查询词典 pioneer tunnel

The one that should pay attention to the CRD tunnel is fast closing of tunnel in order to reduce the development of the plasticity district and for dual sidewall guide pit tunnel is increasing horizontal supporting rigidity in order to reduce the horizontal displacement.

采用CRD法时，应注重隧道的快速封闭，以减小塑性区的发展；采用双侧壁法时，应注重增加隧道水平支撑刚度，减小隧道水平变形。

With the background of the first sole-layer lining water tunnel - Qingcaosha raw water tunnel undercrossing Yangtze river, and based on the engineering characteristics, building requirements, geology and surrounding environment, this paper analyzes technical difficulties in the course of construction from the aspect of construction of hyper deep pit and long-distance tunnel.

摘 要 文章以国内首例单层衬砌输水隧道工程－青草沙原水过江管工程为工程背景，在深入研究工程特点、建设要求、工程地质情况、周边及沿线环境的基础上，从超深基坑施工和长距离隧道施工的技术难点进行分析，并提出控制措施及建议。

Research method: because the water pressure is influenced double by head loss and contact area between karst water and tunnel lining, based on regulate decrease coefficient of head on karst tunnel, analysis model of water pressure on tunnel.

研究方法：隧道水压力受地下水水头损失和地下水与衬砌接触面积的双重影响，据此在调整岩溶隧道水头折减系数的基础上，分析隧道水压力模式。

Auto Shrink sleeve machine with tunnel; Steam sleeve tunnel; Head sleeve tunnel; shrink Label;...

收缩机；自动化套标收缩生产线；自动化套标机；蒸气收缩炉；电热收缩炉；热收缩膜料。。。

But the base of tunnel is not regarded in tunnel design, which cause tunnel disease.

我国铁路隧道设计中普遍存在&重拱轻底&的思想，由于基底结构薄弱而引起的隧道病害问题严重。

In the same time it is have done analyse that disease of tunnel because compressive stress, summarize the repair measure of tunnel disease and measure of construct technics in tunnel disease construct.

同时对由膨胀力引起的隧道病害做了分析，总结出具体的隧道变形病害整治措施，隧道病害施工工艺措施。

This tunnel has happened many distortions from begin construct, and it continuanced use in the tunnel manage.This arose part collapse of tunnel or disease in differ degree.

该隧道自开始建设，直至建成运营过程中，曾发生过多次变形破坏，引起隧道局部塌方或是不同程度的病害。

The sixteen plants are firstly divided into six types according to evaluation grades and subject function statistical method:the first type is Cajanus cajan and Crotalaria mucronata,the best adaptability ,which can be used pioneer plant or constructive species; the second type is Cynodon dactylon,the better adaptability, which can be used constructive species ;the third type is Eragrostis curvula, Paspalam notatum,which can be used constructive species on rotten rock slope ; the forth type is kummerowia striata,Lotus corniculatus and Vitex negundo.The adaptability is centered,and can be used protection species and auxiliary species;the fifth type is Robinia pseudoacacia,Eremochloa ophiuroides,Vitex negundo,Lespedeza formosa,Leucaena leucocephala,Desmodium sequax, Rhus chinne- nsis,which can't be plant singly and be used accessory species;the sixth is Trifolium repens,which can be used pioneer plant.

根据评价边坡防护植物适应性的十个重要指标，首次运用隶属函数和聚类分析方法，对各供试植物的边坡适应性综合排序并分为六类：第一类为木豆和猪屎豆，边坡适应性最强，适宜作为先锋植物和建群种；第二类为狗牙根，边坡适应性强，适宜与豆科植物混播，作为建群种；第三类为弯叶画眉草和百喜草，边坡适应性较强，适宜与豆科植物混播，作为风化岩边坡的建群种；第四类为鸡眼草、百脉根和马棘，边坡适应性中等，适宜作为保护种与伴生种；第五类为刺槐、假俭草、荆条、美丽胡枝子、银合欢、波叶山蚂蝗和盐肤木，边坡适应性较差，不宜单独在边坡上种植，最好与速生型豆科草本混播，作为边坡防护植物群落的辅助植物；第六类为白三叶，边坡适应性最差，但因其出苗率高、生长速度快，作为先锋植物，起到前期覆盖坡面的作用。

Therefore, with some engineering and biological measures, after some pioneer trees are planted in extremely degraded tropical areas,the pioneer forest should be reformed by multilayer and multispecies broad leaved mixed forest in time, wihich could accelerate the development of artificial forest into local climax community.

因此，对于极度退化的热带丘陵台地区，在一定工程和生物措施基础上，用先锋绿化树种造林成功后，及时用多层多种的阔叶混交林改造原有先锋林，可以加速人工林向地带性植被类型演替。

Pioneer always took a given percent of the annual profits to divide equally among all employees,so our profit-sharing checks were higher than if Pioneer had not purchased Norand.

先锋国际的老规律是拿出一定比例的年利润平均分配给所有的雇员，所以我们分的的利润比收购罗兰德之前减少

But this is impossible, as long as it is engaging in a market economy, there are risks in any operation.

但是，这是不可能的，只要是搞市场经济，是有风险的任何行动。

We're on the same wavelength.

我们是同道中人。