CN112253186A - Method for stopping leakage of working faces at different layer depths of railway tunnel shaft - Google Patents
Method for stopping leakage of working faces at different layer depths of railway tunnel shaft Download PDFInfo
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- CN112253186A CN112253186A CN202010728472.4A CN202010728472A CN112253186A CN 112253186 A CN112253186 A CN 112253186A CN 202010728472 A CN202010728472 A CN 202010728472A CN 112253186 A CN112253186 A CN 112253186A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000011435 rock Substances 0.000 claims abstract description 10
- 238000005553 drilling Methods 0.000 claims abstract description 8
- 230000002787 reinforcement Effects 0.000 claims abstract description 4
- 244000025254 Cannabis sativa Species 0.000 claims description 3
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 3
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 3
- 235000009120 camo Nutrition 0.000 claims description 3
- 235000005607 chanvre indien Nutrition 0.000 claims description 3
- 239000011487 hemp Substances 0.000 claims description 3
- 239000003673 groundwater Substances 0.000 claims description 2
- 241001610966 Crenella Species 0.000 claims 2
- 238000010276 construction Methods 0.000 abstract description 7
- 238000009435 building construction Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
-
- 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
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The method for plugging the working surfaces of different layer depths of the railway tunnel shaft effectively plugs underground water of different layer depths, provides a safe and waterless operation environment for the working surface of the shaft, and ensures the safety of shaft digging construction, comprising the following steps: drilling a vertically extending shallow grouting hole on a working surface of a vertical shaft, wherein the depth of the shallow grouting hole is greater than the height of a circulating digging and building section of the vertical shaft; secondly, shallow low-pressure grouting plugging is conducted, low-pressure grouting is conducted through each shallow grouting hole, and the complete plugging of water gushing on the working face of the vertical shaft is completed; drilling deep grouting holes on the working surface of the vertical shaft, wherein the deep grouting holes comprise outer ring deep inclined holes and inner ring deep vertical holes, and the depth of the deep grouting holes is more than twice that of the shallow grouting holes; and fourthly, deep high-pressure grouting plugging, wherein high-pressure grouting is carried out through deep inclined holes of the outer ring and deep vertical holes of the inner ring, and grouting reinforcement is carried out on rock mass in front of the working face of the vertical shaft and advanced plugging is carried out on deep underground water.
Description
Technical Field
The invention relates to a railway tunnel, in particular to a method for plugging working faces of different layer depths of a railway tunnel shaft.
Background
Railway engineering can emerge a large number of extra-long tunnels in western severe mountainous areas, and is controlled by the landforms of the mountainous areas, particularly for mountainous areas with difficult terrain crossing conditions, and deep and large vertical shafts with higher construction risks have to be adopted to solve the problems of ventilation, construction period, drainage, slag removal and the like in the construction of extra-long tunnels due to the fact that mountains are thick and surface ditches are not developed very much.
The underground water is used as a main cause of disasters such as shaft inrush flooding, shaft wall collapse and the like, is a problem which needs to be treated in the construction of a railway tunnel shaft, and particularly, the underground water at the working face of the shaft can cause disastrous results if the underground water is not treated properly due to the gathering of operators. At present, underground water treatment at the working face of a railway tunnel shaft in China mainly refers to advanced grouting water plugging with a large section height of the working face adopted by the coal mine industry, the treatment method can achieve a good effect on a slowly-inclined sedimentary rock stratum with obvious water-bearing layer and good rock fracture hydraulic connectivity, but the geological structure of western areas in China is very complex, railway tunnel shaft engineering mostly penetrates through the rock-slurry rock stratum, the water-bearing layer is unevenly distributed, the rock fracture is irregularly developed, the underground water hydraulic connectivity is poor, and conventional advanced grouting of the working face generates grouting blind areas for steeply-inclined irregular fracture water, so that potential safety hazards are left for subsequent shaft digging and building. Therefore, how to effectively plug underground water at the working face so as to expect that the working face of the vertical shaft is constructed in a safe and waterless state is a big problem for constructing the deep and large vertical shaft of the railway tunnel.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for plugging underground water of different depths of working faces of a vertical shaft of a railway tunnel, which can effectively plug the underground water of different depths of the working faces of the vertical shaft, provide a safe and waterless working environment for the working faces of the vertical shaft, ensure the safety of the driving and laying construction of the vertical shaft,
the technical scheme adopted by the invention for solving the technical problems is as follows:
the invention discloses a method for plugging working faces of different layer depths of a railway tunnel shaft, which comprises the following steps:
drilling a vertically extending shallow grouting hole on a working surface of a vertical shaft, wherein the depth of the shallow grouting hole is greater than the height of a circulating digging and building section of the vertical shaft;
secondly, shallow low-pressure grouting plugging is conducted, low-pressure grouting is conducted through each shallow grouting hole, and the complete plugging of water gushing on the working face of the vertical shaft is completed;
drilling deep grouting holes on the working surface of the vertical shaft, wherein the deep grouting holes comprise outer ring deep inclined holes and inner ring deep vertical holes, and the depth of the deep grouting holes is more than twice that of the shallow grouting holes;
and fourthly, deep high-pressure grouting plugging, wherein high-pressure grouting is carried out through deep inclined holes of the outer ring and deep vertical holes of the inner ring, and grouting reinforcement is carried out on rock mass in front of the working face of the vertical shaft and advanced plugging is carried out on deep underground water.
