CN105256775A - Ventilation system arrangement structure during construction period of underground cavern of hydropower station - Google Patents
Ventilation system arrangement structure during construction period of underground cavern of hydropower station Download PDFInfo
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- CN105256775A CN105256775A CN201510788460.XA CN201510788460A CN105256775A CN 105256775 A CN105256775 A CN 105256775A CN 201510788460 A CN201510788460 A CN 201510788460A CN 105256775 A CN105256775 A CN 105256775A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention discloses a ventilation system arrangement structure during a construction period of an underground cavern of a hydropower station. The ventilation system arrangement structure mainly consists of a main plant, a main transformer chamber, a tail water tube bulkhead gate chamber, a tail water pressure-regulating chamber, a tail water tunnel, a road tunnel and a tail regulating ventilation hole, wherein the main plant, the main transformer chamber, the tail waste tube bulkhead gate chamber, the tail water pressure-regulating chamber, the tail water tunnel and the road tunnel are separated by air inlet and ventilation channels; air inlet channels are arranged by combining with construction branch holes; and a special ventilation system arrangement structure for an air exhaustion adit and an air exhaustion vertical shaft is arranged on the top of each large cavern. The ventilation system arrangement structure has the beneficial effects that: ventilation and fume removal effects are good; discharge of a great deal of polluted air generated by operations such as drilling, blasting, deslagging and the like in a construction process can be guaranteed; and guarantee is provided for health and safety of a constructor.
Description
Technical field
The present invention relates to the loose cigarette field of Cavity Construction phase ventilation, be specifically related to a kind of Hydropower Station Underground cavern con struction phase ventilation system arrangement.
Background technology
Hydropower Station Underground tunnel is the complicated cavity group comprising the numerous caverns such as main building, transformer chamber, diversion tunnel, tailrace tunnel, bus tunnel, access tunnel composition, and each cavern is crisscross, arranges intensive, and construction link is coordinated mutually, influence each other, complicated construction technique.In constructing tunnel process, boring, explosion, the work progress such as to slag tap can produce a large amount of pollutant, once exceed control criterion, threaten to the health and safety of constructor.
Arranged by large hydropower station construction schemes of underground structure group phase ventilation systems such as investigation monkey rock power station, Luo Du power station, Xiangjiabahydropower project, finding in power station, white crane beach Diversion Tunnel field trial in conjunction with domestic and international expert, mainly there is following problem in the ventilation condition in current China hydropower industry Underground Engineering Excavation stage:
(1) the whole and part ventilation condition of underground hole group all lacks the system research of ventilation theory aspect.
(2) configuration of ventilating machinary is many from perception, historical experience, lacks considering as a whole of equipment optimal placement point selection and natural ventilation and Adjacent Working Face, each hole indoor air flow extremely unstable.
(3) logical, air draft ability is not mated with cavern excavation demand.
(4) compressed-air system air leak rate of air curtain is high, and when ventilation distance is longer, wind supply quantity is little, and ventilation equipment can not meet the requirement of long distance air feed.
(5) systematic research is not carried out to construction passage and vent passages.
(6) natural ventilation utilizes abundant not, does not substantially arrange exhaust system, and only pressured inlet air provides construction required fresh air; Mechanical ventilation efficiency does not obtain fully effectively playing, and work plane effective wind rate utilization rate is low, fan operation efficiency is low, is mainly manifested in local return circulation loss and Air escape branch phenomenon is serious.
