Ecological treatment methods for geological environmental disasters caused by river goafs

Abstract

The invention belongs to the field of geological environment, and particularly relates to an ecological treatment method oriented to geological environment disasters caused by riverway goafs. The ecological treatment method oriented to geological environment disasters caused by riverway goafs includes the following steps that firstly, the geology of a sand excavation area is observed, the geological environment of the riverway goafs is analyzed, and soil property parameters are determined according to the range and the shape of sand excavation hanging-in-air caves; secondly, the destructing mode of the disasters in the riverway goafs is determined, and the long-time sinking rule and the action mechanism of the hanging-in-air caves are determined; thirdly, the sinkage of the HuLu caves is controlled with a filling grouting method. The geological environment of the riverway goafs is treated ecologically with the method, an optimum method is obtained through on-site exploration, analytic demonstration, theoretical analysis and filling experiments, potential danger of accidents is eliminated, and the method has extensive application prospects and promotional value for guaranteeing smoothness and safety of riverways, reducing geological environment disasters and maintaining ecological balance and has great social and economic benefits.

Description

technical field [0001] The invention belongs to the field of geological environment, and in particular relates to an ecological treatment method for geological environmental disasters caused by river goafs. Background technique [0002] With the rapid development of water conservancy, construction, highway, railway and other industries, it has greatly promoted the rapid development of the economy, but at the same time it has also caused excessive consumption of building materials, among which the demand for sand and gravel resources is quite huge. At present, the sand and gravel resources in the construction industry are mainly river sand, which has driven the rapid development of the river sand excavation industry. However, due to the lack of macro policy management, river sand mining has been in a state of large-scale, long river sections, and disorderly excess for a long time, forming a large number of river goafs, which are so-called sand minin...

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Problems solved by technology

Zhou Jinsong took the research on the dredging project of the right branch gate in the second phase regulation project of the Zhenyang section of the Yangtze River and the monitoring data of the sand mining area in the transitional section of the left branch of the main stream of Meizizhou in January 1994 by the Hydrology Bureau of the Lower Yangtze River as an example, pointing out that It is difficult to change the original scouring and silting mode of the river section if local channel excavation is limited in a relatively stable flow field, but large-scale sand mining activities may lead to river bed refinement, river bed scour intensification, and river regime occurrence in sensitive river sections. Variety

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