CN1115468C - Underground excavating construction method of underground structure - Google Patents
Underground excavating construction method of underground structure Download PDFInfo
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- CN1115468C CN1115468C CN 00124869 CN00124869A CN1115468C CN 1115468 C CN1115468 C CN 1115468C CN 00124869 CN00124869 CN 00124869 CN 00124869 A CN00124869 A CN 00124869A CN 1115468 C CN1115468 C CN 1115468C
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Abstract
The present invention relates to an underground excavating construction method of underground structures. The method comprises the following steps: a leading shed top and side walls are formed in soil towards an excavating direction; then, supporting and excavation are carried out. The leading shed top is composed of a row of concrete columns. The concrete columns are formed in the following way: holes are formed in the soil, and simultaneously, the soil surrounding the holes is softened to a predetermined depth; then, a turning spray treatment is carried out for the soil surrounding the holes at moderate pressure generating no inverse slurry, etc. along the longitudinal direction of the holes; subsequently, a treatment of mixing cement paste and soil is carried out for the surrounding soil in the region after the turning spray treatment; finally, the cement paste of the turning spray and the softened soil are stirred and mixed in a mechanical mode.
Description
Technical field
The present invention relates to field of civil engineering, particularly relate to underground structure, such as, the construction of underground garage or subterranean tunnel.
Background technology
Along with the needs of urban development, require to build a large amount of underground structures, such as, underground garage, tunnel etc., the excavation construction of these underground structures comprises hidden construction process and cut and cover method, cut and cover method influences road traffic, so present people usually adopt the tunneling construction method.At publication number is in the patent application prospectus of CN87100318A, a kind of secretly digging method with predisposed roof is disclosed, this method such as, the outer rim of subway tunnel is holed, carry out pressure grouting afterwards, insert reinforcing cage within it, form the cement paste beam, form many beams in this manner, form leading ceiling thus, carry out supporting and excavation afterwards, the shortcoming of this technology is: owing to insert reinforcing cage, the diameter of beam is bigger, so the pressure of grouting is higher, thereby can cause earth heaving, emit the rough sledding of slurry and anti-slurry, pollute the environment thus.Diameter owing to beam is bigger in addition, and rig is bigger like this, thereby operating expenses is higher, and can't adapt to the occasion of the underground construction in less space.Also have, above-mentioned beam is formed by cement paste fully, so its cost is higher, construction sequence is more, and corresponding apparatus is also more, such as, require to use independent auger, independent pressure grouting system etc.
The content of invention
The object of the present invention is to provide a kind of tunneling job practices of new underground structure, it can adapt to various construction environments, can environment pollution, and the volume of construction equipment is reduced.
Above-mentioned purpose of the present invention is that the tunneling job practices by the 1st kind of following underground structure realizes that this method comprises the steps:
Towards the structure tunneling direction, in the soil body, form leading ceiling part and abutment wall part along its outer rim, carry out supporting and excavation operation afterwards, at least one part in above-mentioned leading ceiling part and the abutment wall part is to be made of the post row that a plurality of cement-soil posts form, and the formation technology of each cement earth pillar is such, pore-forming on one side in the soil body at first, the soil body around this hole is softened processing on one side, until desired depth, follow along the length direction in the hole of above-mentioned formation, according to not producing anti-slurry, emit slurry, run the pressure of slurry or earth heaving, the surrounding soil in this hole is carried out the churning cement paste handle, and in this hole, be positioned at the surrounding soil that has carried out the zone that above-mentioned churning cement paste handles and carry out the mix processing of cement paste and the soil body, mechanically the cement paste and the above-mentioned softening soil body that above-mentioned churning is gone out stirs, and mixes.
In the 1st kind of above-mentioned job practices, the softening processing of the best above-mentioned soil body is performed such, by jet fluid in the soil body, the soil body that has sprayed above-mentioned fluid is carried out machine cuts and/or stirring, above-mentioned leading ceiling is an arch form, it is formed by a plurality of leading ceiling sections, each leading ceiling sections is upwards steeved slightly according to the central axis of relative structure, and the mode that the adjacent sections in front and back overlaps mutually forms, and, form adjacent cement earth pillar among the post row according to the mode of mutual overlap joint from the cross section.
