CN111878092A - Karst cave section full-filling ventilation method based on karst cave underground river environment tunnel construction - Google Patents
Karst cave section full-filling ventilation method based on karst cave underground river environment tunnel construction Download PDFInfo
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- CN111878092A CN111878092A CN202010753973.8A CN202010753973A CN111878092A CN 111878092 A CN111878092 A CN 111878092A CN 202010753973 A CN202010753973 A CN 202010753973A CN 111878092 A CN111878092 A CN 111878092A
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- 238000009423 ventilation Methods 0.000 title claims abstract description 38
- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 8
- 230000002265 prevention Effects 0.000 abstract 1
- 238000004062 sedimentation Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/18—Making embankments, e.g. dikes, dams
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/003—Ventilation of traffic tunnels
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Geology (AREA)
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- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
A karst cave section full-filling ventilation method based on karst cave underground river environment tunnel construction comprises the following steps: s1: excavating the tunnel A section to a communicated karst cave; s2: the underground river is diverted so that the underground river does not flow through the karst cave; s3: backfilling the karst cave until the karst cave is backfilled to the foundation surface of the tunnel; s4: protecting the cave wall of the karst cave, and uniformly applying a plurality of anchor cables on the cave wall; s5: filling the karst cave and connecting the anchor cable with the filled backfill body; s6: 2 axial flow fans are arranged at an inlet of the section A of the tunnel, and one or two of the axial flow fans are started to perform press-in ventilation; s7: 2 axial flow fans are arranged outside the opening of the horizontal pilot tunnel, and one or two of the axial flow fans are started to perform press-in ventilation; s8: 2 axial flow fans are arranged in the transverse hole, and one or two axial flow fans are started to perform press-in ventilation. Has the advantages of stability, reliability, high safety, sedimentation prevention and good ventilation effect.
Description
Technical Field
The invention mainly relates to a tunnel construction technology of a karst cave underground river environment, in particular to a karst cave section full filling ventilation method based on the tunnel construction of the karst cave underground river environment.
Background
The Yujing mountain tunnel is located in Wexin county of Yunnan province, has the total length of 6306m and is a double-line tunnel. In 2016, 7, 23 days, a cave is detected by drilling a hole in advance on the small-mileage end face of a cross-cave working area, and a huge cave hall and a river are discovered after the cave is revealed. The karst cave is about 230m in transverse length and about 93m in width and is approximately rectangular, the top of the karst cave is in a vault shape, the vertical heights of halls are different from 50 m to 130m, the right side of the karst cave in the line direction is high, and the left side of the karst cave is low; and a river develops at the slope toe at the left side of the karst cave, and the river surface is 5-15 m wide. The tunnel passes through the huge karst cave hall, the two sides of the huge karst cave hall are provided with a tunnel section A, and the tunnel passes through the karst cave hall and is provided with a tunnel section B.
Because the tunnel needs to pass through a huge karst cave hall and the bottom is provided with a river, high risks are brought to early construction and later operation, such as block falling at the top of the karst cave, sinking at the bottom due to the river and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a karst cave section full-filling ventilation method which is stable, reliable, high in safety, capable of preventing settlement and good in ventilation effect and is based on the construction of a tunnel in the karst cave and the underground river environment.
In order to solve the technical problems, the invention adopts the following technical scheme:
a karst cave section full filling ventilation method based on construction of a karst cave underground river environment tunnel is characterized in that the environment comprises a karst cave and an underground river positioned at the bottom of the karst cave, the tunnel penetrates through the karst cave, the tunnels at two ends of the karst cave are tunnel A sections, and the tunnel penetrating through the karst cave is tunnel B section; the construction method comprises the following steps:
s1: excavating the tunnel A section to a communicated karst cave;
s2: the underground river is diverted so that the underground river does not flow through the karst cave;
s3: backfilling the karst cave until the karst cave is backfilled to the foundation surface of the tunnel;
s4: protecting the cave wall of the karst cave, and uniformly applying a plurality of anchor cables on the cave wall;
s5: filling the karst cave and connecting the anchor cable with the filled backfill body;
s6: 2 axial flow fans are arranged at an inlet of the section A of the tunnel, and one or two of the axial flow fans are started to perform press-in ventilation;
s7: 2 axial flow fans are arranged outside the opening of the horizontal pilot tunnel, and one or two of the axial flow fans are started to perform press-in ventilation;
s8: 2 axial flow fans are arranged in the transverse hole, and one or two axial flow fans are started to perform press-in ventilation.
As a further improvement of the above technical solution:
in step S1, the lining construction is performed while performing support while excavating.
In step S2, a drainage tunnel is formed in communication with the river upstream so that the river does not flow through the cavern.
And plugging and backfilling the underground river at the downstream of the junction of the drainage tunnel and the underground river.
In step S4, steel fibers are applied to the cave wall and concrete is sprayed.
In step S5, grouting is performed in the gap between the backfill body and the cavern wall to seal the gap.
In step S7, the axial flow fan is spaced 25m to 30m from the horizontal guide tunnel opening.
In step S8, an axial flow fan is placed at the intersection of the crosshole and the tunnel a section.
