CN101644157B - Space-time conversion exploitation method for high and steep rock slope stock ground near river - Google Patents
Space-time conversion exploitation method for high and steep rock slope stock ground near river Download PDFInfo
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- CN101644157B CN101644157B CN2009100634203A CN200910063420A CN101644157B CN 101644157 B CN101644157 B CN 101644157B CN 2009100634203 A CN2009100634203 A CN 2009100634203A CN 200910063420 A CN200910063420 A CN 200910063420A CN 101644157 B CN101644157 B CN 101644157B
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Abstract
The invention relates to a space-time conversion exploitation method for a high and steep rock slope stock ground near a river, aiming at the situation of very hard exploitation condition with steep terrain in the direction along the river of the high and steep rock slope stock ground near the river, and the gradient along the river is more than 50 degrees. In the invention, terrain creases on the halfway up the mountain are sufficiently utilized according to the principle of space-time conversion; a ballast cutting slot is excavated in advance in the direction along the river of a strip stock ground, and ballast storing space is reserved on the upper part of the high and steep rock slope yard near the river; and the vertical excavation and transportation with extreme difficulty of the upper part of the yard is converted to the relatively easy horizontal space excavation and transportation with excavating ballast materials on the upper part and sliding to the creases on the halfway up the mountain. A winze is arranged in the proper position of the ballast cutting slot, and excavated materials slide to smashing equipment through the winze to be smashed. A ballast blocking pit is reserved outside the ballast cutting slot and is heightened, and a high stone blocking pit is arranged at the foot of the mountain along the river for preventing rock ballast from rolling to the river. The invention achieves the goals of preventing river jam and ensuring the safe and normal excavation of the high and steep rock stock ground.
Description
Technical field
The present invention relates to power station high and steep rock slope stock ground near river exploitation construction field.
Technical background
Along with the extension of hydroelectric development to western high mountain gorge area, select high and steep rock slope stock ground near river as the source of dam concrete aggregate, be the unique selection of dam " silo ".High and steep rock slope stock ground near river often is arranged in the great rivers bank side valley of just developing, and the stock ground landform often is that the gradient that borders on the river reaches 50 °, even steeper along the slope of river direction.For preventing that high precipitous rock slope stock ground quarrying stone from falling into rivers, the blocking-up river can not adopt traditional direct blasting excavation mode towards rivers in the exploitation; Because high precipitous rock slope stock ground landform is precipitous, can't form conventional excavation slag charge transport routes, in the urgent need to seeking a kind of new, mining type safely and effectively, with the exploitation difficulty on the vertical space of high and steep rock slope stock ground near river, be converted to the Mining Transport of relatively easy horizontal space, to guarantee programming.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of high and steep rock slope stock ground near river space-time conversion extraction system, it can be when the power station high and steep rock slope stock ground near river be exploited, the vertical space exploitation that the exploitation difficulty is large on the high and steep rock slope stock ground near river is converted to the Mining Transport of relatively easy horizontal space, to improve production efficiency and safety, guarantee programming.
The object of the present invention is achieved like this: may further comprise the steps:
A. at first in time, utilize the landform wrinkle on being halfway up the hill, the suitable river direction along the band stock ground, excavation cuts slag chute 1 in advance, for the stock ground exploitation provides along the storing space of hillside isohypse direction, cut slag chute 1 outside and reserve debris retaining bank 2, with reinforced gabion debris retaining bank 2 is increased to 8-10m; The inboard excavation forms 1: 0.3 section slag chute side slope 8, and the supporting of in time following up keeps cutting slag chute side slope 8 and stablizes; Riverine limit is built with reinforced gabion and is blocked together stone dam 11 at the foot of the hill again, in time clears up transhipment to tumbling to the rock ballast at riverine toe place simultaneously;
B. secondly spatially, after the storing space of the isohypse direction that is halfway up the hill---section slag chute 1 formed, the later stage was carried out the construction of high precipitous rock slope stock ground upper slope opening road---expand the exploitation space of high gradient slope vertical direction; Carry out presplit blasting along stock ground aperture lines side slope again; With step bench blasting method exploitation top, high gradient slope rock material field 9, the coasting of excavation slag charge is to the storing space of first excavation formation---cut slag chute 1, realize that the high steep vertical space of rock side slope slag charge is to the storing space of isohypse direction---cut the conversion of slag chute, simultaneously to rock side slope follow-up supporting; After rock material field top stage heading blast was finished, cleaning top work surface rock ballast made rock ballast along the slag deposition groove of side slope landing to half way up the mountain isohypse direction, by transloading equipment or drop shaft 3 rock ballast is transported to sandstone system hopper again and carries out aggregate production.
