CN108035318B - Construction method of dam body drainage structure of homogeneous earth dam - Google Patents
Construction method of dam body drainage structure of homogeneous earth dam Download PDFInfo
- Publication number
- CN108035318B CN108035318B CN201711453793.2A CN201711453793A CN108035318B CN 108035318 B CN108035318 B CN 108035318B CN 201711453793 A CN201711453793 A CN 201711453793A CN 108035318 B CN108035318 B CN 108035318B
- Authority
- CN
- China
- Prior art keywords
- drainage
- dam
- horizontal
- vertical
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000010276 construction Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 19
- 239000011368 organic material Substances 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims 1
- 238000002791 soaking Methods 0.000 abstract description 11
- 230000008595 infiltration Effects 0.000 abstract description 3
- 238000001764 infiltration Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 32
- 230000035699 permeability Effects 0.000 description 9
- 239000004927 clay Substances 0.000 description 7
- 239000002689 soil Substances 0.000 description 6
- 238000005056 compaction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000003204 osmotic effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
- E02B7/04—Dams across valleys
- E02B7/06—Earth-fill dams; Rock-fill dams
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Revetment (AREA)
Abstract
本发明均质土坝的坝体排水结构的施工方法，排水结构由依次连接的竖向排水体、至少一条水平排水垫层、排水棱体组成，在均质土坝坝体内坝基防渗帷幕下游侧，沿顺坝轴线方向形成一道水平宽度为1m～3m的竖向排水体疏排渗透水至竖向排水体底部，在下游端设置排水棱体，在竖向排水体和下游排水棱体间设置至少一条水平排水垫层、作为竖向排水体和排水棱体之间的联系通道，本发明方法能降低坝体浸润线高度、减小渗透压力,增加坝体下游坝坡的抗滑稳定性，从而适当增大下游坝坡的坡度，减小填筑工程量，成本较低，施工方便，而且能显著降低浸润满足规范要求并且能节约工程造价，缩小施工周期。
The construction method of the dam body drainage structure of the homogeneous earth dam of the present invention, the drainage structure is composed of a vertical drainage body connected in sequence, at least one horizontal drainage cushion, and a drainage prism, and is downstream of the dam foundation anti-seepage curtain in the homogeneous earth dam body On the side of the dam axis, a vertical drainage body with a horizontal width of 1m to 3m is formed to drain the seepage water to the bottom of the vertical drainage body, and a drainage prism is set at the downstream end. At least one horizontal drainage cushion is set as the connection channel between the vertical drainage body and the drainage prism, the method of the present invention can reduce the height of the dam body's soaking line, reduce the seepage pressure, and increase the anti-sliding stability of the dam slope downstream of the dam body , so as to appropriately increase the slope of the downstream dam slope, reduce the amount of filling work, lower the cost, facilitate construction, and can significantly reduce infiltration to meet the specification requirements and save project cost and shorten the construction period.
Description
技术领域technical field
本发明涉及的是一种用于水利水电、采矿等行业中的均质土坝的排水结构的施工方法。The invention relates to a construction method for a drainage structure of a homogeneous earth dam used in industries such as water conservancy, hydropower, and mining.
背景技术Background technique
均质土坝是一种古老的水工建筑物，其断面不分防渗体和坝壳，基本上是由相对较均匀的、渗透系数较小的单一材料填筑而成。整个坝体就是防渗体，其结构与坝基、岸坡及混凝土建筑物的接触渗径比较长，可简化甚至取消防渗处理。它具有填筑材料单一，工序简单，各工序间干扰少、对地质条件要求低，造价低等特点，在条件满足时常是工程设计的首选方案。但因土料填筑受降雨影响很大，使这种坝型在一些多雨地区的使用受到限制。特别是建在弱透水坝基上的均质土坝，如不采取适宜的坝体排水措施，坝体内浸润线较高，如果浸润线与坡面相交，坝坡的稳定系数约降低50%，对坝坡稳定极为不利。为保证坝坡稳定，则必须减小坡度，从而造成填筑工程量增加。Homogeneous earth dam is an ancient hydraulic structure. Its cross-section is basically filled with a single material that is relatively uniform and has a small permeability coefficient, regardless of the anti-seepage body and the dam shell. The entire dam body is an anti-seepage body, and its structure has a relatively long contact seepage diameter with the dam foundation, bank slope and concrete buildings, which can simplify or even cancel anti-seepage treatment. It has the characteristics of single filling material, simple process, less interference between processes, low requirements on geological conditions, and low cost. It is often the first choice for engineering design when the conditions are met. However, because soil filling is greatly affected by rainfall, the use of this dam type in some rainy areas is limited. Especially for homogeneous earth dams built on weakly permeable dam foundations, if proper dam body drainage measures are not taken, the soaking line in the dam body will be relatively high. If the soaking line intersects with the slope, the stability coefficient of the dam slope will decrease by about 50%. The stability of the dam slope is extremely unfavorable. In order to ensure the stability of the dam slope, the slope must be reduced, resulting in an increase in the amount of filling work.
