地(di)(di)質災(zai)害(hai)危險性評估，是指在地(di)(di)質災(zai)害(hai)易發(fa)區(qu)內進(jin)行工程(cheng)建(jian)(jian)(jian)設(she)和編制城市(shi)總體(ti)規(gui)劃(hua)(hua)、村莊(zhuang)和集鎮(zhen)規(gui)劃(hua)(hua)時(shi)，對(dui)建(jian)(jian)(jian)設(she)工程(cheng)和規(gui)劃(hua)(hua)區(qu)遭受山體(ti)崩塌、滑坡(po)、泥石流(liu)、地(di)(di)面(mian)塌陷、地(di)(di)裂(lie)縫、地(di)(di)面(mian)沉降(jiang)等地(di)(di)質災(zai)害(hai)的可能性和工程(cheng)建(jian)(jian)(jian)設(she)中(zhong)、建(jian)(jian)(jian)設(she)后引(yin)發(fa)地(di)(di)質災(zai)害(hai)的可能性做(zuo)出評估，提(ti)出具體(ti)預防治(zhi)理(li)措施的活(huo)動(dong)。