Construction period, first at work plane arranged outside safe fence and bamboo springboard debris retaining wall, carry out again supporting, bench boring and the half way up the mountain isohypse direction storing space of side slope---cut the transhipment work that slag chute 1 stores material; After a section slag chute 1 stops the slag charge transhipment, carry out again the upper step heading blast construction of rock material field, so circulation, pass through space-time conversion, the difficulty of top, high precipitous rock stock ground being erect transportation is converted to half way up the mountain isohypse direction storing space, rock material field---cut the transhipment of relatively easily level or drop shaft 3 transportations that slag chute 1 stores material, thereby with the exploitation difficulty on the vertical space of high and steep rock slope stock ground near river, be converted to the Mining Transport of relatively easy horizontal space, realize the exploitation in high precipitous rock slope stock ground.
The stock ground that the high precipitous rock slope landform is not possessed natural coasting condition, after cutting slag chute 1 formation, to lean on first rock side slope fluctuating place at top to be whittled into along slope section slag chute side slope 8, possess coasting to half way up the mountain isohypse direction storing space until rock side slope top excavated material---behind section slag chute 1, carry out again follow-up construction.
Cutting slag chute 1 width is 25-40m.
When cutting slag chute 1 excavation construction, the explosion free face is substantially parallel with suitable river direction, the opposite direction that the aligning equipment personnel hide, i.e. the march into the arena direction of road 5 of half way up the mountain dorsad.
With the excavation slag charge at top, high precipitous rock stock ground, by section slag chute side slope 8 along sloping direction, slag charge is excavated at the top slips to half way up the mountain isohypse direction storing space---cut slag chute 1, finish the slag charge transportation with vehicle level transportation or drop shaft 3 again.
High and steep rock slope stock ground near river space-time conversion extraction system provided by the present invention, it is the principle according to space-time conversion, take full advantage of landform wrinkle on being halfway up the hill or the passage of manual amendment, cut slag chute by excavation, reserve the space of accumulated slag for high and steep rock slope stock ground near river top excavation, stock ground upper vertical excavation transportation with exceedingly difficult is converted to top excavation slag charge cuts the relatively easy horizontal space of slag chute along hill wash to half way up the mountain wrinkle area excavation transportation; Establish drop shaft cutting a slag chute correct position, excavated material slips to crushing appliance by drop shaft and carries out fragmentation.Cut the slag chute outside and reserve the debris retaining bank, riverine limit is established and is blocked together stone dam at the foot of the hill again, prevents that rock ballast is rolled in the river along the slope, reaches safe and effective exploitation, ensures the supply of dam concrete aggregate.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the invention process process floor map.
Fig. 2 is the invention process process generalized section.
Among the figure: 1, cut slag chute, 2, the debris retaining bank, 3, drop shaft, 4, woollen transport channel, 5, access tunnel, 6, former form line, 7, Permanent Slope, 8, cut the slag chute side slope, 9, mined bed, 10, highway, 11, block stone dam.
The specific embodiment
A kind of high and steep rock slope stock ground near river space-time conversion extraction system as depicted in figs. 1 and 2, principle according to space-time conversion, take full advantage of the landform wrinkle on being halfway up the hill, cut slag chute by excavation, reserve the space of accumulated slag for high and steep rock slope stock ground near river top excavation, stock ground upper vertical excavation transportation with exceedingly difficult is converted to top excavation slag charge cuts the relatively easy horizontal space of slag chute along hill wash to half way up the mountain wrinkle area excavation transportation; Establish drop shaft cutting a slag chute correct position, excavated material slips to crushing appliance by drop shaft and carries out fragmentation.Cut the slag chute outside and reserve the debris retaining bank, riverine limit is established and is blocked together stone dam at the foot of the hill again, prevents that rock ballast is rolled in the river along the slope.
Embodiment 1: the exploitation of the large racing current ditch of silk screen high precipitous rock slope stock ground space-time conversion
1, stock ground overview
(1) geographical position
Large racing current ditch building stones field is positioned at the inboard massif of left bank, Jinping Hydroelectric Power Station dam site downstream large racing current ditch highway, apart from the about 9km of dam site, and distribution elevation 1660 ~ 2100m, foot of the hill discrepancy in elevation 450m is arrived in the stock ground from the hilltop.The exposure stratum is the rotten quartzy packsand of thick～thick-layer shape and the thin sandy slate of powder in 1～3 layer of the 3rd section of the Triassic system confused flour beetle brain group (T2-3z3 (1～3)).The medium bed cinerous of the selecting material source quartzy packsand that goes bad.