Summary of the invention
The medium-and-large-sized Underground Excavation Cluster of Hydropower Station construction period ventilation system that instant invention overcomes prior art arranges to have that ventilation effect in work progress is bad to be waited not enough, provides a kind of and can ensure to have in each cavern con struction process of power station good ventilation and to fall apart the Hydropower Station Underground cavern con struction phase ventilation system arrangement of cigarette effect.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A kind of Hydropower Station Underground cavern con struction phase ventilation system arrangement, it adjusts ventilation hole composition primarily of main building, transformer chamber, draft tube Emergency Gate room, down stream surge-chamber, tailwater tunnel, Highway Tunnel and tail, described main building one end is air intake, the other end is air outlet, in the position of main building air intake, main building working tunnel is installed, described main building working tunnel top is equipped with main building air inlet duct, and this main building air inlet duct is inclined in main building working tunnel, described main building air inlet duct is provided with main building for blower fan in its end away from main building, in the position of main building air outlet, main building exhaust air shaft is installed, and this main building exhaust air shaft is positioned on the roof of main building, described main building exhaust air shaft is connected with main building air draft adit, the position be connected with main building air draft adit at described main building exhaust air shaft is provided with main building exhaust blower and main building windbreak, and described main building adjusts hole of ventilating to be communicated with by main building exhaust air shaft with main building air draft adit and tail, described transformer chamber one end is air intake, the other end is air outlet, in the position of transformer chamber's air intake, transformer chamber's working tunnel is installed, described transformer chamber's working tunnel top is equipped with transformer chamber's air inlet duct, and this transformer chamber's air inlet duct is inclined in transformer chamber's working tunnel, described transformer chamber air inlet duct is provided with transformer chamber for blower fan in its end away from transformer chamber, in the position of transformer chamber's air outlet, transformer chamber's exhaust air shaft is installed, and this transformer chamber's exhaust air shaft is positioned on the roof of transformer chamber, described transformer chamber exhaust air shaft is connected with transformer chamber's air draft adit, the position be connected with transformer chamber air draft adit at described transformer chamber exhaust air shaft is provided with transformer chamber's exhaust blower and transformer chamber's windbreak, and described transformer chamber adjusts hole of ventilating to be communicated with by transformer chamber's exhaust air shaft with main building air draft adit and tail, one end, described draft tube Emergency Gate room is air intake, the other end is air outlet, in the position of draft tube Emergency Gate room air intake, draft tube Emergency Gate room working tunnel is installed, working tunnel top, described draft tube Emergency Gate room is equipped with draft tube Emergency Gate room air inlet duct, and this draft tube Emergency Gate room air inlet duct, be inclined in the working tunnel of draft tube Emergency Gate room, described draft tube Emergency Gate room air inlet duct is provided with draft tube Emergency Gate room for blower fan in its end away from draft tube Emergency Gate room, in the position of draft tube Emergency Gate room air outlet, draft tube Emergency Gate room exhaust air shaft is installed, and this draft tube Emergency Gate room exhaust air shaft is positioned on the roof of draft tube Emergency Gate room, described draft tube Emergency Gate room exhaust air shaft is connected with draft tube Emergency Gate room air draft adit, in the position that described draft tube Emergency Gate room exhaust air shaft is connected with draft tube Emergency Gate room air draft adit, draft tube Emergency Gate room exhaust blower and draft tube Emergency Gate room windbreak are installed, and described draft tube Emergency Gate room adjusts hole of ventilating to be communicated with by draft tube Emergency Gate room exhaust air shaft with draft tube Emergency Gate room air draft adit and tail, described down stream surge-chamber one end is air intake, the other end is air outlet, in the position of down stream surge-chamber air intake, down stream surge-chamber working tunnel is installed, described down stream surge-chamber working tunnel top is equipped with down stream surge-chamber air inlet duct, and this down stream surge-chamber air inlet duct is inclined in main down stream surge-chamber working tunnel, described down stream surge-chamber air inlet duct is provided with down stream surge-chamber for blower fan in its end away from down stream surge-chamber, in the position of down stream surge-chamber air outlet, down stream surge-chamber exhaust air shaft is installed, and this down stream surge-chamber exhaust air shaft is positioned on the roof of down stream surge-chamber, described down stream surge-chamber exhaust air shaft is connected with down stream surge-chamber air draft adit, the position be connected with down stream surge-chamber air draft adit at described down stream surge-chamber exhaust air shaft is provided with down stream surge-chamber exhaust blower and down stream surge-chamber windbreak, and described down stream surge-chamber adjusts hole of ventilating to be communicated with by down stream surge-chamber exhaust air shaft with down stream surge-chamber air draft adit and tail, described tailwater tunnel one end is air intake, the other end is air outlet, in the position of tailwater tunnel air intake, tailwater tunnel working tunnel is installed, described tailwater tunnel working tunnel top is equipped with tailwater tunnel air inlet duct, and this tailwater tunnel air inlet duct is inclined in tailwater tunnel working tunnel, described tailwater tunnel air inlet duct is provided with tailwater tunnel for blower fan in its end away from tailwater tunnel, in the position of tailwater tunnel air outlet, tailwater tunnel exhaust air shaft is installed, and this tailwater tunnel exhaust air shaft is positioned on the roof of tailwater tunnel, described tailwater tunnel exhaust air shaft is connected with tailwater tunnel air draft adit, the position be connected with tailwater tunnel air draft adit at described tailwater tunnel exhaust air shaft is provided with tailwater tunnel exhaust blower and tailwater tunnel windbreak, and described tailwater tunnel adjusts hole of ventilating to be communicated with by tailwater tunnel exhaust air shaft with tailwater tunnel air draft adit and tail, described Highway Tunnel one end is air intake, the other end is air outlet, in the position of Highway Tunnel air intake, Highway Tunnel working tunnel is installed, described Highway Tunnel working tunnel top is equipped with Highway Tunnel air inlet duct, and this Highway Tunnel air inlet duct is inclined in Highway Tunnel working tunnel, described Highway Tunnel air inlet duct is provided with Highway Tunnel for blower fan in its end away from Highway Tunnel, in the position of Highway Tunnel air outlet, Highway Tunnel exhaust air shaft is installed, and this Highway Tunnel exhaust air shaft is positioned on the roof of Highway Tunnel, described Highway Tunnel exhaust air shaft is connected with Highway Tunnel air draft adit, the position be connected with Highway Tunnel air draft adit at described Highway Tunnel exhaust air shaft is provided with Highway Tunnel exhaust blower and Highway Tunnel windbreak, and described Highway Tunnel adjusts hole of ventilating to be communicated with by Highway Tunnel exhaust air shaft with Highway Tunnel air draft adit and tail.
