隧道地质调查中综合物探方法的应用研究毕业论文.doc

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隧道地质调查中综合物探方法的应用研究毕业论文,隧道地质调查中综合物探方法的应用研究the research on application of comprehensive geophysical exploration in the tunnel geological investigation摘 要本文从以往在隧道勘察中发生的失误或不完善,带来严重的地质灾害,造...
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隧道地质调查中综合物探方法的应用研究

The research on application of comprehensive geophysical exploration in the tunnel geological investigation


 


 


摘  要

本文从以往在隧道勘察中发生的失误或不完善,带来严重的地质灾害,造成人员伤亡及重大的经济损失这一现象入手,分析得出形成上述地质灾害的部分原因是在隧道勘察中缺少工程物探投入或工程物探工作程度不足。从而得出工程物探在隧道工程中的重要性和必要性。

根据几年来作者在隧道工程物探的生产实践和阅读、搜集大量相关资料,经过分析与总结得出,隧道工程物探应用有着很强的针对性和适应性。论文中用几个应用实例来说明:

(1)不同勘察阶段(初勘、详勘)物探工作的选用;

(2)深埋、浅埋隧道工程物探工作的选用;

(3)不同地质条件隧道工程物探工作的选用。

最后总结归纳出隧道工程物探所需要解决的问题主要有:

(1)划分地层(地质分层),查明隧道通过剖面的各地层深度与厚度。

(2)查明地质构造,隧道轴线段有无断层、破碎带、软弱层面等。

(3)查明基岩风化程度,从而结合速度资料进行围岩分级。

(4)划分洞口地层结构,判断洞口稳定性。

(5)查明地下水赋存情况及其活动动态。

(6)其他不良地质现象存在情况。

针对上述需要查明的地质问题与计算围岩分级情况,论文提出合理选用物探方法的原则,并统计了物性参数值在不同岩性中的分布范围。得出以下研究成果:

(1)总结出各物探方法在隧道地质调查中的作用和优缺点。

(2)得出不同地质条件下和不同勘察阶段,隧道工程物探方法选择和布置的原则。

(3)根据以往工作经验和事例,对常用的物性参数进行了归纳总结,同时介绍了不同地质条件下物探方法选择的依据。

期望上述研究成果能为今后隧道工程物探工作起到借鉴和参考作用。


关键词:物探,隧道,地质调查


Abstract

This paper, analyzing mistakes or imperfections making serious geological disasters and causing casualties and enormous economical losses in the previous tunnel prospecting, found that these disasters are caused partly by lacking of inputs or depth of engineering geological prospecting. It proved the importance and the necessity of engineering geological prospecting in the tunnel project.

According to production practice in the tunnel engineering geological prospecting and materials from reading and collecting, the author summarized that the application of tunnel engineering geological prospecting has strong focalization and adaptability with proved by several examples in this paper. 

(1) the selection of geological prospecting in different stages(initial-prospecting, detailed-prospecting)

(2)the selection of geological prospecting in the deep-laid and   shallow-laid of tunnel project

(3)the selection of geological prospecting of tunnel projecting in  different geological conditions

Finally, the author summed up main problems needing to be solved in tunnel engineering geological prospecting as follow:

(1)differentiate stratum and find out the depth and thickness of different stratums in the tunnel section

(2)find out geological structure and existence situation of fault, broken zone and weak plane

(3)find out weathering level of bed rock to classify surrounding rock combining speed materials

(4)differentiate stratum structure of the entrance of tunnel to judge the stability of it

(5)find out existence situation and performance of ground water

(6)situations of other harmful geological phenomenon

In view of above problems and classification of surrounding

 rock, the author showed principles of rational choosing of methods in geological prospecting and counted disperse range of physical character parameter value in different petrosal character, getting achievements as follow:  

(1)summarization of effect, merits and demerits of different geological prospecting methods in the tunnel geological investigation

(2)method selection and arrangement principle of tunnel engineering geological prospecting in different geological conditions and prospecting stages

(3)According to previous experience and cases, the author concluded the 物性 parameters most in use ,and showed the basis of selecting geological prospecting methods in different geological conditions.

It is expected that above achievements can be used for reference in the tunnel engineering geological prospecting to come.


Key words: geophysical exploration, tunnel, geological investigation

 


目     录


1 绪论 1

1.1研究的必要性 1

1.2研究内容和技术路线 3

1.2.1常见隧道地质灾害 3

1.2.2研究内容 4

1.2.3拟采取的技术路线 5

1.3主要的研究成果 5

2 工程物探在隧道地质调查中的作用 6

2.1隧道地质调查(勘察) 6

2.1.1 隧道勘察的阶段划分 6

2.1.2隧道勘察的主要方法 7

2.1.3 隧道勘察的主要手段 10

2.2物探方法在隧道地质调查中的优越性 11

2.3隧道..