The invention has the advantages that the deep underground water plugging of different layers can be realized by combining shallow hole low-pressure grouting plugging and deep hole high-pressure grouting plugging according to the underground water exposure condition of the working surface of the vertical shaft, a safe and waterless working environment is provided for the working surface of the vertical shaft, the rock mass in front of the working surface is reinforced, the safety of the driving and building construction of the vertical shaft is ensured, and the invention has very obvious social and economic benefits and application values.
Drawings
The specification includes the following four figures:
FIG. 1 is a schematic view of the arrangement of the vertical faces of shallow grouting holes in the method for plugging the working faces at different depths of a railway tunnel shaft;
FIG. 2 is a schematic plan view of shallow grouting holes in the method for plugging a deep working face of different layers of a railway tunnel shaft;
FIG. 3 is a schematic diagram showing the vertical arrangement of deep grouting holes in the method for plugging the working face at different depths of the railway tunnel shaft;
fig. 4 is a schematic plan view of deep grouting holes in the method for plugging working faces at different depths of the railway tunnel shaft.
The figure shows the components, the part names and the corresponding marks: the vertical shaft comprises a vertical shaft 10, a shallow grouting hole 11, an outer ring deep inclined hole 12a, an inner ring deep vertical hole 12b and a vertical shaft working surface D.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 to 4, the method for stopping leakage of the working surface of the railway tunnel shaft at different layer depths comprises the following steps:
drilling a shallow grouting hole 11 extending vertically on a working surface D of a vertical shaft, wherein the depth of the shallow grouting hole 11 is greater than the height of a circulating excavation section of a vertical shaft 10;
secondly, shallow low-pressure grouting plugging is conducted, low-pressure grouting is conducted through each shallow grouting hole 11, and complete plugging of water gushing on the working surface D of the vertical shaft is completed;
drilling deep grouting holes on the working surface D of the vertical shaft, wherein the deep grouting holes comprise outer ring deep inclined holes 12a and inner ring deep vertical holes 12b, and the depth of the deep grouting holes is more than twice of that of the shallow grouting holes 11;
and fourthly, deep high-pressure grouting plugging, wherein high-pressure grouting is carried out through the outer ring deep inclined holes 12a and the inner ring deep vertical holes 12b, and grouting reinforcement is carried out on rock mass in front of the shaft working surface D and advanced plugging is carried out on deep groundwater.
According to the invention, the shallow hole low-pressure grouting plugging and the deep hole high-pressure grouting plugging are combined, so that the plugging of different layers of deep underground water is realized, a safe and waterless operation environment is provided for the working surface of the vertical shaft, the rock mass in front of the working surface is reinforced, and the safety of the driving and building construction of the vertical shaft is ensured.
Referring to fig. 1 and 2, the shallow grouting holes 11 are vertical holes, are arranged on the shaft working surface D at intervals in the radial direction and the circumferential direction, and are densely distributed near the water outlet point. The hole distribution quantity and the hole spacing are determined according to the water outlet condition of the working surface D of the vertical shaft, and the depth of the grouting hole is larger than the height of the circulating digging and building section of the vertical shaft 10.
