CN102926758A - Roadway excavation construction method by using fully-mechanized excavation and blasting excavation combined benching method - Google Patents
Roadway excavation construction method by using fully-mechanized excavation and blasting excavation combined benching method Download PDFInfo
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- CN102926758A CN102926758A CN2012104676739A CN201210467673A CN102926758A CN 102926758 A CN102926758 A CN 102926758A CN 2012104676739 A CN2012104676739 A CN 2012104676739A CN 201210467673 A CN201210467673 A CN 201210467673A CN 102926758 A CN102926758 A CN 102926758A
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Abstract
The invention discloses a roadway excavation construction method in a special situation. A fully-mechanized excavation and blasting excavation combined benching method is adopted in the roadway excavation construction method. Blasting excavation or manual excavation construction is conducted at an upper part, and then temporary supports are erected after the construction at the upper part is implemented; and a lagged section at a lower part is constructed by a fully-mechanized excavator, and lower support tent legs are erected after the construction at the lower part is implemented. The roadway excavation construction method by using the fully-mechanized excavation and blasting excavation combined benching method is utilized, so that roof and head-on caving of a roadway can be prevented effectively, a safety factor in the construction can be improved, the construction progress is accelerated, the construction quality is ensured, and the construction cost is saved.
Description
Technical field
The present invention relates to the coal mine down-hole tunnel tunneling construction method, be specially and combine big gun associating benching tunnelling method tunneling construction method.
Background technology
Along with improving constantly of China's coal-mine mechanization degree, the fully-mechanized digging machine one-off construction is adopted in the State owned coal mine tunnelling mostly, and combine the pick construction tunnel at the mistake structural belt, when staying top coal or other relatively poor locations of top board, the roof control difficulty is large, very easily produce meet head on roof collapse or the side falling accident of meeting head in the work progress, not only bring great potential safety hazard to site operation, and wall caving is fallen the top and is caused that speed of application is slow, the later stage supporting effect is poor.The method that leading pre-notes macromolecular material is reinforced is cementing breaking roof to a certain extent, but its cost is higher, and the impact that grown by rock (or coal) bedding, can not be applicable to all crush roadway top boards.Under the roof cracking condition, to realize safety, quick, economic construction, must improve from job practices.
Summary of the invention
Technical problem solved by the invention provides a kind of simple, effective coal mine down-hole tunnel tunneling construction method, the safety factor in the time of can improving greatly the breaking roof construction, reducing construction cost.
For solving the problems of the technologies described above, the present invention takes to combine big gun associating benching tunnelling method tunnelling job practices, and the method may further comprise the steps:
1) light section construction: adopt and blow out the mode of construction or hand digging and excavate tunnel the first half;
2) set up temporary shoring bracket back timber, curb girder, waist and helped the top;
3) hysteresis planted agent construction: adopt fully-mechanized digging machine planted agent construction tunnel the latter half;
4) set up lower bracket canopy leg.
The construction of above-mentioned light section take farthest reduce construction to the destruction of top board as principle, farthest to reduce the wall caving of meeting head on, to fall against the wind the danger as purpose.
Above-mentioned light section construction refers to that span length is constant, only reduces the construction height of meeting head on a time, can directly reach the design drift section behind next step planted agent.
Above-mentioned light section construction refers to adopt blows out or the hand digging construction, specifically should determine according to top board intact condition and hardness factor.If the top board extreme difference can adopt the hand digging construction; If the top board hand digging is difficulty comparatively, can adopt the job practices of blowing out.
The present invention includes tunnel the meet head on construction of light section, second order lag planted agent construction, it is advantageous that: adopt in advance the light section construction, effectively reduced head-room, the risk of reduced wall caving, falling to push up, the roof safety during the location tunnelling of assurance roof cracking; Later stage, the tunnel planted agent adopted the fully-mechanized digging machine construction, constructed in the situation that set up temporary shoring bracket, had not only guaranteed safety, had also avoided having accelerated construction speed because of doing over again that wall caving, fall to push up etc. causes.
Described blowing out refers to that borehole depth is no more than 1 m, and each blashole charge amount is no more than 0.15 kg, and the borehole arrangement is according to in-situ determination, but too much unsuitable, blows out destruction to top board with minimizing.
Described tunnel the first half height H is 1.8～2.2 m, approximately is 1/2 of tunnel overall height; The latter half hysteresis tunnel, tunnel the first half length L is 2～5 m.
Description of drawings
Fig. 1 is the natural conditions schematic diagram of embodiment complexity.
Fig. 2 is job practices longitudinal sectional drawing of the present invention.
The specific embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present invention is described in detail.Should be appreciated that preferred embodiment just to explanation the present invention, rather than limiting the scope of the invention.
Embodiment:
The present embodiment is for combining pick construction alternate heading, have one (to move towards normal fault than major fault near the tunnel 1, drop 5 m, shown in Figure 1 in tomography situation such as the accompanying drawing), affected by tomography, instead incline in the coal seam in the section, but the very broken cementing properties of coal and rock is poor, construction period adopts and to dwindle advance of working cycle, skeleton and wedge fore-support, annotate the aggregate measures such as macromolecular material curing in advance, still can't prevent that top board from dropping, the part is fallen heights of roofs and is surpassed 5 m, way of escape many places capplce squeezes point, two and helps to shrink above 1.5 m, and affects safety production and later stage use.
