价值工程
價值工程
개치공정
VALUE ENGINEERING
2013年
32期
312-314
,共3页
剩余静校正%速度平滑%种子点%迭代收敛
剩餘靜校正%速度平滑%種子點%迭代收斂
잉여정교정%속도평활%충자점%질대수렴
residual static correction%smooth velocity%seed point%iterative convergence
山地地区地表和地下地质条件复杂,接收条件差,原始资料信噪比低,做剩余静校正前很难准确的识别有效速度,经过几次速度分析和剩余静校正后,才得到容易辨认的速度,但是由于初始速度和初始静校正量的误差问题,往往剩余静校正的迭代不是收敛的,得不到真实的地下构造形态。只有采用比较合理的求取初始速度方法,才能保证得到真实合理的成像。
山地地區地錶和地下地質條件複雜,接收條件差,原始資料信譟比低,做剩餘靜校正前很難準確的識彆有效速度,經過幾次速度分析和剩餘靜校正後,纔得到容易辨認的速度,但是由于初始速度和初始靜校正量的誤差問題,往往剩餘靜校正的迭代不是收斂的,得不到真實的地下構造形態。隻有採用比較閤理的求取初始速度方法,纔能保證得到真實閤理的成像。
산지지구지표화지하지질조건복잡,접수조건차,원시자료신조비저,주잉여정교정전흔난준학적식별유효속도,경과궤차속도분석화잉여정교정후,재득도용역변인적속도,단시유우초시속도화초시정교정량적오차문제,왕왕잉여정교정적질대불시수렴적,득불도진실적지하구조형태。지유채용비교합리적구취초시속도방법,재능보증득도진실합리적성상。
Due to complex geological conditions of mountainous area and poor receiving condition, the original material SNR is low. It is difficult to accurately identify the effective velocity before residual static correction. The easily identified velocity can be gained after several times of velocity analysis and residual static correction. But because of the error of initial velocity and initial statics, the iterative of residual static correction is always not convergent so the real underground structural configuration can not be gained. Only relatively reasonable initial velocity calculating method can ensure the real and reasonable imagery.