Compared with the prior art, the invention has the advantages that:
the invention relates to a karst cave section full filling ventilation method based on karst cave underground river environment tunnel construction, wherein in the method, a underground river is diverted so that the underground river does not flow through a karst cave, and the influence of a water area on the bottom of the karst cave is eliminated; backfilling the karst cave until the karst cave is filled with the materials, namely performing reconstruction treatment on the karst cave to prevent blocks from falling from the top of the karst cave; the backfill body is connected with the cave wall of the karst cave by using the anchor cable, and then the diversion of the underground river is matched, so that the backfill body can be prevented from settling, and the stability and the reliability of the section B of the tunnel are improved; all set up an axial fan outside tunnel A section import, flat pilot tunnel entrance to a cave and in the cross tunnel, adopt the forced ventilation, guaranteed the ventilation effect of backfill body excavation and the ventilation effect of later stage circuit operation.
Drawings
Fig. 1 is a plan view of the cave-underground river environment of the present invention.
Fig. 2 is a plan view of the cave river environment of the present invention (with a spillway tunnel).
The reference numerals in the figures denote:
1. karst cave; 2. a river under the river; 3. a water drainage hole.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
As shown in fig. 1 and fig. 2, an embodiment of the karst cave section full-filling ventilation method based on the karst cave underground river environment tunnel construction of the invention, the environment includes a karst cave 1 and an underground river 2 located at the bottom of the karst cave 1, the tunnel passes through the karst cave 1, the tunnels at two ends of the karst cave 1 are tunnel a sections, and the tunnel passing through the karst cave 1 is tunnel B sections; the construction method comprises the following steps:
s1: excavating a tunnel section A to a communicating karst cave 1;
s2: the underground river 2 is diverted, so that the underground river 2 does not flow through the karst cave 1;
s3: backfilling the karst cave 1 until the karst cave is backfilled to the foundation surface of the tunnel;
s4: protecting the cave wall of the karst cave 1, and uniformly applying a plurality of anchor cables on the cave wall;
s5: filling the karst cave 1, and connecting the anchor cable with the filled backfill body;
s6: 2 axial flow fans are arranged at an inlet of the section A of the tunnel, and one or two of the axial flow fans are started to perform press-in ventilation;
s7: 2 axial flow fans are arranged outside the opening of the horizontal pilot tunnel, and one or two of the axial flow fans are started to perform press-in ventilation;
s8: 2 axial flow fans are arranged in the transverse hole, and one or two axial flow fans are started to perform press-in ventilation.
In the method, the underground river 2 is diverted so that the underground river 2 does not flow through the karst cave 1, and the influence of a water area on the bottom of the karst cave 1 is eliminated; the karst cave 1 is backfilled until the karst cave is filled, namely the karst cave 1 is subjected to reconstruction treatment, so that the top of the karst cave 1 is prevented from dropping blocks, and the safety is improved; the backfill body is connected with the cave wall of the karst cave 1 by using the anchor cable, and then the diversion of the underground river 2 is matched, so that the backfill body can be prevented from settling, and the stability and reliability of the section B of the tunnel are improved; all set up 2 axial fans outside tunnel A entry, flat pilot tunnel entrance to a cave and in the cross tunnel, adopt the forced ventilation, guaranteed the ventilation effect of backfill body excavation and the ventilation effect of later stage circuit operation.
In this embodiment, in step S1, lining construction is performed while performing support while excavating. By adopting the mode, the stability and the reliability of the excavated cavern can be ensured.
In this embodiment, in step S2, a drainage tunnel 3 communicating with the upstream of the underground river 2 is implemented so that the underground river 2 does not flow through the cavern 1. The water at the upstream of the underground river 2 is diverted by the drainage tunnel 3 and flows out from the area outside the karst cave 1, so that the subsequent backfill body can be prevented from generating settlement.
In this embodiment, the underground river 2 downstream of the junction of the drainage tunnel 3 and the underground river 2 is blocked and backfilled. Therefore, the phenomenon of water immersion can be prevented, and the subsequent backfilling construction is facilitated.
In this embodiment, in step S4, steel fibers are applied to the cavity wall of the cavern 1, and concrete is sprayed. The arrangement is convenient for the implementation of the anchor cable, and simultaneously, the block falling at the top of the karst cave 1 can be prevented.
In this embodiment, in step S5, grouting is performed in the gap between the backfill body and the cave wall of the cavern 1 to seal the gap. The stability and the reliability of the backfill body are further improved.
In this embodiment, in step S7, the axial flow fan is located 25m to 30m away from the horizontal guide tunnel opening. The specific length is 30m, and the air pipe is used for entering the flat pilot tunnel, so that the operation is convenient, and the ventilation effect is good.
