CN1326033A

CN1326033A - Soil compacting method and its special machine and tool

Info

Publication number: CN1326033A
Application number: CN 00117102
Authority: CN
Inventors: 关伟伯
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-05-25
Filing date: 2000-05-25
Publication date: 2001-12-12

Abstract

A needle-inserting method for compacting soil layer of backfill soil or original soil features that the hydraulic crushing hammer of engineering machinery is substituted by the rod in different shapes, the rod is deeply inserted at intervals in static pressure or impact mode, to form deep holes, and the calcium lime or powdered coal ash, modifier and treated wet soil are back filled into said holes and rammed. Its advantages include high quality and reliability of engineering, small size of structural object and low cost.

Description

A kind of soil compression method and special-purpose machines and tools

The present invention relates to a kind of soil (comprise and banketing and undisturbed soil) debulking methods--needle-inserted soil layer compacting, belong to the highway construction technical field; The invention still further relates to and realize the used repacking special-purpose machines and tools of said method.

The existing building engineering bankets, especially the debulking methods that bankets of roadbed roughly has two kinds: use the compaction in layers of road roller and use the compacting of tamper tool; These two kinds of debulking methods all have certain limitation: the compaction in layers method uses the road roller compacting that enough operation width will be arranged, and lift height is general only below 50 centimetres, and as reaching higher degree of compaction, the compacted depth of layering is all less than 30 centimetres; The compacting method uses light-duty or heavy tamper tool that soil is tamped, its principle makes to banket and is compacted for ram the roadbed top layer with weight, implementing in strict accordance with operational procedure under worker's the situation, these two kinds of methods can reach the degree of compaction of current specifications requirement, but all be difficult to compacting or compacting over-wet soil, also be difficult to operation on face of slope, and existing method is to the wall back of the body of structure, the platform back of the body, the embankment in location, narrow corner such as pipe trench can only adopt small machine to carry out compacting, degree of compaction is difficult to reach the current specifications requirement, cause the degree of compaction deficiency at these positions, form hidden danger; And specifically: these two kinds of methods all can't be carried out the superpower compacting of deep layer to banketing, and if can roadbed be banketed and the building natural ground carries out the superpower compacting of the deep layer required standard of current specifications (surpass), then can guarantee workmanship, improve the reliability of engineering, structure sizes such as reduction road surface, save engineering quantity, reduce the cost of engineering.

Purpose of the present invention, just provide a kind of new soil (comprise and banketing and undisturbed soil) debulking methods--needle-inserted soil layer compacting, making in this way can be to carrying out the superpower compacting of deep layer through the soil layer that road roller rolls or the tamper tool was tamped, make it to reach with existing method and be difficult to reach or inaccessiable degree of compaction, can realize that also the embankment in the locations, narrow corner such as the wall back of the body, the platform back of the body, pipe trench to structure carries out compacting reliably, but also can make roadbeds such as handling over-wet soil and high liquid limit soil in this way bad with soil.

The invention still further relates to the repacking special-purpose machines and tools of realizing that said method is used.

Debulking methods--needle-inserted soil layer compacting is as follows for soil of the present invention (comprise and banketing and undisturbed soil):

1) insertion bar of use column by certain spacing, in the limit that the earthwork is unlikely to swell, carries out needle-inserted perforating squeeze job with the mode of static pressure or impact to soil layer;

2) hole that is evenly distributed that needle-inserted extruding back is formed is tamped with earthen backfill or is inserted real.

Described spacing is 30 to 100 centimetres, and described hole diameter is that 7 to 20 centimetres, the degree of depth are 30 to 200 centimetres.

The optimum facility of realizing the inventive method can be with using engineering machinery such as excavator, loader main frame widely on the present engineering, configuration (strengthens, extends through repacking, adopt different quartering hammer nose shapes according to different soil layer) or without the hydraulic breaking hammer of repacking, the method for using static pressure or impact to soil layer carry out the needle-inserted static pressure be pressed into or impact squeeze into, by extruding that soil is compacted.

