格式:pdf
大小:415KB
頁數(shù): 2頁
根據(jù)大斷面巖巷施工實踐及遇構(gòu)造變化冒頂特征,提出了U型鋼加補(bǔ)木垛、撞楔復(fù)合超前支護(hù)的施工技術(shù)方案,為大跨度巷道冒頂施工提供了借鑒經(jīng)驗。
格式:pdf
大?。?span class="single-tag-height">932KB
頁數(shù): 76頁
is one of the pra ctical form of value s. The so-called val ues refers to the objective t hings are of no val ue and the val ue of fundamental perspective. Different values, people's behaviour, attitudes, ways are different. Pe ople -ori ented focus on huma n value a nd realit y, we need the broa dest masses as values. A dhere t o pe ople -ori ented val ues, i s to make the e conomy more devel opm