CN104179511A - Novel hole arrangement grouting method for enabling ground pre-grouting reinforcing roadway to penetrate through surrounding rocks at fault fracture zone - Google Patents

Novel hole arrangement grouting method for enabling ground pre-grouting reinforcing roadway to penetrate through surrounding rocks at fault fracture zone Download PDF

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Publication number
CN104179511A
CN104179511A CN201410400672.1A CN201410400672A CN104179511A CN 104179511 A CN104179511 A CN 104179511A CN 201410400672 A CN201410400672 A CN 201410400672A CN 104179511 A CN104179511 A CN 104179511A
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CN
China
Prior art keywords
grouting
roadway
slip casting
tunnel
hole
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CN201410400672.1A
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Chinese (zh)
Inventor
王传兵
江维中
王晓健
姚直书
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淮南矿业(集团)有限责任公司
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Priority to CN201410400672.1A priority Critical patent/CN104179511A/en
Publication of CN104179511A publication Critical patent/CN104179511A/en

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Abstract

The invention provides a novel hole arrangement grouting method for enabling a ground pre-grouting reinforcing roadway to penetrate through surrounding rocks at a fault fracture zone. The method comprises the following steps: (1), computing the hole pitch of drill holes according to the grout diffusion radius in the direction of the roadway; (2), drilling a vertical grouting straight hole which can extend to the initial positions of roadway roof grouting branch holes along the positions of the designed drill holes; (3), drilling the inverted Y-shaped grouting branch holes for grouting; (4), determining the grout proportion, performing reinforced grouting on rocks at the fault fracture zone. According to the invention, a directional branching technology is adopted, so that the grouting range is expanded; the ground pre-grouting can be implemented, so that the grouting pressure is high, and the grouting effect is excellent; the grout is adopted for reinforcing, so that the price is relatively cheap, and the integral strength of the reinforced rocks is high; the method has wide practicability and high simplicity in operation.

Description

Pre grouting from the surface reinforced roadway is through the Novel cloth hole grouting method of fault belt place country rock

Technical field

The present invention relates to ground and slurry injection technique field, construction of tunnel cloth hole, be specially a kind of pre grouting from the surface reinforced roadway through the Novel cloth hole grouting method of fault belt place country rock.

Background technology

Along with the continuous increase of China's coal-mine mining depth, mining conditions constantly worsens.In the tunnelling of producing at mine, run into sometimes fault belt etc.Owing to being subject to geological structure force effect, be positioned at the rock mass soft broken at fault belt place, intensity is extremely low, and with flowing water.When this position is passed in tunnelling, normally to press and present strongly, rock deformation is large, meet water softening, roadway support is extremely difficult, even if adopt high-strength support material, country rock is unstability repeatedly also, and supporting and protection structure has to repeatedly reprocess, and is having a strong impact on the normal safety in production of mine.

Summary of the invention

Technical problem solved by the invention is to provide the Novel cloth hole grouting method of a kind of pre grouting from the surface reinforced roadway through fault belt place country rock, to solve the problem in above-mentioned background technology.

As shown in Figure 1-2, pre grouting from the surface reinforced roadway is through the Novel cloth pore structure of fault belt place country rock, comprise: slip casting straight hole 1, slip casting branched hole 2, slip casting straight hole 1 is dug in fault belt 4,3 tops, slip casting region of slip casting straight hole 1 lower end branch out two slip casting branched holes 2, two slip casting branched hole 2 inner sides arrange tunnel, and slip casting branched hole 2 is arcuate structure.

Technical problem solved by the invention realizes by the following technical solutions: pre grouting from the surface reinforced roadway is through the Novel cloth hole grouting method of fault belt place country rock, comprise the following steps: (1) is along roadway direction, according to grout spreading range, calculate the pitch of holes of boring; (2) along design bore position, creep into vertical slip casting straight hole, until lane teeming slurry branched hole original position; (3) creep into " Y " type slip casting branched hole of slip casting; (4) determine grout coordinate ratio, implement fault belt rock mass reinforcing slip casting.

Described slip casting branched hole inner side is provided with tunnel, top, tunnel reinforcing scope 2-4H, below 1-3H; The left and right sides, tunnel grouting and reinforcing scope 2-4B.

