CN103195381B - A kind of cable tunnel construction of working shaft mud system - Google Patents

A kind of cable tunnel construction of working shaft mud system Download PDF

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Publication number
CN103195381B
CN103195381B CN201310108068.7A CN201310108068A CN103195381B CN 103195381 B CN103195381 B CN 103195381B CN 201310108068 A CN201310108068 A CN 201310108068A CN 103195381 B CN103195381 B CN 103195381B
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China
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mud
construction
detector
slurry
separator
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CN201310108068.7A
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CN103195381A (en
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陆小龙
杨文威
何真珍
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State Grid Corp of China SGCC
Shanghai Municipal Electric Power Co
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State Grid Corp of China SGCC
Shanghai Municipal Electric Power Co
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Abstract

The present invention relates to a kind of cable tunnel construction of working shaft mud system, including fresh Slurry Storage case, construction slurry groove, first mud detector, mud separator, useless slurry case, second mud detector, reclaim mud reserve tank and stuff box, described construction slurry groove one end is connected with fresh Slurry Storage case and stuff box respectively, the other end and the first mud detector connect, the first described mud detector connects mud separator entrance and useless slurry case respectively, described mud separator outlet is connected with reclaiming mud reserve tank, described recovery mud reserve tank connects the second mud detector and stuff box respectively, the second described mud detector is connected with stuff box. compared with prior art, the present invention has mud construction reliability height, can be effectively improved the advantages such as mud cyclic utilization rate.