均质土坝填筑是采取分区分层方式。碾压激振力直接作用在每一填筑层表面，其上半部分压实度较高，并在表面形成致密光滑的表层，而下半部分压实度则相对较低，层间存在水平向的低压实度区，导致坝体为软硬（相对）相间的不均匀结构，因此其水平向透水性大于竖直向透水性。The filling of homogeneous earth dam adopts partition and layering method. The exciting force of the rolling compaction acts directly on the surface of each filling layer. The upper part has a higher degree of compaction and forms a dense and smooth surface layer on the surface, while the lower part has a relatively lower degree of compaction, and there are horizontal layers between layers. The low compaction area in the direction leads to the uneven structure of the dam body with soft and hard (relatively) alternating, so its horizontal permeability is greater than its vertical permeability.
通常均质土坝采用棱体（坡面）排水和褥垫排水相结合的排水结构。当坝体水平和垂直向具有相同透水性时，褥垫排水能有效降低坝体浸润线，这种结构强化的是水平排水褥垫的作用。鉴于填土经碾压后沿层间的水平向透水性常比垂直向大，虽设褥垫排水浸润线仍不能迅速下降，不能保证下游坝体（坡）处于干燥状态（浸润线与底部褥垫或棱体相交）。为降低坝体浸润线高度、减小渗透压力,增加坝体下游坝坡的抗滑稳定性，从而适当增大下游坝坡的坡度，减小填筑工程，就需要寻求一种不但成本较低，施工方便，而且与棱体排水和褥垫排水相比能显著降低坝体浸润线的均质土坝排水结构。Usually homogeneous earth dams adopt a drainage structure combining prism (slope) drainage and mattress drainage. When the dam body has the same water permeability horizontally and vertically, the drainage of the mattress can effectively reduce the soaking line of the dam body, and this structure strengthens the function of the horizontal drainage mattress. In view of the fact that after the filling is rolled, the water permeability along the horizontal direction between the layers is usually greater than that in the vertical direction, even if the drainage soaking line of the mattress is set, it still cannot drop rapidly, and it cannot ensure that the downstream dam body (slope) is in a dry state (the soaking line and the bottom mattress pad or prism intersection). In order to reduce the height of the dam wetting line, reduce the seepage pressure, increase the anti-sliding stability of the dam slope downstream of the dam body, thereby appropriately increasing the slope of the downstream dam slope and reducing the filling works, it is necessary to find a low-cost , construction is convenient, and compared with prism drainage and mattress drainage, it is a homogeneous earth dam drainage structure that can significantly reduce the soaking line of the dam body.
发明内容Contents of the invention
本发明的目的是为了提供一种能降低坝体浸润线高度、减小渗透压力,增加坝体下游坝坡的抗滑稳定性，从而适当增大下游坝坡的坡度，减小填筑工程量，成本低，施工方便，而且能具有显著降低浸润线的均质土坝排水结构从而满足规范要求并且能节约工程造价，缩小施工周期的均质土坝的坝体排水结构的施工方法。The purpose of the present invention is to provide a method that can reduce the height of the dam body's soaking line, reduce the osmotic pressure, and increase the anti-sliding stability of the dam slope downstream of the dam body, thereby appropriately increasing the slope of the downstream dam slope and reducing the amount of filling work. , low cost, convenient construction, and can have a homogeneous earth dam drainage structure that significantly reduces the soaking line to meet the specification requirements and can save engineering cost and shorten the construction period.
