什么是岩石的空隙性，自然界岩土的空隙有哪几种，各有什么特点，衡量的指标是什么？
参考答案：
通常将岩石空隙的大小、多少、形状、联通程度以及分布状况等性质统称为岩石的空隙性。
岩石的空隙包括溶隙（地下岩溶洞）、岩体裂隙（节理）和岩石内部的孔隙，而土体一般只考虑孔隙。
（1）溶隙地下水和有些地表水长期溶解可溶性岩石而形成的较大体积的一种特殊空隙。岩溶洞，亦称喀斯特（Karst），是很大的地下岩体空隙。除了干枯的外，岩溶洞常是地下水大量埋藏的地方，往往形成地下河流或湖泊。有的岩溶洞则相当于不规则的地下承压水管线。
衡量溶隙多少的定量指标称岩溶率
（2）裂隙
存在于坚硬岩石中的裂缝状空隙称裂隙。衡量裂隙多少的定量指标称裂隙率
（3）孔隙率
松散岩石或土体是由大小不等的颗粒组成的，在颗粒或颗粒集合体之间普遍存在着孔隙。衡量孔隙多少的定量指标称孔隙率
根据语篇内容。用方框中所给词的正确形式填空．使短文通顺、连贯。方框中有两个词为多余项。
"I 1 a dinner for Mrs. Smith next door.” "Why?" asked Susie, who was .only six years old. "Because Mrs. Smith is very sad; her daughter 2 in an earthquake and she has a broken heart. We need to look after her. " "Why, Mommy?" "You see, Susie, when someone is sad, they have trouble 3 the little things like cooking dinner or other chores. Because Mrs Smith is our neighbor, we .need to do some thing to help her. Mm Smith won't ever be able to talk with her daughter or do all those wonderful things 4 mommies and daughters do together. You are a very smart girl, maybe you'll think of some way 5 care of Mrs Smith. " Susie thought seriously about 6 she could care for Mrs Smith. A few minutes later, .Susie knocked on her door. Mrs Smith answered the knock with a "Hi, Susie.” From her sad look, Susie noticed that Mrs Smith must 7 for a long time. "What can I do for you, Susie?" asked Mrs Smith. "My mommy says that you lost your daughter and your heart is broken." Susie held her hand out shyly. In it was a Band-Aid(创可帖). "This is for your broken heart.” Mrs Smith burst into tears. 8 her tears she said, "Thank you, darling girl, this will help a lot." Mrs Smith accepted Susie’s 9 and she put Susie's Band-Aid in a small picture frame(相框). She feels a little 10 every time she sees it. She wisely knows that healing takes time and support. |