CN207919510U - Diversion tunnel blocks arrangement using lock under permanent plug first section joint gate - Google Patents
Diversion tunnel blocks arrangement using lock under permanent plug first section joint gate Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 23
- 239000000411 inducer Substances 0.000 claims 3
- 230000000903 blocking effect Effects 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
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- 230000008676 import Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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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
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Abstract
本实用新型公布了导流隧洞利用永久堵头首段联合闸门下闸封堵布置，它包括多条导流隧洞(9)组成导流隧洞群，所述的导流隧洞群分两批下闸，首批下闸的所述的导流隧洞(9)包括导流隧洞进口段(1)和导流隧洞洞身(1.1)；在所述的导流隧洞进口段(1)设置有低水头封堵闸门(3)，在所述的导流隧洞进口段(1)设置有进水塔(2)，在所述的进水塔(2)的顶部安装有小容量启闭机(4)；所述的永久堵头(8)包括永久堵头上游段(8.1)和下游段(8.2)，所述的永久堵头上游段(8.1)与临时堵头(7)结合布置。本实用新型克服了现有技术中导流隧洞封堵闸门挡水水头高、工程投资大的缺点，具有对现有导流隧洞下闸封堵技术创新的优点。
The utility model discloses that the diversion tunnel is blocked by using the first section of the permanent plug combined with the lower gate of the gate, which includes a plurality of diversion tunnels (9) to form a diversion tunnel group, and the diversion tunnel group is divided into two batches of lower gates The diversion tunnel (9) of the first batch of lower gates includes a diversion tunnel entrance section (1) and a diversion tunnel body (1.1); a low water head is provided at the diversion tunnel entrance section (1). Blocking the gate (3), the inlet section (1) of the diversion tunnel is provided with a water inlet tower (2), and a small-capacity hoist (4) is installed on the top of the water inlet tower (2) The permanent plug (8) includes a permanent plug upstream section (8.1) and a downstream section (8.2), and the permanent plug upstream section (8.1) is arranged in combination with the temporary plug (7). The utility model overcomes the disadvantages of high water head and large engineering investment in the blocking gate of the diversion tunnel in the prior art, and has the advantage of being innovative in the sealing technology of the lower gate of the diversion tunnel.
Description
技术领域technical field
本实用新型涉及到水利水电技术领域，更加具体地是导流隧洞利用永久堵头首段联合闸门下闸封堵布置。The utility model relates to the technical field of water conservancy and hydropower, more specifically, the diversion tunnel is sealed and arranged by using the first section of the permanent plug combined with the lower gate of the gate.
背景技术Background technique
在山区河流修建水电工程，施工期常采用围堰一次拦断河床、导流隧洞导流的施工导流方案。对于径流量较大的河流，常布置2条及以上导流隧洞，形成导流隧洞群，导流隧洞群在完成导流泄水任务后，必须进行下闸封堵以满足蓄水发电要求。导流隧洞群下闸后，为满足施工期水流下泄要求，一般采用导流底孔、坝身中孔或岸边泄洪洞向下游供水。常规的导流隧洞群下闸封堵方案是在导流隧洞进口设置闸门闸室，导流隧洞封堵时，采用启闭机下封堵闸门，利用封堵闸门挡水保护永久堵头施工，永久堵头施工完成后采用永久堵头与大坝联合挡水运行。In the construction of hydropower projects in mountainous rivers, the construction diversion scheme of cofferdams blocking the riverbed at one time and diversion tunnels for diversion is often used during the construction period. For rivers with large runoff, two or more diversion tunnels are often arranged to form a group of diversion tunnels. After the diversion tunnel group completes the task of diversion and discharge, it must be blocked by lower gates to meet the requirements of water storage and power generation. After the diversion tunnel group is lowered, in order to meet the requirements of water discharge during the construction period, the diversion bottom hole, the middle hole of the dam body or the bank spillway are generally used to supply water to the downstream. The conventional diversion tunnel group lower gate closure scheme is to set up a gate chamber at the entrance of the diversion tunnel. When the diversion tunnel is closed, the hoist is used to block the gates, and the permanent plug construction is protected by blocking the water of the gates. After the construction of the permanent plug is completed, the permanent plug and the dam will be used for combined water retaining operation.
