| 1. | The value of mean pumping and recharging drawdown is linear to the logarithm of permeability coefficient ratio ( horizontal / vertical )
抽、回水口的平均降深与渗透系数比的对数基本成线性关系。 |
| 2. | We calculated the surface subsidence , horizontal displacement , incline , and current curvature using the groundwater drawdown , conical depression influence radius of water cone and ground property
根据地下水降深、降落漏斗影响半径、岩土工程地质性质，计算降水引发的地表沉降值、水平移动、倾斜、曲率现状值。 |
| 3. | In setting up the model of optimizing design of dewatering program , the goal function ( reduction pressure coefficient ) was to make surrounding ground settlement minimum under the promises of ensuring foundation pit draw down
在降水优化设计模型的建立中，以减降系数为目标函数，在保证基坑降深的前提下，使周边地面产生的沉降最小。 |
| 4. | As the old specific water yield apparatus can not put up visually the influence of water level and its decrease depth on the specific water yield of incompact soil sample , a new apparatus is designed
摘要针对原有给水度实验仪不能直观反映地下水水位埋深及其降深对给水度影响的缺点，设计了能采用柱体法测定松散土体试样的给水度的实验仪。 |
| 5. | The new apparatus not only can reflect the visual change of water level , the influence of water level and its decrease depth on the specific water yield , but also can be operated and understood easily by students
新设计的给水度实验仪能直观地显示出地下水水位的变化，并能反映出初始地下水水位埋深及水位降深对给水度的影响，且操作简单，易于学生理解掌握。 |
| 6. | A time length of ten years and the calculated heads of 1997 were used for model prediction . the predictive simulation showed that the continued pumping will cause relatively high changes in head distribution and increase average drawdown to 16 % after 10 years
在十年的预测期内，采用1997年的地下水计算水位作为初始水位用于模型的预测，结果表明持续的地下水开采会引起地下水水位的大幅度下降，十年以后平均降深会增加16 。 |
| 7. | The interfacing process has three stages , which is respectively called searching grasp object ring and initiative connecting , calibrating grasping manipulators to align the interfacing skirt and the object ring ' s center and haul lowering dsrv interfacing with the disabled submarine
对接作业过程分为搜索捕捉目标环实现初连接、调整对接机械手对中对接裙与目标环的中心、拉降深潜救生艇完成对接裙与失事潜艇对接平台的对接密封三个阶段。 |
| 8. | It is concluded : the determination of the center spacing may be conducted under the permissible elevation of the exit line of seepage surface on slope surface downstream . in the end , the author has analysed the seepage field what the holes are placed two rows along the slope height
另外，在对比多种孔距的方案分析结果的基础上，得出结论：排水孔孔距变化对边坡渗流场沿边坡走向方向水头分布影响明显，布设排水孔应根据目标降深确定排水孔孔距。 |
| 9. | ( 4 ) the maximum water quantity becomes greater , the better is the filtering bed permeability , the higher the river hydraulic conductance , the higher the river level , the larger the water - collecting area and the bigger the distance between collecting pipes . the water quantity varies directly with drawdown
( 4 )滤床的渗透性能越好，河床水力传导系数越高，河水水位越高，取水面积越大，取水管之间的间距越大，则最大取水量越大；水位降深与取水量成正比关系。 |
| 10. | This procedure can imitate the single well pumps water the chronometer calculates at all point water level in district declines deep with horary variety ; study the sport law of the rivers ; solve definitely flow draw water issue wanton boundary the wells of termses , predict that dives under water in the location , guide and construct and excavate the progress , appraise the rationality of the precipitation scheme
此程序可以模拟单井抽水时计算区域各点水位降深随时间的变化，研究水流运动规律；求解任意边界条件下的井定流量抽水问题，预测潜水位，指导施工开挖进度，评价降水方案的合理性。 |