Further technical scheme is, described tail adjusts the section in ventilation hole to be gateway opening type, and this section is of a size of 9m × 8m.
Further technical scheme is, the quantity of described down stream surge-chamber air draft adit is four, and the length of four down stream surge-chamber air draft adits is respectively 50.41m, 51.12m, 52.17m, 53.38m.
Further technical scheme is, the height of described main building exhaust air shaft is 37.4m, and the diameter of its cross section is 10m, and described main building air draft adit section is of a size of 5m × 5.6m.
Further technical scheme is, the height of described transformer chamber exhaust air shaft is 37.4m, and the diameter of its cross section is 10m, and described transformer chamber air draft adit section is of a size of 5m × 5.6m.
Further technical scheme is, the diameter of the cross section of described tailwater tunnel exhaust air shaft is 3.5m.
Further technical scheme is, the section of described down stream surge-chamber air draft adit is of a size of 3m × 3.5.
Compared with prior art, the invention has the beneficial effects as follows:
Ventilation system arrangement provided by the invention has good ventilation and to fall apart cigarette effect, can ensure to be discharged by a large amount of contaminated airs that boring, explosion, the work progress such as to slag tap produce in work progress, causes provide safeguard to constructor's health and safety.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the Hydropower Station Underground cavern con struction phase ventilation system arrangement of an embodiment of the present invention.
Fig. 2 is main building open air exhaust structural representation in the Hydropower Station Underground cavern con struction phase ventilation system arrangement of an embodiment of the present invention.
As shown in the figure, wherein corresponding Reference numeral name is called:
1 main building, 11 main buildings are for blower fan, 12 main building air inlet ducts, 13 main building working tunnel, 14 main building exhaust air shafts, 15 main building air draft adits, 16 main building exhaust blowers, 17 main building windbreaks, 18 foul atmospheres, 19 fresh airs, 2 transformer chamber, 21 transformer chamber are for blower fan, 22 transformer chamber's air inlet ducts, 23 transformer chamber's working tunnel, 24 transformer chamber's exhaust air shafts, 25 transformer chamber's air draft adits, 3 draft tube Emergency Gate rooms, 31 draft tube Emergency Gate rooms are for blower fan, 32 draft tube Emergency Gate room air inlet ducts, 33 draft tube Emergency Gate room working tunnel, 34 draft tube Emergency Gate room exhaust air shafts, 35 draft tube Emergency Gate room air draft adits, 4 down stream surge-chambers, 41 down stream surge-chambers are for blower fan, 42 down stream surge-chamber air inlet ducts, 43 down stream surge-chamber working tunnel, 44 down stream surge-chamber exhaust air shafts, 45 down stream surge-chamber air draft adits, 5 tailwater tunnels, 51 tailwater tunnels are for blower fan, 52 tailwater tunnel air inlet ducts, 53 tailwater tunnel working tunnel, 54 tailwater tunnel exhaust air shafts, 55 tailwater tunnel air draft adits, 6 Highway Tunnels, 61 Highway Tunnels are for blower fan, 62 Highway Tunnel air inlet ducts, 63 Highway Tunnel working tunnel, 64 Highway Tunnel exhaust air shafts, 65 Highway Tunnel air draft adits, 7 tails adjust ventilation hole.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further elaborated.
