CN101699030A - Big underground chamber tunneling method - Google Patents

Big underground chamber tunneling method Download PDF

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Publication number
CN101699030A
CN101699030A CN200910237883A CN200910237883A CN101699030A CN 101699030 A CN101699030 A CN 101699030A CN 200910237883 A CN200910237883 A CN 200910237883A CN 200910237883 A CN200910237883 A CN 200910237883A CN 101699030 A CN101699030 A CN 101699030A
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CN
China
Prior art keywords
chamber
tunneling
construction
brushing
supporting
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CN200910237883A
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Chinese (zh)
Inventor
刘东申
李振峰
刘国栋
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中冶集团华冶资源开发有限责任公司
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Priority to CN200910237883A priority Critical patent/CN101699030A/en
Publication of CN101699030A publication Critical patent/CN101699030A/en

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Abstract

The invention relates to a big underground chamber tunneling method, comprising the following steps: 101.cross section is tunneled from the floor at one side along the setting slope until being tunneled to the top plate of the underground chamber; 102.top brushing at two sides is carried out after tunneling is carried out to the top plate, and the top part of a ramp road is knocked through at the same time; 104. after the cross sections are painted, the presetting length of the underground chamber is brushed by gradually brushing the cross sections from the top part along the reverse direction of the underground chamber; 105.after the vault is brushed, the top part of the underground chamber is supported; 106. after supporting is carried out, brushing is carried out from top to bottom in a step way, brushing is carried out while supporting is carried out in the construction, thereby finally achieving the scheduled design effect; in the method, as small cross section tunneling is adopted until to the top plate of the underground chamber, and then step construction method is carried out, so as to be capable of improving the construction condition remarkably.

Description

A kind of big underground chamber tunneling method

Technical field

The present invention relates to a kind of big underground chamber tunneling method, belong to down-hole, mine construction field.

Background technology

At present in operation fields such as down-hole, mine; big chamber has obtained more and more for using widely; because big chamber major part is all constructed underground; usually complex geological condition can be in, factor affecting such as factors such as the geology state of natural formation such as geostatic stress, geology physical parameter, underground water, geological fault and hand excavation's operation can be subjected to.

In addition, the general section of big chamber of mine is bigger, and the length that has is less; and its length of service requires longer, therefore, and in the big chamber tunneling construction; usually can run into various difficulties, and, different chamber tunneling construction methods be arranged also according to the characteristics of different chambers.

Up to the present, the excavation mode of big chamber traditionally, majority adopts the full face excavation method to construct, full section construction method, its principle is: according to jewel hole of excavated section of chamber, blasting in groups, and utilize the spoil heap as stamping the borehole of face and the workbench of vault square and skyhook, then tunnel then and deslagging, finally reach predetermined design, it is applicable to that mainly rock is hard, the joint fissure agensis, in the rock mass stability of good integrity, in addition, full face tunneling method excavation space is big, helps improving the mechanization of building operation degree, and operating location is concentrated, execution control is convenient, has therefore obtained application more and more widely.

But meanwhile; this method comprises following shortcoming, and is at first dangerous in safety, and the constructor needs frequent cat ladder to carry out operations such as explosion; and smoke evacuation is also relatively more difficult after the explosion; simultaneously, its deslagging can adopt artificial deslagging usually, therefore; these factors; all brought certain influence to Chamber Construction, in addition, this method to the conditional request of rock mass than higher.

Therefore, need a kind of novel big underground chamber tunneling method, so that can overcome frequent cat ladder of above-mentioned constructor, the demanding shortcoming of execution conditions, by long-term construction and constantly summing up experience, explore a kind of new method of big chamber driving, new job practices has at first solved constructor up and down drop shaft cat ladder difficulty and uneasy congruent problem than traditional job practices on safety, the construction speed aspect has also solved the difficulty of manually skimming, waited problem slowly.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of novel big underground chamber tunneling method, solved smoke evacuation difficulty and constructor drop shaft cat ladder difficulty and dangerous up and down, this method has also solved the difficulty of manually skimming, has waited problem slowly in addition, and its technical scheme is specially:

A kind of big underground chamber tunneling method comprises the following step:

101, carry out the section driving from a side floor along the gradient of setting, until arriving the chamber top board;

102, behind top board, begin the brushing at two sides top, and simultaneously the top of ramp is got through;

103,,, the Arc shape brush at chamber top is become according to the profile of chamber top section along the parallel direction of chamber;

104, after above-mentioned section is brushed, in the other direction brush predetermined length by row by the chamber section to chamber along the top according to chamber;

105, after the chamber vault has been brushed, supporting is carried out at the chamber top;

106, after supporting is finished, carry out brushing according to the mode from top to down of step, and the supporting while brushing when construction, and finally reach predetermined design effect.

