测量统计范围大小对结构面迹长估计的影响

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (390 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要基于计算机模拟裂隙网络和典型露头实测结果2种数据，对比研究测量范围大小对迹长估值的影响。通过对比研究揭示测量范围大小对不同估值公式可靠性的影响，研究允许最小测量范围及其影响因素，发现窗口过大时有些计算公式也会出现明显偏差，并分析计算机模拟技术在该问题研究上的局限性。研究表明，对结构面迹长估值，首先应研究测量范围的适宜性及其对所采用估值方法的影响，否则，即便采用目前复杂的计算公式仍可能存在较大的取样偏差，为后续的结构面建模埋下隐患。另外，针对我国高放废物地质处置预选场地的典型露头进行的测量范围适宜性分析，也可为其接下去的结构面参数识别打下基础。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：岩石力学, 结构面, 迹长估计偏差, 测量范围

Abstract：The extent of measurement range has a significant influence on estimation of trace length of discontinuity. However，measurement range is not considered in some of the current calculation formulas，though this parameter contained in some of the formulas，whether this influence could be showed in different measurement ranges still remain farther test and verify. So this paper attempts to make a comparative study on the basis of two types of data，one is created from Monte Carlo simulation，another is measured on a real outcrop. The influences of measurement range on the estimation of trace length by different formulas，the permitted minimum measurement range and its factors have been studied in this paper. The results indicate that some formulas may also contain notable errors when the sampling window is too large. Therefore，for the evaluation of the trace length of discontinuity，it should begin with the analysis of suitability and influence of measurement range；otherwise the sampling deviation would be still unquenchable even if complicated formulas are adopted. The edge effect and limitation of Monte Carlo simulation method for this issue have been found during this study. Also the suitability analysis in typical outcrops of candidate area for the geological disposal of high-level radioactive waste in China is made，which is helpful for the subsequent discontinuity investigation.

Key words： rock mechanics discontinuities trace length estimation bias measurement range

收稿日期: 2011-06-04

引用本文:

李晓昭1，2，周扬一1，2，汪志涛1，2，章杨松3，郭亮1，2，王益壮1，2. 测量统计范围大小对结构面迹长估计的影响[J]. 岩石力学与工程学报, 2011, 30(10): 2049-2056.
LI Xiaozhao1，2，ZHOU Yangyi1，2，WANG Zhitao1，2，ZHANG Yangsong3，GUO Liang1，2，WANG Yizhuang1，2. EFFECTS OF MEASUREMENT RANGE ON ESTIMATION OF TRACE LENGTH OF DISCONTINUITIES. , 2011, 30(10): 2049-2056.

链接本文:

http://www.rockmech.org/CN/Y2011/V30/I10/2049

[2]	PAHL P J. Estimating the mean length of discontinuity traces[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1981，18(2)：221-228. " target="_blank">
[3]	ROHRBAUGH M B J，DUNNE W M，MAULDON M. Estimating fracture trace intensity，density and mean length using circular scan lines and windows[J]. AAPG Bulletin，2002，86(12)：2 089-2 104. " target="_blank">
[9]	ÖZKAYA S I. Fracture Length estimation from borehole image logs[J]. Mathematical Geology，2003，35(6)：737-753.
[10]	MAULDON M. Estimating mean fracture trace length and density from observations in convex windows[J]. Rock Mechanics and Rock Engineering，1998，31(4)：201-216. " target="_blank">
[12]	ZHANG L，EINSTEIN H H. Estimating the mean trace length of rock discontinuities[J]. Rock Mechanics and Rock Engineering，1998，31(4)：217-235. " target="_blank">
[13]	陈剑平，吴源，尚晓春. 取样窗口迹长均值估计方法的讨论[J]. 工程地质学报，2001，9(3)：302-307.(CHEN Jianping，WU Yuan，SHANG Xiaochun. A discussion on the method for estimation of mean trace length in sampling windows[J]. Journal of Engineering Geology，2001，9(3)：302-307.(in Chinese))
[1]	BAECHER G B. Progressively censored sampling of rock joint traces[J]. Mathematical Geology，1980，12(1)：33-40. " target="_blank">
[7]	SONG J J，LEE C I. Estimation of joint length distribution using window sampling[J]. International Journal of Rock Mechanics and Mining Sciences，2001，38(4)：519-528. " target="_blank">
[4]	CRUDEN D M. Describing the size of discontinuities[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1977，14(2)：133-137. " target="_blank">
[5]	PRIEST S D，HUDSON J A. Estimation of discontinuity spacing and trace length using scanline surveys[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1981，18(2)：183-197. " target="_blank">
[6]	LASLETT G M. Censoring and edge effects in areal and line transect sampling of rock joint traces[J]. Mathematical Geology，1982，14(2)：125-140. " target="_blank">
[8]	JIMENEZ-RODRIGUEZ R，SITAR N. Inference of discontinuity trace length distributions using statistical graphical models[J]. International Journal of Rock Mechanics and Mining Sciences，2006，43(6)：877-893. " target="_blank">
[11]	KULATILAKE P H S W，WU T H. Estimation of mean trace length of discontinuities[J]. Rock Mechanics and Rock Engineering，1984，17(4)：215-232. " target="_blank">
[16]	范留明，黄润秋. 一种估计结构面迹长的新方法及其工程应用[J]. 岩石力学与工程学报，2004，23(1)：53-57.(FAN Liuming，HUANG Runqiu. New method for estimating trace length of discontinuities and its engineering application[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(1)：53-57.(in Chinese))
[14]	LYMAN G J. Rock fracture mean trace length estimation and confidence interval calculation using maximum likelihood methods[J]. International Journal of Rock Mechanics and Mining Sciences，2003，40(6)：825-832.
[15]	黄国明，黄润秋. 用窗口法估计不连续面的连通率[J]. 水文地质工程地质，1998，(6)：27-30.(HUANG Guoming，HUANG Runqiu. Estimation of connectivity of discontinuities by window method[J]. Hydrogeology and Engineering Geology，1998，(6)：27-30.(in Chinese))
[17]	TONON F，CHEN S. On the existence，uniqueness and correctness of the fracture diameter distribution given the fracture trace length distribution[J]. Math Geosci，2010，42(4)：401-412.