Compare with public technology, there is following advantage in the present invention: (1) the present invention adopts oriented branch technology, strengthens range of grouting;

(2) the present invention adopts pre grouting from the surface, and grouting pressure is large, and slip casting effect is good;

(3) the present invention adopts cement paste to reinforce, and price is relatively cheap, and after reinforcing, rock mass bulk strength is high;

(4) the present invention has practicality and ease for operation widely.

Accompanying drawing explanation

Fig. 1 is that pre grouting from the surface of the present invention is crossed fault belt roadway rock reinforce plan view.

Fig. 2 is that the I-I of Fig. 1 is to sectional drawing.

In figure: B-span length, H-head-room, 1-slip casting straight hole, 2-slip casting branched hole, 3-slip casting region, 4-fault belt.

The specific embodiment

In order to make technological means of the present invention, creation characteristic, workflow, using method reach object and effect is easy to understand, below in conjunction with the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

Embodiment 1

Pre grouting from the surface reinforced roadway, through the Novel cloth hole grouting method of fault belt place country rock, comprises the following steps: (1), along roadway direction, according to grout spreading range, calculates the pitch of holes of boring; (2) along design bore position, creep into vertical slip casting straight hole, until lane teeming slurry branched hole original position; (3) creep into " Y " type slip casting branched hole of slip casting; (4) determine grout coordinate ratio, implement fault belt rock mass reinforcing slip casting.

Described slip casting branched hole inner side is provided with tunnel, top, tunnel reinforcing scope 3H, below 2H; The left and right sides, tunnel grouting and reinforcing scope 3B.

The present invention, before underworkings does not tunnel, will carry out grouting and reinforcing by pre grouting from the surface through Soft and Cracked Rocks in the fault belt at place to tunnel, not only can reduce fault belt place fractured rate of rock mass, isolated water burst passage; And can improve the mechanical characteristic of roadway surrounding rock, and increase the self-bearing capacity of country rock, meet engineering demand, guarantee tunnel safety construction and permanent use.

The present invention is applicable to the rock mass reinforcing in long, large tunnel in the Mineral Engineering deep tunnel of fault belt or construction of tunnel.The present invention simultaneously adopts pre-slurry injection technique, the applicable controlled slip casting of large pressure, and core boring sampling checking consolidation effect.And adopt Novel cloth hole grouting mode, and floor space reduces, and saves drilling effort, and overall slip casting effect of the present invention is good, and the underground construction that can apply in complicated the abnormal geological structure is reinforced.

More than show and described basic principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and manual, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Claimed scope of the present invention is defined by appending claims and equivalent thereof.

Claims (3)

1. pre grouting from the surface reinforced roadway, through the Novel cloth hole grouting method of fault belt place country rock, is characterized in that: comprise the following steps: (1), along roadway direction, according to grout spreading range, calculates the pitch of holes of boring; (2) along design bore position, creep into vertical slip casting straight hole, until lane teeming slurry branched hole original position; (3) creep into " Y " type slip casting branched hole of slip casting; (4) determine grout coordinate ratio, implement fault belt rock mass reinforcing slip casting.
2. pre grouting from the surface reinforced roadway according to claim 1, through the Novel cloth hole grouting method of fault belt place country rock, is characterized in that: described slip casting branched hole inner side is provided with tunnel, top, tunnel reinforcing scope 2-4H, below 1-3H; The left and right sides, tunnel grouting and reinforcing scope 2-4B.
3. pre grouting from the surface reinforced roadway according to claim 1, through the Novel cloth hole grouting method of fault belt place country rock, is characterized in that: described method is for the rock mass reinforcing in Mineral Engineering deep tunnel or long, the large tunnel of construction of tunnel of fault belt.
CN201410400672.1A 2014-08-13 2014-08-13 Novel hole arrangement grouting method for enabling ground pre-grouting reinforcing roadway to penetrate through surrounding rocks at fault fracture zone CN104179511A (en)

Priority Applications (1)

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CN201410400672.1A CN104179511A (en) 2014-08-13 2014-08-13 Novel hole arrangement grouting method for enabling ground pre-grouting reinforcing roadway to penetrate through surrounding rocks at fault fracture zone