Because this method, what take is that the slope light section tunneled before this, after tunneling the chamber top board, the method of step construction again, because when light section excavates, it is the slope driving that adopts, therefore, when explosion, the Drilling borehole can be by means of aids such as ladders, and is because that light section is dug scale is less, can the supporting position less, perhaps select not supporting at the condition of rock mass, in addition, the slag stone after the explosion can adopt scraper to cooperate the slusher machine to slag tap, and then has solved the slow shortcoming of manually skimming when full section is constructed, adding the constructor also need not be by means of drop shaft about the ladder, solved safety issue,, can obtain comparatively significantly technique effect with respect to traditional construction driving method.

As a kind of improvement of the present invention, in above-mentioned steps 101, the described gradient is the gradient from chamber floor starting point to the chamber top board, and described specifications section is 2.5m*3m.

As a further improvement on the present invention, in above-mentioned steps 102, when expanding the brush top, stay the thickness of 300mm~500mm, backbreak to prevent section.

As another kind of improvement the of the present invention, in above-mentioned steps 106, the height of described step is 2m~2.5m.

This kind method obtains tangible duration benefit in the construction of large stable chamber such as broken chamber, speed of application is very fast, and specification quality is controlled easily, has guaranteed the safety of construction, helps the enforcement of support technology and constructor's operation again.

Description of drawings

Fig. 1 is the flow chart of the specific embodiment of this invention;

The specific embodiment

Be described in detail below in conjunction with the concrete construction sequence of the drawings and specific embodiments this invention.

Fig. 1 is the flow chart of the specific embodiment of this invention, in a large amount of underground construction practices, it is widely acknowledged, tunnel and underground excavation engineering, its key problem is all summed up on excavation and two critical processes of supporting, promptly how to excavate, could more help the stable of cavern and be convenient to supporting: if when needing supporting, how about supporting could guarantee more effectively that the cavern is stable and be convenient to excavation.

Two above-mentioned factors have determined in the chamber tunneling construction, need take corresponding job practices at the characteristics of chamber, in an embodiment, described big chamber, its span greatly, highly higher, and poor stability, if adopt the disposable excavation of full section, both be unfavorable for the safety of constructing being unfavorable for the supporting of chamber again, therefore, therefore, must seek a kind of comparatively effectively underground chamber tunneling method.

Among the present invention, employing be at first to go over along certain gradient segment face, until the chamber top, and then driving is to the job practices of the cross section place of setting, its concrete construction sequence is as follows:

101, carry out the section driving from a side floor along the gradient of setting, until arriving the chamber top board, promptly when big chamber is arrived in engineering construction, at first, engineers and technicians are according to the drawing of construction, when calculating this big chamber driving in advance, the gradient that section moves ahead, this gradient is domatic as a kind of inclination, can guarantee the constructor without ladder as aid, just can carry out blast working.

As a kind of preferred embodiment, the described gradient is according to carrying out from chamber floor starting point to the gradient of chamber top board.

Then, position according to center line, along the gradient of setting according to certain section size, begin driving forward, in this process, can adopt the limit to prop up the job practices of safe edge driving, i.e. excavated section at first progressively upwards enlarges and adopts support material to carry out supporting thereupon, support material can be selected with general support materials such as reinforcing bar and anchor poles, because what this kind method was taked is the light section driving, therefore, during driving, the rock of its excavation is less, in addition, and its driving is that a side at chamber enters, and certain gradient is arranged, can the convenient construction personnel construct, simultaneously, the slag stone after the explosion can adopt scraper to cooperate the slusher machine to slag tap, and can reduce the use of manpower.

The specification of excavated section need be controlled at certain size, in this embodiment, the specifications section of this section can be controlled at about 2.5m*3m, and such design can satisfy the constructor and carry out construction operation therein, and construction volume deslagging material is fewer.

