水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2013年
5期
92-96
,共5页
陈斌%赵坚%李英玉%朱蓓
陳斌%趙堅%李英玉%硃蓓
진빈%조견%리영옥%주배
裂隙岩体%分形维%剪切位移%隙宽演化
裂隙巖體%分形維%剪切位移%隙寬縯化
렬극암체%분형유%전절위이%극관연화
fractured rock%fractal dimension%shear displacement%evolution of gap width
对单裂隙水流传输特性的研究是裂隙网络相关研究的基础,其水力传导系数取决于裂隙面粗糙度、接触率及隙宽开度分布情况。模拟了裂隙隙宽随剪切位移变化的空间分布规律,通过计算机程序生成不同粗糙度的裂隙面,并探讨了裂隙开度、接触率与剪切位移、裂隙面分形维数的关系,得出结论:法向应力不变情况下,裂隙的隙宽均值和接触率随着剪切位移的增大而增大;相同剪切位移下,分形维D 值越大,隙宽均值与接触率也越大;且接触部分均由剪切初期的分散状态逐渐发展到片状分布状态。
對單裂隙水流傳輸特性的研究是裂隙網絡相關研究的基礎,其水力傳導繫數取決于裂隙麵粗糙度、接觸率及隙寬開度分佈情況。模擬瞭裂隙隙寬隨剪切位移變化的空間分佈規律,通過計算機程序生成不同粗糙度的裂隙麵,併探討瞭裂隙開度、接觸率與剪切位移、裂隙麵分形維數的關繫,得齣結論:法嚮應力不變情況下,裂隙的隙寬均值和接觸率隨著剪切位移的增大而增大;相同剪切位移下,分形維D 值越大,隙寬均值與接觸率也越大;且接觸部分均由剪切初期的分散狀態逐漸髮展到片狀分佈狀態。
대단렬극수류전수특성적연구시렬극망락상관연구적기출,기수력전도계수취결우렬극면조조도、접촉솔급극관개도분포정황。모의료렬극극관수전절위이변화적공간분포규률,통과계산궤정서생성불동조조도적렬극면,병탐토료렬극개도、접촉솔여전절위이、렬극면분형유수적관계,득출결론:법향응력불변정황하,렬극적극관균치화접촉솔수착전절위이적증대이증대;상동전절위이하,분형유D 치월대,극관균치여접촉솔야월대;차접촉부분균유전절초기적분산상태축점발전도편상분포상태。
The studies for the transmission characteristics of single fracture flow are the foundation of fractured network research,the hydraulic conductivity of which depends on the distribution of fractured surface roughness,contact rate and fractured aperture.Here,the spatial distribution pattern of the fractured aperture with the change of tangential displace-ment is simulated.The fissured surface in various roughness can be produced by computer programs,and the relation-ships between the fractured aperture,contact rate and tangential displacement,fractal dimension are discussed.The con-clusions are drawn as follows:the uniform values of fissured aperture and contact rate would increase with the increasing of tangential displacement when normal stress keeps in constant;and under the same tangential displacement,the uniform values of fissured aperture and contact rate would increase with the increasing of fractal dimension D;simultaneously,the contiguous part would develop from the initial dispersed state to sheet distribution state.