In this embodiment, in step S8, the axial flow fan is placed at the intersection of the horizontal hole and the tunnel a section. The operation is convenient, and the ventilation effect is good.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (8)
1. A karst cave section full filling ventilation method based on karst cave underground river environment tunnel construction is characterized in that an environment comprises a karst cave (1) and an underground river (2) located at the bottom of the karst cave (1), the tunnel penetrates through the karst cave (1), tunnels at two ends of the karst cave (1) are a tunnel A section, and a tunnel penetrating through the karst cave (1) is a tunnel B section; the construction method comprises the following steps:
s1: excavating a tunnel section A to a communicating karst cave (1);
s2: the underground river (2) is diverted, so that the underground river (2) does not flow through the karst cave (1);
s3: backfilling the karst cave (1) until the karst cave is backfilled to the tunnel foundation surface;
s4: protecting the cave wall of the karst cave (1), and uniformly applying a plurality of anchor cables on the cave wall;
s5: filling the karst cave (1) and connecting the anchor cable with the filled backfill body;
s6: 2 axial flow fans are arranged at an inlet of the section A of the tunnel, and one or two of the axial flow fans are started to perform press-in ventilation;
s7: 2 axial flow fans are arranged outside the opening of the horizontal pilot tunnel, and one or two of the axial flow fans are started to perform press-in ventilation;
s8: 2 axial flow fans are arranged in the transverse hole, and one or two axial flow fans are started to perform press-in ventilation.
2. The karst cave section full-filling ventilation method based on karst cave underground river environment tunnel construction according to claim 1, characterized in that: in step S1, the lining construction is performed while performing support while excavating.
3. The karst cave section full-filling ventilation method based on karst cave underground river environment tunnel construction according to claim 2, characterized in that: in step S2, a drainage tunnel (3) communicating with the upstream of the underground river (2) is constructed so that the underground river (2) does not flow through the cavern (1).
4. The karst cave section full-filling ventilation method based on karst cave underground river environment tunnel construction according to claim 3, characterized in that: and plugging and backfilling the underground river (2) at the downstream of the junction of the drainage tunnel (3) and the underground river (2).
5. The karst cave section full-filling ventilation method based on karst cave underground river environment tunnel construction according to claim 4, characterized in that: in step S4, steel fibers are applied to the cavity wall of the cave (1), and concrete is sprayed.
6. The karst cave section full-filling ventilation method based on karst cave underground river environment tunnel construction according to claim 5, characterized in that: in step S5, grouting is performed in the gap between the backfill body and the cavity wall of the cavern (1) to seal the gap.
7. The karst cave section full-filling ventilation method based on karst cave underground river environment tunnel construction according to claim 6, characterized in that: in step S7, the axial flow fan is spaced 25m to 30m from the horizontal guide tunnel opening.
8. The karst cave section full-filling ventilation method based on karst cave underground river environment tunnel construction according to claim 6, characterized in that: in step S8, an axial flow fan is placed at the intersection of the crosshole and the tunnel a section.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010753973.8A CN111878092A (en) | 2020-07-30 | 2020-07-30 | Karst cave section full-filling ventilation method based on karst cave underground river environment tunnel construction |
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| CN202010753973.8A CN111878092A (en) | 2020-07-30 | 2020-07-30 | Karst cave section full-filling ventilation method based on karst cave underground river environment tunnel construction |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383806A (en) * | 2011-07-18 | 2012-03-21 | 广东华盟路桥工程有限公司 | Construction technology for allowing tunnel to pass through ultra-large karst cave |
| CN103470267A (en) * | 2013-09-28 | 2013-12-25 | 中铁二十局集团第二工程有限公司 | Long tunnel fast construction process |
| CN106988758A (en) * | 2017-05-08 | 2017-07-28 | 中铁五局集团第五工程有限责任公司 | One kind is used to pass through large-scale vertical solution cavity group method for tunnel construction |
| CN111396089A (en) * | 2020-04-21 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Open-cut tunnel lining structure passing through giant karst cave and construction method thereof |
| CN111411993A (en) * | 2020-04-21 | 2020-07-14 | 中铁二院工程集团有限责任公司 | Large-section tunnel supporting system penetrating through huge karst cave hall and construction method |
-
2020
- 2020-07-30 CN CN202010753973.8A patent/CN111878092A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102383806A (en) * | 2011-07-18 | 2012-03-21 | 广东华盟路桥工程有限公司 | Construction technology for allowing tunnel to pass through ultra-large karst cave |
| CN103470267A (en) * | 2013-09-28 | 2013-12-25 | 中铁二十局集团第二工程有限公司 | Long tunnel fast construction process |
| CN106988758A (en) * | 2017-05-08 | 2017-07-28 | 中铁五局集团第五工程有限责任公司 | One kind is used to pass through large-scale vertical solution cavity group method for tunnel construction |
| CN111396089A (en) * | 2020-04-21 | 2020-07-10 | 中铁二院工程集团有限责任公司 | Open-cut tunnel lining structure passing through giant karst cave and construction method thereof |
| CN111411993A (en) * | 2020-04-21 | 2020-07-14 | 中铁二院工程集团有限责任公司 | Large-section tunnel supporting system penetrating through huge karst cave hall and construction method |
Non-Patent Citations (2)
| Title |
|---|
| 张广泽等: "高速铁路隧道岩溶灾害及防治关键技术研究", 《铁道标准设计》 * |
| 张祥等: "隧道穿越巨型溶洞弃碴回填体注浆加固技术研究", 《现代隧道技术》 * |
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Application publication date: 20201103 |