A kind of Hydropower Station Underground cavern con struction phase ventilation system arrangement as shown in Figure 1-2, it adjusts ventilation hole 7 to form primarily of main building 1, transformer chamber 2, draft tube Emergency Gate room 3, down stream surge-chamber 4, tailwater tunnel 5, Highway Tunnel 6 and tail;
Described main building 1 one end is air intake, the other end is air outlet, in the position of main building 1 air intake, main building working tunnel 13 is installed, described main building working tunnel 13 top is equipped with main building air inlet duct 12, and this main building air inlet duct 12 is inclined in main building working tunnel 13, described main building air inlet duct 12 is provided with main building for blower fan 11 in its end away from main building 1, in the position of main building 1 air outlet, main building exhaust air shaft 14 is installed, and this main building exhaust air shaft 14 is positioned on the roof of main building 1, described main building exhaust air shaft 14 is connected with main building air draft adit 15, the position be connected with main building air draft adit 15 at described main building exhaust air shaft 14 is provided with main building exhaust blower 16 and main building windbreak 17, and described main building 1 adjusts hole 7 of ventilating to be communicated with by main building exhaust air shaft 14 and main building air draft adit 15 and tail,
Described transformer chamber 2 one end is air intake, the other end is air outlet, in the position of transformer chamber 2 air intake, transformer chamber's working tunnel 23 is installed, described transformer chamber working tunnel 23 top is equipped with transformer chamber's air inlet duct 22, and this transformer chamber's air inlet duct 22 is inclined in transformer chamber's working tunnel 23, described transformer chamber air inlet duct 22 is provided with transformer chamber for blower fan 21 in its end away from transformer chamber 2, in the position of transformer chamber 2 air outlet, transformer chamber's exhaust air shaft 24 is installed, and this transformer chamber's exhaust air shaft 24 is positioned on the roof of transformer chamber 2, described transformer chamber exhaust air shaft 24 is connected with transformer chamber's air draft adit 25, the position be connected with transformer chamber air draft adit 25 at described transformer chamber exhaust air shaft 24 is provided with transformer chamber's exhaust blower and transformer chamber's windbreak, and described transformer chamber 2 adjusts hole 7 of ventilating to be communicated with by transformer chamber's exhaust air shaft 24 and main building air draft adit 25 and tail,
One end, described draft tube Emergency Gate room 3 is air intake, the other end is air outlet, in the position of draft tube Emergency Gate room 3 air intake, draft tube Emergency Gate room working tunnel 33 is installed, working tunnel 33 top, described draft tube Emergency Gate room is equipped with draft tube Emergency Gate room air inlet duct 32, and this draft tube Emergency Gate room air inlet duct 32, be inclined at draft tube Emergency Gate room working tunnel (in 33, described draft tube Emergency Gate room air inlet duct 32 is provided with draft tube Emergency Gate room for blower fan 31 in its end away from draft tube Emergency Gate room 3, in the position of draft tube Emergency Gate room 3 air outlet, draft tube Emergency Gate room exhaust air shaft 34 is installed, and this draft tube Emergency Gate room exhaust air shaft 34 is positioned on the roof of draft tube Emergency Gate room 3, described draft tube Emergency Gate room exhaust air shaft 34 is connected with draft tube Emergency Gate room air draft adit 35, in the position that described draft tube Emergency Gate room exhaust air shaft 34 is connected with draft tube Emergency Gate room air draft adit 35, draft tube Emergency Gate room exhaust blower and draft tube Emergency Gate room windbreak are installed, and described draft tube Emergency Gate room 3 adjusts hole 7 of ventilating to be communicated with by draft tube Emergency Gate room exhaust air shaft 34 with draft tube Emergency Gate room air draft adit 35 and tail,
Described down stream surge-chamber 4 one end is air intake, the other end is air outlet, in the position of down stream surge-chamber 4 air intake, down stream surge-chamber working tunnel 43 is installed, described down stream surge-chamber working tunnel 43 top is equipped with down stream surge-chamber air inlet duct 42, and this down stream surge-chamber air inlet duct 42 is inclined in main down stream surge-chamber working tunnel 43, described down stream surge-chamber air inlet duct 42 is provided with down stream surge-chamber for blower fan 41 in its end away from down stream surge-chamber 4, in the position of down stream surge-chamber 4 air outlet, down stream surge-chamber exhaust air shaft 44 is installed, and this down stream surge-chamber exhaust air shaft 44 is positioned on the roof of down stream surge-chamber 4, described down stream surge-chamber exhaust air shaft 44 is connected with down stream surge-chamber air draft adit 45, the position be connected with down stream surge-chamber air draft adit 45 at described down stream surge-chamber exhaust air shaft 44 is provided with down stream surge-chamber exhaust blower and down stream surge-chamber windbreak, and described down stream surge-chamber 4 adjusts hole 7 of ventilating to be communicated with by down stream surge-chamber exhaust air shaft 44 and down stream surge-chamber air draft adit 45 and tail,
