›› 2002, Vol. 23 ›› Issue (5): 564-569.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study on forming mechanism of Zaozhuang karst collapse and collapse model

HE Ke-qiang 1，WANG Bin 1，WAN Ji-tao2   

  1. 1. Qingdao Institute of Architecture and Engineering, Qingdao 266033，China；2．Lunan Institute of Engineering Geological Survey， Yanzhou 273000， China; 3. Institufe of geology and geophysics, Chinese Azademy of Sciences, Beijing 100029, China
  • Received:2001-01-28 Online:2002-10-10 Published:2016-09-04

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Abstract: The seepage pressure effects are comprehensive actions on cover-layer in the process of rain feeding karst groundwater, which includes load-increased effect of water, vertical-seepage effect, wetting-soft effect and obturation negative-pressure effect. And the seepage pressure mechanism is the primary mechanism of karst collapse in the center of cone of depression in continual pumping region. Based on the theory of М•М•Протодьяконов , the limit equilibrium theory and the karst collapse law in Zaozhuang city, this paper has established the mechanical model of surface-collapse phase and determined the height of equilibrium soil-hole in inter-collapse phase. Meanwhile, an evaluation of karst collapses in Zaozhuang city has been carried out by means of the formula and mechanical model. The result shows that the formula and mechanical model coincide with the forming mechanism of karst collapse in Zaozhuang city.

Key words: seepage pressure effects, equilibrium soil-hole, mechanical model, theory of М•М•Протодьяконов , limit equilibrium theory

CLC Number: 

  • TU 457
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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