In addition, in order to help driving, take the mode of explosion to assist driving among this embodiment, the explosive of taking, can adopt the nitrolite that power is lower, price is more honest and cleaner, perhaps adopt nitroglycerine, accurate and smooth for guaranteeing the excavation facial contour, and control can adopt smooth blasting to carry out explosion on blasting technique to the vibrations of country rock, can reach expected result, stone after the avalanche, electricity consumption rake cooperate the slusher machine to transport to the outside, according to top method of operating, constantly carry out above-mentioned driving, until arriving the chamber top board.

In addition, can be chosen in the process of above-mentioned driving, in the end outwards not slag tap a big gun time, utilize this slag masonry to bombard the operating platform of eye for next.

102, behind top board, begin the brushing at two sides top, and simultaneously the top of ramp is got through;

103,,, the Arc shape brush at chamber top is become according to the profile of chamber top section along the parallel direction of chamber;

Above-mentioned steps mainly is that the profile with chamber completes, and, in step 2, in the preferred embodiment, when expanding the brush top, stay the thickness of 300mm~500mm, backbreak to prevent section, and, after big section can be turned round hammer drill, carry out following step again.

104, after above-mentioned section is brushed, in the other direction brush predetermined length by row by the chamber section to chamber along the top according to chamber.

In this step, in the time of the brush top, need design end face in strict accordance with chamber and handle, and in time examine the sled float stone, finish by design and construction and carry out next construction link again.

105, after the chamber vault has been brushed, supporting is carried out at the chamber top;

Because the arch top of chamber, supporting the weight of rock stratum, therefore, need in time carry out supporting, prevent that its top arcuate from can't bear whole weight.

106, after supporting is finished, carry out brushing according to the mode from top to down of step, and the supporting while brushing when construction, and finally reach predetermined design effect.

In this step, among the embodiment, can take step work plane construction method, be about to chamber and be divided into two or more layerings up and down, the higher slice work plane is ahead of the lower leaf certain distance all the time, forms the step work plane and constructs simultaneously.

Because this kind job practices is taked to carry out brushing from top to bottom according to step, therefore the height of step can be selected different height according to the wall height of chamber, in this embodiment, the height of taking step is 2m~2.5m, be convenient to manually-operated like this, and in work progress, still adopt supporting, when brushing, control specifications section simultaneously, so that create conditions for follow-up supporting while brushing.

According to above step cycle, whole chamber all brush finish, owing to taked technique scheme, this kind method is in the construction of large stable chamber such as broken chamber, obtain tangible duration benefit, speed of application is very fast, and specification quality is controlled easily, guarantee the safety of construction, helped the enforcement of support technology and constructor's operation again.

It should be noted that though present invention is described by means of embodiment, of the present invention being not limited thereto, the distortion of every this embodiment and assembly thereof all drops within protection scope of the present invention.

Under above-mentioned instruction of the present invention; those skilled in the art can carry out various improvement and distortion on the basis of the foregoing description; and these improvement and distortion; all drop in protection scope of the present invention; those skilled in the art should be understood that; above-mentioned specific descriptions are just better explained purpose of the present invention, and protection scope of the present invention is limited by claim and equivalent thereof.

Claims (5)