Needle-inserted soil layer compacting of the present invention is a kind of new compacting natural ground or the method for banketing, and it is applicable to following aspect:

A) it is superpower compacted to carry out deep layer to the soil layer that rolled through road roller, supporting capacity and stability that order is banketed increase substantially, reach with existing method and be difficult to reach or inaccessiable degree of compaction, thereby guarantee workmanship, improve the reliability of engineering, reduction structure size is saved engineering quantity, reaches the purpose that reduces construction costs;

B) when desiccant that pours into quicklime or flyash and so in hole and modifying agent, it is bad with soil then can to handle roadbeds such as over-wet soil and high liquid limit soil;

C) can carry out the closure compacting to domatic ground, particularly can be to cranny development, loose, permeable grade is easy to generate the landslide domaticly carries out compacted compacting, prevents the infiltration of surface water;

D) can be to insert the compactness and the supporting capacity that improve dry type natural ground soil in fact, easily as the natural ground on structure basis.

The present invention is described in further detail below in conjunction with drawings and Examples.

Fig. 1 carries out the cushion hole net distribution schematic diagram of the superpower compacted embodiment of deep layer for needle-inserted soil layer compacting of the present invention;

Fig. 2 is hole with the earthen backfill compacting or inserts the partial cutaway schematic of real back along the A-A line of Fig. 1;

Fig. 3 is a hydraulic pressure insertion bar cross-sectional schematic.

Can see from Fig. 1 to Fig. 3, on soil layer surface through road roller rolls or the tamper tool was tamped, being net distribution, diameter be 12 centimetres, the degree of depth is 100 centimetres a hole 1, hole spacing 2 is 0.5 meter, hole is to adopt insertion bar 3 usefulness needle-inserteds extruding as shown in Figure 3 or the method for impacting is carried out the perforating operation and formed, Fig. 2 is hole with the earthen backfill compacting or inserts part sectioned view after real, natural ground as the structure basis does not mostly deal with at present, therefore supporting capacity is lower, use needle-inserted soil layer compacting of the present invention, can improve the compactness and the supporting capacity of dry type natural ground soil easily;

When desiccant that in hole, pours into quicklime or flyash and so on and modifying agent, can reduce the water content and the soil property of improving the bad usefulness soil of roadbed such as high liquid limit soil of over-wet soil layer, that adopts that above-mentioned side can also be widely used in the depression fills out pre-treatment etc., can both satisfy the requirement of engineering.

In addition, use needle-inserted soil layer compacting and be easy to banketing of location, the narrow corner of structure inserted in fact, eliminate the hidden danger of quality of the degree of compaction deficiency at these positions in the engineering reality.

Novel soil compression method can be used existing engineering machinery to reequip slightly and can implement, as converting with the matching used hydraulic breaking hammer of hydraulic crawler excavator, it can carry out the perforating operation to the soil layer that rolls, met the current specifications compaction requirement through road roller easily, therefore, every wheeled or shovel crawler mechanical energy get at reach, the earthwork compacting work in the excavator swing arm sphere of action all can finish, and existing compacting machinary can't be to domatic ground, and particularly the closure compacting is carried out on abrupt slope shape ground; Therefore can be to cranny development, loose, permeable grade is easy to generate the landslide domaticly carries out compacted compacting, prevents the infiltration of surface water, fundamentally gives the landslide of anti-very harmful soil-slope.

Claims

1, a kind of soil compression method--needle-inserted soil layer compacting is as follows:

A) use column insertion bar (3),, in the limit that the earthwork is unlikely to swell, soil layer is carried out needle-inserted perforating squeeze job with the mode of static pressure or impact by certain spacing (2);

B) hole that is evenly distributed (1) that needle-inserted extruding back is formed is tamped with earthen backfill or is inserted real.

2, according to the soil compression method of claim 1, it is characterized in that: described spacing (2) is 30 to 100 centimetres, and described hole (1) diameter is that 7 to 20 centimetres, the degree of depth are 30 to 200 centimetres.

3, a kind of special-purpose machines and tools that are applicable to the soil compression method of claim 1 are formed by the earth and rock works machinery refitment, it is characterized in that: make hydraulic breaking hammer into round end.