本发明目的是这样来实现的：The purpose of the invention is achieved in this way:
本发明均质土坝的坝体排水结构的施工方法，坝体排水结构由依次连接的竖向排水体、至少一条水平排水垫层（水平排水体）、排水棱体组成，施工方法是在均质土坝坝体内坝基防渗帷幕下游侧、采用高渗透系数填筑材料如满足级配要求的砂、碎石或能够导排水的有机材料沿顺坝轴线方向形成一道水平宽度为1m～3m的竖向排水体、以疏排渗透水至竖向排水体底部，在下游端设置排水棱体，在竖向排水体和下游排水棱体间设置至少一条水平排水垫层，以作为竖向排水体和排水棱体之间的联系通道，保证渗透水顺利排至下游。The construction method of the dam body drainage structure of the homogeneous earth dam in the present invention, the dam body drainage structure is composed of a vertical drainage body, at least one horizontal drainage cushion (horizontal drainage body) and a drainage prism connected in sequence, and the construction method is in the uniform On the downstream side of the anti-seepage curtain of the dam foundation in the earth dam body, a high-permeability filling material such as sand, gravel or organic materials that can conduct water is used to form a horizontal width of 1m to 3m along the direction of the dam axis. Vertical drainage body, to drain infiltrated water to the bottom of the vertical drainage body, set a drainage prism at the downstream end, and set at least one horizontal drainage cushion between the vertical drainage body and the downstream drainage prism, as a vertical drainage body The communication channel between the drainage prism and the drainage prism ensures the smooth discharge of permeate water to the downstream.
上述的竖向排水体由竖向排水层、分别位于竖向排滤层上、下两侧的竖向反滤层组成，水平排水垫层由水平排水层、分别位于水平排水层上、下两侧的水平反滤层组成，排水棱体由排水反滤层和碾压后堆石组成。The above-mentioned vertical drainage body is composed of a vertical drainage layer and a vertical reverse filter layer respectively located on the upper and lower sides of the vertical drainage layer. The horizontal filter layer on the side is formed, and the drainage prism is composed of the drainage filter layer and the rolled rockfill.
上述的水平排水垫层为二条，在竖向排水和排水棱体之间，设置两条排水通道（排水褥垫），保证坝体渗水能够通畅排往下游。排水结构变更以后，下游三级坝坡从下到上分为：1:2.5、1:2.5、1:2.0。相应的排水棱体的高度也显著降低。There are two horizontal drainage cushions mentioned above, and two drainage channels (drainage mattresses) are set between the vertical drainage and the drainage prism to ensure that the seepage of the dam body can be smoothly discharged downstream. After the drainage structure is changed, the downstream three-level dam slope is divided into: 1:2.5, 1:2.5, 1:2.0 from bottom to top. The height of the corresponding drainage prisms is also significantly reduced.
在竖向与水平向渗透性不同的均质土坝中，现有强化褥垫排水（水平设置）的结构不能满足要求，需要强化竖向排水体的作用，水平排水垫层仅为排水通道。通过计算比较均质坝和黏土心墙堆石坝渗流场发现在黏土心墙堆石坝渗流场中，流线穿过心墙进入堆石区后迅速降低，在很短的水平距离内降至下游水位高程。其主要原因是因堆石区渗透系数较大（约1～5×10-2cm/s,约为黏土心墙的5000～10000倍）。本发明能在坝体内特定位置设置一层一定厚度的大渗透系数的填料区（或其他能够导排水的有机材料）形成自上而下的竖向排水通道，将渗流水导排至下游，在保证排水通道设置处顶部高程高于相应断面的浸润线和排水通道的排水能力大于整个坝体的渗流量时，就能保证排水通道下游侧坝体处于较干燥状态，从而实现本发明。In homogeneous earth dams with different vertical and horizontal permeability, the existing structure of strengthening mattress drainage (horizontal setting) cannot meet the requirements, and the function of vertical drainage body needs to be strengthened, and the horizontal drainage cushion is only a drainage channel. Comparing the seepage fields of homogeneous dams and clay core rockfill dams through calculation, it is found that in the clay core rockfill dam, the flow line passes through the core wall and enters the rockfill area, and then decreases rapidly, and falls to within a short horizontal distance. Downstream water level elevation. The main reason is that the permeability coefficient in the rockfill area is relatively large (about 1 to 5×10 -2 cm/s, about 5000 to 10000 times that of the clay core wall). The invention can set a layer of filler area with a certain thickness and large permeability coefficient (or other organic materials capable of guiding water) at a specific position in the dam body to form a vertical drainage channel from top to bottom, and guide the seepage water to the downstream. When ensuring that the top elevation of the drainage channel is higher than the infiltration line of the corresponding section and the drainage capacity of the drainage channel is greater than the seepage volume of the entire dam body, the dam body on the downstream side of the drainage channel can be guaranteed to be in a relatively dry state, thereby realizing the present invention.