导流隧洞群常规下闸封堵方案技术成熟，但存在以下不足之处：The technology of the conventional lower gate plugging scheme for the diversion tunnel group is mature, but there are the following deficiencies:
(1)导流隧洞群封堵闸门挡水水头高、启闭机容量大，封堵闸门及启闭机投资大。导流隧洞群全部下闸后，一般采用导流底孔、坝身中孔或岸边泄洪洞等泄水建筑物下泄施工期水流，采用上述泄水建筑物泄流，上游水位需雍高至一定高程，才能满足水流下泄要求，故封堵闸门挡水水头高，如已建的溪洛渡和龙滩水电站，导流隧洞封堵闸门最大挡水水头分别为100.18m和105.0m，糯扎渡水电站导流隧洞封堵闸门最大挡水水头已达到119.0m，在建的乌东德和白鹤滩水电站，导流隧洞设计封堵闸门最大挡水水头也超过了100m。(1) The blockage gates of the diversion tunnel group have a high retaining head and a large hoist capacity, and the investment in the blockage gates and hoist is large. After all the diversion tunnels are closed, the diversion bottom hole, the middle hole of the dam body or the spillway tunnel on the bank are generally used to discharge the water flow during the construction period. The above-mentioned discharge structures are used to discharge the flow, and the upstream water level needs to be as high as Only a certain height can meet the requirements of water discharge, so the blocking gates have a high retaining head. For example, the Xiluodu and Longtan hydropower stations have been built. The maximum water-retaining head of the diversion tunnel plugging gate has reached 119.0m, and the maximum water-retaining head of the diversion tunnel design plugging gate of the Wudongde and Baihetan hydropower stations under construction has also exceeded 100m.
(2)对于导流隧洞进口地质条件复杂的工程，导流隧洞封堵期挡高水头运行，导流隧洞进口结构存在一定的安全风险。导流隧洞属于临时工程，部分工程进口地质条件复杂，高水头运行时，导流隧洞进口结构挡水安全风险大。(2) For projects with complex geological conditions at the entrance of the diversion tunnel, the diversion tunnel is blocked and operated at a high water head, and there are certain safety risks in the structure of the entrance of the diversion tunnel. The diversion tunnel is a temporary project, and the geological conditions at the entrance of some projects are complex. When the water head is high, the safety risk of the water retaining structure at the entrance of the diversion tunnel is high.
(3)对于布置多条导流隧洞的工程，为减少导流隧洞进口开挖及支护工程量，同岸布置的多条导流隧洞一般采用错距布置，对于进口地质条件复杂的工程，错距布置将导致导流隧洞下闸封堵期进口段存在中隔墩偏压问题，增大了封堵期进口结构风险。(3) For projects with multiple diversion tunnels, in order to reduce the amount of excavation and support work at the entrance of the diversion tunnel, multiple diversion tunnels arranged on the same bank are generally arranged at staggered distances. For projects with complex geological conditions at the entrance, The staggered layout will lead to the problem of partial pier bias in the entrance section of the diversion tunnel during the closure period of the lower gate, which will increase the structural risk of the entrance during the closure period.
发明内容Contents of the invention
本实用新型的目的在于克服上述背景技术的不足之处，而提出导流隧洞利用永久堵头首段联合闸门下闸封堵布置。The purpose of this utility model is to overcome the shortcomings of the above-mentioned background technology, and propose a diversion tunnel using the first section of the permanent plug combined with the lower gate of the gate to seal the arrangement.