Referring to fig. 3 and 4, the outer ring deep inclined holes 12a and the inner ring deep vertical holes 12b are radially and annularly arranged on the working surface D of the shaft at intervals, the holes are uniformly arranged in a quincunx shape, and the hole depth is more than twice of the depth of the shallow grouting holes 11, so that the safety of circular digging and building of the shaft is ensured. The outer ring deep inclined holes 12a are mainly used for plugging underground water around the vertical shaft 10 to form a water-resisting layer with a certain thickness, and the inner ring deep vertical holes 12b are used for plugging the underground water in front of the working surface D of the vertical shaft.
The orifices of the shallow grouting hole 11, the outer ring deep inclined hole 12a and the inner ring deep vertical hole 12b are all sealed by winding hemp threads on a horsetooth pipe, the horsetooth pipe is firmly fixed in a drilled hole, and the horsetooth pipe is wound with more hemp threads and tightened as much as possible so as to prevent the horsetooth pipe from being ejected by grouting pressure during grouting.
The foregoing is illustrative of the principles of the method for plugging a working surface at different depths in a railway tunnel shaft of the present invention and is not intended to limit the invention to the exact construction and applications shown and described, and accordingly, all modifications and equivalents that may be resorted to are intended to fall within the scope of the invention.
Claims (4)
1. The method for plugging the working surfaces of different layer depths of the railway tunnel shaft comprises the following steps:
firstly, drilling a shallow grouting hole (11) which extends vertically in a shaft working surface (D), wherein the depth of the shallow grouting hole (11) is greater than the height of a circulating digging and building section of a shaft (10);
shallow low-pressure grouting plugging is carried out, low-pressure grouting is carried out through each shallow grouting hole (11), and the complete plugging of water burst of a vertical shaft working surface (D) is completed;
drilling deep grouting holes in the working surface (D) of the vertical shaft, wherein the deep grouting holes comprise outer ring deep inclined holes (12a) and inner ring deep vertical holes (12b), and the depth of the deep grouting holes is more than twice of that of the shallow grouting holes (11);
and fourthly, deep high-pressure grouting plugging, wherein high-pressure grouting is carried out through the outer ring deep inclined holes (12a) and the inner ring deep vertical holes (12b), and grouting reinforcement is carried out on rock mass in front of the working surface (D) of the vertical shaft and advanced plugging is carried out on deep groundwater.
2. The method for plugging the working surface of the railway tunnel shaft at different depths of the layer as claimed in claim 1, which is characterized in that: the shallow grouting holes (11) are vertical holes with multiple circles, are arranged on the working surface (D) of the vertical shaft at intervals in the radial direction and the circumferential direction, and are densely distributed near the water outlet point.
3. The method for plugging the working surface of the railway tunnel shaft at different depths of the layer as claimed in claim 1, which is characterized in that: the outer ring deep inclined holes (12a) and the inner ring deep vertical holes (12b) are arranged on the vertical shaft working surface (D) at intervals in the radial direction and the circumferential direction, and all the holes are uniformly arranged in a quincunx shape.
