CN105297700B - A kind of mud, drift sand ground processing method - Google Patents

A kind of mud, drift sand ground processing method Download PDF

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Publication number
CN105297700B
CN105297700B CN201510666141.1A CN201510666141A CN105297700B CN 105297700 B CN105297700 B CN 105297700B CN 201510666141 A CN201510666141 A CN 201510666141A CN 105297700 B CN105297700 B CN 105297700B
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mud
aggregate
drift sand
sand ground
drifting
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CN105297700A (en
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邱封科
张文涛
赵泽昊
梁开静
张友龙
秦勇
罗恒
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China Construction Eighth Engineering Division Co Ltd
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China Construction Eighth Engineering Division Co Ltd
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Abstract

The invention discloses a kind of mud, drift sand ground processing method, including step:In mud, quicksand that certain altitude is removed in untreated mud, drift sand ground, mud, drifting sand layer after cleaning are formed;In after cleaning the mud, to designed elevation, aggregate is pounded to be hit the mud, drifting sand layer and combines together with the mud, drifting sand layer backfill aggregate in drifting sand layer, form that treated mud, drift sand ground.The present invention removes mud, the mud in drift sand ground, quicksand using part, form mud, drifting sand layer, then aggregate is pounded to hit and is backfilling into mud, drifting sand layer, aggregate is made to combine together with mud, drifting sand layer, not only reduces the cleaning amount of mud, quicksand, reduces artificial and material input, but also mud, the speciality of drifting sand layer in itself can be utilized, increase the adhesive property between aggregate, the entirety for being formed securely and being stablized improves treated mud, the structural strength of drift sand ground.