本发明方法能降低坝体浸润线高度、减小渗透压力,增加坝体下游坝坡的抗滑稳定性，从而适当增大下游坝坡的坡度，减小填筑工程量，成本较低，施工方便，而且能具有显著降低浸润线的均质土坝排水结构从而满足规范要求并且能节约工程造价，缩小施工周期的均质土坝。The method of the invention can reduce the height of the dam body soaking line, reduce the osmotic pressure, increase the anti-sliding stability of the dam slope downstream of the dam body, thereby appropriately increasing the slope of the downstream dam slope, reducing the amount of filling engineering, and the cost is low, and the construction It is convenient, and can have a homogeneous earth dam drainage structure that significantly reduces the soaking line, so as to meet the specification requirements, save engineering cost, and shorten the construction period.
附图说明Description of drawings
图1为本发明坝体排水结构平面示意图。Fig. 1 is a schematic plan view of the drainage structure of the dam body of the present invention.
图2为本发明坝体排水结构剖面图。Fig. 2 is a sectional view of the drainage structure of the dam body of the present invention.
图3为均质土坝排水路径模型图。Figure 3 is a model diagram of the drainage path of a homogeneous earth dam.
具体实施方式Detailed ways
参见图1、～图3，本实施例均质土坝的坝体排水结构的施工方法，坝体排水结构由依次连接的竖向排水体1、二条水平排水垫层2、排水棱体3组成。施工方法是在均质土坝坝体内坝基防渗帷幕下游侧，高渗透系数性填筑材料如满足级配要求的砂、碎石（或能够导排水的有机材料）沿顺坝轴线方向形成一道水平宽度为2的竖向排水体1以疏排渗透水至竖向排水体底部。在下游端设置排水棱体3.在竖向排水体和下游排水棱体间设置二条水平排水垫层2，作为竖向排水体和排水棱体之间的联系通道以保证渗透水顺利排至下游。Referring to Figures 1 and 3, the construction method of the dam body drainage structure of the homogeneous earth dam in this embodiment, the dam body drainage structure is composed of a vertical drainage body 1, two horizontal drainage cushions 2, and a drainage prism 3 connected in sequence . The construction method is that on the downstream side of the dam foundation anti-seepage curtain in the homogeneous earth dam body, high-permeability filling materials such as sand and gravel (or organic materials that can conduct water) that meet the gradation requirements form a line along the axis of the dam. The vertical drainage body 1 with a horizontal width of 2 is used to drain seepage water to the bottom of the vertical drainage body. Set drainage prism 3 at the downstream end. Set two horizontal drainage cushions 2 between the vertical drainage body and the downstream drainage prism, as a communication channel between the vertical drainage body and the drainage prism to ensure the smooth discharge of seepage water to the downstream .
竖向排水体由满足反滤和通水量要求的砂石材料或有机土工材料（或为二者结合）构成，由竖向反滤层1—1、竖向排水层1—2两个部分组成部分。其主要作用是阻断渗透路径，改变渗流方向，并利用自身高渗透性将渗透水从坝体上部疏排至排水体底部。其中竖向反滤层保证与竖向排水提相邻的黏土颗粒不流失。保证排水层持续有效；竖向排水层作用为疏排渗透水。The vertical drainage body is composed of sandstone materials or organic geotechnical materials (or a combination of the two) that meet the requirements of reverse filtration and water flow, and consists of two parts: vertical reverse filter layer 1-1 and vertical drainage layer 1-2 part. Its main function is to block the seepage path, change the seepage direction, and use its high permeability to drain the seepage water from the upper part of the dam body to the bottom of the drainage body. Among them, the vertical filter layer ensures that the clay particles adjacent to the vertical drainage will not be lost. Ensure the continuous effectiveness of the drainage layer; the function of the vertical drainage layer is to drain seepage water.