1. a big underground chamber tunneling method is characterized in that, comprises the following step:
101, carry out the section driving from a side floor along the gradient of setting, until arriving the chamber top board;
102, behind top board, begin the brushing at two sides top, and simultaneously the top of ramp is got through;
103,,, the Arc shape brush at chamber top is become according to the profile of chamber top section along the parallel direction of chamber;
104, after above-mentioned section is brushed, in the other direction brush predetermined length by row by the chamber section to chamber along the top according to chamber;
105, after the chamber vault has been brushed, supporting is carried out at the chamber top;
106, after supporting is finished, carry out brushing according to the mode from top to down of step, and the supporting while brushing when construction, and finally reach predetermined design effect.
2. big underground chamber tunneling method as claimed in claim 1 is characterized in that,
In step 101, the described gradient is the gradient from chamber floor starting point to the chamber top board.
3. underground chamber tunneling method as claimed in claim 1 is characterized in that,
In step 101, described specifications section is 2.5m*3m.
4. underground chamber tunneling method as claimed in claim 1 is characterized in that,
In step 102, during the brush top, stay the thickness of 300mm~500mm.
5. Chamber Construction method as claimed in claim 1 is characterized in that,
In step 106, the height of described step is 2m~2.5m.
CN200910237883A 2009-11-20 2009-11-20 Big underground chamber tunneling method CN101699030A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102619524A (en) * 2012-03-16 2012-08-01 安徽恒源煤电股份有限公司钱营孜煤矿 Construction method for opening off small-section underground chamber of coal mine rock roadway into large-section underground chamber
CN104747195A (en) * 2015-01-21 2015-07-01 安徽金日盛矿业有限责任公司 Ore pass enlargement construction method
CN105041323A (en) * 2014-12-31 2015-11-11 龙口矿业集团有限公司 Three-incompetent bed cutting hole large section construction and supporting method
CN105937395A (en) * 2015-09-14 2016-09-14 安徽建筑大学 Fast and highly-efficient tunneling method for large section of hard-rock tunnel in coal mine by combination of fully-mechanized tunneling and blasting driving
CN106089236A (en) * 2016-07-28 2016-11-09 北京昊华能源股份有限公司 A kind of district cross-cut coal seam notch overall structure and driving method
CN106121689A (en) * 2016-08-22 2016-11-16 福州大学 A kind of excavation method of non-coal mine underground large stable chamber
CN106285731A (en) * 2016-08-05 2017-01-04 湖南科技大学 The little courtyard radiant type of a kind of high Large chamber and the mixed construction method of step
CN108894804A (en) * 2018-08-14 2018-11-27 河北钢铁集团矿业有限公司 A kind of pick block construction in layer method of high Large chamber
CN109372519A (en) * 2018-10-10 2019-02-22 内蒙古伊泰煤炭股份有限公司 A kind of tunnel hexagonal cross-section tunneling construction method
CN109488347A (en) * 2018-10-25 2019-03-19 浙江省隧道工程公司 A kind of excavation construction method for special formation chamber

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102619524A (en) * 2012-03-16 2012-08-01 安徽恒源煤电股份有限公司钱营孜煤矿 Construction method for opening off small-section underground chamber of coal mine rock roadway into large-section underground chamber
CN105041323A (en) * 2014-12-31 2015-11-11 龙口矿业集团有限公司 Three-incompetent bed cutting hole large section construction and supporting method
CN104747195A (en) * 2015-01-21 2015-07-01 安徽金日盛矿业有限责任公司 Ore pass enlargement construction method
CN105937395A (en) * 2015-09-14 2016-09-14 安徽建筑大学 Fast and highly-efficient tunneling method for large section of hard-rock tunnel in coal mine by combination of fully-mechanized tunneling and blasting driving
CN105937395B (en) * 2015-09-14 2018-10-26 安徽建筑大学 A kind of comprehensive dig of coal mine big cross section hard-rock tunnel combines rapidly and efficiently driving method with big gun pick
CN106089236A (en) * 2016-07-28 2016-11-09 北京昊华能源股份有限公司 A kind of district cross-cut coal seam notch overall structure and driving method
CN106089236B (en) * 2016-07-28 2018-03-02 北京昊华能源股份有限公司 A kind of district cross-cut coal seam notch overall structure and driving method
CN106285731A (en) * 2016-08-05 2017-01-04 湖南科技大学 The little courtyard radiant type of a kind of high Large chamber and the mixed construction method of step
CN106121689A (en) * 2016-08-22 2016-11-16 福州大学 A kind of excavation method of non-coal mine underground large stable chamber
CN108894804A (en) * 2018-08-14 2018-11-27 河北钢铁集团矿业有限公司 A kind of pick block construction in layer method of high Large chamber
CN109372519A (en) * 2018-10-10 2019-02-22 内蒙古伊泰煤炭股份有限公司 A kind of tunnel hexagonal cross-section tunneling construction method
CN109372519B (en) * 2018-10-10 2020-08-11 内蒙古伊泰煤炭股份有限公司 Tunneling construction method for hexagonal section of roadway
CN109488347A (en) * 2018-10-25 2019-03-19 浙江省隧道工程公司 A kind of excavation construction method for special formation chamber

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