4. The method for plugging the working surface of the railway tunnel shaft at different depths of the layer as claimed in claim 1, which is characterized in that: the orifices of the shallow grouting hole (11), the outer ring deep inclined hole (12a) and the inner ring deep vertical hole (12b) are all sealed by adopting a crenella tube twined with hemp threads, and the crenella tube is firmly fixed in a drilled hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010728472.4A CN112253186A (en) | 2020-07-26 | 2020-07-26 | Method for stopping leakage of working faces at different layer depths of railway tunnel shaft |
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| CN202010728472.4A CN112253186A (en) | 2020-07-26 | 2020-07-26 | Method for stopping leakage of working faces at different layer depths of railway tunnel shaft |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370252A (en) * | 2021-12-17 | 2022-04-19 | 核工业北京地质研究院 | Shallow hole reinforcing method suitable for high-temperature geothermal well |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864967A (en) * | 2010-06-13 | 2010-10-20 | 中国矿业大学 | Strengthening and reinforcing method of high-ground-pressure soft rock laneway by hierarchical grouting |
| CN103277120A (en) * | 2013-06-19 | 2013-09-04 | 西安科技大学 | Post-unfreezing water burst prevention method of non-full-depth freezing vertical shaft |
| CN103628894A (en) * | 2013-10-24 | 2014-03-12 | 重庆大学 | Water-rich fault fracture zone collapsed roadway repairing method based on angle-variable umbrella-shaped advancing grouting |
| CN103696775A (en) * | 2013-12-20 | 2014-04-02 | 中煤第一建设有限公司 | Large-stage-height multi-group water-containing layer segmented downward grouting method |
| CN105041345A (en) * | 2015-08-18 | 2015-11-11 | 山东大学 | Life-cycle treatment method of water inrush in tunnel |
| CN105927232A (en) * | 2016-05-19 | 2016-09-07 | 安徽理工大学 | Deep-blocking and shallow-grouting grouting method for no-blank area of mine and grouting safety protecting device |
| CN107083977A (en) * | 2017-06-23 | 2017-08-22 | 中国矿业大学 | A kind of grouting strengthening method of many granularities of argillaceous soft rock tunnel subregion |
| CN207177933U (en) * | 2016-11-23 | 2018-04-03 | 中国电建集团华东勘测设计研究院有限公司 | A kind of advanced plugging structure of high-pressure high-flow underground water |
| CN108661650A (en) * | 2018-04-23 | 2018-10-16 | 中铁隧道局集团有限公司 | A kind of rich water magmatic body area depth pozo shaft construction method |
| CN108756893A (en) * | 2018-04-19 | 2018-11-06 | 济南城建集团有限公司 | A kind of city shallow tunnel vault soil stabilization method |
| CN108868776A (en) * | 2018-07-06 | 2018-11-23 | 中钢集团马鞍山矿山研究院有限公司 | The high pressure-bearing broken rock of deep-well induces pre-pouring grout reinforcement means in advance |
| CN109162731A (en) * | 2018-08-16 | 2019-01-08 | 山东科技大学 | Iron producing area deep mining gushing water grouting treatment method |
| CN109209287A (en) * | 2018-09-12 | 2019-01-15 | 中国矿业大学 | A kind of shaft of vertical well crosses high inclination-angle tomography working face segmentation Curtain Grouting Construction method |
| CN109505628A (en) * | 2018-12-06 | 2019-03-22 | 中铁三局集团广东建设工程有限公司 | A kind of water-rich fault zone method for tunnel construction |
| CN109681214A (en) * | 2019-03-01 | 2019-04-26 | 中国水利水电第八工程局有限公司 | A kind of construction method of Full-face pouring strengthening stratum |
| US20190316454A1 (en) * | 2017-05-10 | 2019-10-17 | China University Of Mining And Technology | Stress-transfer method in tunnel with high ground pressure based on fracturing ring |
| CN110656951A (en) * | 2019-09-27 | 2020-01-07 | 中国科学院武汉岩土力学研究所 | Disaster safety control method for full-face tunnel boring machine excavation extrusion deformation card machine |