水平排水垫层由满足反滤和通水量要求的砂石组成，连接竖向排水体和排水棱体。其中作用是将渗透岁由竖向排水体底部排至河道下游。其分为水平反滤层2—1和水平排水层2—2两部分，作用同竖向反滤层和竖向排水层。The horizontal drainage cushion is composed of sand and gravel that meet the requirements of reverse filtration and water flow, and connects the vertical drainage body and the drainage prism. The function is to discharge the seepage from the bottom of the vertical drainage body to the downstream of the river. It is divided into two parts, the horizontal reverse filter layer 2-1 and the horizontal drainage layer 2-2, which have the same functions as the vertical reverse filter layer and the vertical drainage layer.
排水棱体由反滤层3—1和碾压后堆石3—2组成，其主要作用有两个，一是排除坝体渗水；二是保护下游坡面。The drainage prism is composed of reverse filter layer 3-1 and rolled rockfill 3-2. It has two main functions, one is to eliminate water seepage from the dam body; the other is to protect the downstream slope.
与强化水平排水褥垫的作用的褥垫排水结构不同，本发明均质土坝坝体排水结构强化竖向排水体的作用，水平排水垫层仅为排水通道。其必须满足以下条件：一是排水体竖向和水平向通水量能够满足大坝渗流要求；二是排水体顶面高程必须高于断面处浸润线高度，保证渗流水能够进入竖向排水体中；三是排水体必须设置反滤保护层，保证排水体长久有效；四是竖向疏排体必须与底部的水平排水垫层有效联通，保证排水顺畅。Different from the mattress drainage structure that strengthens the function of the horizontal drainage mattress, the drainage structure of the homogeneous earth dam body of the present invention strengthens the function of the vertical drainage body, and the horizontal drainage cushion is only a drainage channel. It must meet the following conditions: First, the vertical and horizontal water flow of the drainage body can meet the seepage requirements of the dam; second, the top surface elevation of the drainage body must be higher than the height of the infiltration line at the section to ensure that seepage water can enter the vertical drainage body ; The third is that the drainage body must be equipped with a reverse filter protection layer to ensure the long-term effectiveness of the drainage body; the fourth is that the vertical drainage body must be effectively connected with the horizontal drainage cushion at the bottom to ensure smooth drainage.
本实施例中均质土坝坝体排水结构首先填筑最底部的水平排水垫层；排水棱体和竖向排水体与整个大坝同时分层碾压填筑。实施方法如下:In this embodiment, the drainage structure of the homogeneous earth dam body is first filled with the bottom horizontal drainage cushion; the drainage prism and the vertical drainage body are layered and compacted simultaneously with the entire dam. The implementation method is as follows:
1、水平排水垫层：1. Horizontal drainage cushion:
水平排水垫层按水平排水结构组成，首先分层施工底部水平滤层。其单层填筑厚度、范围根据试验结果和现场具体情况确定，推平碾压后进行试验检测，满足要求再进行上一层施工。水平反滤层按照设计施工完成再施工水平排水层，然后施工水平排水层顶部的水平反滤层。整个水平排水垫层施工完成才能填筑其顶部的黏土填料。The horizontal drainage cushion is composed of a horizontal drainage structure, and the bottom horizontal filter layer is firstly constructed layer by layer. The thickness and scope of the single-layer filling shall be determined according to the test results and the specific conditions on the site, and the test shall be carried out after flattening and rolling, and the construction of the upper layer shall be carried out after meeting the requirements. The horizontal anti-filter layer is constructed according to the design and then the horizontal drainage layer is constructed, and then the horizontal anti-filter layer on the top of the horizontal drainage layer is constructed. The clay fill on top of the horizontal drainage cushion can only be filled after the construction of the entire horizontal drainage cushion.
2、排水棱体：2. Drainage prism:
排水棱体总体上随水平排水垫层和黏土料分层施工。在每一分层中，首先填筑排水棱体，然后填筑反滤（过渡）料，再填筑土料。要求土料、反滤（过渡）料同时碾压。施工中注意各种填料的区分和结构尺寸，避免混合。The drainage prism is generally constructed in layers along with the horizontal drainage cushion and clay materials. In each layer, first fill the drainage prism, then fill the reverse filter (transition) material, and then fill the earth material. It is required that the soil material and reverse filter (transition) material be rolled at the same time. Pay attention to the distinction and structural size of various fillers during construction, and avoid mixing.