In the 1st kind of above-mentioned job practices, best above-mentioned fluid is a water, it is to carry out towards the direction of this hole openend from bottom, above-mentioned hole that the mix of processing of above-mentioned churning cement paste and cement paste and the soil body is handled, before the abutment wall of above-mentioned structure partly forms, form outward extending a plurality of cement-soil earth anchors in its outside, above-mentioned structure are underground garage, or the tunnel.
In the 1st kind of above-mentioned job practices, best above-mentioned fluid is a water, it is to carry out towards the direction of this bottom, hole from bottom, above-mentioned hole that the mix of processing of above-mentioned churning cement paste and cement paste and the soil body is handled, and above-mentioned pore-forming is by bit bore, or jet fluid forms in the soil body.
In the 1st kind of above-mentioned job practices, be preferably in when forming the cement earth pillar, in above-mentioned cement earth pillar inside, or avris inserts the strengthening part that is formed by reinforcing bar or plastics reinforcing member.
Above-mentioned purpose of the present invention also can realize that this comprises the steps: by the tunneling job practices of following the 2nd kind of structure
Towards the structure tunneling direction, in the soil body, form leading ceiling part and abutment wall part along its outer rim, carry out supporting and excavation operation afterwards, at least one part in above-mentioned leading ceiling part and the abutment wall part is to be made of the post row that a plurality of cement-soil posts form, and the formation technology of each cement earth pillar is such, pore-forming in the soil body at first, until desired depth, follow along the length direction in the hole of above-mentioned formation, according to not producing anti-slurry, emit slurry, run the pressure of slurry or earth heaving, the surrounding soil in this hole is carried out the churning cement paste handle, and in this hole, the surrounding soil that is positioned at the zone of having carried out above-mentioned churning cement paste processing carries out the mix processing of the cement paste and the soil body, and mechanically cement paste and the above-mentioned surrounding soil that above-mentioned churning is gone out stirs, and mixes.
In the 2nd kind of above-mentioned job practices, preferably above-mentioned leading ceiling is an arch form, it is formed by a plurality of leading ceiling sections, each leading ceiling sections is upwards steeved slightly according to the central axis of relative structure, and the mode that the adjacent sections in front and back overlaps mutually forms, and, form adjacent cement earth pillar among the post row according to the mode of mutual overlap joint from the cross section.
In the 2nd kind of above-mentioned job practices, it is to carry out towards the direction of this hole openend from bottom, above-mentioned hole that the mix of processing of best above-mentioned churning cement paste and cement paste and the soil body is handled, above-mentioned pore-forming is to pass through bit bore, or jet fluid forms in the soil body, above-mentioned structure are underground garage, or the tunnel.
In the 2nd kind of above-mentioned job practices, it is to carry out towards the direction of this bottom, hole from bottom, above-mentioned hole that the mix of processing of best above-mentioned churning cement paste and cement paste and the soil body is handled, before the abutment wall of above-mentioned structure partly forms, form outward extending a plurality of cement-soil earth anchors in its outside.
In the 2nd kind of above-mentioned job practices, be preferably in when forming the cement earth pillar, in above-mentioned cement earth pillar inside, or avris inserts the strengthening part that is formed by reinforcing bar or plastics reinforcing member.