Description

A kind of mud, drift sand ground processing method
Technical field
The present invention relates to a kind of engineering construction field more particularly to a kind of mud, drift sand ground processing methods.
Background technology
Structure foundation engineering is essential, is related to that entire engineering structure safety, especially foundation be weaker, ground The more complicated engineering of situation, if basement process is bad, most direct consequence is exactly to cause differential settlement of buildings, Base isolation system Cracking and other issues jeopardizes the structure safety of whole building and using function.
For traditional method for processing foundation, the method on the complex foundations basis such as processing mud, quicksand is usually mixed Solidifying soil cushion, concrete cushion is needed after the basic soft layer such as mud, quicksand is cleaned out, to foundation weak area Domain casting concrete, until Base foundation design absolute altitude.
Mainly there are three shortcomings for this method for processing foundation:
(1) since this engineering is pile-raft foundation, spacing is closeer between stake and stake, if manually carrying out mud, quicksand cleaning, It then takes a lot of work, is time-consuming;
(2) if carrying out mud, quicksand cleaning with machinery, the damage to pile foundation is bound to cause, the integrality of pile body cannot It ensures;
(3) change filling out with concrete cushion, of high cost, profit is low.
Invention content
The technical problems to be solved by the invention are to provide a kind of for complicated ground treatments such as mud, quicksands, work of constructing Skill is simple, and high treating effect, speed of application is fast, and the low mud of construction cost, drift sand ground processing method.
To realize above-mentioned technique effect, the invention discloses a kind of mud, drift sand ground processing method, including step:
In mud, quicksand that certain altitude is removed in untreated mud, drift sand ground, the mud after cleaning, stream are formed Layer of sand;
In after cleaning the mud, for backfill aggregate to designed elevation, aggregate, which is pounded, hits the mud, drifting sand layer in drifting sand layer And combine together with the mud, drifting sand layer, form treated mud, drift sand ground.
Further improve of the invention is, manually in the silt that certain altitude is removed in untreated mud, drift sand ground Mud, quicksand form mud, drifting sand layer after cleaning.
Of the invention further improve be, the mud, drifting sand layer height be the untreated mud, mobile sand The 10%~15% of the height of base.
Further improve of the invention is that the aggregate includes the first aggregate and the second aggregate, first aggregate Grain size is 40mm~120mm, and the grain size of second aggregate is 5mm~25mm.
Further improve of the invention is that first aggregate and second aggregate are with 5:1~2:1 match ratio is mixed The mud, drifting sand layer are backfilled to after conjunction.
Of the invention further improve be, first aggregate is cobble, the second aggregate rubble.
Further improve of the invention is that the backfill of first aggregate and second aggregate is highly greater than or equal to The height of the untreated mud, drift sand ground.
Of the invention further improve be, first aggregate in treated mud, the drift sand ground contains It is 60% to measure, and the content of second aggregate is 30%.
Further improve of the invention is, further includes step:
In being laid with concrete cushion on treated the mud, drift sand ground;
In laying waterproof coiled material layer on the concrete cushion.
The present invention makes it have following advantageous effect as a result of above technical scheme:
(1) mud, the mud in drift sand ground, quicksand are removed using part, mud, drifting sand layer is formed, then by aggregate It pounds to hit and be backfilling into mud, drifting sand layer, aggregate is made to combine together with mud, drifting sand layer, not only reduces the cleaning of mud, quicksand Amount reduces artificial and material input, but also can utilize mud, the speciality of drifting sand layer in itself, between increase aggregate Adhesive property, the entirety for being formed securely and being stablized improve treated mud, the structural strength of drift sand ground;
(2) manually to untreated mud, drift sand ground cleared up, had bad luck, machinery is avoided to enter the pile foundation area of ground Domain, avoids the damage to pile foundation, and the integrality of pile body is protected.
Description of the drawings
Fig. 1 is a kind of mud of the present invention, the construction of mud, drift sand ground step is separately dug in the middle part of drift sand ground processing method Figure.
Fig. 2 is the construction drawing that the first aggregate and the second aggregate are backfilled in a kind of mud of the present invention, drift sand ground processing method.
Fig. 3 is in a kind of mud of the present invention, drift sand ground processing method after the completion of the first aggregate and the backfill of the second aggregate Construction drawing.
Fig. 4 is that concrete cushion and waterproof roll layer are laid with completion in a kind of mud of the present invention, drift sand ground processing method Construction drawing afterwards.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.
Conventional concrete exchange filling method is mainly changed to aggregate by a kind of mud of the present invention, drift sand ground processing method What method is squeezed, while shortening working hour and reducing cost, machinery can be prevented and enter the closeer pile-raft foundation region of pilespacing, avoided Pile foundation is damaged, suitable for the pile-raft foundation that spacing between stake and stake is closeer.
With reference to shown in Fig. 1~4, mud of the invention, the specific processing step of drift sand ground processing method are as follows:
First, in mud, quicksand that certain altitude is removed in untreated mud, drift sand ground, the silt after cleaning is formed Mud, drifting sand layer 10, as shown in Figure 1.
The present invention is using manually in mud, quicksand that certain altitude is removed in untreated mud, drift sand ground, formation is clearly Mud, drifting sand layer 10 after reason, at the same manually to the mud of formation, drifting sand layer 10 cleared up, had bad luck, it is ensured that mud, quicksand The formation in the element task face of layer 10 prevents the pile foundation region that machinery enters ground, to avoid the damage to pile foundation, pile body it is complete Property is protected;Wherein, mud, drifting sand layer 10 height for untreated mud, drift sand ground height 10%~15%.
Then, in after cleaning mud, for backfill aggregate to designed elevation, aggregate, which is pounded, hits mud, drifting sand layer in drifting sand layer 10 It 10 and combines together with mud, drifting sand layer 10, form that treated mud, drift sand ground, as shown in Figures 2 and 3.
Wherein, aggregate is mixed by the first aggregate 11 and the second aggregate 12 of big small particle, and the first aggregate 11 is grain size For the cobble of 40mm~120mm, the second aggregate 12 is the rubble that grain size is 5mm~25mm, and the first aggregate 11 and the second aggregate 12 with 5:1~2:It is backfilled in mud, drifting sand layer 10 after 1 match ratio mixing, optimizes the match ratio between size aggregate.The The backfill height of one aggregate 11 and the second aggregate 12 is greater than or equal to the height of untreated mud, drift sand ground.Wherein, it uses First aggregate 11 of big small particle compares the identical aggregate of grain size with the second aggregate 12, can be between the reduction aggregate of sufficient amount The gap between the first larger aggregate 11 of grain size is filled in gap using smaller second aggregate 12 of grain size.