3、竖向排水体：3. Vertical drainage body:
竖向排水体与黏土一起分层填筑。首先填筑上游侧土料，然后填筑与上游侧土料相邻的反滤料，依次是排水体和下游的反滤料，最后填筑与竖向排水体下游侧反滤料相邻的土料。排水体与土料同时碾压。与岸坡相邻的竖向排水体的填筑前，岸坡的处理必须满足要求，并保证碾压质量。Vertical drainage bodies are filled in layers together with clay. Fill the upstream side soil material first, then fill the filter material adjacent to the upstream side soil material, followed by the drainage body and the downstream filter material, and finally fill the filter material adjacent to the downstream side of the vertical drainage body Soil material. The drainage body and the soil material are rolled simultaneously. Before the filling of the vertical drainage body adjacent to the bank slope, the treatment of the bank slope must meet the requirements and ensure the rolling quality.
本均质土坝坝体排水结构强化竖向排水体的作用，水平排水垫层仅为排水通道。其工作原理是竖向排水体阻断渗透路径，将渗透水疏导至竖向排水体底部，并通过水平排水垫层排至下游河道。有结构简单，施工方便，不但能加快施工进度而且能够节约施工成本、降低工程造价的特点。The drainage structure of the homogeneous earth dam strengthens the function of the vertical drainage body, and the horizontal drainage cushion is only the drainage channel. Its working principle is that the vertical drainage body blocks the seepage path, guides the seepage water to the bottom of the vertical drainage body, and discharges it to the downstream channel through the horizontal drainage cushion. It has the characteristics of simple structure and convenient construction, which can not only speed up the construction progress but also save construction cost and reduce project cost.
对比排水结构变更前后的各种填料工程量，结构变更以后产生的经济效益比较明显。各种填料工程量对比见表1。Comparing the various filling quantities before and after the change of the drainage structure, the economic benefits after the change of the structure are more obvious. The comparison of various filler engineering quantities is shown in Table 1.
表1：Table 1:
上述实施例是对本发明的上述内容作进一步的说明，但不应将此理解为本发明上述主题的范围仅限于上述实施例。凡基于上述内容所实现的技术均属于本发明的范围。The above-mentioned embodiment is to further illustrate the above-mentioned content of the present invention, but it should not be understood that the scope of the above-mentioned subject of the present invention is limited to the above-mentioned embodiment. All technologies implemented based on the above content belong to the scope of the present invention.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711453793.2A CN108035318B (en) | 2017-12-28 | 2017-12-28 | Construction method of dam body drainage structure of homogeneous earth dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711453793.2A CN108035318B (en) | 2017-12-28 | 2017-12-28 | Construction method of dam body drainage structure of homogeneous earth dam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108035318A CN108035318A (en) | 2018-05-15 |
| CN108035318B true CN108035318B (en) | 2019-12-13 |
Family
ID=62097746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711453793.2A Active CN108035318B (en) | 2017-12-28 | 2017-12-28 | Construction method of dam body drainage structure of homogeneous earth dam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108035318B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109750655A (en) * | 2018-12-19 | 2019-05-14 | 中国水利水电第五工程局有限公司 | A kind of homogeneous earth dam axis of dam downstream vertical row water layer and construction method |
| CN112252273B (en) * | 2020-10-28 | 2021-12-21 | 中国有色金属工业西安勘察设计研究院有限公司 | Method for preventing and treating tailing sand leakage in tailing pond dam body |
| CN116065539A (en) * | 2023-02-14 | 2023-05-05 | 中国电建集团西北勘测设计研究院有限公司 | A dam body drainage structure with a 100-meter-level homogeneous earth dam height and downstream water level |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587536A (en) * | 2004-07-15 | 2005-03-02 | 国家电力公司华东勘测设计研究院 | Back ward water draining system of face plate rock-fill dam dam body and its construction method |
| CN202081412U (en) * | 2011-05-31 | 2011-12-21 | 内蒙古电力勘测设计院 | L-shaped drainage structure of ash yard |
| CN202323880U (en) * | 2011-11-25 | 2012-07-11 | 中国水电顾问集团贵阳勘测设计研究院 | Reverse osmosis drainage system of concrete face rockfill dam in construction period |
| CN103132488A (en) * | 2011-11-25 | 2013-06-05 | 中国水电顾问集团贵阳勘测设计研究院 | Reverse osmosis water processing method and reverse osmosis drainage system in construction period of concrete faced rockfill dam |