Described tailwater tunnel 5 one end is air intake, the other end is air outlet, in the position of tailwater tunnel 5 air intake, tailwater tunnel working tunnel 53 is installed, described tailwater tunnel working tunnel 53 top is equipped with tailwater tunnel air inlet duct 52, and this tailwater tunnel air inlet duct 52 is inclined in tailwater tunnel working tunnel 53, described tailwater tunnel air inlet duct 52 is provided with tailwater tunnel for blower fan 51 in its end away from tailwater tunnel 5, in the position of tailwater tunnel 5 air outlet, tailwater tunnel exhaust air shaft 54 is installed, and this tailwater tunnel exhaust air shaft 54 is positioned on the roof of tailwater tunnel 5, described tailwater tunnel exhaust air shaft 54 is connected with tailwater tunnel air draft adit 55, the position be connected with tailwater tunnel air draft adit 55 at described tailwater tunnel exhaust air shaft 54 is provided with tailwater tunnel exhaust blower and tailwater tunnel windbreak, and described tailwater tunnel 5 adjusts hole 7 of ventilating to be communicated with by tailwater tunnel exhaust air shaft 54 and tailwater tunnel air draft adit 55 and tail,
Described Highway Tunnel 6 one end is air intake, the other end is air outlet, in the position of Highway Tunnel 6 air intake, Highway Tunnel working tunnel 63 is installed, described Highway Tunnel working tunnel 63 top is equipped with Highway Tunnel air inlet duct 62, and this Highway Tunnel air inlet duct 62 is inclined at described Highway Tunnel air inlet duct 62 in Highway Tunnel working tunnel 63 is provided with Highway Tunnel in its end away from Highway Tunnel 6 for blower fan 61, in the position of Highway Tunnel 6 air outlet, Highway Tunnel exhaust air shaft 64 is installed, and this Highway Tunnel exhaust air shaft 64 is positioned on the roof of Highway Tunnel 6, described Highway Tunnel exhaust air shaft 64 is connected with Highway Tunnel air draft adit 65, the position be connected with Highway Tunnel air draft adit 65 at described Highway Tunnel exhaust air shaft 64 is provided with Highway Tunnel exhaust blower and Highway Tunnel windbreak, and described Highway Tunnel 6 adjusts hole 7 of ventilating to be communicated with by Highway Tunnel exhaust air shaft 64 and Highway Tunnel air draft adit 65 and tail.
In the technical program, in power station, each needs region (the such as main building 1 of construction, transformer chamber 2, draft tube Emergency Gate room 3, down stream surge-chamber 4, tailwater tunnel 5, Highway Tunnel 6) first in the position of its air intake, all working tunnel is set, then air inlet duct is laid at working tunnel top, arrange for blower fan again in air inlet duct one end, like this by just ensureing that for blower fan fresh air 19 direction as shown in Figure 2 enters region (the such as main building 1 needing construction from outside, transformer chamber 2, draft tube Emergency Gate room 3, down stream surge-chamber 4, tailwater tunnel 5, Highway Tunnel 6), then at the top of their air outlet positions, all exhaust air shaft is set, exhaust air shaft upper end is communicated with air draft adit, and then in air draft adit, exhaust blower and windbreak are set, hole 7 of ventilating is adjusted to be communicated with on air draft adit and tail again, adjusting ventilation hole 7 for living discharge-channel by tail, then giving off many air draft adits and region (the such as main building 1 needing to construct, transformer chamber 2, draft tube Emergency Gate room 3, down stream surge-chamber 4, tailwater tunnel 5, Highway Tunnel 6) be communicated with, the air draft cavity group of a composition system, so just at utmost can utilize on the basis of the hood that naturally falls apart of exhaust air shaft and arrange that exhaust blower and windbreak are to strengthen the discharge capacity of foul atmosphere 18, foul atmosphere 18 just can circulating direction as shown in Figure 2 from region (the such as main building 1 needing construction, transformer chamber 2, draft tube Emergency Gate room 3, down stream surge-chamber 4, tailwater tunnel 5, Highway Tunnel 6) middle discharge, so just can ensure will hole in work progress, explosion, a large amount of contaminated airs that the work progress such as to slag tap produces are discharged, and cause provide safeguard to constructor's health and safety.
The technical program is main building 1, transformer chamber 2, draft tube Emergency Gate room 3, down stream surge-chamber 4, tailwater tunnel 5, Highway Tunnel 6 all adopt and be separated into air exhaust passage, air inlet duct is in conjunction with layout of construction drift, and each large Mass Near The Top of Underground Cavity arranges special air draft adit and the ventilation system arrangement of exhaust air shaft.
