海南岛北部红色风化壳的稳定性分析

ANALYSIS OF THE STABILITY OF RED WEATHERING CRUST ON NORTHERN HAINAN ISLAND

通过对海南岛北部7个发育于不同岩层的风化壳的稳定性分析可知,渗透水和地震力都是诱发风化壳滑塌的重要因素.在全渗透条件下,强震不仅使具有较大坡角的风化壳发生滑塌,甚至会使某些坡角仅2°左右的风化壳发生失稳滑移。

Analysis of the stability of seven weathering crusts developed on different rocks in the northern part of Hainan Iaiand permits us to know that percolating water and seismic force are both significant factors inducing the slump of weathering crust. Under the condition of complete percolation, strong earthquake causes mot only slump of the weathering'crusts at higher slope angles, but also instable slide of the weathering crusts at a slope angle of merely some 2°.