Principle of the present invention is: because the cement earth pillar has favorable waterproof property, have certain intensity again simultaneously, so be applied in the tunneling construction of structure.If but directly with churning technology, or the technology of cement mix is applied in the tunneling construction of structure individually, can produce following problems, though the equipment of churning technology is little, can satisfy the demand of the crawl space operation of structure construction, but when along continuous straight runs formed the cement earth pillar by churning technology, the high pressure that is produced can make earth heaving in the soil body, produce a large amount of anti-slurries, emit slurry, run the defective of slurry, and be not suitable for the pan soil operation, the cement use amount is bigger, and cost is higher; On the other hand, though cement mix technology does not produce high pressure when construction, thereby can form well in the structure, such as, the leading ceiling of horizontal direction, but the desired equipment of this cement mix technology is excessive, and very benzene is heavy, be not suitable for the needs of underground structure construction, its equipment cost is also excessive in addition.The inventor combines above-mentioned two kinds of technologies well, gives full play to advantage separately, and avoids shortcoming separately, thereby formed the present invention.Promptly, the inventor is by improving churning equipment, make it have two kinds of functions of churning and cement mix, like this when this equipment creeps into, can form the hole, simultaneously can be by the softening soil body of water spray, and, make the hole soil body on every side lax by the stirring vane on the cast bar in the churning equipment, extracting the cast bar out afterwards, on one side with middle pressure, promptly do not produce anti-slurry, emit slurry, run the suitable pressure of slurry and earth heaving, cement paste is ejected in the soil body on every side of hole, on one side by the stirring vane on the above-mentioned cast bar, with around the above-mentioned hole, the soil body that warp softens carries out mix with cement paste, though here, cement paste is to eject and do not reach in the soil body enough far away with middle pressure, but owing to by stirring vane the soil body and cement paste are carried out mix, thereby remedied the deficiency that above-mentioned middle pressure sprays the cement-soil column diameter of reinforcing slurries and causing, can make the final diameter of cement earth pillar satisfy the regulation requirement, quite the effect of high-pressure rotary-spray.Because when construction, the equipment of realizing the inventive method is based on churning equipment, its size is less like this, the needs that can adapt to crawl space more in the underground structure construction, equipment investment is also less, handles owing to the hole soil body being carried out the cement-soil mix in addition, thereby has avoided the defective that adopts high pressure to bring, such as earth heaving, problems such as anti-slurry.
Compare with foregoing prior art, the tunneling job practices of the 1st kind of underground structure of the present invention can be fit to the hardpan operation, do not cause environment pollution, do not cause earth heaving, the cement paste use amount is less, and operation is less, only needs churning equipment is improved a little, just can use a kind of churning equipment of small-sized band stirring vane, once finish (one-in-and-one-out) operation.Owing to mechanically the cement paste and the soil body are stirred, mix, can in the relative broad range around the hole, carry out the mix of the soil body and cement paste like this, can be when reducing the pressure burden of churning processing, reach the effect (being corresponding diameter) of high-pressure rotary-spray, and the cement paste consumption is few, and cost is lower.
Compare with foregoing prior art, the tunneling job practices of the 2nd kind of underground structure of the present invention does not cause environment pollution, do not cause earth heaving, the cement paste use amount is less, operation is less, only need improve a little, just can use a kind of churning equipment of small-sized band stirring vane, once finish (one-in-and-one-out) operation churning equipment.Owing to mechanically the cement paste and the soil body are stirred, mix, can in the relative broad range around the hole, carry out the mix of the soil body and cement paste like this, can be when reducing the pressure burden of churning processing, reach the effect (being corresponding diameter) of high-pressure rotary-spray, and the cement paste consumption is few, and cost is lower.The tunneling job practices of the 2nd kind of underground structure is fit to the soft foundation job execution.
Structure as tunneling of the present invention construction object can be basement, underground store, underground garage, the underground street of crossing of People's Bank of China, subterranean tunnel, or various buried structure things such as massif tunnel.
With reference to the accompanying drawings, the embodiment to the tunneling job practices of underground structure of the present invention specifically describes.
Brief Description Of Drawings
Fig. 1 is the phantom drawing of the subterranean tunnel of employing tunneling job practices construction of the present invention.