Embodiment 1
Embodiment 1 is the structure of arranging ventilation system in some hydropower station left bank, now tail adjusts the total length in ventilation hole 7 to be 1310.94m, tail adjusts the section in ventilation hole 7 to be gateway opening type, and this section is of a size of 9m × 8m, above the down stream surge-chamber 4 of left bank, arrange that four length are respectively 50.41m, 51.12m, 52.17m, the down stream surge-chamber air draft adit 45 of 53.38m thus solve loose cigarette problem of ventilating when down stream surge-chamber 4 is opened, main building air draft adit 15 is arranged above left bank main building 1, transformer chamber's air draft adit 25 is arranged above left bank transformer chamber 2, the length of main building air draft adit 15 is 288.0m, the length of transformer chamber's air draft adit 25 is 302.7m, the height of main building exhaust air shaft 14 and transformer chamber's exhaust air shaft 24 is 37.4m, the diameter of their cross sections is 10m, and this main building exhaust air shaft 14 combines with the permanent exhaust air shaft hypomere of main building 1, eight tailwater tunnel working tunnel 53 and eight tailwater tunnel exhaust air shafts 54 are arranged above left bank tailwater tunnel 5, article eight, the length of tailwater tunnel working tunnel 53 is 15m, the height of eight tailwater tunnel exhaust air shafts 54 is respectively 96.9m, 95.2m, 96.5m, 96.5m, 89.5m, 91.8m, 95.4m, 96.3m, the diameter of tailwater tunnel exhaust air shaft 54 cross section is Φ=3.5m, large-scale raise boring machine is all adopted to construct, left bank Highway Tunnel working tunnel 63 length is 204.9m, the height of Highway Tunnel exhaust air shaft 64 is 51.6m, the diameter of its cross section is 4.2m.
Ventilation loose cigarette in left bank generating system by piloting water each groundwork face is respond well, but because draft tube Emergency Gate room, left bank 3 and down stream surge-chamber exhaust air shaft 44 are away from Coal Face Passing Through, the negative pressure that exhaust blower is formed is not enough to extract work plane contaminated air in time out, each position air quality is poor, in order to solve the problem, to left bank local ventilation unfavorable position optimal design:
Draft tube Emergency Gate room 3, left bank crown sidewall increases a draft tube Emergency Gate room air draft adit 35 newly, draft tube Emergency Gate room air draft adit 35 cross dimensions is 3m × 3.5m, length is respectively 125m, the former draft tube Emergency Gate room exhaust blower being arranged in exhaust air shaft 34 limit, draft tube Emergency Gate room is moved to draft tube Emergency Gate room air draft adit 35 hole, and arrange draft tube Emergency Gate room when wind increases by force pollution discharging ability of air simultaneously.
Embodiment 2
Embodiment 2 is the structure of arranging ventilation system in some hydropower station left bank, now tail adjusts the total length in ventilation hole 7 to be 969.4m, tail adjusts the section in ventilation hole 7 to be gateway opening type, and this section is of a size of 9m × 8m, main building air draft adit 15 is arranged above right bank main building 1, transformer chamber's air draft adit 25 is arranged above right bank transformer chamber 2, the length of main building air draft adit 15 is 242.6m, the length of transformer chamber's air draft adit 25 is 253.2m, the height of main building exhaust air shaft 14 and transformer chamber's exhaust air shaft 24 is 33.1m, the diameter of their cross sections is 10m, and this main building exhaust air shaft 14 combines with the permanent exhaust air shaft hypomere of main building 1, eight tailwater tunnel working tunnel 53 and eight tailwater tunnel exhaust air shafts 54 are arranged above right bank tailwater tunnel 5, article eight, the length of tailwater tunnel working tunnel 53 is 15m, the height of eight tailwater tunnel exhaust air shafts 54 is respectively 96.9m, 95.2m, 96.5m, 96.5m, 89.5m, 91.8m, 95.4m, 96.3m, the diameter of tailwater tunnel exhaust air shaft 54 cross section is Φ=3.5m, large-scale raise boring machine is all adopted to construct, it is 79.5m that Right Bank Road tunnel construction props up hole 63 length, the height of Highway Tunnel exhaust air shaft 64 is 53.4m, the diameter of its cross section is 3.5m.
Ventilation loose cigarette in right bank generating system by piloting water each groundwork face is respond well, but because right bank draft tube Emergency Gate room 3 and down stream surge-chamber exhaust air shaft 44 are away from Coal Face Passing Through, the negative pressure that exhaust blower is formed is not enough to extract work plane contaminated air in time out, each position air quality is poor, in order to solve the problem, to right bank local ventilation unfavorable position optimal design:
Right bank draft tube Emergency Gate room 3 crown sidewall increases a draft tube Emergency Gate room air draft adit 35 newly, draft tube Emergency Gate room air draft adit 35 cross dimensions is 3m × 3.5m, length is respectively 125m, the former draft tube Emergency Gate room exhaust blower being arranged in exhaust air shaft 34 limit, draft tube Emergency Gate room is moved to draft tube Emergency Gate room air draft adit 35 hole, and arrange draft tube Emergency Gate room when wind increases by force pollution discharging ability of air simultaneously
Adjust each dome arranging exhaust air shaft to four down stream surge-chamber 4 of 1 diameter 2m in anchoring observation hole at right bank tail, every bar Shaft bank arranges air door and regulates, and the contaminated air in down stream surge-chamber 4 is entered tail and adjusts anchoring observation hole; Anchoring observation hole is adjusted to adjust ventilation hole 7 suitable position to arrange ear hole near tail at tail, in ear hole, arrange that 2 diameter 2m are that exhaust air shaft adjusts ear hole, bottom, hole 7 of ventilating to be communicated with tail, the down stream surge-chamber exhaust blower that down stream surge-chamber exhaust air shaft 44 mouthfuls is installed is moved to and adjusts in ventilation ear hole, bottom, hole 7 at tail, the ability that windbreak strengthens pollution discharging air is set.
