Karst landscape

Important role of karstification in the Lower Permian reservoir in Sichuan Basin;

岩溶在四川盆地下二叠统储集层中的重要作用

Geologic conditions in karst region are very complicated,for example,earth caves,karstification,tectonic,groundwater and underground river are very rich,all of which would influence on pile types,quality and safety seriously.

灰岩地区因其地质条件复杂,如土洞、岩溶(溶洞、溶沟、溶槽)、构造(断层、节理裂隙)发育,地下水丰富甚至有地下暗河通道等,严重影响桩基础的选型和施工质量及安全。

Vertical zonations for different type karstifications are discussed.

简述了岩溶发育的垂直分带性和岩溶发育的下限深度 ,概述了不同类型的岩溶发育垂直分带方案 ,讨论了现有岩溶发育垂直分带的特点。

Current status and comprehensive countermeasures of soil erosion for Karst rocky desertification areas in the Southwestern China;

西南岩溶石漠化区水土流失现状与综合防治对策

Fuzzy-based Evaluation of Karst Eco-environment Fragility at Houzhai Underground Basin in Puding County,Guizhou Province;

贵州普定后寨河流域岩溶生态脆弱性的模糊综合评价

Ecological water use and its coordination assessment in Southwest China karst mountain——A case study on Houzhai subterranean stream basin,Puding county,Guizhou province;

西南岩溶山区生态用水及其分配协调性评价——以贵州普定后寨地下河流域为例

Study on the geologic forecast s way tunnel of in karsts-geology;

岩溶隧道超前地质预报方法研究

Study of the Characteristic of Bearing Capability of Pile Foundation in Karsts Area;

岩溶地区嵌岩桩基承载特性研究

Research conclusions:The karsts encountered in the construction can be divided into four types according to the engineering geological charac.

研究目的:宜万线是目前已建和在建工程中岩溶最为发育的铁路线,全线共有隧道159座,约占线路总长度的59%,其中多数隧道穿越碳酸盐岩地层,岩溶、岩溶水极其发育,这给隧道工程的安全施工以及工程建成后的运营安全造成十分重要的影响。

Numerical analysis of influence of karst caves in top of tunnel on stability of surrounding rock masses;

隧道顶部岩溶对围岩稳定性影响的数值分析

Based on pile foundation design and construction for karst caves of Shuiyang Bridge,summarization on some treatment measures,like bridge basic geological exploration in karst growing area,bridge pile foundation design,safe thickness calculation of top surface in karst caves and other problems,will provide relative information for pile foundation design and construction in similar regions.

通过水阳江大桥溶洞桩基的设计与施工,总结岩溶发育区桥梁基础地质勘探、桥梁桩基础设计、溶洞顶板安全厚度计算及某些问题的处理方法,可为同类地区桩基设计和施工提供参考。

Karst caves are the grave geologic hidden trouble in the infrastructure construction such as superhighway,railway and dam.

岩溶是高速公路、铁路、大堤等基础设施建设的重大地质隐患。

According to the analysis results,the karst cave under pile-end mainly effects the shaft resistance around the whole piles.

结合岩溶地区2根大直径人工挖孔灌注桩的静载荷试验和应力测试结果,对桩的荷载传递特性进行了详细的对比分析。

Characteristics of apparent resistivity distribution in structurally fractured zones,old underground workings and karst caves are summarized.

总结了工作区内构造破碎带、老硐及岩溶的视电阻率分布特征, 在此基础上解释出 7条构造破碎带、7个老硐与 3处岩溶。