问题 问答题 简答题

拆除爆破周围环境的复杂性表现在哪些方面?设计时要注意哪些问题?

答案

参考答案:拆除爆破时周围环境的复杂性主要表现在:

(1)拆除对象多位于闹市区、厂区和交通要道地区,社会影响大;

(2)拆除对象与需保留(或保护)的建筑物毗邻,或者在结构上相互连接在一起;

(3)拆除对象的地表、地下或周围空间布有各种管道、线路等市政设施。

(4)有的拆除对象附近可能还有易燃、易爆气体的管道和危险品库房。

(5)爆破时要对邻近居民楼的住户进行撤离和疏散。

因此,在制订爆破拆除方案和设计前,除认真分析拆除体本身的结构特点、爆破场地条件和允许倒塌方向的范围外,还应对拆除体周围环境、设施进行详细的调查、登记,并做出爆破安全性评估和应采取的防患措施。

单项选择题
单项选择题

The nobler and more perfect a thing is, the later and slower it is becoming mature. A man reaches the mature (1) of his reasoning powers and mental faculties (2) before the age of twenty-eight; a woman at eighteen. And then, too, in the case of woman, it is the only reason of a sort--very mean in its (3) . That is why women remain children their whole life long; never seeing (4) but what is quite close to them, (5) fast to the present moment, taking appearance for (6) , and preferring (7) to matters of the first importance. For it is (8) his reasoning faculty that man does not live in the present only, (9) the brute, but looks about him and considers the past and the future; and this is the origin of (10) , as well as that of care and anxiety which so many people (11) Both the advantages and the disadvantages, which this (12) , are (13) in by the woman to a smaller extent because of her weaker power of reasoning. She may, in fact, be described as intellectually shortsighted, (14) , while she has an immediate understanding of what lies quite close to her, her field of (15) is narrow and does not reach to what is (16) ; so that things which are absent, or past, or to come, have much less effect upon women than upon men. This is the reason why women are inclined to be (17) and sometimes carry their desire to a (18) that borders upon madness. In their hearts, women think it is men’s business to earn money and theirs to spend it--if possible during their husband’s life, (19) , at any rate, after his death. The very fact that their husband hands them (20) his earnings for purposes of housekeeping strengthens them in this belief.

9()

A.above

B.like

C.beside

D.including