Simultaneously as the first aggregate 11 and 12 quality of the second aggregate is harder and quality much larger than mud, quicksand quality, Therefore, when the first aggregate 11 and the second aggregate 12 are backfilled to mud, drifting sand layer 10,12 meeting of the first aggregate 11 and the second aggregate Naturally it is trapped in downwards in the mud of quality weakness, drifting sand layer 10, as shown in Fig. 2, with the first aggregate 11 and the second aggregate 12 Sink, mud, the mud of drifting sand layer 10, quicksand can gradually be gushed out upwards so that mud, drifting sand layer 10 with backfill the first bone 11 and second aggregate 12 of material mutually combines together, as shown in Figure 3.Therefore, the present invention can be using in mud, drift sand ground Mud, the drifting sand layer 10 do not cleared up fill the gap between the first aggregate 11 and the second aggregate 12, and increase by 11 He of the first aggregate Viscosity between second aggregate 12 makes the first aggregate 11 after backfill, the second aggregate 12 and mud, drifting sand layer 10 condense naturally It is effective whole into one, form that treated mud, drift sand ground, it is possible thereby to ensure that treated mud, drift sand ground With enough foundation bearing capacitys, to meet ground design requirement.
The content of the first aggregate 11 in the present invention treated mud, drift sand ground is 60%, and the second aggregate 12 contains It is 30% to measure, mud, quicksand content for 10%, optimize that treated mud, the ingredient of drift sand ground and proportioning, structure jail Gu and stablize, have higher bearing capacity.
Finally, it in being laid with concrete cushion 13 on treated mud, drift sand ground, is laid on concrete cushion 13 Waterproof roll layer 14, as shown in figure 4, wherein, concrete cushion 13 uses C15 pea gravel concreten bed courses, waterproof roll layer 14 is adopted With self-adhesion wet-laying waterproof roll layer, surface layer protection and waterproof and dampproof effect are played.Mud, the mobile sand completed simultaneously in processing Setting dewatering well and seugh (not showing dewatering well and seugh in figure) in base, in order to dewatering of foundation, foundation construction.
Conventional concrete exchange filling method is mainly changed to big small particle bone by the mud of the present invention, drift sand ground processing method Expect the crowded what method that is combined, be combined with the first different aggregate 11 of grain size and the second aggregate 12, the reduction aggregate of sufficient amount it Between gap, meanwhile, member-retaining portion mud, drifting sand layer 10, utilize mud, drifting sand layer 10 with backfill the first aggregate 11 and second Aggregate 12 blends, and increases the viscosity between the first aggregate 11 and the second aggregate 12, makes drifting sand layer 10, the first aggregate 11 and the Two aggregates, 12 three forms effective entirety, and the mud that ensures that treated, drift sand ground have enough foundation carrying energy Power, to meet design requirement.
Below using area as 14332m2, foundation structure form is pile-raft foundation, and the foundation pit structure that cutting depth is 6.3m is Example, wherein, the ground of the foundation pit structure is mud, drift sand ground basis, and ground situation is complicated, mud, drifting sand layer overall thickness Up to 500mm, design foundation bearing capacity requirement is not achieved completely, brings very big security risk to foundation construction, is applied to foundation Work brings certain difficulty, simultaneously as foundation pit bottom features as poor geologic condition, pile foundation are intensive, digging machine is caused to cannot be introduced into construction and is made Industry.With reference to the embodiment on foundation pit basis, be specifically described how mud using the present invention, the processing of drift sand ground processing method should The ground of foundation pit structure.
(1) it is manually formed after clearing up in mud, quicksand that certain altitude is removed in untreated mud, drift sand ground Mud, drifting sand layer.
Wherein, the mud that is eliminated, the thickness of quicksand are untreated mud, the thickness of drift sand ground 80%, i.e., 400mm, the mud of reservation, the thickness of drifting sand layer for untreated mud, drift sand ground thickness 20%, i.e. 100mm;
(2) manually to part mud, drifting sand layer cleared up, had bad luck, it is ensured that mud, drifting sand layer element task face shape Into;
(3) then, the first different aggregate of grain size and the second aggregate are mixed by certain match ratio, wherein, first Aggregate uses cobble of the grain size for 70mm, and the second aggregate uses rubble of the grain size for 12mm, and the mixing ratio of cobble and rubble is 3: 1, cobble is as backfill mud, the main backfill aggregate of drifting sand layer, and rubble is mainly used for filling the gap between cobble, using size The cobble and rubble of grain size are combined, can be with the gap between the reduction backfill aggregate of sufficient amount;
(4) mixed cobble and rubble are backfilled to the mud of excavation, in drifting sand layer, the backfill thickness of cobble and rubble Not less than untreated mud, the thickness of drift sand ground, i.e. the backfill thickness of cobble and rubble is not less than 500mm, due to cobble Harder and quality is much larger than mud, drifting sand layer with rubble quality, so, in backfill, cobble and rubble can nature to sinking Enter the mud to quality weakness, in drifting sand layer, with sinking for cobble and rubble, mud, drifting sand layer can gradually be gushed out upwards, make It obtains mud, drifting sand layer and the cobble backfilled, rubble to blend, further be filled between cobble and rubble using mud, drifting sand layer Gap, and increase the viscosity between cobble and rubble, the cobble after backfill, rubble and mud, drifting sand layer made to be formed effectively Entirety, ensure that treated mud, drift sand ground have enough foundation bearing capacitys, will to meet Foundation Design It asks, completes the processing of mud, drift sand ground;
Finally, after treatment concrete cushion and waterproof roll layer are laid on mud, drift sand ground, and dewatering well is set With seugh (dewatering well and seugh are not shown in figure), in order to dewatering of foundation, foundation construction.
The mud of the present invention, drift sand ground processing method remove mud, the mud in drift sand ground, quicksand using part, Mud, drifting sand layer are formed, then pounds to hit aggregate and is backfilling into mud, drifting sand layer, it is one that aggregate is made, which to melt with mud, drifting sand layer, Body not only reduces the cleaning amount of mud, quicksand, reduces manually and the input speed of application of material is fast, and the period is short, can be maximum Limit strives for interests of constructing, and is needed after the basic soft layer such as mud, quicksand is cleaned out completely, then pour compared to traditional The concrete cushion of concrete, at low cost, profit higher;But also mud, the speciality of drifting sand layer in itself can be utilized, increase Adhesive property between aggregate, the entirety for being formed securely and being stablized improve treated mud, the structural strength of drift sand ground. Manually mud, drift sand ground that part is excavated are cleared up simultaneously, had bad luck, machinery is avoided to enter the pile foundation region of ground, is kept away Exempt from the damage to pile foundation, the integrality of pile body is protected.
The present invention is described in detail above in association with accompanying drawings and embodiments, those skilled in the art can basis Above description makes the present invention many variations example.Thus, certain details in embodiment should not form limitation of the invention, The present invention will be using the range that the appended claims define as protection scope of the present invention.

