岩石力学与工程学报
巖石力學與工程學報
암석역학여공정학보
CHINESE JOURNAL OF ROCK MECHANICS AND ENGINEERING
2010年
1期
111-117
,共7页
岩石力学%岩体结构面%双目系统%摄像机姿态%产状%非接触测量
巖石力學%巖體結構麵%雙目繫統%攝像機姿態%產狀%非接觸測量
암석역학%암체결구면%쌍목계통%섭상궤자태%산상%비접촉측량
rock mechanics%rock mass discontinuity%binocular system%camera pose%occurrence%non-contact measurement
提出一种改进的摄像机姿态获取方法,并据其实现岩体结构面产状的非接触测量.主要步骤为:(1) 将摄像机安置于云台上,令摄像机坐标系与云台坐标系重合,然后将其固定;(2) 通过规范拍摄过程将摄像机姿态参数减少为2个,然后以云台平面产状测量结果换算得到;(3) 通过摄像机姿态参数完成坐标系转换,于岩体三维数字模型上测量并得到结构面产状.对该方法中摄像机姿态测量误差造成的目标岩体结构面产状测量传播误差进行分析,通过对边坡和隧道开挖掌子面岩体的现场试验,发现该方法简便易行、精度与传统测量方法接近并有较大提升空间.此方法可以方便地实现岩体结构面产状完全非接触测量,并有效扩大测量范围、提高测量效率,避免测量人员暴露于裸露岩体下的危险.
提齣一種改進的攝像機姿態穫取方法,併據其實現巖體結構麵產狀的非接觸測量.主要步驟為:(1) 將攝像機安置于雲檯上,令攝像機坐標繫與雲檯坐標繫重閤,然後將其固定;(2) 通過規範拍攝過程將攝像機姿態參數減少為2箇,然後以雲檯平麵產狀測量結果換算得到;(3) 通過攝像機姿態參數完成坐標繫轉換,于巖體三維數字模型上測量併得到結構麵產狀.對該方法中攝像機姿態測量誤差造成的目標巖體結構麵產狀測量傳播誤差進行分析,通過對邊坡和隧道開挖掌子麵巖體的現場試驗,髮現該方法簡便易行、精度與傳統測量方法接近併有較大提升空間.此方法可以方便地實現巖體結構麵產狀完全非接觸測量,併有效擴大測量範圍、提高測量效率,避免測量人員暴露于裸露巖體下的危險.
제출일충개진적섭상궤자태획취방법,병거기실현암체결구면산상적비접촉측량.주요보취위:(1) 장섭상궤안치우운태상,령섭상궤좌표계여운태좌표계중합,연후장기고정;(2) 통과규범박섭과정장섭상궤자태삼수감소위2개,연후이운태평면산상측량결과환산득도;(3) 통과섭상궤자태삼수완성좌표계전환,우암체삼유수자모형상측량병득도결구면산상.대해방법중섭상궤자태측량오차조성적목표암체결구면산상측량전파오차진행분석,통과대변파화수도개알장자면암체적현장시험,발현해방법간편역행、정도여전통측량방법접근병유교대제승공간.차방법가이방편지실현암체결구면산상완전비접촉측량,병유효확대측량범위、제고측량효솔,피면측량인원폭로우라로암체하적위험.
A modified pose acquiring method is advanced,which can realize non-contact measurement of rock mass discontinuities occurrence with following steps:(1) setting camera on the cloud platform,adjusting to let camera coordinate system and cloud platform coordinate system be coincidence and fixing them;(2) reducing the number of pose parameters with regular photographing procedure,and getting them from the occurrence of platform extended plane;and (3) translating 3D digital model of rock mass generated by binocular system from local coordinate system to world coordinate system and measuring the discontinuities occurrences. After the above-mentioned steps,propagation error caused by pose measuring error is analyzed. The suggested method is used to survey the rock mass discontinuities occurrences of slope and rock tunnel excavation face in field. Compared with traditional method,the proposed method is convenient to be used in field to achieve complete non-contact measurement with good precision,and the precision can be advanced easily. With this method,the measuring range of rock mass discontinuity occurrence is expanded,and the efficiency can be advanced;and the risk of survey crew exposing under rock mass can also be avoided.