The description of embodiments of the invention
As shown in Figure 1, bidirectional tunnel 1 shown in Figure 1 comprises tunnel main body 4, be formed with the cement earth pillar row 3 of the level that is inserted with muscle in it between each tunnel main body 4, be formed with cement-soil earth anchor 2 in the outside of each tunnel main body 4, when concrete construction, at first face down and form vertical well in operation (not shown) from ground, from this vertical well in operation, along tunneling direction, carry out the construction of the 1st sections 4a of tunnel main body 4, promptly adopt the technology of cement earth pillar of the present invention, form the cement-soil earth anchor 2 in the outside, form leading ceiling part and abutment wall part then, then carry out the supporting and the excavation operation of the 1st sections, then, carry out the construction of the 2nd sections 4a of tunnel main body 4, corresponding cement earth pillar row 3 in above-mentioned the 1st sections 4a and the 2nd sections overlaps mutually, and the longitudinal axis of the 1st sections 4a and the relative tunnel of the 2nd sections 4b main body, slightly upwards certain angle.Above-mentioned leading ceiling part is formed by cement earth pillar row 3, this cement earth pillar row 3 is formed by a plurality of cement earth pillars 5, the formation technology of each cement earth pillar 5 is such, pore-forming in the soil body at first, until desired depth, follow along the length direction in the hole of above-mentioned formation, according to not producing anti-slurry, emit slurry, run the pressure of slurry or earth heaving, the surrounding soil in this hole is carried out the churning cement paste handle, and in this hole, be positioned at the surrounding soil that has carried out the zone that above-mentioned churning cement paste handles and carry out the mix processing of cement paste and the soil body, mechanically, such as, the stirring vane that forms on the cast bar in the churning equipment stirs the cement paste and the above-mentioned soil body that above-mentioned churning goes out, and mixes.
Claims (10)
1. the tunneling job practices of a underground structure, this method comprises the steps:
Towards the structure tunneling direction, in the soil body, form leading ceiling part and abutment wall part along its outer rim, carry out supporting and excavation operation afterwards, at least one part in above-mentioned leading ceiling part and the abutment wall part is to be made of the post row that a plurality of cement-soil posts form, and the formation technology of each cement earth pillar is such, pore-forming on one side in the soil body at first, the soil body around this hole is softened processing on one side, until desired depth, follow along the length direction in the hole of above-mentioned formation, according to not producing anti-slurry, emit slurry, run the pressure of slurry or earth heaving, the surrounding soil in this hole is carried out the churning cement paste handle, and in this hole, be positioned at the surrounding soil that has carried out the zone that above-mentioned churning cement paste handles and carry out the mix processing of cement paste and the soil body, mechanically the cement paste and the above-mentioned softening soil body that above-mentioned churning is gone out stirs, and mixes.
2. method according to claim 1, it is characterized in that the softening processing of the above-mentioned soil body is performed such, by jet fluid in the soil body, the soil body that has sprayed above-mentioned fluid is carried out machine cuts and/or stirring, above-mentioned leading ceiling is an arch form, it is formed by a plurality of leading ceiling sections, each leading ceiling sections is upwards steeved slightly according to the central axis of relative structure, and the mode that the adjacent sections in front and back overlaps mutually forms, and, form adjacent cement earth pillar among the post row according to the mode of mutual overlap joint from the cross section.
3. method according to claim 2, it is characterized in that above-mentioned fluid is a water, it is to carry out towards the direction of this hole openend from bottom, above-mentioned hole that the mix of processing of above-mentioned churning cement paste and cement paste and the soil body is handled, before the abutment wall of above-mentioned structure partly forms, form outward extending a plurality of cement-soil earth anchors in its outside, above-mentioned structure are underground garage, or the tunnel.
4. method according to claim 2, it is characterized in that above-mentioned fluid is a water, it is to carry out towards the direction of this bottom, hole from bottom, above-mentioned hole that the mix of processing of above-mentioned churning cement paste and cement paste and the soil body is handled, above-mentioned pore-forming is by bit bore, or jet fluid forms in the soil body.
5. method according to claim 1 is characterized in that when forming the cement earth pillar in above-mentioned cement earth pillar inside, or avris inserts the strengthening part that is formed by reinforcing bar or plastics reinforcing member.
