梅县区地质灾害的防治
2018-01-03卢志文
卢志文
摘 要:梅县区位于广东省东北部,2013年11月撤县设区,面积2755.36平方公里,人口61.3346万人。梅县区地处山区,地质环境脆弱,地质灾害隐患点多面广,结合梅县区实际和自己的工作实践,主要从梅县区的地质环境条件、气象水文、地质灾害现状与危害、成因分析、地质灾害的预防和治理措施方面,浅谈如何做好梅县区地质灾害防治工作。
关键词:地质灾害;预防;治理
中图分类号:P694 文献标志码:A 文章编号:2095-2945(2018)33-0131-02
Abstract: Located in the northeast of Guangdong Province, Meixian District, with an area of 2,755.36 square kilometers and a population of 613346, was changed from a county into a district in November 2013. Meixian District is located in the mountainous area, the geological environment is fragile, and the hidden danger points of geological disasters are in many aspects and wide. In view of the actual situation of Meixian District and its own work practice, this paper mainly discusses how to do a good job in the prevention and control of geological disasters in Mei County from the aspects of geological environmental conditions, meteorological and hydrological conditions, the present situation and hazards of geological disasters, the analysis of their causes, and the prevention and control measures of geological disasters.
Keywords: geological hazards; prevention; treatment
1 地质环境条件
(1)地形地貌。梅县区地处粤东北低山丘陵区。西北部有项山山脉余脉平缓延伸到境内;东南部有莲花山脉、阴那山脉。全境地势总体上自西南向东北倾斜;以梅江河为界,往东南一翼地域较窄,地势快速升高,境内12座千米以上高山多分布在东南翼县境线附近;往西北一翼山势迤逦起伏,地势渐次升高。(2)地质构造。梅县区构造形态以北东向和北西向为主、南北向和东西向为辅的基本格局。境内断裂构造主要有北东向的蓝田断层、白渡断层、石壁-汾水断层、苏田断层、月树下断层、马鞍凹断层、乌石岗断层、丽水-莲花山断层、庵子隔断层、赤朱流断层,北西向的明山断层、高屏断层、华山断层、长田墟断层、石正墟断层,南北向的泮溪断层等。境内主要褶皱构造有礤田背斜、水车背斜、申坑背斜、刘屋向斜、大坪墟背斜、公坑向斜、扎田复向斜等。
2 气象与水文
(1)气象条件。梅县区属亚热带季风气候区。气候温和,雨量充沛,雨热同季,干冷同期,易旱易涝。多年平均气温21.3℃,年均无霜期306天,年平均日照时数1874.2小时,年平均相对湿度78%。……