Description

A kind of cable tunnel construction of working shaft mud system
Technical field
The present invention relates to mud system technical field, especially relate to a kind of cable tunnel construction of working shaft mud system.
Background technology
Along with improving constantly of national economy high speed development and whole people's living standard, the loading of Shanghai Power Network rises year by year, traditional comb lays and is difficult to meet the needs of power tie line between Central Substations, and selection difficulty that the underground space of urban congestion also makes comb path is increasing, it is necessary to adopt power cable tunnel to lay. Construction of working shaft is the important component part of power cable tunnel engineering construction. In the underground engineering construction of whole piece cable tunnel, encounter an a lot of difficult problem, as: due to the restriction of existing construction equipment, technique, make tunnel cross-section can not adopt most economical rectangular cross section; Need main line that well, different section require and branch line intersection to need well and ventilation shaft, equipment raise etc. to be required for excavating shaft in the circuit turning point in whole piece tunnel, at city's these wells centrally disposed that land used is nervous, difficulty is far longer than circuit constructing tunnel. The deficiencies such as mud during current construction of working shaft exists that cyclic utilization rate is not high, difficult quality guarantee after mud circulation.
Summary of the invention
Defect that the purpose of the present invention is contemplated to overcome above-mentioned prior art to exist and the cable tunnel construction of working shaft mud system that a kind of mud construction reliability is high, can be effectively improved mud cyclic utilization rate is provided.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of cable tunnel construction of working shaft mud system, including fresh Slurry Storage case, construction slurry groove, first mud detector, mud separator, useless slurry case, second mud detector, reclaim mud reserve tank and stuff box, described construction slurry groove one end is sequentially connected with fresh Slurry Storage case and stuff box, the construction slurry groove other end and the first mud detector connect, the first described mud detector connects mud separator entrance and useless slurry case respectively, described mud separator outlet is connected with reclaiming mud reserve tank, described recovery mud reserve tank connects the second mud detector and stuff box respectively, the second described mud detector is connected with stuff box,
Construction slurry groove obtains fresh mud from fresh Slurry Storage case and constructs, the index of the mud that the first mud detector detection is discharged from construction slurry groove, judge whether mud meets recovery index, if, then it is transported to mud separator be easily separated, if not, then it is transported to useless slurry case, mud separator is by isolated recovery slurry transportation to recovery mud reserve tank, the index reclaiming mud in mud reserve tank is reclaimed in second mud detector detection, mud fraction controlling instruction is sent to stuff box according to testing result, the index that stuff box reclaims mud according to this control instruction adjustment forms regenerated mud, and carry regenerated mud to construction slurry groove.
Described construction slurry trench bottom is provided with multiple slotted eye.
Described mud separator includes the vibrosieve and the swirler that are connected.
Being provided with the first valve between the first described mud detector and mud separator, be provided with the second valve between the first mud detector and useless slurry case, the first mud detector controls being turned on and off of the first valve and the second valve according to testing result.
Described fresh Slurry Storage case is connected to the mud mixing blender for configuring fresh mud.
Described fresh mud is composite sodium-based bentonite mud.
Compared with prior art, the present invention is by detecting mud index, it is ensured that the quality of circulating mud every time, in time mud index is adjusted, has the advantage that mud construction reliability is high, can be effectively improved mud cyclic utilization rate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail. The present embodiment is carried out premised on technical solution of the present invention, gives detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, a kind of cable tunnel construction of working shaft mud system, including fresh Slurry Storage case 1, construction slurry groove 2, first mud detector 3, mud separator 4, useless slurry case 5, second mud detector 6, reclaim mud reserve tank 7 and stuff box 8, described construction slurry groove 2 one end is sequentially connected with fresh Slurry Storage case 1 and stuff box 8, the other end and the first mud detector 3 connect, the first described mud detector 3 connects mud separator 4 entrance and useless slurry case 5 respectively, described mud separator 4 outlet is connected with reclaiming mud reserve tank 7, described recovery mud reserve tank 7 connects the second mud detector 6 and stuff box 8 respectively, the second described mud detector 6 is connected with stuff box 8. it is provided with multiple slotted eye bottom described construction slurry groove 2. described mud separator 4 includes the vibrosieve and the swirler that are connected. being provided with the first valve 9 between the first described mud detector 3 and mud separator 4, be provided with the second valve 10 between the first mud detector 3 and useless slurry case 5, the first mud detector 3 controls being turned on and off of the first valve 9 and the second valve 10 according to testing result.
The operation principle of above-mentioned cable tunnel construction of working shaft mud system is: construction slurry groove 2 obtains fresh mud from fresh Slurry Storage case 1 and constructs, the index of the mud that the first mud detector detection is discharged in construction slurry groove slotted eye, judge whether mud meets recovery index, if, then control the first valve 9 to open, slurry transportation is easily separated to mud separator 4, if not, then control the second valve 10 to open, by slurry transportation to useless slurry case 5, mud separator 4 is by isolated recovery slurry transportation to recovery mud reserve tank 7, and export soil slag waste material.Circulating mud is after isolation of purified, although removing many native slags being mixed into therebetween, but do not recover its original retaining wall performance, because mud is in use, will with foundation soil, groundwater contacts, and forming mud skin in flute wall surfaces, this will consume the bentonite composition in mud, and is weakened retaining wall performance by the pollution of cement composition in concrete and harmful ion. So needing the index reclaiming mud that the second mud detector 6 detection is reclaimed in mud reserve tank 7, mud fraction controlling instruction is sent to stuff box 8 according to testing result, the index that stuff box 8 reclaims mud according to this control instruction adjustment forms regenerated mud, make purification mud substantially recover original retaining wall performance, and carry regenerated mud to construction slurry groove 2.
Described fresh Slurry Storage case 1 is connected to the mud mixing blender for configuring fresh mud. Described fresh mud is composite sodium-based bentonite mud. Composite sodium-based bentonite mud is made up of sodium bentonite and heavy polymer, additive. Its retaining wall mechanism is: polymer molecule in the absorption cementation of flute wall surfaces, is polymer and mud skin that bentonite clay particle the collectively forms cementation to cell wall. Owing to have employed sodium bentonite, the expansion multiple after its aquation is more than 10 times of calcium-base bentonite, and bentonitic platelet structure is fully opened. Bridge joint effect between bentonitic platelet and high molecular polymer, can be formed and Bao Youren, fine and close mud skin at cell wall hole wall. Greatly reducing the leak-off of mud, make the fluid loss of mud reduce, thus reducing the disturbance to surrounding formations water content, making the stratum of hole wall periphery maintain the original state as far as possible, caving-preventing characteristic strengthens. Composite sodium-based bentonite mud also has relatively low solid concentration, has the advantages such as certain SELECTIVE FLOCCULATION, low close low shear force.

