Since 1990 through repeated tests by trial and error,two feasible control meth-ods,have been raised and gradually perfected, namely method of using plugging agents and that of using packers.

• 从1990年开始，通过反复的摸索和试验，提出并逐渐完善了两种切实可行的治理方法，即封堵剂法和封隔器法。