is drained;

(2) building waste is transported to the zone for the treatment of backfill, with backacter building waste has been dug, among rendering to river embankment mud along the river embankment edge, after building waste is rendered to muck surface, with firmly extruding downwards of backacter, because mud is mobile big, and mud is extruded by building waste, part mud is packed in the space of building waste (this earth-filling method is called " squeeze and become silted up ");

(3) backacter compacting back and forth in the intact zone of backfill makes most of mud enter the building waste space, and building waste is played filling effect, has reduced the intergranular relative slip of building waste.

The present invention compares with above-mentioned other earth-filling method, have the following advantages and effect: well solved dirty, the random problem of building waste, also preferably resolve weak native regional Measures for Making Ground and Foundation such as river embankment, foundation strength after treatment, stability are all relatively good, building is carried out piling construction, pile breaking phenomenon can not take place, both saved the building waste discharge fee, also save the sludge treatment expense, had remarkable economic efficiency and social benefit.

The specific embodiment

Below in conjunction with embodiment the present invention is described in further detail:

Embodiment,

The composition that is used for the building waste of foundation backfill mainly is brick, watt bits, concrete block, mortar piece and the mixture be made up of their chip dust etc., its particle diameter general requirements is not more than 200mm, the building waste of bulk must use through broken back, must not contain impurity such as organic substance, plastics.

Construction equipment: backacter and building waste carrying facility.

Job practices:

(1) water of river embankment is drained;

(2) building waste is transported to the zone for the treatment of backfill, with backacter building waste has been dug, among rendering to river embankment mud along the river embankment edge, after building waste is rendered to muck surface, with firmly extruding downwards of backacter, because mud is mobile big, and mud is extruded by building waste, part mud is packed in the space of building waste (this earth-filling method is called " squeeze and become silted up ");

(3) backacter compacting back and forth in the intact zone of backfill makes most of mud enter the building waste space, and building waste is played filling effect, has reduced the intergranular relative slip of building waste.

Through actual measurement, the bearing capacity of foundation soil after above-mentioned construction waste squeezing silt backfill method construction can reach (the natural ground supporting capacity that is equivalent to five floor rooms) more than the 13kPa.

Instantiation:

Floor space 40000m forms a team in certain residential district three ², the river embankment 2000m of inorganization backfill wherein ²(by the building waste institute landfill after household garbage before removing and the removal) can only adopt cushion to handle during construction, change with clay and fill out, and cost lasts half a year and just disposes with 260,000 yuan altogether; The contiguous project nine floor space 60000m that forms a team ², river embankment water surface area 50000m wherein ², utilize the building waste of removing to make backfill, squeezing becomes silted up handles, and has satisfied designing requirement, and only 530,000 yuan of full payments are lasted also only six months; Another contiguous project is not handled the inorganization backfill, adopts C70 level high-strength Prestressed Pipe Pile basis, because the surface is hard, carries out integrity detection after middle soft beaten in the piling construction, finds that whole foundation piles fracture.

Construction waste squeezing silt backfill method provided by the invention is used for building waste the regional foundation backfills of weak soil such as river embankment exactly, both can solve the building waste emission problem, also can solve weak native regional ground processing such as river embankment.

Claims (1)

1, a kind of construction waste squeezing silt backfill method is characterized in that: carry out as follows:

(1) water of river embankment is drained;

(2) building waste is transported to the zone for the treatment of backfill, with backacter building waste has been dug, among rendering to river embankment mud along the river embankment edge, after building waste is rendered to muck surface, with firmly extruding downwards of backacter, because mud is mobile big, and mud is extruded by building waste, part mud is packed in the space of building waste (this earth-filling method is called " squeeze and become silted up ");

(3) backacter compacting back and forth in the intact zone of backfill makes most of mud enter the building waste space, and building waste is played filling effect, has reduced the intergranular relative slip of building waste.