本实用新型的目的是通过如下布置方案来实施的：导流隧洞利用永久堵头首段联合闸门下闸封堵布置，它包括多条导流隧洞组成导流隧洞群，所述的导流隧洞群包括两批分别下闸的所述的导流隧洞，首批下闸的所述的导流隧洞包括导流隧洞进口段和导流隧洞洞身；在所述的导流隧洞进口段设置有低水头封堵闸门，在所述的导流隧洞进口段设置有进水塔，在所述的进水塔的顶部安装有小容量启闭机；在所述的导流隧洞洞身的上游段设置有导流隧洞临时堵头，在所述的临时堵头的下游侧设置有永久堵头。The purpose of this utility model is implemented through the following arrangement scheme: the diversion tunnel is sealed and arranged by the first section of the permanent plug combined with the lower gate of the gate, which includes a plurality of diversion tunnels to form a diversion tunnel group, and the diversion tunnel The group includes two batches of diversion tunnels that are respectively lowered. The diversion tunnels of the first batch of lower gates include the entrance section of the diversion tunnel and the body of the diversion tunnel; A low water head blocking gate, a water inlet tower is arranged at the entrance section of the diversion tunnel, and a small-capacity hoist is installed on the top of the water inlet tower; at the upstream section of the diversion tunnel body A temporary plug of the diversion tunnel is provided, and a permanent plug is provided on the downstream side of the temporary plug.
在上述技术方案中：所述的永久堵头位于所述的导流隧洞与大坝主帷幕线的交汇处。In the above technical solution: the permanent plug is located at the intersection of the diversion tunnel and the main curtain line of the dam.
在上述技术方案中：所述的永久堵头包括永久堵头上游段和永久堵头下游段，所述的永久堵头上游段与临时堵头结合布置，且所述的永久堵头上游段兼做临时堵头。In the above technical solution: the permanent plug includes an upstream section of the permanent plug and a downstream section of the permanent plug, the upstream section of the permanent plug is arranged in combination with the temporary plug, and the upstream section of the permanent plug is also Make a temporary plug.
在上述技术方案中：所述的导流隧洞由一条或多条组成。In the above technical solution: the diversion tunnel is composed of one or more tunnels.
在上述技术方案中：在所述的导流隧洞洞内周身设置有衬砌。In the above technical solution: lining is arranged around the inside of the diversion tunnel.
本实用新型具有如下优点：The utility model has the following advantages:
(1)可显著降低首批下闸导流隧洞封堵闸门挡水水头，优化封堵闸门及启闭机系统，节省工程投资(如乌东德水电站首批下闸右岸3#、4#导流隧洞，右岸3#、4#导流隧洞封堵闸门挡水水头由常规方案的108.88m降低至33m左右，封堵闸门由525t/扇降低至325t/扇，启闭机容量由18000kN降低至9000kN，4套封堵闸门共节省金属结构800t，4套启闭机共节省金属结构1000t，封堵闸门及启闭机优化可节省工程投资约4680万元)。(1) It can significantly reduce the water retaining head of the first batch of lower gate diversion tunnels to block the gates, optimize the blockage gates and hoist systems, and save engineering investment (such as the first batch of lower gates on the right bank of Wudongde Hydropower Station # 3, # 4) flow tunnel, 3 # and 4 # diversion tunnels on the right bank, the blocking gate water head is reduced from 108.88m in the conventional scheme to about 33m, the blocking gate is reduced from 525t/fan to 325t/fan, and the hoist capacity is reduced from 18000kN to 9000kN, 4 sets of closed gates save a total of 800t of metal structures, and 4 sets of hoists save a total of 1,000t of metal structures, and the optimization of closed gates and hoists can save project investment of about 46.8 million yuan).
(2)可显著降低首批下闸导流隧洞进口结构及上游洞身段封堵期挡水水头，明显改善进口结构受力条件，提高其挡水安全性(如乌东德水电站首批下闸右岸3#、4#导流隧洞，进口错距70m布置，中隔墩最小厚度为21.5m，地质条件差，为Ⅳ围岩，按常规下闸封堵布置及方法，进口中隔墩设计偏压挡水水头为108.88m，进口结构受力条件较差，安全风险较大；采用本技术方案后，中隔墩设计偏压挡水水头可降低至33.0m左右，降幅达到70％，基本消除进口结构挡水安全风险)。(2) It can significantly reduce the water retaining head of the first batch of lower gate diversion tunnel entrance structures and the upstream tunnel body during the blockage period, significantly improve the stress conditions of the entrance structure, and improve its water retaining safety (such as the first batch of lower gates of Wudongde Hydropower Station) The 3 # and 4 # diversion tunnels on the right bank are arranged with a staggered distance of 70m at the entrance, and the minimum thickness of the septum pier is 21.5m. The pressure-retaining water head is 108.88m, and the stress condition of the entrance structure is relatively poor, and the safety risk is relatively large; after adopting this technical scheme, the design bias-pressure water-retaining head of the septum pier can be reduced to about 33.0m, and the reduction rate reaches 70%, basically eliminating Import structure water retaining safety risk).
