CN105673020A - Construction method for remote and targeted filling, consolidating and grouting at two-line collapse tunnel mountaintop - Google Patents
Construction method for remote and targeted filling, consolidating and grouting at two-line collapse tunnel mountaintop Download PDFInfo
- Publication number
- CN105673020A CN105673020A CN201610103848.6A CN201610103848A CN105673020A CN 105673020 A CN105673020 A CN 105673020A CN 201610103848 A CN201610103848 A CN 201610103848A CN 105673020 A CN105673020 A CN 105673020A
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- China
- Prior art keywords
- grouting
- slip casting
- tunnel
- filling
- targeting
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
- E21D9/002—Injection methods characterised by the chemical composition used
Abstract
A construction method for remote and targeted filling, consolidating and grouting at a two-line collapse tunnel mountaintop comprises the steps that precise measurement is conducted at the mountaintop to determine the longitudinal and transverse range of targeted grouting; drilling positions are determined according to a designed layout plan, and a drilling platform is excavated; a row of holes is formed in each of the two sides of a tunnel, and cement-sodium silicate double-liquid grouting is adopted for making a curtain to create good conditions for filling, consolidating and collapse body grouting; about two days after grouting at the mountaintop, a loose collapse body is basically consolidated, and then building of a pipe shed and grouting can be started in a cave; after double-liquid slurry is injected at designed positions of the ground surface to form the curtain, the grouting effect of the loose collapse body is guaranteed; about two days after filling, consolidating and grouting at the mountaintop, the loose collapse body is basically consolidated, the drilling speed of the pipe shed in the cave is effectively increased, the grouting effect is effectively improved, excavation and support are obviously accelerated in each cycle, and the length is increased to 10 m or above from original 4 m each month. The collapse treatment progress is accelerated, and good technical and economic effects are achieved.
Description
Technical field
The present invention relates to a kind of double track tunnel large scale landside that is effectively improved and process the grouting method of progress, specifically, be the construction technology carrying out long-range targeting filling consolidation slip casting on earth's surface.
Background technology
Those suitable No. two tunnels occurred altogether 6 times cave within 17 day time, and hole ejects and shows 3 places and collapse cave, and sagging total amount is about 300m3, discovery crack, many places, crack the widest part is 5cm. Adopt big outer limbMiddle pipe canopy coordinatesSteel tube shed, carries out arch slip casting in hole, the long 15m/ root of steel tube shed,The long 6m/ root of middle pipe canopy, 2.5m/ ring, outer limb is 40 °, the equal 0.4m of circumferential distance. Due to caving zone Rock Bed Dislocation, space is big, hole very difficult, and almost every pipe canopy all cannot be got to design length and just blocks, and often the circulation slip casting time takes more than 20 skies, monthly excavation and just a construction only about 4m, and progress is very slow, construction cost height.
Summary of the invention
The purpose of the present invention is that and overcomes the deficiency that in hole, sump remedy exists, it is proposed to a kind of effective method accelerating landslide tunnel excavation and first, the method construction technology is simple, practical, economical, efficient.
The technical scheme is that a kind of construction method consolidating slip casting in mountain top targeting filling. It is characterized in that: carry out according to the following step:
1. accurately measure on mountain top, it is determined that targeting slip casting longitudinally, laterally scope.
2. determine bore position by the site plan of design, and dig out drilling platform.
3. each round in both sides, tunnel, adopts cement-water glass double grouting to carry out curtain, reinforces landslide body slip casting for filling and creates good conditions.
4. after the slip casting of mountain top about 2 days, incoherent slump cube consolidated substantially, just can start to beat in hole pipe canopy and slip casting.
Above-mentioned boring scope, the degree of depth must be determined according to measurement data, and boring must be vertically, it is ensured that range of grouting.
Above-mentioned cement soluble glass paste must set match ratio through test, it is ensured that serosity can be effectively formed curtain.
Present invention have the advantage that and good effect:
1. after earth's surface design attitude note dual slurry forms curtain, it is ensured that incoherent slump cube slip casting effect.
2. after mountain top filling consolidation grouting about 2 days, incoherent slump cube consolidated substantially, and in hole, pipe canopy penetration rate, slip casting effect are effectively improved, and often circulation excavation and supporting are substantially accelerated, original monthly 4m bring up to more than 10m.
3. accelerate sump remedy progress, achieve good techno-economic effect.
Accompanying drawing explanation
Fig. 1 is that longitudinally figure is arranged in Tunnel Landslide surface grouting hole.
Fig. 2 is Tunnel Landslide surface grouting hole layout level to figure.
Detailed description of the invention
As shown in Figure 1-2, a kind of construction method in landslide mountain top, tunnel targeting slip casting, specific implementation process is as follows: 1. accurately measure Tunnel Landslide section excavating sideline on mountain top, it is determined that range of grouting. 2. dig out drilling platform by the injected hole layout drawing of design on mountain top, see accompanying drawing 1. 3. both sides, tunnel respectively set row's injected hole, adopt cement-sodium silicate double liquid slip casting to form curtain. 4. incoherent slump cube is carried out grouting and reinforcing, treat that incoherent slump cube consolidates substantially, excavate after playing pipe canopy, slip casting in hole.
A kind of construction method of the long-range targeting filling consolidation slip casting in mountain top, tunnel of caving at two-wire, it is characterised in that: carry out according to the following step: 1. accurately measure on mountain top, it is determined that remotely targeting slip casting longitudinally, laterally scope. 2. determine bore position by the site plan of design, and dig out drilling platform. 3. each round in both sides, tunnel, adopts cement-water glass double grouting to carry out curtain, reinforces landslide body slip casting for filling and creates good conditions. 4. after the slip casting of mountain top about 2 days, incoherent slump cube consolidated substantially, just can start to beat in hole pipe canopy and slip casting.