Claims (5)

1. a kind of mud, drift sand ground processing method, which is characterized in that including step:
Manually in mud, quicksand that certain altitude is removed in untreated mud, drift sand ground, the mud after cleaning, stream are formed Layer of sand;
In after cleaning the mud, in drifting sand layer backfill aggregate to designed elevation, aggregate pound hit the mud, drifting sand layer and with The mud, drifting sand layer combine together, form treated mud, drift sand ground;
Wherein, the aggregate includes the first aggregate and the second aggregate, and the grain size of first aggregate is 40mm~120mm, described The grain size of second aggregate is 5mm~25mm;First aggregate is cobble, and second aggregate is rubble;And first bone Material and second aggregate are with 5:1~2:The mud, drifting sand layer are backfilled to after 1 match ratio mixing.
2. mud as described in claim 1, drift sand ground processing method, it is characterised in that:The height of the mud, drifting sand layer For the untreated mud, the height of drift sand ground 10%~15%.
3. mud as described in claim 1, drift sand ground processing method, it is characterised in that:First aggregate and described The backfill height of two aggregates is greater than or equal to the height of the untreated mud, drift sand ground.
4. mud as claimed in claim 3, drift sand ground processing method, it is characterised in that:Treated mud, the quicksand The content of first aggregate in ground is 60%, and the content of second aggregate is 30%.
5. mud as described in claim 1, drift sand ground processing method, which is characterized in that further include step:
In being laid with concrete cushion on treated the mud, drift sand ground;
In laying waterproof coiled material layer on the concrete cushion.
CN201510666141.1A 2015-10-15 2015-10-15 A kind of mud, drift sand ground processing method Active CN105297700B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112359890B (en) * 2020-11-11 2022-09-06 中国电建集团华东勘测设计研究院有限公司 Earth-rock dam foundation geological defect silt squeezing and filling changing treatment method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1047716A (en) * 1989-05-29 1990-12-12 山西省机械施工公司 Utilize the method and the facility of industrial residue comprehensive treatment soft foundation
CN101008178A (en) * 2007-01-12 2007-08-01 中山大学 Soft base processing construction process using excavating and stirring method
CN101363220A (en) * 2008-09-02 2009-02-11 徐州建筑职业技术学院 Construction waste squeezing silt backfill method
CN102383413A (en) * 2011-08-31 2012-03-21 东北大学 Method for constructing strengthened saturated-flow plastic silt soft soil foundation
CN103437337A (en) * 2013-08-21 2013-12-11 国家电网公司 Method for reinforcing soft soil foundation in cushion layer replacement mode
CN104358245A (en) * 2014-11-12 2015-02-18 中国电建集团华东勘测设计研究院有限公司 Method for processing soft foundation of hydraulic structure

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1047716A (en) * 1989-05-29 1990-12-12 山西省机械施工公司 Utilize the method and the facility of industrial residue comprehensive treatment soft foundation
CN101008178A (en) * 2007-01-12 2007-08-01 中山大学 Soft base processing construction process using excavating and stirring method
CN101363220A (en) * 2008-09-02 2009-02-11 徐州建筑职业技术学院 Construction waste squeezing silt backfill method
CN102383413A (en) * 2011-08-31 2012-03-21 东北大学 Method for constructing strengthened saturated-flow plastic silt soft soil foundation
CN103437337A (en) * 2013-08-21 2013-12-11 国家电网公司 Method for reinforcing soft soil foundation in cushion layer replacement mode
CN104358245A (en) * 2014-11-12 2015-02-18 中国电建集团华东勘测设计研究院有限公司 Method for processing soft foundation of hydraulic structure

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