(3)可显著降低首批下闸导流隧洞封堵闸门挡水期上游水位，为首批下闸导流隧洞封堵闸门及启闭机回收利用创造条件(如乌东德水电站首批下闸右岸3#、4#导流隧洞，按常规下闸封堵布置及方法，进口封堵闸门挡水水位为920.88m，采用本技术方案后，进口封堵闸门挡水水位降低至845.0m，低于右岸3#、4#导流隧洞进水塔顶部高程为846m，为右岸3#、4#导流隧洞封堵闸门及启闭机回收利用创造了条件)。(3) It can significantly reduce the upstream water level during the water blocking period of the first batch of diversion tunnels for lower gates, and create conditions for the first batch of diversion tunnels for lower gates to seal gates and recycle hoists (such as the first batch of Wudongde Hydropower Station. For diversion tunnels 3 # and 4 # on the right bank of the gate, according to the conventional arrangement and method of closing the gate, the water retaining level of the entrance gate is 920.88m. The top elevation of the water inlet tower of the 3 # and 4 # diversion tunnels on the right bank is 846m, which creates conditions for the closure of the gates of the 3 # and 4 # diversion tunnels on the right bank and the recycling of the hoist).
(4)首批下闸导流隧洞临时堵头与永久堵头结合布置，可减少单独设置临时堵头形成的工程投资(如乌东德水电站首批下闸右岸3#、4#导流隧洞，若3#、4#导流隧洞单独设置临时堵头，则临时堵头将增加砼工程量11524m3)。(4) The combination of temporary plugs and permanent plugs for the first batch of lower gate diversion tunnels can reduce the engineering investment caused by setting temporary plugs alone (for example, the first batch of diversion tunnels on the right bank of the lower gate of Wudongde Hydropower Station 3 # , 4 # , if the 3 # and 4 # diversion tunnels are separately provided with temporary plugs, the temporary plugs will increase the amount of concrete work by 11524m 3 ).
(5)本实用新型可提高导流隧洞群下闸封堵期间的安全性与经济性，有益于进一步优化目前的导流隧洞群下闸封堵布置及方法，是对现有水利水电工程导流隧洞下闸封堵技术的创新。(5) The utility model can improve the safety and economy during the blockage of the lower gate of the diversion tunnel group, and is beneficial to further optimize the current arrangement and method of the lower gate of the diversion tunnel group. It is a guide for existing water conservancy and hydropower projects The innovation of plugging technology for the lower gate of flow tunnel.
附图说明Description of drawings
图1为本实用新型的首批下闸导流隧洞临时堵头结构示意图。Fig. 1 is a structural schematic diagram of the first batch of temporary plugs for diversion tunnels of the lower gate of the present invention.
图2为本实用新型中导流隧洞永久堵头结构示意图。Fig. 2 is a schematic diagram of the permanent plug structure of the diversion tunnel in the utility model.
图3为本实用新型导流隧洞群下闸封堵程序图。Fig. 3 is a block diagram of the lower gate of the diversion tunnel group of the utility model.
图中：导流隧洞进口段1、进水塔2、低水头封堵闸门3、小容量启闭机4、衬砌5、大坝主帷幕线6、临时堵头7、永久堵头8、永久堵头上游段8.1、永久堵头下游段8.2、导流隧洞9。In the figure: entrance section of diversion tunnel 1, water inlet tower 2, low water head blocking gate 3, small-capacity hoist 4, lining 5, dam main curtain line 6, temporary plug 7, permanent plug 8, permanent plug Plug upstream section 8.1, permanent plug downstream section 8.2, diversion tunnel 9.
具体实施方式Detailed ways
下面结合附图详细说明本实用新型的实施情况，但它们并不构成对本实用新型的限定，仅作举例而已，同时通过说明本实用新型的优点将变得更加清楚和容易理解。The implementation of the present utility model will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation of the present utility model, they are only examples, and the advantages of the present utility model will become clearer and easier to understand.
