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武昌陆家街,地处武昌南端城郊接壤处。1988年5月11日21时至5月12日22时,这里发生了一次大幅度地面塌陷。陆家街89号、91号,陆家街中学校门及黄鹤制伞厂的十多间房屋等陷入地下,形成一个深20多米,面积近400平方米的椭圆柱形塌坑。陆家街地面塌陷速度块、幅度大,影响范围集中,与一般城市地面沉降具有截然不同的特点。显然,这次地面塌陷不是由于过度抽用地下水引起土层释水压紧所导致,地下水的抽用不是这次地面塌陷的主要原因。笔者认为陆家街地面塌陷是一种“空洞”塌陷。地下空洞的产生和存在是“空洞”塌陷的主要原因。
Wuchang Lu Jia Street, located in the southern suburbs of Wuchang bordering. At 2100 hours on 11 May 1988 and until 2200 hours on 12 May, there was a substantial ground collapse. 89 Lujia Street, No. 91, Lujiazao Middle School Gate and over a dozen houses of the Yellow Crane Umbrella Plant fall into the ground to form an elliptical cylindrical collapse pit of more than 20 meters deep and an area of nearly 400 square meters. Lujia Street ground subsidence speed block, a large range, the impact of concentration, and general urban land subsidence has a completely different characteristics. Obviously, this time, the ground subsidence was not caused by excessive water pressure caused by groundwater drainage. The groundwater pumping was not the main cause of this ground subsidence. I believe that Lu Jia Street ground collapse is a “hollow ” collapse. The emergence and existence of underground voids are the main reasons for the collapse of the hollow.