湖南省宁乡县山丘风化花岗岩地区,由于土层深厚,土壤结构松散,在地面起伏较大及径流比较集中的地方,极易产生崩坑。崩坑发生后,沟头便迅速延伸,沟底不断下切,沟岸也不断扩张,蚕食山体,淤塞下游,危害极大。过去,我们在治理中常采用干砌或浆砌石谷坊、跌水、防崩护脚等工程。但因很多地方采石非常困难,工程造价高,不少崩口得不到及时治理,致使水土流失不断发展,造成更大的危害。为了解决这一问题,去年,我们在灰汤乡共建村根据因地制宜、就地取材的原则,采用土砖填心,预制砼空 Ningxiang County, Hunan Province, weathered granite area, due to deep soil, loose soil structure, in the ground undulating and runoff more concentrated place, prone to collapse collapse. Collapse of the collapse of the cave, the head will quickly extend the ditch bottom continuously cut, ditch shore also continue to expand, eroded mountains, silting downstream, great harm. In the past, we often used in the management of dry masonry or masonry Valley, falling water, avalanche and other projects avalanche. However, because of the difficulty of quarrying in many places and the high project cost, many chinks can not be managed in time, resulting in the continuous development of soil and water loss and causing greater damage. In order to solve this problem, last year, we built a village in Huitang Township according to the local conditions and the principle of using local materials to fill the heart. Prefabricated concrete hollow