参照图1-2所示：导流隧洞利用永久堵头首段联合闸门下闸封堵布置，它包括多条导流隧洞9组成导流隧洞群，所述的导流隧洞群包括两批分别下闸的所述的导流隧洞9，首批下闸的所述的导流隧洞9包括导流隧洞进口段1和导流隧洞洞身1.1；在所述的导流隧洞进口段1设置有低水头封堵闸门3，在所述的导流隧洞进口段1设置有进水塔2，在所述的进水塔2的顶部安装有小容量启闭机4；在所述的导流隧洞洞身1.1的上游段设置有导流隧洞临时堵头7，在所述的临时堵头7的下游侧设置有永久堵头8。Referring to Fig. 1-2, the diversion tunnel is sealed by the first section of the permanent plug combined with the lower gate of the gate. It includes a plurality of diversion tunnels 9 to form a diversion tunnel group. The diversion tunnel group includes two batches of The diversion tunnel 9 of the lower gate, the diversion tunnel 9 of the first batch of lower gates includes the diversion tunnel entrance section 1 and the diversion tunnel body 1.1; the diversion tunnel entrance section 1 is provided with Low water head blocking gate 3, water inlet tower 2 is set at the entrance section 1 of the diversion tunnel, and a small-capacity hoist 4 is installed on the top of the water inlet tower 2; The upstream section of the tunnel body 1.1 is provided with a temporary plug 7 of the diversion tunnel, and a permanent plug 8 is provided on the downstream side of the temporary plug 7 .
所述的永久堵头8位于所述的导流隧洞9与大坝主帷幕线6的交汇处。The permanent plug 8 is located at the intersection of the diversion tunnel 9 and the main curtain line 6 of the dam.
所述的永久堵头8包括永久堵头上游段8.1和永久堵头下游段8.2，所述的永久堵头上游段8.1与临时堵头7结合布置，且所述的永久堵头上游段8.1兼做临时堵头7。The permanent plug 8 includes a permanent plug upstream section 8.1 and a permanent plug downstream section 8.2, the permanent plug upstream section 8.1 is arranged in combination with the temporary plug 7, and the permanent plug upstream section 8.1 also Make a temporary plug 7.
所述的导流隧洞9由一条或多条组成；在所述的导流隧洞9洞内周身设置有衬砌5。The diversion tunnel 9 is composed of one or more tunnels; a lining 5 is arranged around the inside of the diversion tunnel 9 .
参照图3所示：本实用新型还包括导流隧洞利用永久堵头首段联合闸门下闸封堵的方法，它包括如下步骤：Shown in Fig. 3 with reference to: the utility model also comprises the method that diversion tunnel utilizes permanent plug first section joint gate lower gate to block, and it comprises the following steps:
①、首先下闸首批所述的导流隧洞9，利用第二批未下闸的导流隧洞9下泄施工期上游来水(图中A点为水位线)，采用小容量启闭机4下闸低水头封堵闸门3进行首批下闸的所述的导流隧洞9洞内挡水，创造首批下闸的所述的导流隧洞9洞内干地施工条件；①. Firstly, the diversion tunnels 9 described in the first batch of sluices are released, and the second batch of diversion tunnels 9 that have not been sluices are used to discharge the upstream water during the construction period (point A in the figure is the water level line), and a small-capacity hoist 4 is used. The low water head of the lower gate is used to block the water in the 9 diversion tunnels of the first batch of lower gates to block the water in the gate 3, creating the dry land construction conditions in the 9 diversion tunnels of the first batch of lower gates;
②、在所述的导流隧洞9的导流隧洞洞身1.1进行首批下闸导流隧洞临时堵头7施工；所述的永久堵头8(如图中L)包括永久堵头上游段8.1(图中L1)和永久堵头下游段8.2(图中L2)，所述的永久堵头上游段8.1与设置的临时堵头7结合布置；②, in the diversion tunnel body 1.1 of the diversion tunnel 9, the construction of the first batch of temporary plugs 7 of the lower gate diversion tunnel is carried out; the permanent plug 8 (L in the figure) includes the upstream section of the permanent plug 8.1 (L 1 in the figure) and the downstream section of the permanent plug 8.2 (L 2 in the figure), the upstream section of the permanent plug 8.1 is arranged in combination with the set temporary plug 7;
