Njikọ dị ike
Dynamic compaction is a method that is used to increase the density of soils when certain subsurface constraints make other methods of soil compaction inappropriate. The process involves dropping a heavy weight repeatedly on the ground at regularly spaced points, usually laid out in a systematic fashion such as a grid. The weight and the height from which it is dropped determine the force delivered to the ground surface and thus the amount of compaction that occurs. Depending on the degree of compaction desired, the weight may vary between 8 and 36 tonnes (18,000 and 79,000 lb), and the height between 1 and 30 metres (3 and 98 ft).
Mmetụta nke ọdịda n'efu na-emepụta ebili mmiri nrụgide nke na-enyere aka n'ime ka ala sie ike. Ebili mmiri ndị a nwere ike ịbanye ruo mita 10 (33 . N'ala na-enweghị njikọ, ebili mmiri ndị a na-emepụta mmiri nke mkpakọ nke ala na-esochi; n'ala na ya, ha na-emepụta mmụba nke nrụgide mmiri nke mkpokọta nke ala na'esochi. Mmetụta mmiri na-adịghị mma bụ nrụgide nke mmiri nke tọrọ n'ime oghere dị n'etiti ihe siri ike nke nkume na ala.
Ọdịdị nke mkpakọ na-adabere n'ibu nke hama ahụ, ịdị elu nke a na-adaba na hama ahụ, na oghere nke ebe a na-adọba hama ahụ. Ntọala mbụ nke ịdị arọ nwere mmetụta kachasị, ma na-abanye n'ime omimi ka ukwuu. Ihe ndị na-esonụ, ma ọ bụrụ na ha dị nso na ibe ha, na-ejikọta ọkwa ndị na-adịghị omimi ma mezue usoro ahụ site na ijikọta ala n'elu.
Enwere ike imeziwanye ọtụtụ ụdị ala site na mkpakọ dị ike. A na-agwọkarị ihe ndị jupụtara n'ala ochie na ala ndị nwere mkpụrụ. A ghaghị iji nlezianya gwọọ ala ndị dị n'okpuru tebụl mmiri iji kwe ka nrụgide mmiri karịrị akarị nke a na-emepụta mgbe a na-atụba ibu ahụ n'elu.
Ebem si dee
[dezie | dezie ebe o si]- Nchịkọta dị ike. Ngalaba Na-ahụ Maka Njem na United States. Washington, DC: Federal Highway Administration, 1995.[1]