freepeople性欧美熟妇, 色戒完整版无删减158分钟hd, 无码精品国产vα在线观看DVD, 丰满少妇伦精品无码专区在线观看,艾栗栗与纹身男宾馆3p50分钟,国产AV片在线观看,黑人与美女高潮,18岁女RAPPERDISSSUBS,国产手机在机看影片

正文內(nèi)容

露天礦邊坡監(jiān)測(cè)技術(shù)外文翻譯-資料下載頁

2025-05-11 14:32本頁面

【導(dǎo)讀】如果這個(gè)運(yùn)動(dòng),使得邊坡失穩(wěn),但是。失甚至是生命,這樣的后果在露天礦邊坡失穩(wěn)時(shí)是可以被避免的。面的邊坡監(jiān)測(cè)項(xiàng)目在一個(gè)有著巨大潛在邊坡穩(wěn)定危險(xiǎn)的露天礦是很有必要的。礦山也是有必要的。從本質(zhì)上講,每個(gè)礦山地質(zhì)情況各不相同,在決定用哪種適。用的監(jiān)測(cè)技術(shù)之前,應(yīng)該認(rèn)真分析影響其穩(wěn)定性的本質(zhì)因素。當(dāng)變形超過了巖石強(qiáng)度控制的范圍內(nèi),開采挖掘就會(huì)產(chǎn)生不穩(wěn)定因。邊坡穩(wěn)定性的最重要的管理手段,是因?yàn)橛幸粋€(gè)規(guī)定好的邊坡監(jiān)測(cè)方案。項(xiàng)工作還定義為對(duì)一個(gè)穩(wěn)定的露天礦巖石邊坡穩(wěn)定性的監(jiān)測(cè)記錄工作[1]。會(huì)定期和自動(dòng)測(cè)量參考點(diǎn)的活動(dòng)區(qū)域以確定變形量。經(jīng)常性的監(jiān)測(cè)會(huì)給予警告,對(duì)于保護(hù)人身和設(shè)備安全是必要的。殊的爆破預(yù)防措施或撤離作出管理決策,邊坡監(jiān)測(cè)是必不可少的基礎(chǔ)工作;策者的監(jiān)測(cè)要求,并確定可以預(yù)期目標(biāo)的報(bào)告。地下水滲入會(huì)造成邊坡失穩(wěn)。的是對(duì)敏感部位跟蹤。

  

【正文】 ement process. A modern scanner called SiteMonitor (Fig. 2) was developed by 3D Laser Mapping Ltd, UK initially for monitoring slope stability on old coal mine waste tips in South Wales, UK. Recently, the system is being adopted more widely in the mining industry. It records movements in the slope surface as small as 10mm with a distance range of up to 1000m. It records and analyses up to 8,000 measurements per second to create a detailed, accurate and continuous record of the slope profile. AngloPlatinum, the world largest producer of platinum has adopted the SiteMonitor for slope monitoring at some of its mines. The system is specifically designed for automatic and manual long ange profiling of surfaces, operating at distances up to 2,500 meters with accuracy of 50 millimeters. The systems perform continuous, remote scanning for 24 hours at locations determined by the pany’s Geotechnical team, collecting hundreds of point measurement daily. The point cloud data collected by the laser scanners is automatically analyzed using Site Monitor software from 3D Laser Mapping Ltd. The software can detect surface movement or slope deformation by paring readings against base measurements. The new laser scanning technology is also helping South Africa’s Kumba Iron Ore to improve the safety of iron ore extraction. SiteMonitor is equally used at De Beers Kimberley diamond mine in South Africa to capture highly accurate slope measurements and to help identify potential failures within the pit wall. Laser scanning records changes in rock structure that would be difficult and time consuming to detect using surveying techniques. The advantages of laser scanning over the survey method of slope monitoring are: 1) it doesn’t require the use of prism as monly use in surveys。 2) there is no problem of prism getting lost during blasting operations。 3) there is no safety risk during prism ins tallation。 4) thousand of points are monitored rapidly rather than single prism location。 5) no need for fixed installation。 6) the system can be moved into areas of limited access because of its portability。 7) it covers up to 2500 m range. Conclusion Apart from visual inspection, conventional monitoring equipment such as survey system theodolite and total station with reflecting prism, extensometers, inclinometers, piezometers provide information only for a single site, or at most, a small number of locations in the mine. If the monitored sites are too widely separated or if displacement occurs between sites, early indications of a pending slope failure might go unnoticed. Coupled with this is the fact that these conventional monitoring tools are difficult to install at many surface mines where steep highwalls and lack of benches limit access to areas above the working floor. Relocating monitoring equipment from location to location is costly, time consuming and could be dangerous on unstable slopes. Disturbing signals from trucks and other mining vehicles can cause step changes in the displacement measurements, confusing the user and making automatic alarming difficult. Furthermore, Vegetation on the rock face reduces the accuracy of the displacement measurements for that location, confusing the user and reducing confidence in the rest of the measurements. Laser scanner would have been a likely solution to the deficiencies of the conventional techniques but it equally es with its own disadvantages. The time required in processing of the scan document is too great for effectiveness. In addition, the range and accuracy of these systems can be greatly impaired by differences in the reflectivity of the rock, the angle of the rock face, weather, vegetation and other factors. The slope monitoring radar invention resides in anomaly detection and correction module for a slope monitoring system prising: an atmospheric correction module that corrects slope movement measurements for anomalies caused by atmospheric changes and a disturbance detection module that identifies disturbances that cause errors in the slope movement measurements. The disturbance detection module suitably masks regions affected by the errors of the conventional methods. In another form, the invention of the SSR resides in a method of error handling in interferometric signal processing for a slope monitoring system including the steps of: extracting uncorrected movement data from interferometric radar measurements, correcting the movement data for changes in atmospheric conditions, identifying disturbances in the corrected movement data and displaying the corrected movement data and regions affected by the disturbance. The slope monitoring radar is a stateoftheart technology whose advent has pletely transformed geotechnical risk management in surface mines
點(diǎn)擊復(fù)制文檔內(nèi)容
畢業(yè)設(shè)計(jì)相關(guān)推薦
文庫(kù)吧 www.dybbs8.com
備案圖鄂ICP備17016276號(hào)-1