③、待所述的临时堵头7完工并具备挡水条件后，低水头封堵闸门3与临时堵头7之间充水平压，所述的临时堵头7开始挡水，为下游侧设置的所述的永久堵头下游段8.2干地施工创造条件；③. After the temporary plug 7 is completed and has the water-retaining conditions, the water pressure is filled between the low water head plugging gate 3 and the temporary plug 7, and the temporary plug 7 starts to block the water, which is set for the downstream side. Create conditions for dry construction in the downstream section of the permanent plug described in 8.2;
④、下闸第二批所述的导流隧洞9，待所述的导流隧洞9的上游水位逐渐升高，此时首批下闸的所述的导流隧洞9洞内临时堵头7代替常规的高水头封堵闸门继续运行挡水，第二批所述的导流隧洞9内的永久堵头8在常规高水头封堵闸门保护下进行施工；④, the diversion tunnel 9 described in the second batch of lower gates, when the upstream water level of the diversion tunnel 9 gradually rises, the temporary plug 7 in the diversion tunnel 9 of the first batch of lower gates Instead of the conventional high-head plugging gates to continue running to retain water, the permanent plugs 8 in the diversion tunnels 9 described in the second batch are constructed under the protection of conventional high-head plugging gates;
⑤、待首批下闸的所述的导流隧洞9内的永久堵头8和第二批所述的导流隧洞9内的永久堵头8施工完成并具备挡水条件时，导流隧洞群下闸封堵完成。⑤. When the construction of the permanent plug 8 in the diversion tunnel 9 described in the first batch of gates and the permanent plug 8 in the diversion tunnel 9 described in the second batch are completed and the water retaining conditions are met, the diversion tunnel The blockage of the lower gates of the group is completed.
在步骤⑤中；所述的导流隧洞群包括首批下闸的所述的导流隧洞9内永久堵头8及第二批下闸的导流隧洞9内永久堵头8全部施工完成且具备挡水条件。In step ⑤; said diversion tunnel group includes the permanent plugs 8 in the diversion tunnels 9 of the first batch of lower gates and the permanent plugs 8 in the diversion tunnels 9 of the second batch of lower gates. All construction is completed and With water-retaining conditions.
首批下闸的所述的导流隧洞9为任意选取的一条或多条导流隧洞9；对于导流隧洞进口段地质条件较复杂的一条或多条导流隧洞，可优先选取为首先下闸的首批导流隧洞9。The diversion tunnels 9 described in the first batch of lower gates are randomly selected one or more diversion tunnels 9; for one or more diversion tunnels with complex geological conditions at the entrance section of the diversion tunnel, it can be preferentially selected as the first one or more diversion tunnels. Gate's first diversion tunnels9.
所述的永久堵头上游段8.1兼做临时堵头7，且所述的临时堵头7挡水水头比所述的永久堵头8挡水水头低。The upstream section 8.1 of the permanent plug doubles as the temporary plug 7, and the water blocking head of the temporary plug 7 is lower than that of the permanent plug 8.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859009A (en) * | 2017-11-14 | 2018-03-30 | 长江勘测规划设计研究有限责任公司 | Diversion tunnel utilizes lock closure arrangement and method under permanent plug first section joint gate |
| CN110258458A (en) * | 2019-06-04 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | Extra-high rock-fill dams diversion tunnel group structure |
| CN111335262A (en) * | 2020-04-15 | 2020-06-26 | 国电金沙江旭龙水电开发有限公司 | Hydraulic tunnel plugging body and construction method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859009A (en) * | 2017-11-14 | 2018-03-30 | 长江勘测规划设计研究有限责任公司 | Diversion tunnel utilizes lock closure arrangement and method under permanent plug first section joint gate |
| CN110258458A (en) * | 2019-06-04 | 2019-09-20 | 中国电建集团成都勘测设计研究院有限公司 | Extra-high rock-fill dams diversion tunnel group structure |
| CN111335262A (en) * | 2020-04-15 | 2020-06-26 | 国电金沙江旭龙水电开发有限公司 | Hydraulic tunnel plugging body and construction method |
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