Mountain top is measured and is wanted accurately, it is necessary to accurately release Tunnel Landslide section excavating sideline, it is determined that slip casting targeting scope.
Being crucial for applying the dual slurry match ratio of curtain, serosity goes out Grouting Pipe and can not solidify too fast, can not flow too remote, can be effectively formed curtain.
Earth's surface targeting inlet well scope, the degree of depth must be determined according to measurement data, and boring must be vertically, it is ensured that range of grouting and effect.
Claims (4)
1. the construction method consolidating slip casting in the long-range targeting filling in two-wire landslide mountain top, tunnel, it is characterised in that: carry out according to the following step, 1. accurately measure on mountain top, it is determined that remotely targeting slip casting longitudinally, laterally scope; 2. determine bore position by the site plan of design, and dig out drilling platform; 3. each round in both sides, tunnel, adopts cement-water glass double grouting to carry out curtain, reinforces landslide body slip casting for filling and creates good conditions; 4. after the slip casting of mountain top about 2 days, incoherent slump cube consolidated substantially, just can start to beat in hole pipe canopy and slip casting.
2. the construction method of a kind of long-range targeting filling consolidation slip casting in mountain top, tunnel of caving at two-wire according to claim 1, it is characterised in that: mountain top is measured and is wanted accurately, it is necessary to accurately release Tunnel Landslide section excavating sideline, it is determined that slip casting targeting scope.
3. the construction method of a kind of long-range targeting filling consolidation slip casting in mountain top, tunnel of caving at two-wire according to claim 1, it is characterized in that: the dual slurry match ratio being used for applying curtain is crucial, serosity goes out Grouting Pipe and can not solidify too fast, can not flow too remote, can be effectively formed curtain.
4. the construction method of a kind of long-range targeting filling consolidation slip casting in mountain top, tunnel of caving at two-wire according to claim 1, it is characterized in that: earth's surface targeting inlet well scope, the degree of depth must be determined according to measurement data, boring must be vertically, it is ensured that range of grouting and effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610103848.6A CN105673020A (en) | 2016-02-25 | 2016-02-25 | Construction method for remote and targeted filling, consolidating and grouting at two-line collapse tunnel mountaintop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610103848.6A CN105673020A (en) | 2016-02-25 | 2016-02-25 | Construction method for remote and targeted filling, consolidating and grouting at two-line collapse tunnel mountaintop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105673020A true CN105673020A (en) | 2016-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610103848.6A Pending CN105673020A (en) | 2016-02-25 | 2016-02-25 | Construction method for remote and targeted filling, consolidating and grouting at two-line collapse tunnel mountaintop |
Country Status (1)
| Country | Link |
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| CN (1) | CN105673020A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930769A (en) * | 2017-05-07 | 2017-07-07 | 中铁十八局集团有限公司 | One kind is for specific region direction and location grouting strengthening method in the huge talus loose media of macroporosity |
| CN108506020A (en) * | 2017-07-06 | 2018-09-07 | 中铁十八局集团有限公司 | A kind of huge loose U-shaped curtain concretion method of talus earth's surface foam slip casting of tunnel entrance |
Citations (5)
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|---|---|---|---|---|
| KR100632858B1 (en) * | 2004-10-19 | 2006-10-13 | 서동현 | Construction method of three arch excavation tunnel |
| CN103628885A (en) * | 2013-11-05 | 2014-03-12 | 中交一公局第三工程有限公司 | Tunnel exit cover-excavation construction method of Ultra-shadow buried tunnel |
| CN204000900U (en) * | 2014-07-17 | 2014-12-10 | 陕西路桥集团第一工程有限公司 | A kind of ruggedized construction that is applied to the landslide of unsymmetrial loading tunnel hole |
| CN104389618A (en) * | 2014-10-13 | 2015-03-04 | 中铁二院重庆勘察设计研究院有限责任公司 | Method for constructing multiple-arch tunnel hole body large room-free pipe shed support |
| CN105201532A (en) * | 2015-09-11 | 2015-12-30 | 中铁九局集团第二工程有限公司 | Ring excavation construction method for underground large-span spherical-cap-shaped dome under weak surrounding rock |
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2016
- 2016-02-25 CN CN201610103848.6A patent/CN105673020A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100632858B1 (en) * | 2004-10-19 | 2006-10-13 | 서동현 | Construction method of three arch excavation tunnel |
| CN103628885A (en) * | 2013-11-05 | 2014-03-12 | 中交一公局第三工程有限公司 | Tunnel exit cover-excavation construction method of Ultra-shadow buried tunnel |
| CN204000900U (en) * | 2014-07-17 | 2014-12-10 | 陕西路桥集团第一工程有限公司 | A kind of ruggedized construction that is applied to the landslide of unsymmetrial loading tunnel hole |
| CN104389618A (en) * | 2014-10-13 | 2015-03-04 | 中铁二院重庆勘察设计研究院有限责任公司 | Method for constructing multiple-arch tunnel hole body large room-free pipe shed support |
| CN105201532A (en) * | 2015-09-11 | 2015-12-30 | 中铁九局集团第二工程有限公司 | Ring excavation construction method for underground large-span spherical-cap-shaped dome under weak surrounding rock |
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| 杜静梅: "隧道超长大体积软岩塌方处理技术", 《国防交通工程与技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930769A (en) * | 2017-05-07 | 2017-07-07 | 中铁十八局集团有限公司 | One kind is for specific region direction and location grouting strengthening method in the huge talus loose media of macroporosity |
| CN108506020A (en) * | 2017-07-06 | 2018-09-07 | 中铁十八局集团有限公司 | A kind of huge loose U-shaped curtain concretion method of talus earth's surface foam slip casting of tunnel entrance |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160615 |