地震波CT成像系統(tǒng)課件

1、Application of crosshole seismic wave CT in Karst Exploration跨孔地震CT在巖溶探測(cè)中應(yīng)用Zhaowei趙 偉Content 主要內(nèi)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(儀器設(shè)備介紹)四Application example analysis(應(yīng)用實(shí)例分析) 一Introduction In the carbonate rock area,

2、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 a

3、nd 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, earth

4、quake CT in Karst detection effect is good 一引 言 在碳酸鹽巖地區(qū)，巖溶環(huán)境地質(zhì)問(wèn)題日益突出，巖溶地質(zhì)勘探工作重要性日漸凸顯。巖溶發(fā)育的復(fù)雜性導(dǎo)致交通建設(shè)過(guò)程中極易產(chǎn)生突發(fā)的地質(zhì)災(zāi)害，如地面塌陷、隧道突水、突泥等地質(zhì)災(zāi)害，造成人員傷亡和重大的國(guó)家財(cái)產(chǎn)損失，影響工程施工進(jìn)度。因此，必須加強(qiáng)巖溶地區(qū)的地質(zhì)探測(cè)。常規(guī) 物探方法很詳細(xì)查清地下的巖溶的空間分布規(guī)律，地震CT在巖溶的探測(cè)方面效果較好。Fundamental：According to the degree of fragmentation and distribution of seismic t

5、raveltime length or size of CT image attenuation which reflect the distribution of boundary and reliable rock all kinds of rock and soil.根據(jù)走時(shí)長(zhǎng)短或衰減大小構(gòu)成的地震CT圖像可靠反映各類巖土體的分布界線及巖體的破碎程度和分布。Superiority：Opened up a new way of rock mass partitioning and velocity imaging-Higher than the conventional wave test

6、 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。開辟了巖體分區(qū)和波速成像的新途徑-比常規(guī)波速測(cè)試分辨率更高；對(duì)巖溶破碎帶的勘測(cè)更高效；可對(duì)巖體穩(wěn)定性進(jìn)行更全面更細(xì)節(jié)的評(píng)價(jià)；可準(zhǔn)確確定地質(zhì)異常的空間位置。二、 Seismic CT principle地震C

7、T原理Seismic CT imaging system mainly includes the following parts(地震CT成像系統(tǒng)主要包含以下幾個(gè)部分) 1、data acquisition equipment(數(shù)據(jù)采集設(shè)備) 2、Transmitting equipment hole(孔內(nèi)發(fā)射設(shè)備) 3、Hole receiving equipment(孔內(nèi)接收設(shè)備) 4、Processing software(處理軟件)三、 Equipment introduction儀器設(shè)備介紹 設(shè)備及安裝震源控制器及電火花震源地震儀及水聽器鏈HydrophoneEquipment and installation 儲(chǔ)能器impulse generator 發(fā)電機(jī) electric generator 1、廣州白云區(qū)黃岐二中四、 Ap