地震波CT成像系统ppt课件
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1、data acquisition equipment(数据采集设备) 2、Transmitting equipment hole(孔内发射设备) 3、Hole receiving equipment(孔内接收设备)
4、Processing software(处理软件)
7
设备及安装
EquipBiblioteka Baiduent and installation
2
一．Introduction
In the carbonate rock area, karst environmental geological problems have become increasingly prominent, highlights the growing importance of geological exploration of karst. The complexity of the resulting in karst geologic disasters of easy transportation construction process, such as ground collapse, water gushing, and mud and other geological disasters, casualties and significant loss of state property, the construction schedule of project. Therefore, we must strengthen geological karst region detection. The routine geophysical method is investigated in detail the distribution law of the karst underground space, earthquake CT in Karst detection effect is good
4
二、 Seismic CT principle地震CT原理
Fundamental：According to the degree of fragmentation and distribution of seismic traveltime length or size of CT image attenuation which reflect the distribution of boundary and reliable rock all kinds of rock and soil. 根据走时长短或衰减大小构成的地震CT图像可靠反映各类岩土体的分布界 线及岩体的破碎程度和分布。
Superiority：
Opened up a new way of rock mass partitioning and velocity imaging------Higher than the conventional wave test resolution; on the karst fracture zone survey more efficient; more details can be used to evaluate the stability of the rock mass; can accurately determine spatial positions of geological anomaly。 开辟了岩体分区和波速成像的新途径------比常规波速测试分辨率更高；对岩溶破碎 带的勘测更高效；可对岩体稳定性进行更全面更细节的评价；可准确确定地质异常 的空间位置。
Application of crosshole seismic wave CT in Karst Exploration
跨孔地震CT在岩溶探测中应用
Zhaowei 赵伟
1
Content 主要内容
一．Introduction(引言) 二．The basic working principle of cross-hole seismic CT method(跨孔地震CT法基本工作原理) 三．Equipment introduction(仪器设备介绍) 四．Application example analysis(应用实例分析)
5
跨孔地震CT工作示意图
Schematic diagram of cross hole seismic CT 震源控制器 The source controller
seismograph 地震仪
松散土层（Loose soil）
电火花震源 sparker
检波器链 Hydrophone
完整基岩（Complete bedrock）
1、广州白云区黄岐二中
velocity
weak soil
激发孔 Stimulate hole
receiving hole 接收孔 6
三、 Equipment introduction仪器设备介绍
Seismic CT imaging system mainly includes the following parts(地震CT成像系统主要包含以下几个 部分)
3
一．引 言
在碳酸盐岩地区，岩溶环境地质问题日益突出，岩溶地质 勘探工作重要性日渐凸显。岩溶发育的复杂性导致交通建设过 程中极易产生突发的地质灾害，如地面塌陷、隧道突水、突泥 等地质灾害，造成人员伤亡和重大的国家财产损失，影响工程 施工进度。因此，必须加强岩溶地区的地质探测。常规 物探方 法很详细查清地下的岩溶的空间分布规律，地震CT在岩溶的探 测方面效果较好。
震源控制器及电火花震源
Hydrophone
地震仪及水听器链 8
野外工作照
Field photograph
Terraloc MK6
seismograph
9
发电机 electric generator
储能器
impulse generator
10
四、 Application example analysis
4、Processing software(处理软件)
7
设备及安装
EquipBiblioteka Baiduent and installation
2
一．Introduction
In the carbonate rock area, karst environmental geological problems have become increasingly prominent, highlights the growing importance of geological exploration of karst. The complexity of the resulting in karst geologic disasters of easy transportation construction process, such as ground collapse, water gushing, and mud and other geological disasters, casualties and significant loss of state property, the construction schedule of project. Therefore, we must strengthen geological karst region detection. The routine geophysical method is investigated in detail the distribution law of the karst underground space, earthquake CT in Karst detection effect is good
4
二、 Seismic CT principle地震CT原理
Fundamental：According to the degree of fragmentation and distribution of seismic traveltime length or size of CT image attenuation which reflect the distribution of boundary and reliable rock all kinds of rock and soil. 根据走时长短或衰减大小构成的地震CT图像可靠反映各类岩土体的分布界 线及岩体的破碎程度和分布。
Superiority：
Opened up a new way of rock mass partitioning and velocity imaging------Higher than the conventional wave test resolution; on the karst fracture zone survey more efficient; more details can be used to evaluate the stability of the rock mass; can accurately determine spatial positions of geological anomaly。 开辟了岩体分区和波速成像的新途径------比常规波速测试分辨率更高；对岩溶破碎 带的勘测更高效；可对岩体稳定性进行更全面更细节的评价；可准确确定地质异常 的空间位置。
Application of crosshole seismic wave CT in Karst Exploration
跨孔地震CT在岩溶探测中应用
Zhaowei 赵伟
1
Content 主要内容
一．Introduction(引言) 二．The basic working principle of cross-hole seismic CT method(跨孔地震CT法基本工作原理) 三．Equipment introduction(仪器设备介绍) 四．Application example analysis(应用实例分析)
5
跨孔地震CT工作示意图
Schematic diagram of cross hole seismic CT 震源控制器 The source controller
seismograph 地震仪
松散土层（Loose soil）
电火花震源 sparker
检波器链 Hydrophone
完整基岩（Complete bedrock）
1、广州白云区黄岐二中
velocity
weak soil
激发孔 Stimulate hole
receiving hole 接收孔 6
三、 Equipment introduction仪器设备介绍
Seismic CT imaging system mainly includes the following parts(地震CT成像系统主要包含以下几个 部分)
3
一．引 言
在碳酸盐岩地区，岩溶环境地质问题日益突出，岩溶地质 勘探工作重要性日渐凸显。岩溶发育的复杂性导致交通建设过 程中极易产生突发的地质灾害，如地面塌陷、隧道突水、突泥 等地质灾害，造成人员伤亡和重大的国家财产损失，影响工程 施工进度。因此，必须加强岩溶地区的地质探测。常规 物探方 法很详细查清地下的岩溶的空间分布规律，地震CT在岩溶的探 测方面效果较好。
震源控制器及电火花震源
Hydrophone
地震仪及水听器链 8
野外工作照
Field photograph
Terraloc MK6
seismograph
9
发电机 electric generator
储能器
impulse generator
10
四、 Application example analysis