(2) topography and geomorphology
The stock ground landform is a slope along the river direction, 50 ~ 65 ° of the gradients that borders on the river.The stock ground is about 1000m, and wide 200 ~ 250m is the bar-shape spread in elevation 1660 ~ 2100m, and place of production area is 200,000 m approximately
2Stock ground next-door neighbour's Yalongjiang River, physical features is steep, and its mining conditions is difficulty relatively.How exposed the earth's surface rock mass is, and ditch and gentle slope cover good, are piece gravelly soil, thick 3 ~ 5m, local 10 ~ 15m.
2, main construction sequence:
(1) at the 1865m of this stock ground half way up the mountain elevation, suitable band stock ground is direction along the river, excavates out one section slag chute 1.Cut approximately 25-40m of slag chute 1 width, debris retaining bank 2 is reserved in the outside, with reinforced gabion debris retaining bank 2 is increased to 9m; Inboard excavation slope is in time taked the temporary lining measure by design in 1: 0.3 behind the excavation, make side slope keep stable.For having prevented that a small amount of rock ballast is rolled in the river along the slope, riverine limit again with reinforced gabion build one 4m high block stone dam 11, in time clear up transhipment to tumbling to the rock ballast at riverine toe place simultaneously.
When (2) cutting slag chute 1 excavation, with the explosion free face over against the import of 1865m elevation tunnel, during explosion in the hole personnel and equipment all withdraw to safety place; After the 1865m elevation cuts slag chute and forms, carry out again the construction of stock ground open top road; After the opening road is finished 150m, begin to arrange top heading blast excavation construction, the side slope of heading blast excavation is taked presplit blasting, and in time carries out safety support on request; After the top heading blast is finished, adopt backhoe to carry out the rock ballast cleaning work of piling up on the work plane, make rock ballast along cutting slag chute side slope 8 along section slag chute 1 of hill wash to half way up the mountain, adopt again automobile vertically to be transported to the crushing appliance hopper by woollen transport channel 4 transportations and drop shaft 3 and produce.Access tunnel 5 designs according to traffic requirements.Carry out during the production and construction, first at work plane arranged outside safe fence and bamboo springboard debris retaining wall, safety support, bench boring and the 1865m elevation that carries out again side slope cuts the slag chute entrucking work of mucking haulage; After the 1865m elevation cuts slag chute and stops rock ballast transhipment, begin again to carry out top bench blast working.
(3) since stock ground exploitation the discrepancy in elevation is large up and down, massif is steep, and most of side slope is rock concordant excavation, therefore should avoid interchange operation, and in time carries out the safety support work of side slope.Take anchor pole, extension steel mesh reinforcement or wire gauze, the supporting of spray concrete for comparatively complete scar; For the imperfect position with cutting off the rock stratum of scar, take the supporting scheme of long anchor cable.
Embodiment 2:
Other processes are with embodiment 1, but the high precipitous rock slope landform does not possess certain stock ground of natural coasting condition, after cutting slag chute 1 formation, to lean on first rock side slope fluctuating place at top to be whittled into along slope section slag chute side slope 8, possess coasting to half way up the mountain isohypse direction storing space until rock side slope top excavated material---behind section slag chute 1, carry out again follow-up construction.
Claims (6)
1. high and steep rock slope stock ground near river space-time conversion exploitation method,
May further comprise the steps:
A. at first in time, landform wrinkle on utilization is halfway up the hill, the suitable river direction along the band stock ground, excavation cuts slag chute (1) in advance, for the stock ground exploitation provides along the storing space of hillside isohypse direction, cut slag chute (1) outside and reserve debris retaining bank (2), with reinforced gabion debris retaining bank (2) is increased to 8-10m; The inboard excavation forms 1: 0.3 section slag chute side slope (8), and the supporting of in time following up keeps cutting slag chute side slope (8) and stablizes; Riverine limit is built with reinforced gabion and is blocked together stone dam (11) at the foot of the hill again, in time clears up transhipment to tumbling to the excavation slag charge at riverine toe place simultaneously;
B. secondly spatially, after the storing space of the isohypse direction that is halfway up the hill-cut slag chute (1) formed, the later stage was carried out the exploitation space of the construction of high precipitous rock slope stock ground upper slope opening road-expansion high precipitous rock slope vertical direction; Carry out presplit blasting along stock ground aperture lines side slope again; With step bench blasting method exploitation top, high precipitous rock slope stock ground (9), the coasting of excavation slag charge is to the storing space of excavating first formation-section slag chute (1), realize the vertical space of high precipitous rock slope excavation slag charge to the storing space of isohypse direction-cut the conversion of slag chute, simultaneously to high precipitous rock slope follow-up supporting; After high precipitous rock slope stock ground top stage heading blast is finished, cleaning top work surface excavation slag charge, make the excavation slag charge cut slag chute along the side slope landing to half way up the mountain isohypse direction, will excavate slag charge by transloading equipment or drop shaft (3) again and be transported to sandstone system hopper and carry out aggregate production.