6. the tunneling job practices of a underground structure, this method comprises the steps:
Towards the structure tunneling direction, in the soil body, form leading ceiling part and abutment wall part along its outer rim, carry out supporting and excavation operation afterwards, at least one part in above-mentioned leading ceiling part and the abutment wall part is to be made of the post row that a plurality of cement-soil posts form, and the formation technology of each cement earth pillar is such, pore-forming in the soil body at first, until desired depth, follow along the length direction in the hole of above-mentioned formation, according to not producing anti-slurry, emit slurry, run the pressure of slurry or earth heaving, the surrounding soil in this hole is carried out the churning cement paste handle, and in this hole, the surrounding soil that is positioned at the zone of having carried out above-mentioned churning cement paste processing carries out the mix processing of the cement paste and the soil body, and mechanically cement paste and the above-mentioned surrounding soil that above-mentioned churning is gone out stirs, and mixes.
7. method according to claim 6, it is characterized in that above-mentioned leading ceiling is an arch form, it is formed by a plurality of leading ceiling sections, each leading ceiling sections is upwards steeved slightly according to the central axis of relative structure, and the mode that the adjacent sections in front and back overlaps mutually forms, and, form adjacent cement earth pillar among the post row according to the mode of mutual overlap joint from the cross section.
8. method according to claim 6, the mix processing that it is characterized in that processing of above-mentioned churning cement paste and cement paste and the soil body is to carry out towards the direction of this hole openend from bottom, above-mentioned hole, above-mentioned pore-forming is to pass through bit bore, or jet fluid forms in the soil body, above-mentioned structure are underground garage, or the tunnel.
9. method according to claim 6, the mix processing that it is characterized in that processing of above-mentioned churning cement paste and cement paste and the soil body is to carry out towards the direction of this bottom, hole from bottom, above-mentioned hole, before the abutment wall of above-mentioned structure partly forms, form outward extending a plurality of cement-soil earth anchors in its outside.
10. method according to claim 6 is characterized in that when forming the cement earth pillar in above-mentioned cement earth pillar inside, or avris inserts the strengthening part that is formed by reinforcing bar or plastics reinforcing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00124869 CN1115468C (en) | 2000-09-20 | 2000-09-20 | Underground excavating construction method of underground structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00124869 CN1115468C (en) | 2000-09-20 | 2000-09-20 | Underground excavating construction method of underground structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1285458A CN1285458A (en) | 2001-02-28 |
| CN1115468C true CN1115468C (en) | 2003-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00124869 Expired - Fee Related CN1115468C (en) | 2000-09-20 | 2000-09-20 | Underground excavating construction method of underground structure |
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| Country | Link |
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| CN (1) | CN1115468C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297729C (en) * | 2004-03-26 | 2007-01-31 | 田小红 | A potholing method |
| CN100348835C (en) * | 2005-06-07 | 2007-11-14 | 上海市城市建设设计研究院 | Construction method of subsurface excavation and layer added by using top layer of existed basement as native cover board |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425801C (en) * | 2005-06-17 | 2008-10-15 | 上海市隧道工程轨道交通设计研究院 | Counter pulling device used in underground pipe culvert linear dark digging |
| CN100425802C (en) * | 2005-06-17 | 2008-10-15 | 上海市隧道工程轨道交通设计研究院 | Counter pulling method used in underground pipe culvert linear dark digging |
| KR101012640B1 (en) * | 2009-03-06 | 2011-02-09 | 주식회사 엔티에스이앤씨 | Method for constructing structure for underground tunnel |
| KR101069706B1 (en) * | 2009-04-07 | 2011-10-04 | 주식회사 엔티에스이앤씨 | Method for constructing structure for forming underground tunnel on boundary of rock bed |
| CN101864959B (en) * | 2009-04-17 | 2013-06-12 | 中铁工程设计咨询集团有限公司 | Method for tunneling construction of main structure of underground station |
| CN111042823B (en) * | 2019-12-30 | 2021-12-28 | 中国铁建投资集团有限公司 | Non-blasting through method for tunnel in complex environment |
-
2000
- 2000-09-20 CN CN 00124869 patent/CN1115468C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297729C (en) * | 2004-03-26 | 2007-01-31 | 田小红 | A potholing method |
| CN100348835C (en) * | 2005-06-07 | 2007-11-14 | 上海市城市建设设计研究院 | Construction method of subsurface excavation and layer added by using top layer of existed basement as native cover board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1285458A (en) | 2001-02-28 |
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