| CN104110012A (en) * | 2014-07-28 | 2014-10-22 | 中国电建集团西北勘测设计研究院有限公司 | Low-permeability rock-fill material concrete panel rock-fill dam |
| CN204023520U (en) * | 2014-07-07 | 2014-12-17 | 中国电建集团贵阳勘测设计研究院有限公司 | Dam body drainage structure for improving shock resistance of rock-fill dam |
| CN204982789U (en) * | 2015-05-13 | 2016-01-20 | 中国电建集团华东勘测设计研究院有限公司 | A dam body prevention of seepage drainage system for roller compacted concrete dam |
-
2017
- 2017-12-28 CN CN201711453793.2A patent/CN108035318B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587536A (en) * | 2004-07-15 | 2005-03-02 | 国家电力公司华东勘测设计研究院 | Back ward water draining system of face plate rock-fill dam dam body and its construction method |
| CN202081412U (en) * | 2011-05-31 | 2011-12-21 | 内蒙古电力勘测设计院 | L-shaped drainage structure of ash yard |
| CN202323880U (en) * | 2011-11-25 | 2012-07-11 | 中国水电顾问集团贵阳勘测设计研究院 | Reverse osmosis drainage system of concrete face rockfill dam in construction period |
| CN103132488A (en) * | 2011-11-25 | 2013-06-05 | 中国水电顾问集团贵阳勘测设计研究院 | Reverse osmosis water processing method and reverse osmosis drainage system in construction period of concrete faced rockfill dam |
| CN204023520U (en) * | 2014-07-07 | 2014-12-17 | 中国电建集团贵阳勘测设计研究院有限公司 | Dam body drainage structure for improving shock resistance of rock-fill dam |
| CN104110012A (en) * | 2014-07-28 | 2014-10-22 | 中国电建集团西北勘测设计研究院有限公司 | Low-permeability rock-fill material concrete panel rock-fill dam |
| CN204982789U (en) * | 2015-05-13 | 2016-01-20 | 中国电建集团华东勘测设计研究院有限公司 | A dam body prevention of seepage drainage system for roller compacted concrete dam |
Non-Patent Citations (1)
| Title |
|---|
| 特高面板砂砾石坝结构安全性论证;陈生水等;《岩土工程学报》;20171130;第39卷(第11期);第1950页右栏及图1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108035318A (en) | 2018-05-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108035318B (en) | Construction method of dam body drainage structure of homogeneous earth dam | |
| CN103615042B (en) | Network type seepage discharging device in transverse direction, longitudinal direction and vertical direction | |
| CN104846774B (en) | Fast-storage and slow-release sponge embankment structure of urban small watershed | |
| CN212052626U (en) | Concrete panel rock-fill dam with multiple anti-seepage structure | |
| CN204898614U (en) | A flow blocking dam for protection of mud -rock flow river course | |
| CN103205952A (en) | Method for filling dam by combining sludge-filled bags and vacuum preloading | |
| CN113502836A (en) | Drainage geogrid and supporting structure and method | |
| CN212477620U (en) | Structure for building gravity dam on deep and thick covering layer | |
| CN216275518U (en) | Reinforcing and reinforcing structure of clay core rockfill dam | |
| CN114892607A (en) | A prefabricated dam core wall structure and its construction method | |
| CN111910586B (en) | Double-layer geomembrane core wall rockfill dam structure and construction method | |
| CN203007961U (en) | Gabion cofferdam structure | |
| CN205604186U (en) | Clay core morals and manners material dam | |
| CN217630028U (en) | Core wall composite geomembrane earth-rock cofferdam structure | |
| CN110158618A (en) | A kind of novel backfill structure and earth-filling method applied to open cut tunnel hole top | |
| RU2377363C1 (en) | Soil non-homogenuous fill dam | |
| CN210482215U (en) | Anti-seepage drainage and exhaust structure suitable for flat reservoir basin | |
| CN212896195U (en) | Double-layer geomembrane core wall rock-fill dam structure | |
| CN112921904B (en) | A clay initial dam structure for upstream formula tailing storehouse | |
| CN213709417U (en) | Dam body drainage structure of water conservancy homogeneity earth dam | |
| CN212248105U (en) | Combined auxiliary dam for tailing pond | |
| CN112012170B (en) | A combined tailings pond auxiliary dam and construction method thereof | |
| CN210368867U (en) | Superimposed structure of homogeneity earth dam and rock-fill dam | |
| CN203904937U (en) | Concrete face rockfill dam downstream dam-rear drainage belt arrangement structure | |
| JP2003105746A (en) | Design method for in-soil drainage layer and in-soil drainage structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |