查询词典 drainage coefficient

The drainage system is formed by drainage system 、 Sewage Treatment plant and final disposal facility.

该排水系统是由排水管系、废水处理厂和最终处理设施组成。

Installation technology and application of the long-distance grp sand pipe;2. drainage pipe and field test of GRP sand pipe construction technology, we draw the conclusion that GRP pipe is applicable for drainage pipe of port engineering.

通过对玻璃钢夹砂管与钢筋混凝土排水管的综合性能比较及对玻璃钢夹砂管施工工艺的现场测试，得出&玻璃钢夹砂管完全适用于港口工程的排水管道&的结论。

The development of regional economy interrelates closely with the development of regional transportation. In addition, Zhu jiang is the important shipping artery of our country. Zhu jiang economic zone is a kind of typical drainage area economy, as we all know, the development of the shipping transportation is a hinge of the stratagem of Zhujiang drainage area development.

区域经济的发展与区域内交通运输的发展是密不可分的，而珠江是我国仅次于长江的水运大动脉，珠江区域经济带是典型的流域经济，航运交通的发展在整个流域经济发展的战略中具有举足轻重的作用。

Especially the drainage area of upper reaches of Yellow River in northeast Qinghai-Tibet Plateau, the drainage area of upper reaches of Yangtse river, lower reaches of Brahmaputra in southern Tibet and the upper reaches of Nujiang river, Lancangjiang river and Jinshajiang river in southeastern Tibet, are centralized areas that geological hazards occur, in which the earthquakes, rockfalls, landslides and mudflows are most typical, severe, and mostly hazards in human modern engineering activity and living environment.

尤其是青藏高原周缘西北部的黄河上游流域、东南部的长江上游流域、西藏南部的雅鲁藏布江下游区及其东南部的&三江地区&，成为地质灾害事件集中发生的区域，其中的地震、崩滑流、断裂活动等地质灾害效应最为强烈，成为影响现代人类工程活动和生存环境的主要灾害。

According to the distribution law of three zones in uncovering coal and the relation between the distribution law and delay outburst, the prevention and control technology is brought up, which firstly adopts gas drainage in the coal through drainage hole to release the outburst power by stages, and then intensifies the intensity of uncovering coal and increases the length of stress relaxation zone and stress concentration zone by using the liquid injecting and freezing to prevent the coal rheology. At last, the shoring measures to prevent roof falling is tabled.

根据掘进工作面附近暴露煤体的&三区&分布规律及其与延时突出的关系；提出先采用钻孔抽放石门突出煤层瓦斯等措施分阶段释放煤与瓦斯突出动力源；再用注液冻结技术增强揭开煤体的强度、增加集中应力区和卸压区的长度来防止被揭开煤体发生流变而导致延时突出的防突技术；以及在揭煤后采取迅速支护防止空顶和冒落等防治措施。

Currently, in order to control gas and enhance CMM recovery, various methods are adopted in Jixi Coal Mining Area such as upper roadway CMM drainage of low-permeability coal seams, upper near-horizontal hole drilling, coal seam plus-angle hole drilling, and roof large-diameter horizontal hole drilling, with satisfactory drainage results.

目前矿区为治理瓦斯，加大煤层气抽采，采用低透气性煤层的高位巷道抽采、高位钻场近水平钻孔、煤层钻场仰角钻孔抽采、顶板大直径水平钻孔等抽采方法，取得了良好的抽采效果。

The urbanization of polder area can result in change of land utilization property, increase in surface runoff coefficient, decrease in water surface ratio and increase in modulus of flood peak, and puts forward higher requirement for the surface drainage standard.

圩区城市化会造成土地利用性质改变、地表径流系数增大、水面率减少，使洪峰模数增加，从而对排涝标准又提出了更高的要求。

Return period ; runoff coefficient ; drainage pipeline network ; plane layout ; vertical layout ; design parameter

重现期；径流系数；排水管网；平面布局；竖向布局；设计参数

Sewage quantity of Jinan city was presented as drainage coefficient multiplied by city water demand, which was forecasted by grey dynamic model group. Basically, we calculated and predicated the conservative sewage recycle quantity.

采用灰色动态模型群法进行城市需水量预测，采用排水系数法预测了济南市市区污水量，计算出保守的中水可回用量。

The main works of this paper are as follows.First, according to the three-step method, 1-D unsteady flow model in river network is introduced. A new topological structure is presented to describe and store the topology information and data in river network ,which realises the connection between GIS and the numerical program of hydraulic calculating and turns the program into a universal one .A new formula of internal boundary conditions with double-recursion algorithm is deduced, and the relationship of recursive coefficient between imaginary channel length and non-imaginary channel length is presented ,which makes sure that the model can comprise the numerical simulation of the internal boundaries such as side pipe outflow ,barrage, slice gate and drainage pump station.

主要工作如下：(1)根据三级解法建立了一维河网非恒定流模型，并提出了一种新的数据结构来描述和储存河网拓扑信息，方便了GIS平台和数值计算程序的衔接，实现了三级解法程序的通用性；从河段方程组出发，根据虚设河段法推导出了内边界条件的双追赶法公式，指明了虚设河段的追赶系数和非虚设河段追赶系数的关系，从而使模型可以模拟集中旁侧入流、堰、闸、水泵等内边界对行洪过程的影响。

Cable dampener cannot be rolled up but must be hung over the cable.

缆帆不能被卷起，必须保证处于展开状态

"This skylark is a present from my master," he says.

"这只云雀是我主人献上的礼物。"他说。