Claims (5)

1. a cable tunnel construction of working shaft mud system, it is characterized in that, including fresh Slurry Storage case, construction slurry groove, first mud detector, mud separator, useless slurry case, second mud detector, reclaim mud reserve tank and stuff box, described construction slurry groove one end is sequentially connected with fresh Slurry Storage case and stuff box, the construction slurry groove other end and the first mud detector connect, the first described mud detector connects mud separator entrance and useless slurry case respectively, described mud separator outlet is connected with reclaiming mud reserve tank, described recovery mud reserve tank connects the second mud detector and stuff box respectively, the second described mud detector is connected with stuff box, it is provided with the first valve between the first described mud detector and mud separator, it is provided with the second valve between the first mud detector and useless slurry case, first mud detector controls being turned on and off of the first valve and the second valve according to testing result,
Construction slurry groove obtains fresh mud from fresh Slurry Storage case and constructs, the index of the mud that the first mud detector detection is discharged from construction slurry groove, judge whether mud meets recovery index, if, then it is transported to mud separator be easily separated, if not, then it is transported to useless slurry case, mud separator is by isolated recovery slurry transportation to recovery mud reserve tank, the index reclaiming mud in mud reserve tank is reclaimed in second mud detector detection, mud fraction controlling instruction is sent to stuff box according to testing result, the index that stuff box reclaims mud according to this control instruction adjustment forms regenerated mud, and carry regenerated mud to construction slurry groove.
2. a kind of cable tunnel according to claim 1 construction of working shaft mud system, it is characterised in that described construction slurry trench bottom is provided with multiple slotted eye.
3. a kind of cable tunnel according to claim 1 construction of working shaft mud system, it is characterised in that described mud separator includes the vibrosieve and the swirler that are connected.
4. a kind of cable tunnel according to claim 1 construction of working shaft mud system, it is characterised in that described fresh Slurry Storage case is connected to the mud mixing blender for configuring fresh mud.
5. a kind of cable tunnel according to claim 1 construction of working shaft mud system, it is characterised in that described fresh mud is composite sodium-based bentonite mud.
CN201310108068.7A 2013-03-29 2013-03-29 A kind of cable tunnel construction of working shaft mud system Active CN103195381B (en)

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CN103195381B true CN103195381B (en) 2016-06-08

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103850660A (en) * 2014-03-13 2014-06-11 中石化胜利建设工程有限公司 Mud circulating method and circulating system for cast-in-place pile construction
CN107460867B (en) * 2017-08-29 2020-06-02 上海市基础工程集团有限公司 Rapid adjusting method for circulating slurry performance

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2483502Y (en) * 2001-06-01 2002-03-27 宜昌黑旋风工程机械有限公司 Mud purification apparatus
CN101565945A (en) * 2009-05-19 2009-10-28 上海隧道工程股份有限公司 Application method of composite sodium-based bentonite on construction of underground continuous wall
CN203175441U (en) * 2013-03-29 2013-09-04 国家电网公司 Mud system used for cable tunnel working well construction

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3659782B2 (en) * 1997-11-21 2005-06-15 戸田建設株式会社 Slurry property measuring system and method, and muddy water treatment system and method using the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2483502Y (en) * 2001-06-01 2002-03-27 宜昌黑旋风工程机械有限公司 Mud purification apparatus
CN101565945A (en) * 2009-05-19 2009-10-28 上海隧道工程股份有限公司 Application method of composite sodium-based bentonite on construction of underground continuous wall
CN203175441U (en) * 2013-03-29 2013-09-04 国家电网公司 Mud system used for cable tunnel working well construction

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