C. Vibration strike: it is used in drilling and casing with loosen sand, cobble stone and gravel layer etc.
振动击打：用于松散的砂、卵石、碎石地层的钻进及下套管等。
There have three decisive questions need to solve while drilling in sand gravel layer. The first question is drilling footage.
在砂卵石地层中勘察钻探时，要解决三个关键性的问题：一是钻进进尺问题；
The invert siphon project in Zhongyishui lies in the sand and gravel layer, with rich groundwater and high seepage coefficient.
中易水倒虹吸工程建筑物所处地层为砂卵层，地下水丰富，渗透系数大。
Thermal characteristics of the gravel layer in the system heated by hot water natural circulation with solar collector were studied.
对由太阳能集热器热水自然循环加热的太阳能热转换系统卵石层的热特性进行了实验研究。
Composite sealing layer is a combination of connected gravel layer, gravel layer sealing systems, and Micro-surfacing (Slurry seal) system.
复合封层是碎石联结层、碎石封层系统和微表处(稀浆封层)系统的结合。
The infiltration protection wall of deepest of over 80 meters at Xiaolangdi dam is the key project to control infiltration in the sand and gravel layer at dam base.
小浪底主坝防渗墙是坝基砂砾石覆盖层渗流控制的关键工程，最深达80多米。
In Nanning basin, the circular-gravel layer is an ideal bearing stratum of piles, because of it's homogeneous particle composition, compact cohesion and continuous distribution.
南宁盆地圆砾颗粒组成均匀，胶结紧密，分布连续，是较理想的桩端持力层。
But for triple stratum foundation, if the top sand layer is relatively thin, piping is vertical. The damage zones are large in width and depth that expand to the sand layer and gravel layer.
当三层堤基浅砂层较薄时，将发生深层管涌破坏，管涌破坏区涉及浅砂层及下部砂砾石层，其宽度和深度较双层堤基大，出口涌砂量也较多。
Lay a 2-inch layer of pebble-sized gravel around the plants. Choose a gravel color to complement your home or the flowers in your desert garden.
在植物周围铺上2英尺厚的砾石。砾石的颜色需和您的房屋以及植物本身的颜色相协调。
It is wise to start infilling with a layer of gravel for drainage.
先铺上一层利于排水的砾石是个明智的做法。
Over the gravel so that the sun was scorching hot, the ground as if floating a layer of burning heat wave.
遍布的砾石让太阳晒得滚烫，地面上悬浮着一层仿佛燃烧着的热浪。
For the ground floor, the flat concrete roof has a layer of gravel to prevent heat from entering the building.
对于一层来说，混凝土平屋顶有砾石层防止热量进入建筑。
Gravel strata is a kind of typical instable layer in drilling engineering.
卵砾石地层是钻探工程中常见的一种典型的不稳定地层。
A layer of special fabric covers the gravel.
一层专用的织物覆盖着砂砾。
A group of Quaternary gyttjor are discovered in Rimaqu basin in the Yellow River source area which formed the first terrace foundation, included gravel aleurite, aleurite and clay layer.
在黄河源区支流日玛曲河谷发现第四纪湖相沉积，以含砾粉砂、粉砂、粘土互层组合为特征，形成河流的第一阶地基座。
After the trampling, a new layer of reeds and gravel was added.
踩实后，再铺一层新的芦苇和砾石。
In general use a soil-based compost placed over a generous layer of drainage material such as earthenware crocks, pebbles or gravel.
通常在盆栽的底部铺上丰富的排水材料，像陶器碎片、沙砾等，然后在上面铺上土壤。
The cushion layer for the dam is constructed with the material prepared mainly with natural sandy gravel and mixed with proper amount of pebble and coarse sand.
大坝垫层料采用以天然砂砾料为主、掺入小石和粗砂以调整级配的方式生产。
For diluvial soils, KBD distribution was probably related with soil texture. Soils with high content of gravel in bottom layer are mostly concentrated on KBD affected area.
就洪积土壤来说，其与大骨节病分布的关系似乎与土壤质地有一定的联系，底部砾石含量高的土壤多集中在大骨节病地区。
As the overall quality and rigidity of the structure with gravel drainage layer increased, the stability of the structure increased.
碎石排水层加大了结构与碎石的整体质量和刚度，增加了结构的稳定性。
It can remove the gravel covered surface impurities, while destruction of water vapor coated layer of sand to facilitate the dehydration, the role played efficient washing sand cleaning.
它能除去覆盖砂石表面的杂质，同时破坏包覆砂粒的水汽层，以利于脱水，起到高效洗砂清洗作用。
The foundation of the dam for Dalong reservoir consists of the layer of medium-coarse sand with gravel, so it is difficult to be penetrated even by the high-power vibrator.
大隆水库大坝坝基为含卵砾中粗砂层，即使大功率振冲器也难以贯入。
The lithologic substratum is made of gravel, sand and clay with a layer of loess.
岩性底层是由砾石，沙质土，粘土与黄土层组成。
Then a layer of gravel and a little water was applied and trampled solid.
然后铺一层砾石并洒上少许水用来踩实。
The invention relates to a rubber powder modified asphalt gravel bridge deck waterproof layer and a construction method thereof.
本发明涉及一种橡胶粉改性沥青碎石桥面防水层及其施工方法。
The invention relates to a rubber powder modified asphalt gravel bridge deck waterproof layer and a construction method thereof.
本发明涉及一种橡胶粉改性沥青碎石桥面防水层及其施工方法。
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