Above detailed description of the invention is described in detail to essence of the present invention; but can not limit protection scope of the present invention; apparently; under enlightenment of the present invention; the art those of ordinary skill can also carry out many improvement and modification; it should be noted that these improve and modify all to drop within claims of the present invention.
Claims (7)
1. a Hydropower Station Underground cavern con struction phase ventilation system arrangement, it is characterized in that, it adjusts ventilation hole (7) composition primarily of main building (1), transformer chamber (2), draft tube Emergency Gate room (3), down stream surge-chamber (4), tailwater tunnel (5), Highway Tunnel (6) and tail;
Described main building (1) one end is air intake, the other end is air outlet, in the position of main building (1) air intake, main building working tunnel (13) is installed, described main building working tunnel (13) top is equipped with main building air inlet duct (12), and this main building air inlet duct (12) is inclined in main building working tunnel (13), described main building air inlet duct (12) is provided with main building for blower fan (11) in its end away from main building (1), in the position of main building (1) air outlet, main building exhaust air shaft (14) is installed, and this main building exhaust air shaft (14) is positioned on the roof of main building (1), described main building exhaust air shaft (14) is connected with main building air draft adit (15), in the position that described main building exhaust air shaft (14) is connected with main building air draft adit (15), main building exhaust blower (16) and main building windbreak (17) are installed, and described main building (1) adjusts hole (7) of ventilating to be communicated with by main building exhaust air shaft (14) and main building air draft adit (15) and tail,
Described transformer chamber (2) one end is air intake, the other end is air outlet, in the position of transformer chamber (2) air intake, transformer chamber's working tunnel (23) is installed, described transformer chamber working tunnel (23) top is equipped with transformer chamber's air inlet duct (22), and this transformer chamber's air inlet duct (22) is inclined in transformer chamber's working tunnel (23), described transformer chamber air inlet duct (22) is provided with transformer chamber for blower fan (21) in its end away from transformer chamber (2), in the position of transformer chamber (2) air outlet, transformer chamber's exhaust air shaft (24) is installed, and this transformer chamber's exhaust air shaft (24) is positioned on the roof of transformer chamber (2), described transformer chamber exhaust air shaft (24) is connected with transformer chamber's air draft adit (25), the position be connected with transformer chamber's air draft adit (25) in described transformer chamber exhaust air shaft (24) is provided with transformer chamber's exhaust blower and transformer chamber's windbreak, and described transformer chamber (2) adjusts hole (7) of ventilating to be communicated with by transformer chamber's exhaust air shaft (24) and main building air draft adit (25) and tail,
Described draft tube Emergency Gate room (3) one end is air intake, the other end is air outlet, in the position of draft tube Emergency Gate room (3) air intake, draft tube Emergency Gate room working tunnel (33) is installed, working tunnel (33) top, described draft tube Emergency Gate room is equipped with draft tube Emergency Gate room air inlet duct (32), and this draft tube Emergency Gate room air inlet duct (32), be inclined in draft tube Emergency Gate room working tunnel (33), described draft tube Emergency Gate room air inlet duct (32) is provided with draft tube Emergency Gate room for blower fan (31) in its end away from draft tube Emergency Gate room (3), in the position of draft tube Emergency Gate room (3) air outlet, draft tube Emergency Gate room exhaust air shaft (34) is installed, and this draft tube Emergency Gate room exhaust air shaft (34) is positioned on the roof of draft tube Emergency Gate room (3), described draft tube Emergency Gate room exhaust air shaft (34) is connected with draft tube Emergency Gate room air draft adit (35), draft tube Emergency Gate room exhaust blower and draft tube Emergency Gate room windbreak are installed in the position that described draft tube Emergency Gate room exhaust air shaft (34) is connected with draft tube Emergency Gate room air draft adit (35), and described draft tube Emergency Gate room (3) adjusts hole (7) of ventilating to be communicated with by draft tube Emergency Gate room exhaust air shaft (34) and draft tube Emergency Gate room air draft adit (35) and tail,
