頁籤選單縮合
題名 | 現地岩體RQD值之影像量測=Estimation of RQD in Rock Mass by Image Processing |
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作者姓名(中文) | 蔡錦松; 馬永嵩; 張家齊; | 書刊名 | 高苑學報 |
卷期 | 6:1 1997.02[民86.02] |
頁次 | 頁207-214 |
分類號 | 441.1 |
關鍵詞 | 不連續面; 影像處理; 岩石品質指標; Discontinuity; Image processing; Rock quality designation; |
語文 | 中文(Chinese) |
中文摘要 | 本文旨在探討經影像處理的方式,由現場攝取之影像,自動偵測岩石不連續面問 距,希望取代傳統之人工量測,對於不連續面間距之分析,則採用統計中常態分佈模式,來 取得代表性之岩體 RQD 值。 本文分別於四案例現場,實地人工量測不連續面間距,並攝取 影像進行影像分析。 實測發現,二者所得結果非常近似。詳細結論包括 (1) 於案例中,影 像分析所得之 RQD 值,和人工量測而得之 RQD 值其最大相對差異約為百分之六;(2) 受測 物距離在 15 公尺內,相對角度變化在 60 ℃以內時,最大誤差約為百分之五;(3) 利用影 像偵測不連續面間距,較傳統之人工量測方便、安全,同時可節省原有人工測量 60 %之量 測時間;(4) 不連續面間距之或然率分布呈對數常態分佈。 |
英文摘要 | This study presents a procedure for investigating surface discontinunities of in-situ rock mass by using image processing with the video pictures taken in the field. The main purpose is toimprove the conventional investigation by human measuring. Four insitu measurements have been performed to compare the efficiency and accuracy between the proposed image processing procedure and the conventional human measuring. Results indicate that the image processing procedure can provide equally accurate RQD values as those of the conventional measurements. Conclusions include (1) the relative difference between the proposed and the conventional measurements is about 6%, (2) the maximum error is about 5% for an image measurement on picture taken 15 meters away and with 60 degrees inclination, (3) the image processing can save about 60% working time, and (4) the distribution of rock's discontinuity is near log-normal type. |
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