Structural matter drops to hit water with fixed rate phut from certain height, inchoate and main the structure that attacks water process in the light of phut is answered begin research, and press mutation of field of force and Xing Bo to wait to study however to entering the underwater after water less, and add with each passing day as large bridge and marine project much, the construction in these projects and the phenomenon that phut of large construction content also appeared to hit water in use process, like Guangdong 9 rivers big bridge is bumped to break down after collapsing, large area bridge floor falls into surface to wait, the meeting such as mutation of field of pressure of the underwater after this kind of phut hits water and Xing Bo is right all round structural products gives birth to certain influence, evaluate this kind of influence to have real project sense to construction and design.

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From the water pressure test and the collapsing examples, the thesis analysis the force expression of Karst collapse in water table dropping down, and presents that the additional stress from water table descending in overlying soil layer and rock, which is equal to approximately the descending depth of water table, which can be applied to about ten meters descending depth.

針對地下水位波動引發(fā)的巖溶塌陷進行了專門性研究一级性生活XX视频。通過試驗文章指出了巖溶區(qū)地下水位受迫下降至基巖面以下時的力學(xué)效應(yīng)為：附加力在一定范圍內(nèi)，與在基巖面以上一樣久热黄色视频，等于水位下降的幅度值国产激情视频一区二区三区，并與蓋層下基巖中洞穴的形態(tài)及體積無關(guān)日韩成人资源在线观看。

collapsible tube：可折皺管

collapse mechanism破壞機構(gòu) | collapsible tube可折皺管 | collapsing force破壞力

collapsing force：破壞力

collapsible tube可折皺管 | collapsing force破壞力 | collar vortex渦環(huán)