2. high and steep rock slope stock ground near river space-time conversion exploitation method according to claim 1, it is characterized in that: construction period, at work plane arranged outside safe fence and bamboo springboard debris retaining wall, the supporting, bench boring and the half way up the mountain isohypse direction storing space-section slag chute (1) that carry out side slope excavate the transhipment work of slag charge again first; After a section slag chute (1) stops to excavate the slag charge transhipment, carry out again the upper step heading blast construction of high precipitous rock slope stock ground, so circulation, pass through space-time conversion, the difficulty of top, high precipitous rock slope stock ground being erect transportation is converted to the transhipment of relatively easily level or drop shaft (3) transportation that half way up the mountain isohypse direction storing space, high precipitous rock slope stock ground-section slag chute (1) excavates slag charge, thereby with the exploitation difficulty on the vertical space of high and steep rock slope stock ground near river, be converted to the Mining Transport of relatively easy horizontal space, realize the exploitation in high precipitous rock slope stock ground.
3. high and steep rock slope stock ground near river space-time conversion exploitation method according to claim 1, it is characterized in that: the stock ground that the high precipitous rock slope landform is not possessed natural coasting condition, after cutting slag chute (1) formation, to lean on first rock side slope fluctuating place at top to be whittled into along slope section slag chute side slope (8), possess coasting to half way up the mountain isohypse direction storing space-section slag chute (1) until rock side slope top excavation slag charge, carry out again follow-up construction.
4. it is characterized in that according to claim 1 and 2 or 3 described high and steep rock slope stock ground near river space-time conversion exploitation methods: cutting slag chute (a 1) width is 25-40m.
5. high and steep rock slope stock ground near river space-time conversion exploitation method according to claim 1 and 2, it is characterized in that: when cutting slag chute (1) excavation construction, the explosion free face is substantially parallel with suitable river direction, the opposite direction that the aligning equipment personnel hide, i.e. the march into the arena direction of road (5) of half way up the mountain dorsad.
6. high and steep rock slope stock ground near river space-time conversion exploitation method according to claim 1, it is characterized in that: with the excavation slag charge at top, high precipitous rock slope stock ground, by section slag chute side slope (8) along sloping direction, slag chute (1) is excavated slag charge and slips to half way up the mountain isohypse direction storing space-cut at the top, finish the transportation of excavation slag charge with vehicle level transportation or drop shaft (3) again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100634203A CN101644157B (en) | 2009-07-29 | 2009-07-29 | Space-time conversion exploitation method for high and steep rock slope stock ground near river |
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| CN2009100634203A CN101644157B (en) | 2009-07-29 | 2009-07-29 | Space-time conversion exploitation method for high and steep rock slope stock ground near river |
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| CN101644157A CN101644157A (en) | 2010-02-10 |
| CN101644157B true CN101644157B (en) | 2013-03-27 |
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| CN102519324B (en) * | 2011-12-27 | 2013-09-11 | 武汉科技大学 | Presplitting blasting method for water holes close to high and steep slopes |
| CN103397636B (en) * | 2013-08-21 | 2016-03-09 | 北京华石纳固科技有限公司 | A kind of massif building stones vertical transport system and transportation resources thereof |
| CN105672150B (en) * | 2015-12-16 | 2018-05-01 | 中铁二院工程集团有限责任公司 | Sand-sliding slope cutting reinforcement protection structure |
| CN105442621A (en) * | 2015-12-29 | 2016-03-30 | 中国电建集团贵阳勘测设计研究院有限公司 | Material yard mining method used in complicated geological condition state |
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| CN108086981B (en) * | 2017-12-01 | 2019-12-17 | 中国水利水电第十一工程局有限公司 | construction method of high slope with zero distance to national road and more than 100m |
| CN108842781A (en) * | 2018-08-06 | 2018-11-20 | 中国电建集团华东勘测设计研究院有限公司 | A kind of Excavation of High And Steep Slopes tap cinder construction method |
| CN110607784B (en) * | 2019-09-19 | 2021-02-26 | 中电建十一局工程有限公司 | Construction method for rapid trough of high and steep slope |
| CN112212747B (en) * | 2020-10-11 | 2022-10-11 | 中建五局土木工程有限公司 | Non-blasting excavation construction method for mountain earth and stone in limited space |
| CN112197659A (en) * | 2020-10-14 | 2021-01-08 | 福建海峡科化富兴建设工程有限公司 | Pit mining treatment method based on high and steep cliff wall |
| CN112443329A (en) * | 2020-11-19 | 2021-03-05 | 中国水利水电第九工程局有限公司 | Open-pit mine excavation site structure capable of preventing flying stones and reducing noise and construction method |
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