Described down stream surge-chamber (4) one end is air intake, the other end is air outlet, in the position of down stream surge-chamber (4) air intake, down stream surge-chamber working tunnel (43) is installed, described down stream surge-chamber working tunnel (43) top is equipped with down stream surge-chamber air inlet duct (42), and this down stream surge-chamber air inlet duct (42) is inclined in main down stream surge-chamber working tunnel (43), described down stream surge-chamber air inlet duct (42) is provided with down stream surge-chamber for blower fan (41) in its end away from down stream surge-chamber (4), in the position of down stream surge-chamber (4) air outlet, down stream surge-chamber exhaust air shaft (44) is installed, and this down stream surge-chamber exhaust air shaft (44) is positioned on the roof of down stream surge-chamber (4), described down stream surge-chamber exhaust air shaft (44) is connected with down stream surge-chamber air draft adit (45), the position be connected with down stream surge-chamber air draft adit (45) described down stream surge-chamber exhaust air shaft (44) is provided with down stream surge-chamber exhaust blower and down stream surge-chamber windbreak, and described down stream surge-chamber (4) adjusts hole (7) of ventilating to be communicated with by down stream surge-chamber exhaust air shaft (44) and down stream surge-chamber air draft adit (45) and tail,
Described tailwater tunnel (5) one end is air intake, the other end is air outlet, in the position of tailwater tunnel (5) air intake, tailwater tunnel working tunnel (53) is installed, described tailwater tunnel working tunnel (53) top is equipped with tailwater tunnel air inlet duct (52), and this tailwater tunnel air inlet duct (52) is inclined in tailwater tunnel working tunnel (53), described tailwater tunnel air inlet duct (52) is provided with tailwater tunnel for blower fan (51) in its end away from tailwater tunnel (5), in the position of tailwater tunnel (5) air outlet, tailwater tunnel exhaust air shaft (54) is installed, and this tailwater tunnel exhaust air shaft (54) is positioned on the roof of tailwater tunnel (5), described tailwater tunnel exhaust air shaft (54) is connected with tailwater tunnel air draft adit (55), the position be connected with tailwater tunnel air draft adit (55) described tailwater tunnel exhaust air shaft (54) is provided with tailwater tunnel exhaust blower and tailwater tunnel windbreak, and described tailwater tunnel (5) adjusts hole (7) of ventilating to be communicated with by tailwater tunnel exhaust air shaft (54) and tailwater tunnel air draft adit (55) and tail,
Described Highway Tunnel (6) one end is air intake, the other end is air outlet, in the position of Highway Tunnel (6) air intake, Highway Tunnel working tunnel (63) is installed, described Highway Tunnel working tunnel (63) top is equipped with Highway Tunnel air inlet duct (62), and this Highway Tunnel air inlet duct (62) is inclined in Highway Tunnel working tunnel (63), described Highway Tunnel air inlet duct (62) is provided with Highway Tunnel for blower fan (61) in its end away from Highway Tunnel (6), in the position of Highway Tunnel (6) air outlet, Highway Tunnel exhaust air shaft (64) is installed, and this Highway Tunnel exhaust air shaft (64) is positioned on the roof of Highway Tunnel (6), described Highway Tunnel exhaust air shaft (64) is connected with Highway Tunnel air draft adit (65), the position be connected with Highway Tunnel air draft adit (65) described Highway Tunnel exhaust air shaft (64) is provided with Highway Tunnel exhaust blower and Highway Tunnel windbreak, and described Highway Tunnel (6) adjusts hole (7) of ventilating to be communicated with by Highway Tunnel exhaust air shaft (64) and Highway Tunnel air draft adit (65) and tail.
2. Hydropower Station Underground cavern con struction phase ventilation system arrangement according to claim 1, is characterized in that, described tail adjusts the section of ventilation hole (7) to be gateway opening type, and this section is of a size of 9m × 8m.
3. Hydropower Station Underground cavern con struction phase ventilation system arrangement according to claim 1, it is characterized in that, the quantity of described down stream surge-chamber air draft adit (45) is four, and the length of four down stream surge-chamber air draft adits (45) is respectively 50.41m, 51.12m, 52.17m, 53.38m.
4. Hydropower Station Underground cavern con struction phase ventilation system arrangement according to claim 1, it is characterized in that, the height of described main building exhaust air shaft (14) is 37.4m, the diameter of its cross section is 10m, and described main building air draft adit (15) section is of a size of 5m × 5.6m.
5. Hydropower Station Underground cavern con struction phase ventilation system arrangement according to claim 1, it is characterized in that, the height of described transformer chamber exhaust air shaft (24) is 37.4m, the diameter of its cross section is 10m, and described transformer chamber air draft adit (25) section is of a size of 5m × 5.6m.
6. Hydropower Station Underground cavern con struction phase ventilation system arrangement according to claim 1, is characterized in that, the diameter of the cross section of described tailwater tunnel exhaust air shaft (54) is 3.5m.
7. Hydropower Station Underground cavern con struction phase ventilation system arrangement according to claim 1, is characterized in that, the section of described down stream surge-chamber air draft adit (45) is of a size of 3m × 3.5m.
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