When adopting constructure scheme of the present invention to this section roadway construction, its construction sequence is as follows:
1) light section construction: adopt and blow out the mode of construction or hand digging and excavate tunnel the first half 1a, tunnel the first half height H is 2 m, approximately is 1/2 of tunnel overall height;
2) set up temporary shoring bracket back timber, curb girder, waist and helped the top;
3) the planted agent's construction that lags behind: construction is adopted fully-mechanized digging machine 2 planted agent's construction tunnel the latter half hysteresis part 1b to winnning-off the latter half 5 m;
4) set up lower bracket canopy leg.
Need to prove, the light section construction refers to that tunnel 1 width is constant in the step 1), only reduces the construction height of meeting head on a time, can directly reach the design drift section after next step planted agent's construction; Light section construction is adopted and is blown out or the hand digging construction, and the present embodiment is blown out the borehole depth of construction and is no more than 1 m, and each blashole charge amount is no more than 0.15 kg; Light section construction take at utmost reduce construction to the destruction of top board as principle, fall against the wind the danger as purpose at utmost to reduce the wall caving of meeting head on.
The present invention adopts the light section construction in advance, has reduced to the full extent head-room, the risk of reduced wall caving, falling to push up; Fully-mechanized digging machine planted agent construction is adopted in the later stage tunnel, has accelerated construction speed.
Facts have proved, job practices of the present invention has effectively been prevented top board and the wall caving casualty accident of meeting head on; Improved site operation personnel's security context; Improved the supporting situation in supporting effect and later stage; Reduced such as the beautiful loose input that waits macromolecular material of horse, reduced the roadway construction cost.
Above embodiment just to the explanation of technical scheme of the present invention and unrestricted, the technology people of this area makes amendment to technical scheme of the present invention according to thinking provided by the invention or is equal to replacement, all should be considered as protection scope of the present invention.
Claims (4)
1. combine big gun associating benching tunnelling method tunnelling job practices, comprise the steps:
1) light section construction: adopt and blow out the mode of construction or hand digging and excavate tunnel the first half;
2) set up temporary shoring bracket back timber, curb girder, waist and helped the top;
3) hysteresis planted agent construction: adopt fully-mechanized digging machine planted agent construction tunnel the latter half;
4) set up lower bracket canopy leg.
2. job practices according to claim 1, be characterised in that: described blowing out refers to that borehole depth is no more than 1 m, and each blashole charge amount is no more than 0.15 kg.
3. job practices according to claim 1, be characterised in that: described tunnel the first half height is 1.8～2.2 m.
4. be characterised in that according to claim 1 or 3 described job practicess: the first half construction in tunnel is to leading the latter half 2～5 m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104676739A CN102926758A (en) | 2012-11-19 | 2012-11-19 | Roadway excavation construction method by using fully-mechanized excavation and blasting excavation combined benching method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104676739A CN102926758A (en) | 2012-11-19 | 2012-11-19 | Roadway excavation construction method by using fully-mechanized excavation and blasting excavation combined benching method |
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| CN102926758A true CN102926758A (en) | 2013-02-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321644A (en) * | 2013-05-29 | 2013-09-25 | 王卓 | Mechanical mode and control blasting combined tunneling method |
| CN107605493A (en) * | 2017-10-31 | 2018-01-19 | 淮矿西部煤矿投资管理有限公司 | A kind of comprehensive pick construction system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105131A (en) * | 2007-08-17 | 2008-01-16 | 中铁十二局集团有限公司 | Tunnel dredging method suitable for railway large section IV, V class rock tunnel |
| CN101545376A (en) * | 2009-05-07 | 2009-09-30 | 中铁四局集团第四工程有限公司 | Execution method for feeding tiny tunnel into ultra heavy section tunnel transversally |
| CN101718199A (en) * | 2009-12-20 | 2010-06-02 | 山西晋城无烟煤矿业集团有限责任公司 | Method for constructing underground coal mine chamber of large cross section |
| CN102808627A (en) * | 2012-09-07 | 2012-12-05 | 中国建筑第八工程局有限公司 | Underground excavation construction method of steel pipe shed |
-
2012
- 2012-11-19 CN CN2012104676739A patent/CN102926758A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101105131A (en) * | 2007-08-17 | 2008-01-16 | 中铁十二局集团有限公司 | Tunnel dredging method suitable for railway large section IV, V class rock tunnel |
| CN101545376A (en) * | 2009-05-07 | 2009-09-30 | 中铁四局集团第四工程有限公司 | Execution method for feeding tiny tunnel into ultra heavy section tunnel transversally |
| CN101718199A (en) * | 2009-12-20 | 2010-06-02 | 山西晋城无烟煤矿业集团有限责任公司 | Method for constructing underground coal mine chamber of large cross section |
| CN102808627A (en) * | 2012-09-07 | 2012-12-05 | 中国建筑第八工程局有限公司 | Underground excavation construction method of steel pipe shed |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103321644A (en) * | 2013-05-29 | 2013-09-25 | 王卓 | Mechanical mode and control blasting combined tunneling method |
| CN103321644B (en) * | 2013-05-29 | 2015-11-25 | 北京中铁瑞威基础工程有限公司 | The method of tunneling is combined in machinery and controlled blasting |
| CN107605493A (en) * | 2017-10-31 | 2018-01-19 | 淮矿西部煤矿投资管理有限公司 | A kind of comprehensive pick construction system and method |
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Application publication date: 20130213 |