| 1. | If lining combine with surrounding rock closely , it can be calculated together with rock pressure with coupling model
外水压力是和有压隧洞中内水压力相对而言的，作用对象为衬砌。 |
| 2. | After reading some papers about external water pressure of deep tunnel , talking about several opinions about disadvantages that exist in the external water pressure of deep tunnel
摘要阅读了有关深埋隧道外水压力文章后，对其中的几个问题提出自己的见解。 |
| 3. | Firstly , the problem that external waterpressure aroused by different seepage control is how to sound distribute between the grouting rock and liner is analyzed by nonlinear computation
首先，研究了不同渗控方案的外水压力在灌浆加固圈和衬砌上如何合理分配的问题。 |
| 4. | There are few great depth , high external waterpressure and high geostress tunnels engineering and few researches on this up to present . thus , there will be many challenges in construction of the tunnels
如此大埋深、高外水压力、高地应力下的隧洞工程建设目前还很少有同类工程可资借鉴，这方面的研究也不多见。 |
| 5. | The region belong to high geostress area . in the preceding excavation of 4km long exploratory tunnel , several bigger flows had taken place . the maximal flux approached 4 . 91m3 / s and the maximal water pressure is 10 . 22mpa
在前期4km长探洞施工过程中，曾发生多次较大涌水，单点最大涌水量达4 . 91m ~ 3 s ，长探洞封堵后最大水压力达10 . 22mpa ，工程区高外水压力问题突出。 |
| 6. | Numerous deep lying tunnels are adopted with the water project construction transferring to the south - west area of china , the high external water pressure and flow are the most important problems faced in the tunnel design and construction
随着我国水电建设逐步向西南转移，深埋隧洞方案大量被采用，而深埋隧洞的高外水压力和突涌水问题已成为目前隧洞设计和施工中亟待解决的难题。 |
| 7. | Existing monitoring data obtained before 1990 are investigated first . results shows that reinforced concrete liner of the tunnel is mainly affected by the temperature and the permeate water pressure between the liner and surrounding rock , and the effect of rock pressure is much smaller
文中首先对引滦隧洞原有监测资料进行了分析，发现隧洞的钢筋混凝土衬砌主要受温度荷载和外水压力的影响，而山岩压力的作用相对较小。 |
| 8. | ( 2 ) the method of finite element discrete and optimal parameter back analysis is adopted . ( 3 ) concentrated on the question of high external water pressure of the deep - lying tunnel , the basic theory and method calculating external water pressure are systematically studied . ( 4 ) based on jinping cascade 2 hydropower station , numerical simulation rain infiltration of seepage field under different drainage pattern and grouting pattern are studied , also , the high external water pressure is analyzed and studied and some seepage control measures are put forward
( 2 )采用有限元离散?优化法进行参数的反演分析； ( 3 )针对深埋隧洞的高外水压力问题，进一步分析和研究了衬砌水荷载及外水压力的作用机理和计算方法； ( 4 )以锦屏二级水电站深埋长引水隧洞作为本文的主要研究对象，采用考虑降雨入渗渗流场分析的方法对排水方案和灌浆封堵方案不同情况下的渗流场的水头分布进行了数值模拟，并对其外水压力进行了分析和研究，提出了渗流控制的具体措施。 |
| 9. | Based on the modern design theory of tunnels construction that the adjoining rock be regarded as primary load - bearing structure , this thesis have made researches on the stability of tunnels mother rock and the safety of support pattern under the high external waterpressure and high geostress
这就使本隧洞工程的建设面临着极大的挑战。本文是在将围岩作为主要承载结构，支护与围岩共同作用的现代隧洞设计理论的基础上，来研究高外水压力及高地应力下隧洞围岩稳定性及支护结构安全的。 |
| 10. | To reply the inquiry of several scholars on " the simulation of tunnel external water pressure by analytical - mathematical method " , the coefficient method , localization of pure numerical method , analytical - mathematical method relating to the calculation of tunnel external water pressure , together with the detail of the example in that paper , are discussed in the paper
摘要针对有关学者对《深埋隧道外水压力计算的解析数值法》一文的讨论，探讨了隧道外水压力计算中作用系数法、单纯数值方法的局限性、解析数值法以及与计算实例等相关的几个问题。 |