-
2020
- 2020-07-26 CN CN202010728472.4A patent/CN112253186A/en active Pending
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864967A (en) * | 2010-06-13 | 2010-10-20 | 中国矿业大学 | Strengthening and reinforcing method of high-ground-pressure soft rock laneway by hierarchical grouting |
| CN103277120A (en) * | 2013-06-19 | 2013-09-04 | 西安科技大学 | Post-unfreezing water burst prevention method of non-full-depth freezing vertical shaft |
| CN103628894A (en) * | 2013-10-24 | 2014-03-12 | 重庆大学 | Water-rich fault fracture zone collapsed roadway repairing method based on angle-variable umbrella-shaped advancing grouting |
| CN103696775A (en) * | 2013-12-20 | 2014-04-02 | 中煤第一建设有限公司 | Large-stage-height multi-group water-containing layer segmented downward grouting method |
| CN105041345A (en) * | 2015-08-18 | 2015-11-11 | 山东大学 | Life-cycle treatment method of water inrush in tunnel |
| CN105927232A (en) * | 2016-05-19 | 2016-09-07 | 安徽理工大学 | Deep-blocking and shallow-grouting grouting method for no-blank area of mine and grouting safety protecting device |
| CN207177933U (en) * | 2016-11-23 | 2018-04-03 | 中国电建集团华东勘测设计研究院有限公司 | A kind of advanced plugging structure of high-pressure high-flow underground water |
| US20190316454A1 (en) * | 2017-05-10 | 2019-10-17 | China University Of Mining And Technology | Stress-transfer method in tunnel with high ground pressure based on fracturing ring |
| CN107083977A (en) * | 2017-06-23 | 2017-08-22 | 中国矿业大学 | A kind of grouting strengthening method of many granularities of argillaceous soft rock tunnel subregion |
| CN108756893A (en) * | 2018-04-19 | 2018-11-06 | 济南城建集团有限公司 | A kind of city shallow tunnel vault soil stabilization method |
| CN108661650A (en) * | 2018-04-23 | 2018-10-16 | 中铁隧道局集团有限公司 | A kind of rich water magmatic body area depth pozo shaft construction method |
| CN108868776A (en) * | 2018-07-06 | 2018-11-23 | 中钢集团马鞍山矿山研究院有限公司 | The high pressure-bearing broken rock of deep-well induces pre-pouring grout reinforcement means in advance |
| CN109162731A (en) * | 2018-08-16 | 2019-01-08 | 山东科技大学 | Iron producing area deep mining gushing water grouting treatment method |
| CN109209287A (en) * | 2018-09-12 | 2019-01-15 | 中国矿业大学 | A kind of shaft of vertical well crosses high inclination-angle tomography working face segmentation Curtain Grouting Construction method |
| CN109505628A (en) * | 2018-12-06 | 2019-03-22 | 中铁三局集团广东建设工程有限公司 | A kind of water-rich fault zone method for tunnel construction |
| CN109681214A (en) * | 2019-03-01 | 2019-04-26 | 中国水利水电第八工程局有限公司 | A kind of construction method of Full-face pouring strengthening stratum |
| CN110656951A (en) * | 2019-09-27 | 2020-01-07 | 中国科学院武汉岩土力学研究所 | Disaster safety control method for full-face tunnel boring machine excavation extrusion deformation card machine |
Non-Patent Citations (13)
| Title |
|---|
| 刘家军，等: ""隧道工程中涌水现象的综合治理技术"", 《建筑施工》 * |
| 史勇，等: ""壁后注浆快速堵水技术在麻家梁矿主立井的应用"", 《同煤科技》 * |
| 孙勇，姜玉松: ""利用注浆法加固斜井表土段地层"", 《矿山建设工程新进展——2006全国矿山建设学术会议文集（下册）》 * |
| 惠冰，等: ""高孔隙率砂岩涌水渗流场特征与注浆治理"", 《煤炭学报》 * |
| 曹栩: ""孔庄矿深井水泵房硐室围岩结构稳定性分析及控制技术"", 《中国优秀硕士论文全文库工程科技I辑》 * |
| 李志强: ""软弱砂质泥岩修建竖井的处理方法及应用"", 《中国高新技术企业》 * |
| 杨木桂，等: ""冻结法在地铁隧道施工中的应用"", 《广州建筑》 * |
| 栗军昌: ""斜井井筒破坏原因分析与加固实践"", 《 第十届全国采矿学术会议论文集——专题一：采矿与井巷工程》 * |
| 王晓健: ""煤矿深立井马头门围岩历时稳定性及其控制技术"", 《中国优秀博士论文全文库工程科技I辑》 * |
| 王档良，姜振泉: ""在建矿井井壁渗漏水的地质成因分析与化学注浆治理"", 《建井技术》 * |
| 邓凡阔，陈洁: ""深竖井高压涌水治理技术"", 《东北水利水电》 * |
| 邓新: ""铁路隧道超深竖井工作面预注浆堵水关键技术"", 《城市建设理论研究(电子版)》 * |
| 马银，等: ""思山岭铁矿深井工作面预注浆技术"", 《现代矿业》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114370252A (en) * | 2021-12-17 | 2022-04-19 | 核工业北京地质研究院 | Shallow hole reinforcing method suitable for high-temperature geothermal well |
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