Applications Claiming Priority (1)

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CN201410400672.1A CN104179511A (en) 2014-08-13 2014-08-13 Novel hole arrangement grouting method for enabling ground pre-grouting reinforcing roadway to penetrate through surrounding rocks at fault fracture zone

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105781597A (en) * 2014-12-16 2016-07-20 淮南矿业(集团)有限责任公司 Method for performing anchoring and grouting reinforcement inside deep well soft rock gob-side entry retaining
CN106014419A (en) * 2016-07-11 2016-10-12 唐山开滦建设(集团)有限责任公司 Multi-branch-pore ground pre-grouting and water plugging construction method
CN108798717A (en) * 2018-07-09 2018-11-13 山东省煤田地质局第四勘探队 A kind of borehole design method that tunnel vault wall rock grouting under urban road is reinforced
CN110159344A (en) * 2019-05-29 2019-08-23 翟卓凡 A kind of mine filling system and filling method thereof

Citations (7)

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SU881331A1 (en) * 1979-06-01 1981-11-15 Среднеазиатское Отделение Всесоюзного Ордена Ленина Проектно-Изыскательского И Научно-Исследовательского Института "Гидропроект" Method of constructing shallow-depth tunnel in unsolid rock
US5118220A (en) * 1988-06-15 1992-06-02 Kabushiki Kaisha Kematsu Seisakusho Method of building underground cavern and tunneling machine
CN201896623U (en) * 2010-12-02 2011-07-13 武汉大学 Pipe curtain device for penetration of deep lane of coal mine through fault and fracture zone
CN103821538A (en) * 2013-12-26 2014-05-28 安徽理工大学 Ground preliminary grouting method for J-shaped horizontal wing-shaped branch holes
CN103835648A (en) * 2013-11-06 2014-06-04 北京中煤矿山工程有限公司 Raise-boring technology for improving rock stratum performance through ground grouting
CN103835729A (en) * 2013-11-11 2014-06-04 北京中煤矿山工程有限公司 Ground pre-grouting strengthening technology for deep long-distance roadway surrounding rock
CN103867229A (en) * 2014-03-12 2014-06-18 河北煤炭科学研究院 Coal mine large-mining-depth and next-group coal exploitation water control comprehensive treatment method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU881331A1 (en) * 1979-06-01 1981-11-15 Среднеазиатское Отделение Всесоюзного Ордена Ленина Проектно-Изыскательского И Научно-Исследовательского Института "Гидропроект" Method of constructing shallow-depth tunnel in unsolid rock
US5118220A (en) * 1988-06-15 1992-06-02 Kabushiki Kaisha Kematsu Seisakusho Method of building underground cavern and tunneling machine
CN201896623U (en) * 2010-12-02 2011-07-13 武汉大学 Pipe curtain device for penetration of deep lane of coal mine through fault and fracture zone
CN103835648A (en) * 2013-11-06 2014-06-04 北京中煤矿山工程有限公司 Raise-boring technology for improving rock stratum performance through ground grouting
CN103835729A (en) * 2013-11-11 2014-06-04 北京中煤矿山工程有限公司 Ground pre-grouting strengthening technology for deep long-distance roadway surrounding rock
CN103821538A (en) * 2013-12-26 2014-05-28 安徽理工大学 Ground preliminary grouting method for J-shaped horizontal wing-shaped branch holes
CN103867229A (en) * 2014-03-12 2014-06-18 河北煤炭科学研究院 Coal mine large-mining-depth and next-group coal exploitation water control comprehensive treatment method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105781597A (en) * 2014-12-16 2016-07-20 淮南矿业(集团)有限责任公司 Method for performing anchoring and grouting reinforcement inside deep well soft rock gob-side entry retaining
CN106014419A (en) * 2016-07-11 2016-10-12 唐山开滦建设(集团)有限责任公司 Multi-branch-pore ground pre-grouting and water plugging construction method
CN108798717A (en) * 2018-07-09 2018-11-13 山东省煤田地质局第四勘探队 A kind of borehole design method that tunnel vault wall rock grouting under urban road is reinforced
CN110159344A (en) * 2019-05-29 2019-08-23 翟卓凡 A kind of mine filling system and filling method thereof

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Application publication date: 20141203